Cardiff
May
Weather in Cardiff for May 2027
Your guide to Cardiff weather in May - trends and predictions
In general, the average temperature in Cardiff at the beginning of May is 14.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 18.1 °C by the end of May.
Cardiff experiences heavy rainfall in May, with over 20 rainy days and an average total precipitation 82.8 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
10
Dry days
21
Rainy days
0
Snow days
16°/8°
Temperatures
21 km/h
Avg max wind
81 %
Avg humidity
Cardiff Weather May
Move between months or click on a day
Temperatures trend during May in Cardiff
See the weather trend as well as the moving average line
May weather in Cardiff day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 May |  Patchy rain possible | 16° /8° | 6.2 mm | 4 | |
| 2 May | Patchy rain possible | 15° /8° | 11.1 mm | 4 | |
| 3 May |  Partly cloudy | 14° /7° | 1.9 mm | 3 | |
| 4 May |  Moderate or heavy rain shower | 14° /6° | 4.5 mm | 3 | |
| 5 May | Patchy rain possible | 14° /7° | 2.4 mm | 3 | |
| 6 May | Patchy rain possible | 14° /7° | 3.8 mm | 3 | |
| 7 May | Patchy rain possible | 15° /8° | 0.3 mm | 4 | |
| 8 May | Patchy rain possible | 15° /8° | 4.8 mm | 3 | |
| 9 May |  Heavy rain at times | 16° /7° | 0.6 mm | 5 | |
| 10 May | Patchy rain possible | 16° /8° | 0.4 mm | 4 | |
| 11 May | Heavy rain at times | 16° /7° | 2.5 mm | 4 | |
| 12 May | Patchy rain possible | 15° /8° | 2.5 mm | 4 | |
| 13 May |  Cloudy | 16° /8° | 5.5 mm | 4 | |
| 14 May |  Overcast | 16° /8° | 2.2 mm | 4 | |
| 15 May | Overcast | 14° /7° | 0.7 mm | 4 | |
| 16 May | Overcast | 15° /5° | 2.4 mm | 4 | |
| 17 May | Patchy rain possible | 15° /7° | 0.7 mm | 4 | |
| 18 May | Overcast | 16° /8° | 4.1 mm | 3 | |
| 19 May | Heavy rain at times | 16° /9° | 4.4 mm | 3 | |
| 20 May | Partly cloudy | 17° /8° | 1.6 mm | 4 | |
| 21 May | Overcast | 17° /8° | 2.8 mm | 4 | |
| 22 May | Patchy rain possible | 19° /9° | 0.4 mm | 5 | |
| 23 May | Patchy rain possible | 16° /8° | 0.2 mm | 5 | |
| 24 May | Patchy rain possible | 19° /9° | 1.7 mm | 5 | |
| 25 May | Cloudy | 19° /10° | 3.2 mm | 5 | |
| 26 May | Light rain shower | 19° /11° | 2 mm | 5 | |
| 27 May |  Sunny | 19° /11° | 5.9 mm | 4 | |
| 28 May | Overcast | 18° /11° | 2.3 mm | 5 | |
| 29 May | Patchy rain possible | 17° /10° | 0.2 mm | 5 | |
| 30 May | Partly cloudy | 18° /9° | 0.4 mm | 5 | |
| 31 May | Patchy rain possible | 17° /10° | 0.5 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Cardiff 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 Cardiff forecast closer to your planned date for the most up-to-date weather information.
Change Month
Cardiff in May - FAQ
What are the expected maximum and minimum temperatures in Cardiff during May?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 8°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Cardiff during May?
Moderate rainfall is anticipated in Cardiff during May, with a total of 82.8 mm spread over approximately 21 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Cardiff during May?
The average wind speed in Cardiff during May is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Cardiff
Explore the daily rainfall trends and prepare for Cardiffs May weather 💧
Typically, Cardiff has 21 rainy days in May with a total of 82.8 mm of rainfall.
Quick links
More Cardiff weather pages
You are here
Where is Cardiff?Get accurate weather forecasts for Cardiff, located at latitude 51.48 and longitude -3.18. Stay updated with localized weather information tailored for Cardiff.
Related locations
Select a location for accurate weather forecast
More Locations Found a mistake?
We appreciate your attention to details. Tell us here.