Grasmere weather in September 2025

Expect 14°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Grasmere in September. Check more long-term weather averages for Grasmere in September before you book your next holiday to England in 2025/2026.

  • 14°C maximum daytime temperature in September in Grasmere14
    14°C max day temperature
  • 4 hours of sunshine per day
  • 18 days with some rainfall in September in Grasmere18
    18 days with some rainfall
  • 8°C minimum night-time temperature in September in Grasmere8
    8°C min night temperature
  • 13 hours of daylight per day in September in Grasmere13
    13 hours of daylight per day
  • No heat & humidity in September in Grasmere0
    No heat & humidity
  • 269 mm monthly rainfall in September in Grasmere269
    269 mm of monthly rainfall
  • UV (maximum) index 3 (Moderate) in September in Grasmere3
    3 (Moderate) UV index

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The September weather guide for England (Grasmere) 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 warm is it in Grasmere in September?

Daytime temperatures usually reach 14°C in Grasmere in September, falling to 8°C at night.

How sunny is it in Grasmere in September?

There are normally 4 hours of bright sunshine each day in Grasmere in September - that's 29% of daylight hours.

Does it rain in Grasmere in September?

There are usually 18 days with some rain in Grasmere in September and the average monthly rainfall is 269mm.

Grasmere September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:20 19:03
Monday, 15th September 2025 05:45 18:28
Tuesday, 30th September 2025 06:13 17:50

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