United Kingdom·CWL·Europe
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Overview
Flying to Cardiff
Country
United Kingdom
Region
Europe
Airport
CWL
Cheapest month we saw
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Climate
Weather in Cardiff, month by month
The warmest month in Cardiff is July, at an average high of 68°F; the coolest is January at 45°F. October brings the most rain.
| Month | High | Low | Rain | Ocean |
|---|---|---|---|---|
| January | 45°F | 37°F | 3.7 in | 43°F |
| February | 46°F | 37°F | 2.7 in | 43°F |
| March | 48°F | 39°F | 2.5 in | 45°F |
| April | 54°F | 41°F | 2.2 in | 50°F |
| May | 61°F | 48°F | 2.5 in | 57°F |
| June | 64°F | 52°F | 2.7 in | 64°F |
| July | 68°F | 55°F | 3.1 in | 66°F |
| August | 68°F | 57°F | 2.4 in | 66°F |
| Septemberthis month | 64°F | 54°F | 2.7 in | 66°F |
| October | 55°F | 48°F | 4.3 in | 61°F |
| November | 50°F | 43°F | 3.6 in | 52°F |
| December | 46°F | 39°F | 3.9 in | 46°F |
Ten-year average (2015–2024) of measured daily observations, not a brochure estimate.
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Good to know
Flying to Cardiff — your questions answered
- When is it warm in Cardiff?
- No month in Cardiff averages a daily high of 75°F or warmer — the warmest is July at 68°F, and the coolest is January at 45°F. These are ten-year averages (2015–2024) of measured observations, not estimates.
- What is the weather like in Cardiff in September?
- In September, Cardiff averages a daily high of 64°F and an overnight low of 54°F; about 2.7 inches of rain fall across the month; the sea averages 66°F. Ten-year measured averages — an individual week can differ.
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