See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
27°
Light Rain
Feels Like: 35°
Min: 24°
Max: 31°
The next few hours will be overcast, with today reaching 31°C and dropping to 24°C. The coming days will be light rain throughout the day and possible thunderstorms until night.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
05:54
Sunrise
17:54
Sunset
Moon
Waxing Gibbous
13:46
Moonrise
00:40
Moonset
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View stargazing scoreWeather in San Onofre today, September 20, 2026
San Onofre starts September 20, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.
The temperature range runs from about 24°C up to 31°C. The air stays humid, with relative humidity between 91% and 100% and the peak around 21:00. Winds stay light, near 1.2 km/h by 16:00, so the day feels still more than breezy.
Afternoon showers stay in play, peaking near 86% around 16:00. Skies remain cluttered, with cover about 93% by 16:00. Visibility stays near 16.1 km. The sun rises at 05:54 and sets at 17:54, for a total of 12 hours 0 minutes of sunlight today.
Taken together, San Onofre looks wet enough on September 20, 2026 that flexible outdoor plans work best, with temperatures peaking near 31°C.
Frequently asked questions about weather in San Onofre
How warm does it get in San Onofre?
The warmest month in San Onofre is February, with average high temperatures of 32°C. The average temperature during this period is around 28°C.
How cold does it get in San Onofre?
The coldest month in San Onofre is January, with average low temperatures of 25°C. The average temperature during this period is around 28°C.
What is the wettest time of year in San Onofre?
The wettest month in San Onofre is October, with an average of 244mm of precipitation.
What is the driest time of year in San Onofre?
The driest month in San Onofre is February, with an average of 13mm of precipitation.
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