The temperatures in Calais in May are usually low and can range between 10°C and 14°C.
You can expect about 3 to 8 days of rain in Calais 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 Calais in May 2026.
If you’re planning to visit Calais in the near future, we highly recommend that you review the 14 day weather forecast for Calais before you arrive.
Temperatures
14° / 10°
Rainy Days
4
Snowy Days
0
Dry Days
27
Rainfall
59
mm
Sun Hours
9.7
Hrs
