When to go
The Best Time to Visit San Juan
Month-by-month climate data for San Juan, Puerto Rico — daily highs and lows, rain days, and an honest verdict for every month of the year.
Timing is the first real decision when planning San Juan— it drives crowds, prices and what's actually open. Here's how the year breaks down so you can pick dates that fit the trip you're building, not just the weather.
December–April. Dry season with 26-30°C days and cool nights. Skip peak hurricane season (August-October); April-May and November are shoulder weeks with great rates.
Warmest in San Juan: Jun (32°C / 90°F) · Coolest: Jan (28°C / 82°F) · Wettest: Sep (~22 rain days)
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)
San Juan climate, month by month
January
28° / 22°C
~15 rain days
Good
February
28° / 22°C
~17 rain days
Good
March
28° / 22°C
~17 rain days
Good
April
29° / 23°C
~18 rain days
Good
May
31° / 24°C
~18 rain days
Fair
June
32° / 25°C
~19 rain days
Fair
July
31° / 25°C
~21 rain days
Fair
August
31° / 25°C
~19 rain days
Fair
September
31° / 25°C
~22 rain days
Fair
October
30° / 25°C
~20 rain days
Fair
November
29° / 24°C
~18 rain days
Good
December
28° / 23°C
~17 rain days
Good
Plan around it
Dates locked in? Start from the San Juan travel guide or jump straight to a 3-day, 5-day or 7-day itinerary.