Average annual temperature is 17.2 °C
Absolute maximum temperature: 40.1 °C
Absolute minimum temperature: -5.6 °C
Number of sunny days: 191 days
Number of rainy days: 174 days
Look at detailed online map of Cardiff
* Weather data for Cardiff United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 21.9 | 24.9 | 26.1 | 27.9 | 30.5 | 37.8 | 38.5 | 40.1 | 35.5 | 31.8 | 26.5 | 18.4 |
| Average daytime temperature (°C) | 12.7 | 15.1 | 18.1 | 21.4 | 26.8 | 32.4 | 34.2 | 35.0 | 30.1 | 23.5 | 16.8 | 13.0 |
| Average temperature (°C) | 7.6 | 8.8 | 11.6 | 15.1 | 20.7 | 25.5 | 27.6 | 28.4 | 23.9 | 17.8 | 10.9 | 7.8 |
| Average night temperature (°C) | 3.8 | 4.8 | 6.8 | 9.8 | 15.6 | 19.8 | 22.7 | 22.8 | 18.6 | 13.3 | 6.3 | 3.9 |
| Absolute minimum temperature (°C) | -3.9 | -5.6 | -5.1 | 4.7 | 6.5 | 16.0 | 18.5 | 17.6 | 15.1 | -1.5 | -2.7 | -2.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 5.9 | 5.8 | 7.9 | 8.8 | 10.7 | 12.4 | 11.2 | 11.6 | 10.4 | 8.0 | 7.8 | 6.9 |
| Precipitation (mm) | 81 | 111 | 198 | 108 | 96 | 71 | 98 | 57 | 61 | 138 | 68 | 52 |
| Sunny days | 16 | 12 | 14 | 18 | 13 | 13 | 14 | 16 | 16 | 17 | 21 | 21 |
| Rainy days | 15 | 16 | 17 | 12 | 18 | 17 | 17 | 15 | 14 | 14 | 9 | 10 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Cardiff during the most sunny months:
The largest precipitation sum in Cardiff is at