Average annual temperature is 12.2 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -16.1 °C
Number of sunny days: 183 days
Number of rainy days: 168 days
Number of snow days: 14 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) | 17.0 | 15.6 | 21.1 | 26.2 | 31.8 | 34.8 | 34.0 | 35.7 | 32.5 | 28.5 | 22.8 | 15.8 |
| Average daytime temperature (°C) | 4.3 | 7.6 | 9.6 | 18.2 | 24.5 | 29.1 | 28.5 | 27.7 | 24.9 | 18.0 | 11.1 | 7.9 |
| Average temperature (°C) | 0.3 | 1.8 | 3.9 | 11.0 | 17.9 | 22.4 | 23.3 | 22.4 | 19.7 | 13.3 | 5.8 | 3.9 |
| Average night temperature (°C) | -2.5 | -2.2 | -0.4 | 5.1 | 11.8 | 16.3 | 18.4 | 17.9 | 15.4 | 9.4 | 1.5 | 1.0 |
| Absolute minimum temperature (°C) | -15.4 | -16.1 | -11.6 | -2.0 | 1.9 | 10.0 | 13.7 | 10.9 | 9.4 | -2.5 | -10.3 | -7.9 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.4 | 7.7 | 6.5 | 9.1 | 10.8 | 12.1 | 12.4 | 10.9 | 8.6 | 6.7 | 7.4 | 4.6 |
| Precipitation (mm) | 60 | 98 | 119 | 90 | 115 | 22 | 121 | 187 | 122 | 105 | 22 | 75 |
| Sunny days | 7 | 17 | 10 | 16 | 19 | 21 | 13 | 13 | 14 | 14 | 22 | 17 |
| Rainy days | 15 | 9 | 20 | 14 | 12 | 9 | 18 | 18 | 16 | 16 | 8 | 13 |
| Snow days | 9 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
The best time to visit Cardiff during the most sunny months:
The largest precipitation sum in Cardiff is at