Average annual temperature is 7.3 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -21.6 °C
Number of sunny days: 214 days
Number of rainy days: 87 days
Number of snow days: 64 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) | 9.6 | 9.7 | 11.8 | 21.1 | 25.0 | 31.0 | 35.2 | 33.9 | 31.0 | 24.2 | 17.3 | 12.6 |
| Average daytime temperature (°C) | 1.8 | 3.0 | 5.4 | 10.9 | 19.0 | 24.5 | 31.8 | 30.1 | 25.6 | 17.2 | 9.7 | 4.7 |
| Average temperature (°C) | -3.6 | -3.7 | -0.9 | 3.6 | 10.0 | 15.7 | 22.1 | 20.8 | 16.3 | 8.7 | 1.3 | -3.8 |
| Average night temperature (°C) | -7.6 | -9.0 | -6.3 | -2.6 | 1.8 | 6.4 | 12.1 | 11.9 | 7.6 | 1.6 | -4.5 | -10.1 |
| Absolute minimum temperature (°C) | -16.7 | -16.4 | -15.5 | -9.7 | -1.6 | 3.8 | 6.2 | 8.4 | 3.0 | -17.3 | -15.8 | -21.6 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 6.0 | 8.0 | 8.1 | 11.0 | 12.1 | 12.6 | 13.4 | 12.2 | 11.2 | 9.2 | 8.2 | 7.0 |
| Precipitation (mm) | 72 | 35 | 126 | 51 | 20 | 39 | 4 | 31 | 4 | 66 | 24 | 41 |
| Sunny days | 13 | 14 | 8 | 16 | 19 | 15 | 22 | 21 | 23 | 22 | 23 | 18 |
| Rainy days | 3 | 3 | 6 | 8 | 12 | 15 | 9 | 10 | 7 | 9 | 4 | 1 |
| Snow days | 15 | 11 | 17 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 12 |
The best time to visit Cardiff during the most sunny months:
The largest precipitation sum in Cardiff is at