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Weather in Wales for May 2025

Your guide to Wales weather in May - trends and predictions
  • In general, the average temperature in Wales at the beginning of May is 14.3 °C. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 16.6 °C by the end of May.

  • Wales sees moderate rainfall in May, averaging 10 rainy days.

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Average dry days
21
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
17°/8°
Temperatures
Average wind speed
20 km/h
Avg max wind
Average humidity
83 %
Avg humidity

Wales in May average weather

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Temperatures trend during May in Wales

See the weather trend as well as the moving average line

May weather day by day

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Date Weather Temperatures Rain UV More
1 May Patchy rain possible
Patchy rain possible
16° /7° 4 mm 4
2 May Patchy rain possible
Patchy rain possible
13° /8° 16.2 mm 3
3 May Partly cloudy
Partly cloudy
13° /6° 0.9 mm 4
4 May Moderate or heavy rain shower
Moderate or heavy rain shower
14° /6° 6.1 mm 3
5 May Moderate or heavy rain shower
Moderate or heavy rain shower
14° /8° 4.6 mm 4
6 May Moderate or heavy rain shower
Moderate or heavy rain shower
15° /9° 7.1 mm 4
7 May Overcast
Overcast
15° /9° 0 mm 4
8 May Moderate or heavy rain shower
Moderate or heavy rain shower
15° /10° 9.3 mm 4
9 May Heavy rain at times
Heavy rain at times
16° /9° 1.2 mm 5
10 May Moderate rain at times
Moderate rain at times
16° /10° 0.8 mm 4
11 May Heavy rain at times
Heavy rain at times
17° /9° 1.7 mm 4
12 May Patchy rain possible
Patchy rain possible
16° /9° 3.3 mm 4
13 May Cloudy
Cloudy
17° /8° 6.9 mm 4
14 May Overcast
Overcast
16° /9° 2 mm 4
15 May Overcast
Overcast
14° /8° 1.1 mm 4
16 May Overcast
Overcast
15° /7° 3.1 mm 4
17 May Patchy rain possible
Patchy rain possible
16° /8° 0.4 mm 4
18 May Overcast
Overcast
16° /10° 1.4 mm 4
19 May Heavy rain at times
Heavy rain at times
17° /9° 1.8 mm 4
20 May Partly cloudy
Partly cloudy
17° /8° 0 mm 5
21 May Overcast
Overcast
16° /7° 4.3 mm 4
22 May Patchy rain possible
Patchy rain possible
18° /8° 0.6 mm 5
23 May Patchy rain possible
Patchy rain possible
14° /8° 0.2 mm 4
24 May Partly cloudy
Partly cloudy
17° /8° 0.1 mm 4
25 May Cloudy
Cloudy
17° /7° 4.7 mm 4
26 May Cloudy
Cloudy
16° /9° 2.2 mm 4
27 May Sunny
Sunny
17° /8° 0.5 mm 5
28 May Overcast
Overcast
16° /10° 3.7 mm 4
29 May Partly cloudy
Partly cloudy
16° /8° 0.3 mm 5
30 May Partly cloudy
Partly cloudy
18° /8° 0.8 mm 5
31 May Patchy rain possible
Patchy rain possible
16° /9° 0.7 mm 4
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Important Notice
Our weather forecast for Wales 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 Wales forecast closer to your planned date for the most up-to-date weather information.

Wales in May - FAQ

What are the expected maximum and minimum temperatures in Wales during May?
Enjoy moderate daytime temperatures of up to 17° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Wales during May?
Significant rainfall exceeding 154.4 mm is expected in Wales during May, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Wales during May?
The average wind speed in Wales during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
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Location coordinates Where is Wales?

Get accurate weather forecasts for Wales, located at latitude 51.48 and longitude -3.18. Stay updated with localized weather information tailored for Wales.

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