Brest weather in September 2025

Expect 19°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Brest in September. Check more long-term weather averages for Brest in September before you book your next holiday to France in 2025/2026.

19
19°C max day temperature
6
6 hours of sunshine per day
15
15 days with some rainfall
12
12°C min night temperature
13
13 hours of daylight per day
0
No heat & humidity
88
88 mm of monthly rainfall
4
4 (Moderate) UV index
16
16°C sea temperature

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Destination

The September weather guide for France (Brest) 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 France

How hot is it in Brest in September?

Daytime temperatures usually reach 19°C in Brest in September, falling to 12°C at night.

How sunny is it in Brest in September?

There are normally 6 hours of bright sunshine each day in Brest in September - that's 44% of daylight hours.

How warm is the sea around Brest in September?

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

Does it rain in Brest in September?

There are usually 15 days with some rain in Brest in September and the average monthly rainfall is 88mm.

Brest September sunrise & sunset times

Browse the sunrise and sunset times for Brest in September 2025. Select a month to view Brest 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	06:36	19:59
Monday, 15th September 2025	06:55	19:30
Tuesday, 30th September 2025	07:16	18:59

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France - quick facts
Flight time^✝	1.5 to 2.5 hours
Time difference	UK +1 hour
Language(s)	French
Currency	Euro
Electricity	C + E plug (230V)
Driving side	Right
Why visit?	Beaches Culture Nature Nightlife
Tourist info	Atout France