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Summer 2021 Weather History in San Juan Puerto Rico

The data for this report comes from the Luis Muñoz Marín International Airport. See all nearby weather stations

This report shows the past weather for San Juan, providing a weather history for the summer of 2021. It features all historical weather data series we have available, including the San Juan temperature history for the summer of 2021. You can drill down from year to month and even day level reports by clicking on the graphs.

San Juan Temperature History in the Summer of 2021

History:202320222021202020192018201720162015
Temperature history in the Summer of 2021 in San JuanJunJulAug75°F75°F80°F80°F85°F85°F90°F90°F95°F95°FSpringFall
The daily range of reported temperatures (gray bars) and 24-hour highs (red ticks) and lows (blue ticks), placed over the daily average high (faint red line) and low (faint blue line) temperature, with 25th to 75th and 10th to 90th percentile bands.

Hourly Temperature in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Hourly Temperature in the Summer of 2021 in San JuanJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFallwarmhot
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 hourly reported temperature, color coded into bands. The shaded overlays indicate night and civil twilight.
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Cloud Cover in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Cloud Cover in the Summer of 2021 in San JuanJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
no significant cloudno cloud detectedceiling and visibility ok
The hourly reported cloud coverage, categorized by the percentage of the sky covered by clouds.

Daily Precipitation in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Daily Precipitation in the Summer of 2021 in San JuanJunJulAug0 in0 in1 in1 in2 in2 in3 in3 in4 in4 inSpringFall
The daily measured quantity of liquid or liquid-equivalent precipitation.

Snow Depth in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Snow Depth in the Summer of 2021 in San JuanJunJulAug0.0 in0.0 in0.2 in0.2 in0.4 in0.4 in0.6 in0.6 in0.8 in0.8 in1.0 in1.0 in1.2 in1.2 inSpringFall
The daily measured snow depth, where available.

Observed Weather in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Observed Weather in the Summer of 2021 in San JuanJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
foghazedrizzlelight rainmoderate rainheavy rainfreezing rainsleetsnow grainslight snowmoderate snowheavy snowhailthunderstorm
The hourly observed weather, color coded by category (in order of severity). If multiple reports are present, the most severe code is shown.
DayObservationsPrecipitationCodes
Tue, Jun 1 Light Rain0.27 in-RA
Thu, Jun 3 Light Rain0.07 in-RA
Fri, Jun 4 Light Rain0.41 in-RA
Sat, Jun 5 Rain, Light Rain, Mist0.61 inRA, -RA, BR
Sun, Jun 6 Light Rain0.06 in-RA
Mon, Jun 7 Heavy Rain, Rain, Light Rain0.18 inIWC65, RA, IWCA62, -RA, IWC61, IWCA61
Tue, Jun 8 Heavy Rain, Rain, Light Rain, Mist0.71 in+RA, RA, -RA, BR
Wed, Jun 9 Thunderstorm with Light Rain, Heavy Rain, Light Rain, Mist0.35 in-TSRA, +RA, -RA, BR
Thu, Jun 10 Thunderstorm with Rain, Heavy Rain, Rain, Light Rain, Fog, Mist2.96 inTSRA, +RA, RA, -RA, FG, BR
Fri, Jun 11 Thunderstorm, Light Rain0.02 inTS, -RA
Tue, Jun 15 Light Rain0.01 in-RA
Wed, Jun 16 Light Rain0.02 in-RA
Thu, Jun 17 Heavy Rain, Light Rain0.45 in+RA, -RA
Fri, Jun 18 Light Rain0.03 in-RA
Sat, Jun 19 Light Rain0.40 in-RA
Sun, Jun 20 Light Rain0.21 in-RA
Mon, Jun 21 Light Rain0.10 in-RA
Tue, Jun 22 Rain, Light Rain, Mist0.28 inRA, -RA, BR
Fri, Jun 25 Light Rain0.07 in-RA
Sat, Jun 26 Thunderstorm with Light Rain, Light Rain0.00 in-TSRA, -RA
Sun, Jun 27 Rain, Light Rain0.30 inRA, -RA
Mon, Jun 28 Light Rain0.38 in-RA
Wed, Jun 30 Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Light Rain, Mist1.39 in+TSRA, -TSRA, TSRA, -RA, BR
Thu, Jul 1 Light Rain0.01 in-RA
Fri, Jul 2 Light Rain0.01 in-RA
Tue, Jul 6 Light Rain0.09 in-RA
Wed, Jul 7 Light Rain0.01 in-RA
Thu, Jul 8 Light Rain0.04 in-RA
Sat, Jul 10 Rain, Light Rain0.59 inRA, -RA
Sun, Jul 11 Thunderstorm, Thunderstorm with Light Rain, Light Rain, Mist0.45 inTS, -TSRA, -RA, BR
Mon, Jul 12 Light Rain, Haze0.03 in-RA, HZ
Tue, Jul 13 Light Rain0.18 in-RA
Wed, Jul 14 Light Rain0.12 in-RA
Thu, Jul 15 Light Rain0.08 in-RA
Sun, Jul 18 Heavy Rain, Rain, Light Rain, Mist0.77 in+RA, RA, -RA, BR
Mon, Jul 19 Light Rain0.00 in-RA
Wed, Jul 21 Light Rain0.00 in-RA
Thu, Jul 22 Light Rain0.08 in-RA
Fri, Jul 23 Light Rain0.37 in-RA
Sat, Jul 24 Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Thunderstorm with Rain, Rain, Light Rain, Mist0.69 in+TSRA, -TSRA, TSRA, RA, -RA, BR
Sun, Jul 25 Thunderstorm, Thunderstorm with Heavy Rain, Thunderstorm with Light Rain, Light Rain, Mist0.83 inTS, +TSRA, -TSRA, -RA, BR
Tue, Jul 27 Light Rain0.07 in-RA, IWC61, IWCA61
Wed, Jul 28 Light Rain0.25 in-RA
Thu, Jul 29 Light Rain0.08 in-RA
Fri, Jul 30 Heavy Rain, Light Rain, Mist0.39 in+RA, -RA, BR
Mon, Aug 2 Heavy Rain, Light Rain, Mist0.05 in+RA, -RA, BR
Tue, Aug 3 Light Rain0.51 in-RA
Wed, Aug 4 Thunderstorm with Light Rain0.05 in-TSRA
Sun, Aug 8 Light Rain0.18 in-RA
Tue, Aug 10 Heavy Rain, Rain, Light Rain, Mist0.66 in+RA, RA, -RA, BR
Wed, Aug 11 Heavy Rain, Rain, Light Rain0.12 in+RA, RA, -RA
Fri, Aug 13 Light Rain0.00 in-RA
Sat, Aug 14 Light Rain0.08 in-RA
Sun, Aug 15 Rain, Light Rain0.57 inRA, -RA
Wed, Aug 18 Light Rain0.08 in-RA
Fri, Aug 20 Light Rain0.05 in-RA
Sun, Aug 22 Light Rain0.00 in-RA
Mon, Aug 23 Light Rain0.00 in-RA

Hours of Daylight and Twilight in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Hours of Daylight and Twilight in the Summer of 2021 in San JuanJunJulAug0 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrSpringFallJun 2013 hr, 14 minJun 2013 hr, 14 minnightnightdaydayAug 3112 hr, 30 minAug 3112 hr, 30 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.

Sunrise & Sunset with Twilight in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Sunrise & Sunset with Twilight in the Summer of 2021 in San JuanJunJulAug2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMSpringFall5:47 AM5:47 AMJun 56:58 PMJun 56:58 PM5:53 AM5:53 AMJul 57:05 PMJul 57:05 PM6:09 AM6:09 AMAug 316:39 PMAug 316:39 PM
The solar day over the course of the Summer of 2021. 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.

Solar Elevation and Azimuth in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Solar Elevation and Azimuth in the Summer of 2021 in San JuanJunJulAug12 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 AMSpringFall001020203030405050606070800010102030304040506060707080
northeastsouthwest
Solar elevation and azimuth in the the summer of 2021. 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).

Moon Rise, Set & Phases in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Moon Rise, Set & Phases in the Summer of 2021 in San JuanJunJulAug12 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSpringFallMay 113:01 PMMay 113:01 PMMay 267:15 AMMay 267:15 AMJun 106:53 AMJun 106:53 AMJun 242:40 PMJun 242:40 PMJul 99:17 PMJul 99:17 PMJul 2310:38 PMJul 2310:38 PMAug 89:51 AMAug 89:51 AMAug 228:03 AMAug 228:03 AMSep 68:52 PMSep 68:52 PMSep 207:55 PMSep 207:55 PM5:46 AM5:46 AM6:53 PM6:53 PM6:15 PM6:15 PM5:49 AM5:49 AM5:47 AM5:47 AM7:24 PM7:24 PM7:15 PM7:15 PM6:31 AM6:31 AM7:03 PM7:03 PM7:00 PM7:00 PM6:20 AM6:20 AM7:21 PM7:21 PM6:32 PM6:32 PM6:07 AM6:07 AM5:41 AM5:41 AM6:41 PM6:41 PM6:29 PM6:29 PM6:40 AM6:40 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.

Humidity Comfort Levels in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Humidity Comfort Levels in the Summer of 2021 in San JuanJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The hourly reported humidity comfort level, categorized by dew point. The shaded overlays indicate night and civil twilight.

Wind Speed in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Wind Speed in the Summer of 2021 in San JuanJunJulAug0 mph0 mph5 mph5 mph10 mph10 mph15 mph15 mph20 mph20 mph25 mph25 mph30 mph30 mph35 mph35 mph40 mph40 mphSpringFall
The daily range of reported wind speeds (gray bars), with maximum gust speeds (red ticks).

Hourly Wind Speed in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Hourly Wind Speed in the Summer of 2021 in San JuanJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
0 mph calm 1 mph light air 4 mph light breeze 8 mph gentle breeze 13 mph moderate breeze 18 mph fresh breeze 25 mph strong breeze 31 mph near gale 39 mph gale 47 mph strong gale 55 mph storm 64 mph violent storm 73 mph hurricane force
The hourly reported wind speed, color coded into bands according to the Beaufort scale. The shaded overlays indicate night and civil twilight.

Hourly Wind Direction in 2021 in San Juan

History:202320222021202020192018201720162015
Hourly Wind Direction in 2021 in San JuanJunJulAug12 AM12 AM3 AM3 AM6 AM6 AM9 AM9 AM12 PM12 PM3 PM3 PM6 PM6 PM9 PM9 PM12 AM12 AMSpringFall
calmnortheastsouthwest
The hourly reported wind direction, color coded by compass point. The shaded overlays indicate night and civil twilight.

Atmospheric Pressure in the Summer of 2021 in San Juan

History:202320222021202020192018201720162015
Atmospheric Pressure in the Summer of 2021 in San JuanJunJulAug29.80 inHg29.80 inHg29.85 inHg29.85 inHg29.90 inHg29.90 inHg29.95 inHg29.95 inHg30.00 inHg30.00 inHg30.05 inHg30.05 inHg30.10 inHg30.10 inHg30.15 inHg30.15 inHgSpringFall
The daily range of atmospheric pressure (gray bars), as measured by the altimeter setting reported in e.g. a METAR report.

The details of the data sources used for this report can be found on the Luis Muñoz Marín International Airport page.

See all nearby weather stations

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