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Hourly Forecast
Daylight Hours
05:52
Sunrise
17:48
Sunset
Moon
Waxing Gibbous
17:15
Moonrise
04:46
Moonset
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View stargazing scoreWeather in San José today, September 25, 2026
Expect unsettled, showery conditions in San José on September 25, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans. Wetter spells lean into the morning, when rain odds reach about 78% near 10:00. Skies look heaviest around 06:00, with cover close to 94%.
Temperatures climb from an overnight low near 24°C toward a daytime high of about 29°C. The air stays humid, with relative humidity between 75% and 100% and the peak around 06:00. Airflow remains manageable, reaching about 2.5 km/h around 15:00.
Expect the wet theme to continue later, as rain odds reach 90% near 16:00. Cloud amounts hold near 100% around 23:00. Expect visibility near 11.5 km, with poorer spells close to 0.9 km. The sun rises at 05:52 and sets at 17:48, for a total of 11 hours 55 minutes of sunlight today.
In short, treat September 25, 2026 in San José as a damp day: pack covers, watch the wetter hours, and expect a high near 29°C.
Frequently asked questions about weather in San José
How warm does it get in San José?
The warmest month in San José is May, with average high temperatures of 39°C. The average temperature during this period is around 31°C.
How cold does it get in San José?
The coldest month in San José is January, with average low temperatures of 20°C. The average temperature during this period is around 24°C.
What is the wettest time of year in San José?
The wettest month in San José is September, with an average of 239mm of precipitation.
What is the driest time of year in San José?
The driest month in San José is February, with an average of 22mm of precipitation.
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