Weather in Cardiff in May
Cardiff, United Kingdom averages a high of 15.3°C (59.5°F) and low of 8.5°C (47.3°F) in May, with 12 rain days and 10.8 hours of daily sunshine. Travel score: 65.6/100 (Good). The best time to visit Cardiff is July.
High
15°C60°F
Low
9°C47°F
🌧️
12
rain days
☀️
10.8
hrs/day sunshine
💧
77%
humidity
66— Good
May in Cardiff is mild and occasionally wet — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Cardiff?
How much does it rain in Cardiff in May?
Cardiff receives an average of 79.2mm of rainfall across 12 rainy days in May. The annual total is 1041.5mm.
What should I pack for Cardiff in May?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
🧥
Mix of light and warm layers
Mild temperatures around 15°C
Recommended
🧥
Light rain jacket
Some rainy days expected (12 days)
☔
Umbrella
Be prepared for occasional showers
🧴
Sunscreen
Sun protection is still recommended
🕶️
Sunglasses
Useful for sunny periods
Traveling to United Kingdom in May?
Don't let a public holiday surprise you — restaurants, shops, and attractions may be closed.
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Data based on 1994–2024 averages · Last updated: 2024-12-31