Rennes weather in August
Temperature, rain and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Excellent
Best time to visit: May – September
What is the weather like in Rennes in August?
In August, Rennes is warm: daytime highs average 23 °C, and nights cool down to about 14 °C. The sun shines for around 7 hours a day. Rain falls on about 8 days, adding up to 46 mm. All in all, August is an excellent month for a holiday in Rennes.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 84 | 84 | 81 |
| Day | 23° | 23° | 21° |
| Night | 14° | 14° | 12° |
| Sun | 7 h | 7 h | 6 h |
| Rain days | 8 | 8 | 8 |
More details for August
- Daylight
- 14 h 23 min07:00 – 21:23
- UV index
- 7 · highclear sky, noon (estimate)All months
- Muggy days
- 1 daydew point 18 °C or moreAll months
- Wind
- 17 km/haverage daily peakAll months
- Cloud cover
- 58 %on averageAll months
- Hot days
- 1 day30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Paris
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %62 %
- Few rainy daysweight 30 %71 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in August
- Sunscreen
- Sunglasses & sun hat
- A jumper for the evenings
- Rain jacket or umbrella
Rennes in August: quick answers
Is Rennes hot in August?
Warm rather than hot: in August, daytime highs in Rennes average 23 °C and nights cool to about 14 °C. On about 1 days the thermometer climbs to 30 °C or more.
Does it rain much in Rennes in August?
Rain falls on about 8 days, adding up to 46 mm.
Rennes month by month
The whole year in RennesAll destinations: FranceWhere to go 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