Southport weather in September 2025

Expect 17°C daytime maximum temperatures in the shade with on average 4 hours of sunshine per day in Southport in September. Check more long-term weather averages for Southport in September before you book your next holiday to England in 2025/2026.

  • 17°C maximum daytime temperature in September in Southport17
    17°C max day temperature
  • 4 hours of sunshine per day
  • 16 days with some rainfall in September in Southport16
    16 days with some rainfall
  • 10°C minimum night-time temperature in September in Southport10
    10°C min night temperature
  • 13 hours of daylight per day in September in Southport13
    13 hours of daylight per day
  • No heat & humidity in September in Southport0
    No heat & humidity
  • 79 mm monthly rainfall in September in Southport79
    79 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Southport4
    4 (Moderate) UV index
  • 16°C sea temperature in September in Southport16
    16°C sea temperature

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

Daytime temperatures usually reach 17°C in Southport in September, falling to 10°C at night.

How sunny is it in Southport in September?

There are normally 4 hours of bright sunshine each day in Southport in September - that's 33% of daylight hours.

How warm is the sea around Southport in September?

The average sea temperature around Southport in September is 16°C.

Does it rain in Southport in September?

There are usually 16 days with some rain in Southport in September and the average monthly rainfall is 79mm.

Southport September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:21 19:02
Monday, 15th September 2025 05:46 18:27
Tuesday, 30th September 2025 06:12 17:51

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