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Boulogne weather in August 2025
Expect 21°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in Boulogne in August. Check more long-term weather averages for Boulogne in August before you book your next holiday to France in 2025/2026.
- 21°C max day temperature
21 - 7 hours of sunshine per day
- 12 days with some rainfall
12 - 13°C min night temperature
13 - 14 hours of daylight per day
14 - No heat & humidity
0 - 52 mm of monthly rainfall
52 - 6 (High) UV index
6 - 18°C sea temperature
18
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The August 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 / mm) | Imperial (°F / inches)
More about France
How hot is it in Boulogne in August?
Daytime temperatures usually reach 21°C in Boulogne in August, falling to 13°C at night.
How sunny is it in Boulogne in August?
There are normally 7 hours of bright sunshine each day in Boulogne in August - that's 48% of daylight hours.
How warm is the sea around Boulogne in August?
The average sea temperature around Boulogne in August is 18°C.
Does it rain in Boulogne in August?
There are usually 12 days with some rain in Boulogne in August and the average monthly rainfall is 52mm.
Boulogne August sunrise & sunset times
Browse the sunrise and sunset times for Boulogne in August 2025. Select a month to view Boulogne sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 05:20 | 20:38 |
| Saturday, 16th August 2025 | 05:43 | 20:11 |
| Sunday, 31st August 2025 | 06:06 | 19:40 |
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