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When is the best time to visit Rennes?
In general the best time to visit Rennes is probably August, when the weather is usually great. The hottest months are July, August, September, while the coldest months are January, February, December.
But ultimately the best time to visit depends on what you want to do:
- In general, it’s pleasant to walk and do outdoor activities during May - September.
- If you want to avoid wet weather, then your choice is January, November, December with the lowest chance of rain.
Average weather in Rennes in different months
This is the average weather in Rennes for each month based on historic data:
May, June, July, August usually has good weather. Average maximum temperature reaches +23°C during July.
In January, February, March, April, September, October, November, December the weather is average. Expect around 121 rainy days, and the precipitation amounts to approximately 67 mm in October.
Climate in Rennes
Here is the detailed breakdown of the climate in Rennes for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +16°C | +21°C | +24°C | +27°C | +30°C | +38°C | +40°C | +38°C | +34°C | +28°C | +20°C | +18°C |
| Average Maximum Temperature | |||||||||||
| +8°C | +9°C | +12°C | +15°C | +18°C | +21°C | +23°C | +23°C | +21°C | +16°C | +12°C | +9°C |
| Minimum Temperature | |||||||||||
| -14°C | -11°C | -7°C | -2°C | -1°C | +3°C | +7°C | +6°C | +3°C | -3°C | -5°C | -7°C |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 86 | 82 | 78 | 75 | 74 | 74 | 73 | 74 | 77 | 83 | 86 | 87 |
| Rain, mm | |||||||||||
| 55 | 44 | 53 | 52 | 67 | 55 | 49 | 42 | 45 | 67 | 57 | 62 |
| Snow, mm | |||||||||||
| 4 | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 |
| Average wind speed, m/s | |||||||||||
| 3 | 3 | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 3 | 3 |
| Sunny Days | |||||||||||
| 3 | 4 | 5 | 6 | 6 | 7 | 7 | 7 | 7 | 4 | 3 | 3 |
| Cloud Days | |||||||||||
| 11 | 10 | 9 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 10 | 11 |
| Rainy Days | |||||||||||
| 15 | 13 | 16 | 16 | 16 | 15 | 14 | 14 | 13 | 17 | 16 | 15 |
| Snowy Days | |||||||||||
| 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
Average Temperature
Here are the average maximum and minimum temperatures in Rennes during the whole year:
The hottest month in Rennes is August with average maximum temperature going up to +23°C. The coldest month is January with the lowest temperatures of +3°C.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Rennes looks throughout the year, in %:
The most humid month in Rennes is December with average humidity going up to 87%. The least humid month is July with an average humidity of 73%.
Rain
Amount of rainfall in mm. in Rennes during the whole year based on historical data:
The sunniest and driest month is June with approximately 7 sunny days and a total precipitation of around 55 mm. The rainiest and wettest month is October with approximately 17 rainy days and 67 mm of total precipitation.
Snow
Amount of snow in mm. in Rennes during the whole year based on historical data:
The snowiest month is January with approximately 1 snowy days.
FAQ
Frequently asked questions about the weather in Rennes:
What is the hottest month in Rennes?
The hottest month in Rennes is August with average maximum temperature of +23°C.
What is the coldest month in Rennes?
The coldest month in Rennes is January with minimum temperatures of +3°C.
Is Rennes worth visiting in winter?
Winter in Rennes could be a good time to visit, as the weather is generally ok.
When does it rain the least in Rennes?
if you're looking to visit Rennes when it rains the least, you should plan your trip for October, May, December. During this time, rainfall is rare with the driest month being August with only 42 mm of rain.
Other cities in France
Check out the weather for other cities in France.
Monthly weather in Rennes
Source of the data
For this page, we’ve looked at the typical weather in Rennes, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.