The temperatures in Rennes in May are quite cold with temperatures between 8°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Rennes during the month of May. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Rennes in May 2025.
If you’re planning to visit Rennes in the near future, we highly recommend that you review the 14 day weather forecast for Rennes before you arrive.
Temperatures
18° / 8°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
71
mm
Sun Hours
9.0
Hrs
