Plymouth weather in September 2025

Expect 17°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Plymouth in September. Check more long-term weather averages for Plymouth in September before you book your next holiday to England in 2025/2026.

17
17°C max day temperature
5
5 hours of sunshine per day
15
15 days with some rainfall
11
11°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
102
102 mm of monthly rainfall
4
4 (Moderate) UV index
16
16°C sea temperature

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The September weather guide for England (Plymouth) 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)

More about England

How warm is it in Plymouth in September?

Daytime temperatures usually reach 17°C in Plymouth in September, falling to 11°C at night.

How sunny is it in Plymouth in September?

There are normally 5 hours of bright sunshine each day in Plymouth in September - that's 41% of daylight hours.

How warm is the sea around Plymouth in September?

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

Does it rain in Plymouth in September?

There are usually 15 days with some rain in Plymouth in September and the average monthly rainfall is 102mm.

Plymouth September sunrise & sunset times

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

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Monday, 1st September 2025	05:31	19:01
Monday, 15th September 2025	05:52	18:30
Tuesday, 30th September 2025	06:15	17:57

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