Northampton weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Northampton in September. Check more long-term weather averages for Northampton in September before you book your next holiday to England in 2025/2026.

  • 18°C maximum daytime temperature in September in Northampton18
    18°C max day temperature
  • 4 hours of sunshine per day
  • 12 days with some rainfall in September in Northampton12
    12 days with some rainfall
  • 9°C minimum night-time temperature in September in Northampton9
    9°C min night temperature
  • 13 hours of daylight per day in September in Northampton13
    13 hours of daylight per day
  • No heat & humidity in September in Northampton0
    No heat & humidity
  • 48 mm monthly rainfall in September in Northampton48
    48 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Northampton4
    4 (Moderate) UV index

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The September weather guide for England (Northampton) 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 Northampton in September?

Daytime temperatures usually reach 18°C in Northampton in September, falling to 9°C at night.

How sunny is it in Northampton in September?

There are normally 4 hours of bright sunshine each day in Northampton in September - that's 35% of daylight hours.

Does it rain in Northampton in September?

There are usually 12 days with some rain in Northampton in September and the average monthly rainfall is 48mm.

Northampton September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:15 18:51
Monday, 15th September 2025 05:38 18:18
Tuesday, 30th September 2025 06:03 17:43

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