Cowes weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Cowes in September. Check more long-term weather averages for Cowes in September before you book your next holiday to England in 2025/2026.

  • 18°C maximum daytime temperature in September in Cowes18
    18°C max day temperature
  • 5 hours of sunshine per day
  • 12 days with some rainfall in September in Cowes12
    12 days with some rainfall
  • 12°C minimum night-time temperature in September in Cowes12
    12°C min night temperature
  • 13 hours of daylight per day in September in Cowes13
    13 hours of daylight per day
  • No heat & humidity in September in Cowes0
    No heat & humidity
  • 67 mm monthly rainfall in September in Cowes67
    67 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Cowes4
    4 (Moderate) UV index
  • 17°C sea temperature in September in Cowes17
    17°C sea temperature

More about Cowes

Cowes by month

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The September weather guide for England (Cowes) 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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More about England

How hot is it in Cowes in September?

Daytime temperatures usually reach 18°C in Cowes in September, falling to 12°C at night.

How sunny is it in Cowes in September?

There are normally 5 hours of bright sunshine each day in Cowes in September - that's 42% of daylight hours.

How warm is the sea around Cowes in September?

The average sea temperature around Cowes in September is 17°C.

Does it rain in Cowes in September?

There are usually 12 days with some rain in Cowes in September and the average monthly rainfall is 67mm.

Cowes September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:19 18:50
Monday, 15th September 2025 05:41 18:19
Tuesday, 30th September 2025 06:04 17:45

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