Concarneau 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: July – August
What is the weather like in Concarneau in August?
In August, Concarneau is mild: daytime highs average 21 °C, and nights cool down to about 16 °C. The sea averages 17.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 52 mm in total. All in all, August is not an ideal month for a holiday in Concarneau.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 36 | 37 | 24 |
| Day | 21° | 21° | 19° |
| Night | 16° | 16° | 14° |
| Sea | 17° | 18° | 17° |
| Sun | 7 h | 6 h | 6 h |
| Rain days | 9 | 9 | 9 |
More details for August
- Daylight
- 14 h 22 min07:10 – 21:31
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 23 km/haverage daily peakAll months
- Cloud cover
- 57 %on averageAll months
- Hot days
- 0 days30 °C or more
- Time zone
- UTC+2Europe/Paris
How the score comes together
- Temperatureweight 35 %30 %
- Seaweight 25 %11 %
- Sunshineweight 20 %55 %
- Few rainy daysweight 20 %62 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Wetsuit for longer swims
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Concarneau in August: quick answers
Is Concarneau hot in August?
No. In August, Concarneau is mild: daytime highs average 21 °C and nights drop to about 16 °C.
Can you swim in Concarneau in August?
Only if you don't mind cold water: in August the sea averages just 17.8 °C. Comfortable swimming temperatures are not reached at any time of year.
Does it rain much in Concarneau in August?
Rain is frequent, with about 9 rainy days and 52 mm in total.
Concarneau month by month
The whole year in ConcarneauAll 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