Merseyside weather in September 2025

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

  • 17°C maximum daytime temperature in September in Merseyside (Liverpool)17
    17°C max day temperature
  • 4 hours of sunshine per day
  • 15 days with some rainfall in September in Merseyside (Liverpool)15
    15 days with some rainfall
  • 10°C minimum night-time temperature in September in Merseyside (Liverpool)10
    10°C min night temperature
  • 13 hours of daylight per day in September in Merseyside (Liverpool)13
    13 hours of daylight per day
  • No heat & humidity in September in Merseyside (Liverpool)0
    No heat & humidity
  • 72 mm monthly rainfall in September in Merseyside (Liverpool)72
    72 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in September in Merseyside (Liverpool)4
    4 (Moderate) UV index
  • 16°C sea temperature in September in Merseyside (Liverpool)16
    16°C sea temperature

More about Merseyside

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Recommended for Merseyside

  • Save on multiple attractions in Blackpool with Pick 'n' Mix pass
  • Build passes around preferred attractions & number of days
  • Including Circus, Eye, SEA LIFE, Dungeon & Madam Tussauds

The September weather guide for Merseyside (Liverpool) 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.

Top Merseyside destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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More about the UK

How warm is it in Merseyside in September?

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

How sunny is it in Merseyside in September?

There are normally 4 hours of bright sunshine each day in Liverpool, Merseyside in September - that's 32% of daylight hours.

How warm is the sea around Merseyside in September?

The average sea temperature around Liverpool, Merseyside in September is 16°C.

Does it rain in Merseyside in September?

There are usually 15 days with some rain in Liverpool, Merseyside in September and the average monthly rainfall is 72mm.

Merseyside September sunrise & sunset times

Browse the sunrise and sunset times for Merseyside in September 2025. Select a month to view Merseyside sunrise and sunset times for the next 12 months. The Merseyside sunrise and sunset times shown below are for Liverpool.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:22 19:01
Monday, 15th September 2025 05:46 18:27
Tuesday, 30th September 2025 06:12 17:51

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