Average annual temperature is 8.2 °C
Absolute maximum temperature: 25.1 °C
Absolute minimum temperature: -30.3 °C
Number of sunny days: 165 days
Number of rainy days: 178 days
Number of snow days: 22 days
Look at detailed online map of Castalia
* Weather data for Castalia Canada is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 10.0 | 9.9 | 7.2 | 15.3 | 20.7 | 19.2 | 25.1 | 25.1 | 25.0 | 22.0 | 13.1 | 14.1 |
| Average daytime temperature (°C) | 3.5 | 1.2 | 3.6 | 8.9 | 13.6 | 15.4 | 21.3 | 21.0 | 18.9 | 15.1 | 6.6 | 4.9 |
| Average temperature (°C) | 0.7 | -2.6 | 1.3 | 5.8 | 9.9 | 12.7 | 18.0 | 17.4 | 15.7 | 12.3 | 3.8 | 2.4 |
| Average night temperature (°C) | -1.7 | -6.3 | -0.7 | 3.3 | 7.2 | 10.7 | 15.6 | 14.7 | 13.5 | 10.2 | 1.3 | 0.0 |
| Absolute minimum temperature (°C) | -7.3 | -30.3 | -5.7 | -2.8 | 3.8 | 6.9 | 14.0 | 11.9 | 8.0 | 3.2 | -5.7 | -7.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.8 | 15.5 | 15.2 | 14.0 | 12.5 | 11.0 | 9.6 | 8.9 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.0 | 5.8 | 7.0 | 9.0 | 11.4 | 6.4 | 7.3 | 8.8 | 7.7 | 7.5 | 5.9 | 4.1 |
| Precipitation (mm) | 252 | 51 | 90 | 49 | 64 | 205 | 176 | 159 | 154 | 117 | 59 | 115 |
| Sunny days | 8 | 12 | 12 | 17 | 19 | 9 | 13 | 10 | 19 | 11 | 17 | 18 |
| Rainy days | 17 | 7 | 13 | 13 | 12 | 21 | 18 | 21 | 11 | 20 | 12 | 13 |
| Snow days | 6 | 9 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
The best time to visit Castalia during the most sunny months:
Months with the longest average daylight duration in Castalia:
The largest precipitation sum in Castalia is at