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Weather in Cornwall for May 2027

Your guide to Cornwall weather in May - trends and predictions

    Temperatures

  • In general, the average temperature in Cornwall at the beginning of May is 14.2 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.2 °C by the end of May.

    • Rain 🌧️

  • The climate of Cornwall in May is notably wet, with an average of 12 rainy days, and a total of 83.4 mm of precipitation.

    • More

  • 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

Average dry days
19
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/7°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Cornwall Weather May

Move between months or click on a day
April
June
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light rain
12°
2
Light rain
13°
3
Light rain
12°
4
Light rain
14°
5
Light rain
16°
6
Light rain
17°
7
Patchy rain possible
16°
8
Sunny
12°
9
Overcast
12°
10
Patchy rain possible
16°
11
Patchy rain possible
15°
12
Overcast
16°
13
Light rain
17°
14
Light rain
17°
15
Patchy rain possible
19°
16
Light rain
20°
17
Light rain
19°
18
Light rain
18°
19
Overcast
20°
20
Light rain
18°
21
Patchy rain possible
20°
22
Partly cloudy
18°
23
Overcast
18°
24
Moderate or heavy rain shower
13°
25
Light rain
18°
26
Partly cloudy
21°
27
Patchy rain possible
23°
28
Patchy rain possible
22°
29
Light rain
17°
30
Partly cloudy
20°
31
Patchy rain possible
20°

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
April June
Date Weather Temperatures Rain UV More
1 May Light rain
Light rain
 12° /3° 7.4 mm 3
2 May Light rain
Light rain
 13° /6° 4.1 mm 4
3 May Light rain
Light rain
 12° /4° 2.7 mm 3
4 May Light rain
Light rain
 14° /6° 3.2 mm 3
5 May Light rain
Light rain
 16° /7° 3.4 mm 4
6 May Light rain
Light rain
 17° /8° 3.4 mm 4
7 May Patchy rain possible
Patchy rain possible
 16° /6° 1.3 mm 5
8 May Sunny
Sunny
 12° /5° 0.5 mm 4
9 May Overcast
Overcast
 12° /4° 0.3 mm 4
10 May Patchy rain possible
Patchy rain possible
 16° /5° 1.2 mm 4
11 May Patchy rain possible
Patchy rain possible
 15° /6° 1.4 mm 5
12 May Overcast
Overcast
 16° /7° 0.9 mm 5
13 May Light rain
Light rain
 17° /7° 5.4 mm 4
14 May Light rain
Light rain
 17° /9° 5.3 mm 4
15 May Patchy rain possible
Patchy rain possible
 19° /9° 0.5 mm 4
16 May Light rain
Light rain
 20° /10° 4.5 mm 5
17 May Light rain
Light rain
 19° /11° 2.7 mm 6
18 May Light rain
Light rain
 18° /8° 4.1 mm 5
19 May Overcast
Overcast
 20° /9° 0.1 mm 5
20 May Light rain
Light rain
 18° /10° 6.9 mm 5
21 May Patchy rain possible
Patchy rain possible
 20° /10° 2 mm 5
22 May Partly cloudy
Partly cloudy
 18° /8° 0.8 mm 5
23 May Overcast
Overcast
 18° /8° 0.1 mm 5
24 May Moderate or heavy rain shower
Moderate or heavy rain shower
 13° /6° 8.3 mm 3
25 May Light rain
Light rain
 18° /6° 5.2 mm 4
26 May Partly cloudy
Partly cloudy
 21° /8° 0 mm 6
27 May Patchy rain possible
Patchy rain possible
 23° /10° 2.4 mm 6
28 May Patchy rain possible
Patchy rain possible
 22° /11° 1 mm 6
29 May Light rain
Light rain
 17° /10° 3.1 mm 5
30 May Partly cloudy
Partly cloudy
 20° /9° 0.2 mm 6
31 May Patchy rain possible
Patchy rain possible
 20° /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.
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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 83.4 mm spread over approximately 12 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 12 rainy days in May with a total of 83.4 mm of rainfall.

UV exposure in Cornwall during May

Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Location coordinates 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.

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