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Seal Beach (CA) Climate by Month

The weather in Seal Beach sees moderate temperature fluctuations over the course of a year. Temperatures can be warm at the high end to roughly pleasant at the low end. The city has a dry climate with very low precipitation levels. Let’s explore the climate details in depth to provide you with a complete overview.

Average day and night temperature

The climate in Seal Beach experiences moderate temperature changes, with mild shifts between seasons. On average, daytime temperatures range from a comfortable 26°C in September to a pleasant 19°C in December. Nighttime temperatures can drop, with averages reaching 8°C in December.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Seal Beach sits in an arid zone with minimal moisture, averaging 204 mm of rainfall per year. The seasons in Seal Beach, bring significant changes in precipitation. The wettest month, December, receives moderate rainfall, with an average of 55 mm of precipitation. This rainfall is distributed across 8 rainy days. In contrast, the driest month, August, experiences much less rainfall, totaling 0.1 mm over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

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

Sunshine over the year

In Seal Beach, summer days are longer and more sunny, with daily sunshine hours peaking at 12.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. November sees a soft sun for only 7.2 hours.

Monthly hours of sunshine

Data from: Los Angeles, the United States of America (34 KM, 21 Miles).

Daily hours of sunshine

Data from: Los Angeles, the United States of America (34 KM, 21 Miles).

The best time of year to visit Seal Beach in the United States of America

During the months of March, April, May, June, July, August, 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:
  • When is summer in Seal Beach?
    The hottest season / summer takes place in July, August, September and October.
  • Which is the warmest month in Seal Beach?
    September has an average maximum temperature of 26°C and is the warmest month of the year.
  • Which is the coldest month in Seal Beach?
    The coldest month is December with an average maximum temperature of 19°C.
  • Which is the wettest month in Seal Beach?
    December tops the wettest month list with 55 mm of rainfall.
  • Which is the driest month in Seal Beach?
    August is the driest month with 0 mm of precipitation.
  • Which is the sunniest month in Seal Beach?
    July is the sunniest month with an average of 364 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.

    Forecast for Seal Beach (CA)

    Sat   Nov 23
    17°C | 10°C
    SW 7 km/h
    1.6 mm
    overcast and rain

    overcast and rain

    Sun   Nov 24
    18°C | 11°C
    SW 11 km/h
    almost clear and no rain

    almost clear and no rain

    Mon   Nov 25
    20°C | 9°C
    W 11 km/h
    partly cloudy and no rain

    partly cloudy and no rain