San Juan
Puerto Rico, USA
Long term weather forecast
Long term weather forecast

Monthly weather forecast and Climate
San Juan, PR

Months with highest number of rainy days are November and December (19.6 days).
Month with lowest number of rainy days is March (12.2 days).

Best months for swimming (with highest average sea temperature) are August, September and October (84°F).
Coldest months (with lowest average sea temperature) are January, February, March and April (79°F).

Months with longest days are April, May, June, July and August (Average daylight: 13).
Months with shortest days are January, November and December (Average daylight: 11).

Months with most sunshine are March and July (Average sunshine: 9.1).
Month with least sunshine is November (Average sunshine: 6.7).

Months with highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with lowest UV index are January and December (UV index 8).

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