May · United Kingdom
Best time to visit Cornwall in May Weather, crowds & prices
Weather in Cornwall in May
Average temperature 13°C, 62 mm of rain, about 26 days with 6+ hours of sunshine and 85% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
May score
5.5/10
Ranked #4 of 12 months
- Avg temp
- 13°C
- Rainfall
- 62 mm
- Humidity
- 85%
- Days with 6h+ sun
- 26
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Cornwall scores 5.5/10 for beach and coastal travel - an above-average month (#4 of 12). Expect around 13°C, 62 mm of rain, and roughly 26 days with 6+ hours of sunshine this month.
Cornwall's granite cliffs, surf beaches and fishing harbours fill England's south-west tip.
May in Cornwall — workable with trade-offs
May averages 13°C (56°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Rainfall runs 62 mm, so plan one flexible day in three; you still get about 26 days with 6+ hours of sunshine and 15.2 hours of daylight.
It scores 5.5/10 here, 4th of 12 months, against 6.4/10 in the destination's best month.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Plan for mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Cornwall in May?
- In May, Cornwall averages 13°C, 62 mm of rain, and about 26 days with 6+ hours of sunshine. Its climate-comfort score is 5.5/10.
- Is May a good time to visit Cornwall?
- May earns a 5.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Cornwall in May?
- Expect about 62 mm of rain in May. Average humidity is 85% and there are about 26 days with 6+ hours of sunshine.
Curated in Cornwall
Tickets & experiences
Things to do in Cornwall
Cornwall, United Kingdom. Live activities and tours from GetYourGuide, matched to this destination.