The temperatures in Cornwall in May are quite cold with temperatures between 8°C and 19°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Cornwall. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Cornwall in May 2024.
If you’re planning to visit Cornwall in the near future, we highly recommend that you review the 14 day weather forecast for Cornwall before you arrive.
Temperatures
19° / 8°
Rainy Days
8
Snowy Days
0
Dry Days
23
Rainfall
39
mm
Sun Hours
1.8
Hrs
