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San Clemente (CA) Weather and Climate: A Comprehensive Guide

Temperatures see a moderate degree of fluctuation, transitioning from warm conditions to pleasant. It typically sees modest rainfall throughout the year. Let’s explore the climate details in depth to provide you with a complete overview.

Average maximum day and minimum night temperature

In San Clemente, seasonal changes bring about a moderate variation in temperatures. Typically, average maximum daytime temperatures range from a comfortable 27°C in September to a pleasant 19°C in the coolest month, December.

Nights are cooler, with lows often dropping to around 8°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

San Clemente typically sees modest rainfall throughout the year, with an average annual precipitation of 254 mm. The climate in San Clemente shows significant variation throughout the year. Expect moderate rainfall in December, with an average of 72 mm of precipitation over 8 rainy days.

In contrast, June offers drier and sunnier days, with around 0.5 mm of rainfall over a single rainy day. For more details, please visit our San Clemente Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

For those who appreciate different seasons, San Clemente serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 12.3 hours of sunshine daily, and embrace the darker days in January, offering only 6.6 hours of daily sunlight. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Corona, the United States of America (50 KM, 31 Miles).

Daily hours of sunshine

Data from: Corona, the United States of America (50 KM, 31 Miles).

Forecast for San Clemente (CA)

Fri   Dec 27
18°C | 9°C
S 3 m/s
broken clouds and no rain

broken clouds and no rain

Sat   Dec 28
20°C | 8°C
W 2 m/s
broken clouds and no rain

broken clouds and no rain

Sun   Dec 29
18°C | 8°C
W 2 m/s
partly cloudy and no rain

partly cloudy and no rain

The best time of year to visit San Clemente in the United States of America

During the months of January, February, March, April, May, June, October and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • Which is the warmest month in San Clemente?
    September has an average maximum temperature of 27°C and is the warmest month of the year.
  • Which is the coldest month in San Clemente?
    The coldest month is December with an average maximum temperature of 19°C.
  • Which is the wettest month in San Clemente?
    December tops the wettest month list with 72 mm of rainfall.
  • Which is the driest month in San Clemente?
    June is the driest month with 1 mm of precipitation.
  • Which is the sunniest month in San Clemente?
    July is the sunniest month with an average of 369 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.