Rennes Climate by Month
Rennes, Brittany, France
Warm summers and cool winters, with rain spread through the year.
Warm summers and cool winters, with rain spread through the year: that's Rennes's climate in short. Expect highs of 76°F (25°C) in July and 48°F (9°C) in January, with the coldest nights (February) near 37°F (3°C). It gets 30 in (759 mm) of rain a year, spread across the months. The air is humid, averaging 79% relative humidity.
- Warmest month
- 76°F(25°C)
- Average high, July
- Coldest nights
- 37°F(3°C)
- Average low, February
- Rain per year
- 30 in(759 mm)
- No clear rainy season
- Humidity
- 79%
- Sunniest: June
Best and worst months in Rennes
Best for weatherJune to August are the best time for weather in Rennes: highs near 75°F (24°C) and about 2.0 in (50 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; January is the coldest, with highs of only 48°F (9°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in July.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Rennes weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 48°F(9°C) | 38°F(3°C) | 2.8 in(70 mm) | 85% | 1.0 |
| FebFebruary | 50°F(10°C) | 37°F(3°C) | 2.1 in(54 mm) | 83% | 1.8 |
| MarMarch | 56°F(13°C) | 40°F(5°C) | 2.0 in(51 mm) | 79% | 3.0 |
| AprApril | 61°F(16°C) | 43°F(6°C) | 2.2 in(57 mm) | 76% | 4.4 |
| MayMay | 67°F(19°C) | 49°F(9°C) | 2.2 in(56 mm) | 73% | 5.3 |
| JunJuneBest | 73°F(23°C) | 53°F(12°C) | 1.8 in(46 mm) | 72% | 5.8 |
| JulJulyBest | 76°F(25°C) | 57°F(14°C) | 1.9 in(49 mm) | 72% | 5.7 |
| AugAugustBest | 76°F(25°C) | 56°F(14°C) | 2.1 in(54 mm) | 72% | 4.8 |
| SepSeptember | 71°F(22°C) | 52°F(11°C) | 2.0 in(52 mm) | 75% | 3.8 |
| OctOctober | 63°F(17°C) | 48°F(9°C) | 3.5 in(89 mm) | 87% | 2.1 |
| NovNovember | 55°F(13°C) | 42°F(6°C) | 3.8 in(96 mm) | 87% | 1.2 |
| DecDecember | 49°F(10°C) | 38°F(4°C) | 3.3 in(85 mm) | 82% | 0.8 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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