Climate averages 1991–2020
Rennes weather
in July.
A warm, moderately wet month: the 2nd warmest and one of the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Rennes: daytime highs average 23.1°C and nights cool to about 14.2°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 46 mm of rain on roughly 8 days, which makes July a moderately wet month (one of the driest months of the year). Daylight, from sunrise to sunset, lasts about 15 h 38 min on an average July day.
The nearest other city in this atlas is Nantes (100 km away). In July its highs average 23.7°C, 0.5°C warmer than Rennes, with 39 mm of rain.
Among the 57 cities listed in France, Rennes ranks 48th of 57 for the warmest July highs and 20th of 57 for the driest July (rainfall, lowest first). The mean July high of those 57 cities is 24.9°C; Rennes is 1.7°C cooler than that mean.
From July to August, average highs rise by 0.1°C to 23.2°C, and monthly rainfall stays at 46 mm.
The annual picture
July 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 | 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, selected | 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
July in nearby cities
- Nantes in JulyFrance · 100 kmHigh 23.7°C · Low 15.2°C · 39 mm rain
- Angers in JulyFrance · 110 kmHigh 24.2°C · Low 15.1°C · 40 mm rain
- Saint Helier in JulyJersey · 124 kmHigh 17.9°C · Low 15.4°C · 48 mm rain
- Le Mans in JulyFrance · 140 kmHigh 23.9°C · Low 14.7°C · 44 mm rain
- Caen in JulyFrance · 154 kmHigh 22.5°C · Low 14.3°C · 55 mm rain
- Tours in JulyFrance · 195 kmHigh 24.9°C · Low 15.6°C · 44 mm rain
- Le Havre in JulyFrance · 202 kmHigh 20.8°C · Low 14.9°C · 61 mm rain
- Brest, France in JulyFrance · 210 kmHigh 18.9°C · Low 14.6°C · 45 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.