Cornwall Weather in May

May is one of the excellent months to visit Cornwall, with daytime temperatures of 20°C (68°F) and lows of 9°C (48°F) at night. Do note that quite a bit of rainfall is typical, averaging around 81 mm (3.2 in).

Rainfall in Cornwall in May

You can typically expect 13 days of rain this month, averaging around 81 mm (3.2 in). Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in Cornwall in May

May is a good time to be in Cornwall. Days are excellent, reaching 20°C (68°F), with nights around 9°C (48°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 9°C (48°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

So this is a great month to visit if you prefer dry days with pleasant temperatures.