The temperatures in Roscoff in May are quite cold with temperatures between 9°C and 16°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Roscoff 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 Roscoff in May 2026.
If you’re planning to visit Roscoff in the near future, we highly recommend that you review the 14 day weather forecast for Roscoff before you arrive.
Temperatures
16° / 9°
Rainy Days
5
Snowy Days
0
Dry Days
26
Rainfall
83
mm
Sun Hours
8.4
Hrs
