August · France
Best time to visit Rennes in August Weather, crowds & prices
Weather in Rennes in August
Average temperature 20°C, 40 mm of rain, about 20 days with 6+ hours of sunshine and 70% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
9.4/10
Ranked #2 of 12 months
- Avg temp
- 20°C
- Rainfall
- 40 mm
- Humidity
- 70%
- Days with 6h+ sun
- 20
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Rennes scores 9.4/10 for sightseeing and cultural travel - one of the top 12-month picks (#2). Expect around 20°C, 40 mm of rain, and roughly 20 days with 6+ hours of sunshine this month.
Rennes mixes Breton half-timbered houses, a parliament square and one of France's liveliest student scenes.
August is one of the strongest months in Rennes (2nd)
At 20°C (69°F) this is comfortable city weather in August, with sightseeing easiest before lunch and after the afternoon peak.
With around 40 mm of rain, any showers tend to pass through rather than settle in; about 20 days with 6+ hours of sunshine and 14.1 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Rennes at 9.4/10 (2nd of 12), just behind July at 9.6/10.
Pack light clothing, a hat and real sun protection.
Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Rennes in August?
- In August, Rennes averages 20°C, 40 mm of rain, and about 20 days with 6+ hours of sunshine. Its climate-comfort score is 9.4/10.
- Is August a good time to visit Rennes?
- August earns a 9.4/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Rennes in August?
- Expect about 40 mm of rain in August. Average humidity is 70% and there are about 20 days with 6+ hours of sunshine.
Curated in Rennes
Tickets & experiences
Things to do in Rennes
Rennes, France. Live activities and tours from GetYourGuide, matched to this destination.