Crescent City weather in September 2025

Expect 70°F daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Crescent City in September. Check more long-term weather averages for Crescent City in September before you book your next holiday to California in 2025/2026.

  • 70°F maximum daytime temperature in September in Crescent City70
    70°F max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in September in Crescent City5
    5 days with some rainfall
  • 50°F minimum night-time temperature in September in Crescent City50
    50°F min night temperature
  • 12 hours of daylight per day in September in Crescent City12
    12 hours of daylight per day
  • No heat & humidity in September in Crescent City0
    No heat & humidity
  • 1.9 inches monthly rainfall in September in Crescent City1.9
    1.9 inches of monthly rainfall
  • UV (maximum) index 6 (High) in September in Crescent City6
    6 (High) UV index
  • 54°F sea temperature in September in Crescent City54
    54°F sea temperature

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Crescent City by month

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The September weather guide for California (Crescent City) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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More about California

How hot is it in Crescent City in September?

Daytime temperatures usually reach 70°F in Crescent City in September, falling to 50°F at night.

How sunny is it in Crescent City in September?

There are normally 8 hours of bright sunshine each day in Crescent City in September - that's 67% of daylight hours.

How warm is the sea around Crescent City in September?

The average sea temperature around Crescent City in September is 54°F.

Does it rain in Crescent City in September?

There are usually 5 days with some rain in Crescent City in September and the average monthly rainfall is 1.9 inches.

Crescent City September sunrise & sunset times

Browse the sunrise and sunset times for Crescent City in September 2025. Select a month to view Crescent City sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:43 18:49
Monday, 15th September 2025 05:57 18:25
Tuesday, 30th September 2025 06:13 17:59

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