See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
21°
Mostly Clear
Feels Like: 31°
Min: 19°
Max: 21°
The next few hours will be overcast, with today reaching 21°C and dropping to 19°C. The coming days will be mostly clear until afternoon, returning in the evening.
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:39
Sunrise
18:50
Sunset
Moon
Waxing Crescent
11:13
Moonrise
20:46
Moonset
Daily Forecast
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
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Weather in San Clemente today, September 15, 2026
Expect a muted, overcast feel in San Clemente on September 15, 2026 as cloud persists. Brighter breaks, if they arrive, should stay brief.
Expect highs of 21°C and cooler readings close to 19°C. The air stays humid, with relative humidity between 78% and 84% and the peak around 14:00. Airflow remains manageable, reaching about 4.4 km/h around 13:00.
Afternoon skies stay clogged, peaking close to 100% near 16:00. The grey theme continues rather than clearing out. Expect visibility around 16.1 km. Daylight runs from 06:39 to 18:50, lasting 12 hours 11 minutes of sunlight today.
Taken together, overcast skies in San Clemente on September 15, 2026 favour indoor or covered options, with temperatures near 21°C.
Frequently asked questions about weather in San Clemente
How warm does it get in San Clemente?
The warmest month in San Clemente is August, with average high temperatures of 29°C. The average temperature during this period is around 23°C.
How cold does it get in San Clemente?
The coldest month in San Clemente is January, with average low temperatures of 9°C. The average temperature during this period is around 13°C.
What is the wettest time of year in San Clemente?
The wettest month in San Clemente is January, with an average of 85mm of precipitation.
What is the driest time of year in San Clemente?
The driest month in San Clemente is June, with an average of 2mm of precipitation.
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