Boulogne weather in September 2025

Expect 64°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Boulogne in September. Check more long-term weather averages for Boulogne in September before you book your next holiday to France in 2025/2026.

64
64°F max day temperature
5
5 hours of sunshine per day
14
14 days with some rainfall
52
52°F min night temperature
13
13 hours of daylight per day
0
No heat & humidity
2.7
2.7 inches of monthly rainfall
4
4 (Moderate) UV index
63
63°F sea temperature

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Destination

The September weather guide for France (Boulogne) 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) | Imperial (°F)

More about France

How hot is it in Boulogne in September?

Daytime temperatures usually reach 64°F in Boulogne in September, falling to 52°F at night.

How sunny is it in Boulogne in September?

There are normally 5 hours of bright sunshine each day in Boulogne in September - that's 42% of daylight hours.

How warm is the sea around Boulogne in September?

The average sea temperature around Boulogne in September is 63°F.

Does it rain in Boulogne in September?

There are usually 14 days with some rain in Boulogne in September and the average monthly rainfall is 2.7 inches.

Boulogne September sunrise & sunset times

Browse the sunrise and sunset times for Boulogne in September 2025. Select a month to view Boulogne 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	06:08	19:38
Monday, 15th September 2025	06:29	19:07
Tuesday, 30th September 2025	06:53	18:33

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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)
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Tourist info	Atout France