World Resorts Puerto Rico San Juan

San Juan Monthly Weather Averages

Please click on any column to get detailed information about San Juan weather in that particular month. You will get daily weather information for that month for the last several years.

Day & Night air temperature, °F

The warmest month in San Juan is august. The average daily temp is 86.4°F. The average nightly temp is 79.0°F.

Sea water temperature, °F

The warmest sea temperature usually observed in October. Average daily sea water temperature during this month is 84.9°F.

Precipitation total, in.

January is the month with least precipitations during the year. The average precipitation totals for this month is 1.5 in. The month with most precipitation total is September.

Number of rainy days

This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.

Wind speed, mph
Sunny, partly cloudy and cloudy days
Average sunny hours

Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.

* Charts above show average data for the last 3 years.

Best time for vacation in San Juan

Sunniest months:
June 10 days
March 10 days
April 9 days
Warmest months:
September 87.0 °F
August 86.9 °F
July 86.5 °F
Warmest sea temp:
October 84.9 °F
September 84.9 °F
August 84.0 °F
Coldest months:
February 80.6 °F
January 80.8 °F
March 81.3 °F
Rainiest months:
October 5 days
September 4 days
November 4 days
Windiest months:
July 12.6 mph
February 12.0 mph
June 11.8 mph

San Juan on a weather map

San Juan
+79°F
NW 7 mph
Feels like: +84°F
Precip.: 0%
Places in Puerto Rico:
Name
°F
+72°F
+73°F
+73°F
+72°F
+73°F
+79°F
24 Hours Forecast
San Juan
Local time: 03:32
December 05, friday
0600
77°F
NW
6 mph
0900
79°F
W
9 mph
1200
82°F
W
16 mph
1500
81°F
W
14 mph
1800
79°F
W
11 mph
2100
79°F
W
11 mph
December 06, saturday
0000
79°F
W
12 mph
0300
79°F
NW
10 mph
Units of measurement: °C / °F