Current Weather and Forecast in San Juan, Puerto Rico
Puerto Rico 🇵🇷
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About the weather in San Juan
San Juan has a tropical wet-and-dry climate. July is the warmest month, with average highs of 88°, and January the coldest, when nights fall to around 71°. September brings the most rain, on about 22 days, while June is the sunniest, with 12.2 hours of sunshine a day. Over a whole year it rains on roughly 214 days.
San Juan climate guide: monthly averages, seasons and the best time to visit
Common questions
When should I visit San Juan?
December to March is the sweet spot for San Juan - humidity and rainfall are at their lowest, which is what actually varies here. Expect 83°F (28°C) in the afternoon and around 15 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in December.
Is there snow in San Juan?
Effectively no. The 2015-2024 record for San Juan shows no regular measurable snowfall.
How hot does San Juan get in summer?
July averages 88°F (31°C). Hot afternoons happen but extremes are not the norm.
What is the rainiest month in San Juan?
September, at 6.1 inches (155 mm) over about 22 days. January is the driest month, at 2.1 inches (53 mm).
Which month is warmest in San Juan?
July, averaging 88°F (31°C) by day and 77°F (25°C) overnight. The hottest single day in our 2015-2024 record for this location reached 97°F (36°C).
When is San Juan at its coldest?
January, with highs of 83°F (28°C) and lows near 71°F (22°C). The coldest day in the 2015-2024 record fell to 65°F (18°C).