Cornwall (St Ives)
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 12.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 16 °C by the end of May.
Cornwall experiences moderate rainfall in May, with an average of 10 rainy days and a total precipitation of 44.9 mm.
Is May a good time to visit Cornwall? check out the best time to travel to Cornwall page.
✨ Is May a good time to visit Cornwall? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
21
Dry days
10
Rainy days
0
Snow days
14°/11°
Temperatures
25 km/h
Avg max wind
83 %
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 |  Patchy rain possible | 14° /10° | 1.1 mm | 3 | |
| 2 May |  Light rain | 13° /10° | 4.6 mm | 3 | |
| 3 May | Light rain | 12° /10° | 2.9 mm | 3 | |
| 4 May | Light drizzle | 12° /9° | 1 mm | 4 | |
| 5 May | Patchy rain possible | 12° /9° | 0.5 mm | 4 | |
| 6 May | Patchy rain possible | 12° /8° | 0 mm | 4 | |
| 7 May | Patchy rain possible | 12° /8° | 0.3 mm | 4 | |
| 8 May |  Partly cloudy | 13° /9° | 0 mm | 4 | |
| 9 May | Patchy rain possible | 15° /10° | 0.1 mm | 3 | |
| 10 May |  Cloudy | 15° /9° | 0.2 mm | 4 | |
| 11 May | Patchy rain possible | 13° /10° | 2.1 mm | 4 | |
| 12 May | Patchy rain possible | 13° /9° | 0.4 mm | 4 | |
| 13 May |  Moderate rain | 13° /10° | 6.6 mm | 4 | |
| 14 May | Light rain | 13° /10° | 2.5 mm | 3 | |
| 15 May | Light rain shower | 13° /10° | 1.2 mm | 3 | |
| 16 May | Patchy rain possible | 13° /9° | 1 mm | 3 | |
| 17 May | Patchy rain possible | 13° /10° | 1.4 mm | 3 | |
| 18 May | Light rain | 14° /11° | 3.7 mm | 3 | |
| 19 May | Patchy rain possible | 14° /11° | 2 mm | 3 | |
| 20 May | Patchy rain possible | 15° /12° | 1.4 mm | 4 | |
| 21 May | Light rain | 14° /11° | 3.5 mm | 4 | |
| 22 May | Patchy rain possible | 15° /11° | 0.2 mm | 4 | |
| 23 May | Patchy rain possible | 14° /11° | 0.1 mm | 5 | |
| 24 May | Patchy rain possible | 17° /12° | 0.6 mm | 5 | |
| 25 May | Light rain shower | 17° /13° | 2.4 mm | 4 | |
| 26 May | Light rain shower | 18° /13° | 2.1 mm | 4 | |
| 27 May | Light rain shower | 17° /13° | 1.8 mm | 5 | |
| 28 May | Patchy rain possible | 15° /13° | 0.5 mm | 4 | |
| 29 May | Partly cloudy | 15° /13° | 0.1 mm | 5 | |
| 30 May | Patchy rain possible | 15° /12° | 0.4 mm | 5 | |
| 31 May | Patchy rain possible | 15° /12° | 0.2 mm | 4 | |
| 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?
During May, expect a variety of temperatures with highs around 14° and lows near 11°, suitable for diverse activities and preferences.
How much rainfall should be expected in Cornwall during May?
In May, Cornwall can expect light to moderate rainfall, totaling 44.9 mm across approximately 10 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Cornwall during May?
The average wind speed in Cornwall during May is 25 km/h, suggesting breezy to windy conditions, depending on your activities.
Cornwall water temperatures in May
The average water temperature of the Atlantic Ocean near Cornwall in May is 11 °C. At the beginning of May temperatures are around 10.5 °C; by the end of the month they get a bit warmer and reach 11.5 °C.
- What is the water temperature in Cornwall in May?
- The average water temperature in Cornwall in May is 11 °C.
- Can you swim in Cornwall in May?
- Dangerously cold water: hypothermia risk is high. Only experienced cold-water swimmers with proper gear should consider entering.
May rainfall patterns in Cornwall
Explore the daily rainfall trends and prepare for Cornwalls May weather 💧
Typically, Cornwall has 10 rainy days in May with a total of 44.9 mm of rainfall.
Top locations in Cornwall
Select a location for an accurate weather forecast
More Locations Quick links
More Cornwall weather pages
You are here
Found a mistake?
We appreciate your attention to details. Tell us here.