Castellon weather in September 2025

Expect 28°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Castellon in September. Check more long-term weather averages for Castellon in September before you book your next holiday to Spain in 2025/2026.

  • 28°C maximum daytime temperature in September in Castellon28
    28°C max day temperature
  • 8 hours of sunshine per day
  • 7 days with some rainfall in September in Castellon7
    7 days with some rainfall
  • 17°C minimum night-time temperature in September in Castellon17
    17°C min night temperature
  • 12 hours of daylight per day in September in Castellon12
    12 hours of daylight per day
  • Low heat & humidity in September in CastellonL
    Low heat & humidity
  • 59 mm monthly rainfall in September in Castellon59
    59 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Castellon6
    6 (High) UV index
  • 25°C sea temperature in September in Castellon25
    25°C sea temperature

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The September weather guide for Spain (Castellon) 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 / mm)  |  Imperial (°F / inches)

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How hot is it in Castellon in September?

Daytime temperatures usually reach 28°C in Castellon in September with low heat and humidity, falling to 17°C at night.

How sunny is it in Castellon in September?

There are normally 8 hours of bright sunshine each day in Castellon in September - that's 62% of daylight hours.

How warm is the sea around Castellon in September?

The average sea temperature around Castellon in September is 25°C.

Does it rain in Castellon in September?

There are usually 7 days with some rain in Castellon in September and the average monthly rainfall is 59mm.

Castellon September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:28 19:31
Monday, 15th September 2025 06:41 19:09
Tuesday, 30th September 2025 06:56 18:44

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