Climate averages 1991–2020
Rennes weather
in January.
A cool, moderately wet month: the coolest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
January is a cool month in Rennes: daytime highs average 8.4°C and nights cool to about 3.3°C. By daytime temperature it is the coolest month of the year.
Expect about 64 mm of rain on roughly 11 days, which makes January a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 8 h 51 min on an average January day.
The nearest other city in this atlas is Nantes (100 km away). In January its highs average 8.9°C, about as warm as Rennes, with 71 mm of rain.
Among the 57 cities listed in France, Rennes ranks 19th of 57 for the warmest January highs and joint 32nd of 57 for the driest January (rainfall, lowest first). The mean January high of those 57 cities is 8.0°C; Rennes is 0.5°C warmer than that mean.
From January to February, average highs rise by 0.9°C to 9.4°C, and monthly rainfall falls from 64 mm to 53 mm.
The annual picture
January in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Rennes climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January, selected | 8.4°C3.3°C | 3.3°C | 64 | 11.2 | 8.89 h |
| February | 9.4°C2.9°C | 2.9°C | 53 | 9.9 | 10.210 h |
| March | 12.2°C4.6°C | 4.6°C | 52 | 10.5 | 11.912 h |
| April | 14.9°C6.3°C | 6.3°C | 58 | 11.1 | 13.614 h |
| May | 18.1°C9.5°C | 9.5°C | 63 | 10.8 | 15.215 h |
| June | 21.2°C12.4°C | 12.4°C | 53 | 9.0 | 16.016 h |
| July | 23.1°C14.2°C | 14.2°C | 46 | 7.8 | 15.616 h |
| August | 23.2°C14.3°C | 14.3°C | 46 | 8.2 | 14.314 h |
| September | 20.5°C12.2°C | 12.2°C | 49 | 8.2 | 12.613 h |
| October | 16.3°C9.7°C | 9.7°C | 69 | 11.4 | 10.911 h |
| November | 11.8°C6.2°C | 6.2°C | 65 | 11.3 | 9.39 h |
| December | 8.8°C3.7°C | 3.7°C | 71 | 12.1 | 8.48 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
January in nearby cities
- Nantes in JanuaryFrance · 100 kmHigh 8.9°C · Low 3.8°C · 71 mm rain
- Angers in JanuaryFrance · 110 kmHigh 8.3°C · Low 3.1°C · 62 mm rain
- Saint Helier in JanuaryJersey · 124 kmHigh 9.1°C · Low 6.8°C · 110 mm rain
- Le Mans in JanuaryFrance · 140 kmHigh 7.6°C · Low 2.5°C · 63 mm rain
- Caen in JanuaryFrance · 154 kmHigh 8.1°C · Low 3.3°C · 59 mm rain
- Tours in JanuaryFrance · 195 kmHigh 7.9°C · Low 2.8°C · 62 mm rain
- Le Havre in JanuaryFrance · 202 kmHigh 7.9°C · Low 4.1°C · 87 mm rain
- Brest, France in JanuaryFrance · 210 kmHigh 9.7°C · Low 6.7°C · 99 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Rennes) is explained once on the Rennes year overview and on the Sources, method and limits page.