Cornwall weather
Our guide to the weather in Cornwall during May
We've looked at the most up-to-date weather data for Cornwall, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Cornwall weather in May.
What's the temperature like in Cornwall during May?
The temperature is extremely stable in May with average highs of 14℃ and lows just 4℃ lower at 10℃. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it rain in Cornwall during May?
On average, there will be 5 rainy days during the month, amounting to 72.4mm in total. That's broadly comparable with the amount of rain we see in England during the summer months, and would be considered dry. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Cornwall during May?
You're unlikely to experience any strong winds. Expect a gentle breeze that increases to moderate at times during May. With moderate air temperatures, any breeze will feel cool.
Hotel stays in Cornwall
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