Weather in Rennes Today
Current temperature in Rennes: 23°C (73°F). Overcast. Today's high 24°C (75°F), low 14°C (57°F).
Today's Daylight Forecast
Moon & Islamic Calendar
Air quality and UV are both favourable great conditions for a walk, run, or outdoor activity.
5-Day Weather Forecast
Full 15-Day ForecastAtmospheric Details
Today vs Normal
The long-term average high for today is 22°C.
15 of the last 19 days with published data ran above normal.
It continues that pattern - today's forecast is also running above normal.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Health & Activity Advice
UV index is 4 today — moderate. Sunscreen is worth using for extended time outside, but no special precautions are needed for short trips.
Air quality is considered satisfactory, and air pollution poses little or no risk. It’s a good day to be active outside.
Conditions are comfortable for outdoor activity at most points during the day today.
Nearby Regional Outlook
Rennes Weather Radar
Live precipitation · Cloud cover · Wind
Frequently Asked Questions
What is the hottest month in Rennes?
The hottest month in Rennes is typically August, with daytime highs averaging around 24.3°C (76°F), based on 10 years of historical weather data. Overnight lows during this period average near 14.6°C (58°F).
What is the coldest month in Rennes?
The coldest month in Rennes is typically January, with overnight lows averaging around 3°C (37°F) and daytime highs near 8.8°C (48°F), based on 10 years of historical weather data.
Does Rennes have a rainy season?
Rennes doesn't have a sharply defined rainy season rainfall is fairly spread across the year based on 10 years of historical data. October is the wettest month on average (about 89 mm), while July is the driest (about 45 mm).
What's the best time of year to visit Rennes?
The best time to visit Rennes is typically July to August, when daytime highs average a comfortable 24.3°C (76°F). Rainfall during this window averages around 47 mm, one of the lighter, more comfortable stretches of the year. This is based on 10 years of historical weather data.
Is Rennes's air quality safe right now?
As of the latest reading, Rennes's air quality index (AQI) is 24, rated "Good", based on the nearest monitoring station. Air quality is considered satisfactory, with little to no health risk.