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Hourly Forecast
Daylight Hours
06:00
Sunrise
17:56
Sunset
Moon
Waxing Crescent
09:38
Moonrise
22:05
Moonset
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Weather in San Clemente today, September 16, 2026
San Clemente stays under cloudy skies on September 16, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. Expect a grey start, with morning cloud around 65% by 04:00. Outdoor plans early on should not rely on bright skies.
Temperatures climb from an overnight low near 18°C toward a daytime high of about 22°C. Relative humidity sits between 67% and 88%, reaching its peak around 04:00. Winds stay light, near 6.1 km/h by 16:00, so the day feels still more than breezy.
Expect persistent cloud later on, with amounts around 70% by 19:00. Sunshine remains the exception, not the rule. Visibility stays near 16.1 km. Daylight runs from 06:00 to 17:56, lasting 11 hours 56 minutes of sunlight today.
Overall, San Clemente on September 16, 2026 stays grey and muted, so outdoor plans may want a flexible backup even with a high near 22°C.
