Winter (December to February)
Cool weather with highs around 10° and lows near 4°, regular rain (13 rainy days per month on average). Not an ideal time for a leisure trip.
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When to visit France
Climate · 10-year averages
When to visit Rennes?
Best time to visit Rennes: from May to September. Month-by-month temperatures, rainfall and sunshine, based on ten years of weather data.
Best time to go
From May to September
Hottest month
July · 24°
Coldest month
January · 3°
Wettest month
November · 83 mm
Climate month by month
Bars: monthly rainfall. Lines: average highs and lows. Month color: our travel comfort index.
- JanuaryÀ éviter
9° / 3°
- Rain
- 74 mm · 14 d
- Sunshine
- 4.1 h/day
- Humidity
- 87%
- FebruaryÀ éviter
10° / 3°
- Rain
- 63 mm · 12 d
- Sunshine
- 6.1 h/day
- Humidity
- 81%
- MarchMitigé
13° / 5°
- Rain
- 62 mm · 13 d
- Sunshine
- 7.7 h/day
- Humidity
- 79%
- AprilCorrect
16° / 6°
- Rain
- 53 mm · 10 d
- Sunshine
- 10.1 h/day
- Humidity
- 73%
- MayTrès bien
19° / 9°
- Rain
- 60 mm · 12 d
- Sunshine
- 10.9 h/day
- Humidity
- 74%
- JuneIdéal
22° / 13°
- Rain
- 76 mm · 10 d
- Sunshine
- 11.7 h/day
- Humidity
- 73%
- JulyIdéal
24° / 15°
- Rain
- 46 mm · 9 d
- Sunshine
- 11.9 h/day
- Humidity
- 71%
- AugustIdéal
24° / 14°
- Rain
- 57 mm · 9 d
- Sunshine
- 10.8 h/day
- Humidity
- 74%
- SeptemberIdéal
22° / 13°
- Rain
- 51 mm · 9 d
- Sunshine
- 9.7 h/day
- Humidity
- 75%
- OctoberCorrect
17° / 10°
- Rain
- 82 mm · 11 d
- Sunshine
- 7.0 h/day
- Humidity
- 82%
- NovemberÀ éviter
12° / 6°
- Rain
- 83 mm · 14 d
- Sunshine
- 5.5 h/day
- Humidity
- 86%
- DecemberÀ éviter
10° / 5°
- Rain
- 82 mm · 13 d
- Sunshine
- 4.3 h/day
- Humidity
- 88%
2014–2023 averages from the ERA5 reanalysis (Copernicus) via Open-Meteo. A day counts as a “rainy day” from 1 mm of rain.
Our take, season by season
Spring (March to May)
Cool weather with highs around 16° and lows near 7°, regular rain (12 rainy days per month on average). A decent time to go, as long as you're willing to make a few compromises.
Summer (June to August)
Mild weather with highs around 24° and lows near 14°, regular rain (9 rainy days per month on average). It's a great time to go.
Fall (September to November)
Mild weather with highs around 17° and lows near 10°, regular rain (11 rainy days per month on average). A decent time to go, as long as you're willing to make a few compromises.
Frequently asked questions
- When is the best time to visit Rennes?
- The best time to visit Rennes is from May to September, with highs between 19° and 24° and few rainy days.
- What is the hottest month in Rennes?
- July is the hottest month, with an average high of 24 °C.
- What is the coldest month in Rennes?
- January is the coldest month, with an average low of 3 °C.
- When does it rain the most in Rennes?
- November is the wettest month (83 mm, about 14 rainy days). The driest is July (46 mm).
- When should you avoid Rennes?
- The least favorable months are from November to February: too hot, too cold, or too rainy to make the most of your trip.
When to visit other cities · France
The capital and the country's other major cities.
More practical info: France
- Country guideEverything about a country on one page: time, weather, currency, plugs, emergency numbers, tipping, visas.
- WeatherTemperature, rain, wind, and UV index for every capital.
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- Visa requirements from FranceDo you need a visa for France?