Cornwall
May
Weather in Cornwall for May 2027
Your guide to Cornwall weather in May - trends and predictions
In general, the average temperature in Cornwall at the beginning of May is 14.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.6 °C by the end of May.
Cornwall experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 80.7 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
10
Dry days
21
Rainy days
0
Snow days
17°/7°
Temperatures
17 km/h
Avg max wind
76 %
Avg humidity
Cornwall Weather May
Move between months or click on a day
Temperatures trend during May in Cornwall
See the weather trend as well as the moving average line
May weather in Cornwall day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Overcast | 12° /2° | 7.4 mm | 3 | |
| 2 May |  Heavy rain at times | 13° /5° | 4.1 mm | 4 | |
| 3 May | Overcast | 12° /4° | 2.7 mm | 3 | |
| 4 May | Overcast | 14° /5° | 3.2 mm | 3 | |
| 5 May | Overcast | 16° /7° | 3.4 mm | 4 | |
| 6 May | Overcast | 17° /7° | 3.4 mm | 4 | |
| 7 May | Overcast | 17° /6° | 1.3 mm | 5 | |
| 8 May |  Sunny | 12° /5° | 0.5 mm | 4 | |
| 9 May | Overcast | 13° /4° | 0.3 mm | 4 | |
| 10 May |  Partly cloudy | 16° /4° | 1.2 mm | 4 | |
| 11 May | Partly cloudy | 16° /5° | 1.4 mm | 5 | |
| 12 May | Overcast | 17° /6° | 0.9 mm | 5 | |
| 13 May | Partly cloudy | 18° /7° | 5.4 mm | 4 | |
| 14 May | Partly cloudy | 17° /9° | 5.3 mm | 4 | |
| 15 May |  Patchy rain possible | 20° /9° | 0.5 mm | 4 | |
| 16 May |  Moderate or heavy rain shower | 21° /9° | 4.5 mm | 5 | |
| 17 May | Partly cloudy | 19° /10° | 2.7 mm | 6 | |
| 18 May | Sunny | 19° /7° | 4.1 mm | 5 | |
| 19 May | Overcast | 20° /9° | 0.1 mm | 5 | |
| 20 May | Overcast | 18° /10° | 6.9 mm | 5 | |
| 21 May | Patchy rain possible | 20° /10° | 2 mm | 5 | |
| 22 May | Partly cloudy | 18° /7° | 0.8 mm | 5 | |
| 23 May | Overcast | 18° /8° | 0.1 mm | 5 | |
| 24 May | Moderate or heavy rain shower | 13° /6° | 8.3 mm | 3 | |
| 25 May | Partly cloudy | 18° /5° | 5.2 mm | 4 | |
| 26 May | Partly cloudy | 22° /8° | 0 mm | 6 | |
| 27 May | Sunny | 23° /10° | 2.4 mm | 6 | |
| 28 May | Sunny | 22° /10° | 1 mm | 6 | |
| 29 May | Sunny | 18° /10° | 3.1 mm | 5 | |
| 30 May | Partly cloudy | 20° /8° | 0.2 mm | 6 | |
| 31 May | Partly cloudy | 21° /8° | 1.2 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Cornwall in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Cornwall forecast closer to your planned date for the most up-to-date weather information.
Change Month
Cornwall in May - FAQ
What are the expected maximum and minimum temperatures in Cornwall during May?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Cornwall during May?
Moderate rainfall is anticipated in Cornwall during May, with a total of 80.7 mm spread over approximately 21 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Cornwall during May?
The average wind speed in Cornwall during May is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Cornwall
Explore the daily rainfall trends and prepare for Cornwalls May weather 💧
Typically, Cornwall has 21 rainy days in May with a total of 80.7 mm of rainfall.
UV exposure in Cornwall during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
Quick links
More Cornwall weather pages
You are here
Where is Cornwall?Get accurate weather forecasts for Cornwall, located at latitude 45.018 and longitude -74.728. Stay updated with localized weather information tailored for Cornwall.
Found a mistake?
We appreciate your attention to details. Tell us here.