Cornwall Weather in May

In Cornwall, May brings moderate daytime temperatures around 15°C (59°F), with nights cooling to 6°C (43°F). Expect quite a bit of rainfall this month.

Rainfall in Cornwall in May

The climate data from previous years indicates about 14 days of rain, averaging 82 mm (3.2 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Cornwall in May

Expect highs of 15°C (59°F) in Cornwall in May, with nights dropping to around 6°C (43°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights drop to 6°C (43°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Cornwall in May

Enjoy a sunny month with about 199 hours of sunshine, making it one of the brighter months of the year despite the cool conditions.

For Cornwall itself, June, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.