See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
14°
Drizzle
Feels Like: 12°
Min: 8°
Max: 15°
The next few hours will be overcast, with today reaching 15°C and dropping to 5°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:39
Sunrise
19:38
Sunset
Moon
Waxing Gibbous
13:46
Moonrise
04:10
Moonset
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View stargazing scoreWeather in San Clemente today, September 20, 2026
Expect unsettled, showery conditions in San Clemente on September 20, 2026 as rain moves through. The day opens on a wet note and needs flexible outdoor plans.
Temperatures climb from an overnight low near 8°C toward a daytime high of about 15°C. The air stays humid, with relative humidity between 56% and 87% and the peak around 23:00. A lighter breeze peaks around 18:00 near 5.2 km/h.
Through the afternoon wet weather remains a factor, with rain chances near 100% around 14:00. Cloud also stays substantial, close to 82% near 14:00. Expect visibility near 15.6 km, with poorer spells close to 11.6 km. Expect sunrise at 07:39, sunset at 19:38, and 11 hours 58 minutes of sunlight today overall.
Overall, San Clemente on September 20, 2026 suits indoor plans or waterproof kit, especially while rain chances stay near 100% and the high sits around 15°C.
Frequently asked questions about weather in San Clemente
How warm does it get in San Clemente?
The warmest month in San Clemente is January, with average high temperatures of 29°C. The average temperature during this period is around 21°C.
How cold does it get in San Clemente?
The coldest month in San Clemente is July, with average low temperatures of 4°C. The average temperature during this period is around 8°C.
What is the wettest time of year in San Clemente?
The wettest month in San Clemente is June, with an average of 200mm of precipitation.
What is the driest time of year in San Clemente?
The driest month in San Clemente is February, with an average of 3mm of precipitation.
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