San Juan Monthly Climate Averages

San Juan is located in tropical monsoon climate zone. Typical weather for this zone is vast rainfall during summertime and significant decrease in winter. Thus with insignificant temperature variance we can see big change in precipitation between seasons.

To help you choose the best time to travel, you can find climate data below on the weather in San Juan .


Month	t°C day	t°C night	mm rain	daylight

January	+28.4	+22.2	96	11.6h
February	+28.7	+22.2	61	11.9h
March	+29.4	+22.7	50	12.4h
April	+30.1	+23.6	119	13h
May	+30.8	+24.6	150	13.4h
June	+31.6	+25.4	112	13.6h
July	+31.5	+25.6	129	13.5h
August	+31.8	+25.7	139	13.1h
September	+31.8	+25.4	147	12.6h
October	+31.3	+24.9	142	12.1h
November	+29.9	+24	161	11.6h
December	+28.8	+23	128	11.4h

Best places

High season with the best weather conditions for the beach leisure in San Juan are typically January, February, December.

Temperature in San Juan

The table shows that the hottest months in San Juan are September and August, during which the average daytime temperature reaches +31.8°C and the nighttime temperature falls to +25.4°C.

The coldest months are January and February, when the daily average temperature falls to +28.4°C, and drops to +22.2°C during the night.

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