February
Best time
28°C / 21°C
9 rain days
hot
- manageable rain (9 days)
- outside peak hazard season
- warm evenings without humidity overload
Best time to visit San Juan
San Juan, Puerto Rico — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. The standouts: February, January, March.
About San Juan
San Juan is the capital city and most populous municipality in Puerto Rico, an unincorporated territory, and insular area of the United States. San Juan was founded by Spanish colonists in 1521, who called it Ciudad de Puerto Rico.
— condensed from Wikipedia ("San Juan, Puerto Rico")
Best months to visit
January
Best time
28°C / 21°C
11 rain days
hot, rainy
- outside peak hazard season
- warm evenings without humidity overload
March
Best time
29°C / 22°C
9 rain days
hot
- manageable rain (9 days)
- outside peak hazard season
- warm evenings without humidity overload
April
Best time
29°C / 23°C
11 rain days
hot, rainy
- outside peak hazard season
December
Best time
29°C / 22°C
12 rain days
hot, rainy
- outside peak hazard season
- warm evenings without humidity overload
November
Best time
30°C / 23°C
13 rain days
hot, rainy
- outside peak hazard season
May
Best time
30°C / 24°C
14 rain days
hot, rainy
- outside peak hazard season
OK — shoulder months
June
OK
31°C / 25°C
14 rain days
hot, rainy
- outside peak hazard season
July
OK
31°C / 25°C
16 rain days
hot, very wet
- outside peak hazard season
Months to skip
October
Skip
31°C / 24°C
13 rain days
⚠ peak season
hot, rainy
- very hot (31°C)
- peak hurricane season
September
Skip
31°C / 25°C
15 rain days
⚠ peak season
hot, rainy
- very hot (31°C)
- heavy rain expected (15 days)
- peak hurricane season
August
Skip
32°C / 25°C
16 rain days
⚠ peak season
hot, very wet
- very hot (32°C)
- heavy rain expected (16 days)
- peak hurricane season
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.