Daily high temperatures decrease by 2°F, from 87°F to 84°F, rarely falling below 82°F or exceeding 89°F.

Daily low temperatures decrease by 2°F, from 76°F to 74°F, rarely falling below 72°F or exceeding 78°F.

For reference, on August 21, the hottest day of the year, temperatures in San Juan typically range from 78°F to 89°F, while on January 25, the coldest day of the year, they range from 72°F to 83°F.

Average High and Low Temperature in November in San JuanNov11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303070°F70°F75°F75°F80°F80°F85°F85°F90°F90°F95°F95°F100°F100°FOctDecNov 187°FNov 187°F76°F76°FNov 3084°FNov 3084°F74°F74°FNov 1186°FNov 1186°F75°F75°F

The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on November. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in November in San Juan

Average Hourly Temperature in November in San JuanNov11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMOctDeccomfortablewarmhot

frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering

The average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Mombasa, Kenya (7,348 miles away) is the far-away foreign place with temperatures most similar to San Juan (view comparison).

© OpenStreetMap contributors

Compare San Juan to another city:

Map

The month of November in San Juan experiences very rapidly decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 58% to 35%.

The clearest day of the month is November 30, with clear, mostly clear, or partly cloudy conditions 65% of the time.

For reference, on May 30, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 73%, while on January 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 82%.

Cloud Cover Categories in November in San Juan

Cloud Cover Categories in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%OctDecNov 142%Nov 142%Nov 3065%Nov 3065%Nov 1150%Nov 1150%clearmostly clearpartly cloudymostly cloudyovercast

0%
clear
20%
mostly clear
40%
partly cloudy
60%
mostly cloudy
80%
overcast
100%

The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In San Juan, the chance of a wet day over the course of November is very rapidly decreasing, starting the month at 49% and ending it at 37%.

For reference, the year’s highest daily chance of a wet day is 50% on September 26, and its lowest chance is 20% on January 9.

Probability of Precipitation in November in San Juan

Probability of Precipitation in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%OctDecNov 249%Nov 249%Nov 3037%Nov 3037%Nov 1146%Nov 1146%rain

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during November in San Juan is rapidly decreasing, starting the month at 4.4 inches, when it rarely exceeds 8.7 inches or falls below 1.0 inches, and ending the month at 2.9 inches, when it rarely exceeds 7. 1 inches or falls below 0.4 inches.

Average Monthly Rainfall in November in San Juan

Average Monthly Rainfall in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 in0 in2 in2 in4 in4 in6 in6 in8 in8 in10 in10 inOctDecNov 14.4 inNov 14.4 inNov 302.9 inNov 302.9 inNov 114.1 inNov 114.1 in

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

Over the course of November in San Juan, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 21 minutes, implying an average daily decrease of 43 seconds, and weekly decrease of 5 minutes, 2 seconds.

The shortest day of the month is November 30, with 11 hours, 7 minutes of daylight and the longest day is November 1, with 11 hours, 28 minutes of daylight.

Hours of Daylight and Twilight in November in San Juan

Hours of Daylight and Twilight in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrOctDecnightnightdaydayNov 111 hr, 28 minNov 111 hr, 28 minNov 3011 hr, 7 minNov 3011 hr, 7 min

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise of the month in San Juan is 6:24 AM on November 1 and the latest sunrise is 16 minutes later at 6:39 AM on November 30.

The latest sunset is 5:51 PM on November 1 and the earliest sunset is 6 minutes earlier at 5:46 PM on November 25.

Daylight saving time is not observed in San Juan during 2023.

For reference, on June 21, the longest day of the year, the Sun rises at 5:48 AM and sets 13 hours, 14 minutes later, at 7:03 PM, while on December 22, the shortest day of the year, it rises at 6:52 AM and sets 11 hours, 1 minute later, at 5:53 PM.

Sunrise & Sunset with Twilight in November in San Juan

Sunrise & Sunset with Twilight in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMOctDec6:24 AM6:24 AMNov 15:51 PMNov 15:51 PM6:36 AM6:36 AMNov 255:46 PMNov 255:46 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset

The solar day over the course of November. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

The figure below presents a compact representation of the sun’s elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in November in San Juan

Solar Elevation and Azimuth in November in San JuanNov11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMOctDec001010202020303040405050000101020203030304040505060

northeastsouthwest

Solar elevation and azimuth over the course of November 2023. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for November 2023. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in November in San Juan

Moon Rise, Set & Phases in November in San JuanNov11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMOctDecOct 141:56 PMOct 141:56 PMOct 284:25 PMOct 284:25 PMNov 135:28 AMNov 135:28 AMNov 275:17 AMNov 275:17 AMDec 127:33 PMDec 127:33 PMDec 268:34 PMDec 268:34 PM6:05 AM6:05 AM6:06 PM6:06 PM5:50 PM5:50 PM7:01 AM7:01 AM6:36 AM6:36 AM6:00 PM6:00 PM5:10 PM5:10 PM6:47 AM6:47 AM6:23 AM6:23 AM5:32 PM5:32 PM5:38 PM5:38 PM7:31 AM7:31 AM

The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

The chance that a given day will be muggy in San Juan is gradually decreasing during November, falling from 100% to 96% over the course of the month.

For reference, on June 12, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 9, the least muggy day of the year, there are muggy conditions 81% of the time.

Humidity Comfort Levels in November in San Juan

Humidity Comfort Levels in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%OctDecNov 1100%Nov 1100%Nov 3096%Nov 3096%Nov 1199%Nov 1199%miserablemiserableoppressiveoppressivemuggymuggyhumidhumid

dry
55°F
comfortable
60°F
humid
65°F
muggy
70°F
oppressive
75°F
miserable

The percentage of time spent at various humidity comfort levels, categorized by dew point.

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in San Juan is increasing during November, increasing from 9.8 miles per hour to 11.3 miles per hour over the course of the month.

For reference, on July 14, the windiest day of the year, the daily average wind speed is 12.5 miles per hour, while on October 10, the calmest day of the year, the daily average wind speed is 9.3 miles per hour.

Average Wind Speed in November in San Juan

Average Wind Speed in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph3 mph3 mph5 mph5 mph6 mph6 mph8 mph8 mph20 mph20 mph22 mph22 mph24 mph24 mph26 mph26 mphOctDecNov 19. 8 mphNov 19.8 mphNov 3011.3 mphNov 3011.3 mphNov 1610.6 mphNov 1610.6 mph

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in San Juan throughout November is predominantly from the east, with a peak proportion of 86% on November 30.

Wind Direction in November in San Juan

Wind Direction in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%OctDeceastsouthnorth

northeastsouthwest

The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

San Juan is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.

The average surface water temperature in San Juan is essentially constant during November, remaining within 1°F of 83°F throughout.

Average Water Temperature in November in San Juan

Average Water Temperature in November in San JuanNov11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303078°F78°F79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°FOctDecNov 183°FNov 183°FNov 3082°FNov 3082°FNov 1183°FNov 1183°F

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in San Juan are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.

Time Spent in Various Temperature Bands and the Growing Season in November in San Juan

Time Spent in Various Temperature Bands and the Growing Season in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%OctDec100%Nov 16100%Nov 16comfortablewarmhot

frigid
15°F
freezing
32°F
very cold
45°F
cold
55°F
cool
65°F
comfortable
75°F
warm
85°F
hot
95°F
sweltering

The percentage of time spent in various temperature bands. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

The average accumulated growing degree days in San Juan are rapidly increasing during November, increasing by 857°F, from 9,144°F to 10,001°F, over the course of the month.

Growing Degree Days in November in San Juan

Growing Degree Days in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930309,000°F9,000°F9,200°F9,200°F9,400°F9,400°F9,600°F9,600°F9,800°F9,800°F10,000°F10,000°F10,200°F10,200°FOctDecNov 19,144°FNov 19,144°FNov 3010,001°FNov 3010,001°FNov 119,439°FNov 119,439°FNov 219,734°FNov 219,734°F

The average growing degree days accumulated over the course of November, with 25th to 75th and 10th to 90th percentile bands.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy in San Juan is essentially constant during November, remaining within 0.1 kWh of 4.7 kWh throughout.

The lowest average daily incident shortwave solar energy during November is 4.6 kWh on November 3.

Average Daily Incident Shortwave Solar Energy in November in San Juan

Average Daily Incident Shortwave Solar Energy in November in San JuanNov1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWhOctDecNov 34. 6 kWhNov 34.6 kWhNov 304.8 kWhNov 304.8 kWhNov 164.7 kWhNov 164.7 kWh

The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

For the purposes of this report, the geographical coordinates of San Juan are 18.466 deg latitude, -66.106 deg longitude, and 36 ft elevation.

The topography within 2 miles of San Juan contains only modest variations in elevation, with a maximum elevation change of 194 feet and an average elevation above sea level of 5 feet. Within 10 miles contains only modest variations in elevation (984 feet). Within 50 miles contains very significant variations in elevation (4,390 feet).

The area within 2 miles of San Juan is covered by water (78%) and artificial surfaces (19%), within 10 miles by water (58%) and grassland (16%), and within 50 miles by water (75%) and trees (14%).

This report illustrates the typical weather in San Juan, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

Temperature and Dew Point

There are 2 weather stations near enough to contribute to our estimation of the temperature and dew point in San Juan.

For each station, the records are corrected for the elevation difference between that station and San Juan according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at San Juan is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between San Juan and a given station.

The stations contributing to this reconstruction are:

• Luis Muñoz Marín International Airport (TJSJ, 94%, 7 mi, east, -30 ft elevation change)
• Mercedita Airport (TJPS, 6%, 44 mi, southwest, -10 ft elevation change)

TJSJ, 94%7 mi, -30 ftTJPS, 6%44 mi, -10 ft

© OpenStreetMap contributors

To get a sense of how much these sources agree with each other, you can view a comparison of San Juan and the stations that contribute to our estimates of its temperature history and climate. Please note that each source’s contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun’s position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus.

All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA’s MERRA-2 Modern-Era Retrospective Analysis . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA’s Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader.

Please review our full terms contained on our Terms of Service page.

San Juan

San Juan Antiguo Barrio, San Juan, Puerto Rico

© OpenStreetMap contributors