Weather radar Rennes
Real-time precipitation radar · Bretagne · France
Rennes climate table – average temperature, precipitation & sunshine hours
The climate table for Rennes shows long-term monthly averages (2000–2023): average high and average low temperature in °C, monthly precipitation (mm), rainy days and sunshine hours per month. Data source: ERA5 reanalysis (ECMWF) via the WDTEC Climate Archive.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 8.5° | 10.7° | 13.4° | 16° | 19.2° | 23.5° | 24.3° | 24.4° | 21.6° | 18.2° | 12.8° | 9.8° |
| Avg low (°C) | 3.1° | 4.5° | 5.2° | 6.3° | 9.7° | 13.1° | 14.4° | 14.4° | 12.6° | 10.2° | 6.6° | 4.8° |
| Precipitation (mm) | 86 | 44 | 57 | 54 | 58 | 67 | 74 | 38 | 63 | 84 | 69 | 65 |
| Rainy days | 12 | 9 | 12 | 9 | 12 | 10 | 11 | 6 | 12 | 13 | 11 | 13 |
| Sunshine hours | 136 | 147 | 242 | 294 | 346 | 349 | 354 | 330 | 280 | 216 | 157 | 114 |
| Humidity | 89% | 85% | 79% | 73% | 75% | 73% | 73% | 75% | 80% | 85% | 88% | 89% |
Best time to visit Rennes
The best time to visit Rennes is typically August. In this month the average high is 24.4°C, precipitation is 38 mm and sunshine duration is 330 hours. The annual average high is 16.9°C, total annual precipitation is 759 mm (130 rainy days/year) and annual sunshine is 2965 hours.
Frequently asked questions about the weather in Rennes
How up to date is the weather radar for Rennes?
The weather radar for Rennes is updated every 5 minutes with new radar data from the OPERA composite radar. A 2-hour forecast animation is also available. Rainfall probability, wind gusts and UV index are available up to 14 days in advance.
What weather data is available for Rennes?
Besides the rain radar, RadarWeather provides for Rennes: rainfall probability, thunderstorm warning (CAPE index), wind gusts, UV index, air pressure, humidity, dew point, sunshine hours, snow line and a 14-day forecast based on ICON-D2, ECMWF IFS and GFS.
When are thunderstorms expected in Rennes?
The thunderstorm potential for Rennes is calculated from the CAPE index and lightning potential. Active storm cells and severe weather warnings are visible on the radar map in real time. Thunderstorm warnings are issued automatically as soon as storm cells are detected near Rennes.
What is the climate like in Rennes?
Rennes has an annual average high of 16.9°C. The warmest month is August (avg high 24.4°C), the coldest January (avg low 3.1°C). The wettest month is January with 86 mm, the driest August with 38 mm. Total annual precipitation is 759 mm (130 rainy days). Annual sunshine is 2965 hours.
Weather radar near Rennes
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