Brest weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Poor
Best time to visit: April – September
What is the weather like in Brest in August?
In August, Brest is mild: daytime highs average 19 °C, and nights cool down to about 15 °C. The sea averages 15.7 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 51 mm in total. All in all, August is not an ideal month for a holiday in Brest.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 20 | 21 | 20 |
| Day | 19° | 19° | 18° |
| Night | 15° | 15° | 14° |
| Sea | 15° | 16° | 15° |
| Sun | 6 h | 6 h | 5 h |
| Rain days | 11 | 10 | 9 |
More details for August
- Daylight
- 14 h 24 min07:11 – 21:35
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 22 km/haverage daily peakAll months
- Cloud cover
- 61 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+2Europe/Paris
How the score comes together
- Temperatureweight 35 %3 %
- Seaweight 25 %0 %
- Sunshineweight 20 %42 %
- Few rainy daysweight 20 %58 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Brest in August: quick answers
Is Brest hot in August?
No. In August, Brest is mild: daytime highs average 19 °C and nights drop to about 15 °C.
Can you swim in Brest in August?
Only if you don't mind cold water: in August the sea averages just 15.7 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Brest in August?
Rain is frequent, with about 10 rainy days and 51 mm in total.
Brest month by month
The whole year in BrestAll destinations: FranceWhere to go in AugustSea temperature in August
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences