San Juan weather
Loading live data…Latest for San Juan: European (ECMWF): 82° Light drizzle · American (NOAA GFS): 83° Overcast · German (DWD ICON): 83° Overcast.
The weather map: all three models at once
European, American, German side by side around San Juan and nearby towns.Live rain radar →Hourly forecast: next 14 hours
consensus of the three modelsRain in the next 24 hours, model by model
each model's own hourly precipitation, side by sideLoading the three models…
10-day forecast, out to 14 days
where the models agree, and where they splitHeading to San Juan? San Juan, Puerto Rico, sits at 18.5°N in a tropical climate zone. Before you lock in outdoor plans, compare how the three global models - European (ECMWF), American (GFS) and German (ICON) - forecast San Juan right now. Where they agree you can trust it; the days they split are exactly when a single weather app is least reliable. For a beach trip the rain and wind columns below matter most - that is what makes or breaks a day by the sea.
Best time to visit San Juan
The most comfortable time to visit San Juan is usually January, February, March and April, when daytime highs sit in the pleasant 75-92°F range and the heaviest November rain is behind you.
San Juan weather by month
what to expect in San Juan through the year, 1991-2020 normals, San Juan Luis Muñoz Marín Airport (WMO)Here is San Juan's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to San Juan by season.
San Juan compared with New York City
30-year averages: daytime highs month by month, rain and sunlightWarmer through the year
average daytime high: San Juan 87°F, New York City 63°F
Rain over a year
San Juan 60 in, New York City 50 in
Sunlight vs a clear sky
solar energy reaching the ground as a share of a cloudless day, averaged over the year (not sunshine hours)
On 30-year averages San Juan runs 24°F warmer than New York City, with every month between +4°F and +43°F. Over a year it gets 20% more rain than New York City.
Month by month in numbers
| Month | San Juan | New York City | Difference | Sunlight, San Juan | Sunlight, New York City |
|---|---|---|---|---|---|
| January | 83°F | 40°F | +43°F | 80% | 68% |
| February | 84°F | 42°F | +42°F | 81% | 71% |
| March | 85°F | 50°F | +35°F | 78% | 69% |
| April | 86°F | 62°F | +24°F | 79% | 71% |
| May | 87°F | 71°F | +16°F | 76% | 70% |
| June | 89°F | 80°F | +9°F | 80% | 76% |
| July | 89°F | 85°F | +4°F | 80% | 80% |
| August | 89°F | 83°F | +6°F | 79% | 78% |
| September | 89°F | 76°F | +13°F | 79% | 76% |
| October | 89°F | 65°F | +24°F | 79% | 71% |
| November | 86°F | 54°F | +32°F | 78% | 72% |
| December | 84°F | 44°F | +40°F | 80% | 66% |
Daytime highs and lows on this page are 1991-2020 averages. San Juan: station normals from San Juan Luis Muñoz Marín Airport (WMO), rain included. New York City: station normals from New York Central Park (WMO), rain included. Sunlight vs a clear sky is NASA POWER's long-term average of the solar energy reaching the ground as a share of a cloudless day; it compares cloudiness and is not a count of sunshine hours. New York City stands in for the US here; other cities have their own climate tables.