Cardiff weather
UK towns · Wales · 51.48°N 3.18°W
Cardiff, in Wales, has its warmest weather in August, when daytime temperatures average 20.8°C, while January nights are the coldest at around 2.8°C. The town sees roughly 1367mm of rain a year; October is normally the wettest month and June the driest. Figures are averaged from 2020–2024 observations.
Climate averages
| Month | Avg high | Avg low | Rain | Rain days |
|---|---|---|---|---|
| Jan | 8.1° | 2.8° | 117mm | 15 |
| Feb | 9.7° | 4.4° | 144mm | 16 |
| Mar | 10.9° | 4.6° | 113mm | 16 |
| Apr | 13.4° | 5.4° | 77mm | 11 |
| May | 16.7° | 8.9° | 94mm | 13 |
| Jun | 19.7° | 11.6° | 68mm | 12 |
| Jul | 20.5° | 13.2° | 106mm | 17 |
| Aug | 20.8° | 13.7° | 90mm | 16 |
| Sep | 18.9° | 11.9° | 111mm | 12 |
| Oct | 15.2° | 9.8° | 184mm | 21 |
| Nov | 11.5° | 6.2° | 103mm | 15 |
| Dec | 9.1° | 4.6° | 160mm | 18 |
Cardiff weather FAQs
What is the warmest month in Cardiff?
August is typically the warmest month in Cardiff, with average daytime highs of 20.8°C. Summer afternoons (June–August) average around 20.3°C.
What is the wettest month in Cardiff?
October is usually the wettest month, with around 184mm of rain over roughly 21 rainy days. June is typically the driest (68mm).
How much does it rain in Cardiff per year?
Cardiff receives roughly 1367mm of precipitation per year, spread over about 182 days with at least 1mm of rain (based on 2020–2024 observations).
How cold are winters in Cardiff?
Winter nights (December–February) in Cardiff average around 3.9°C, with January typically the coldest month (average low 2.8°C).