Average annual temperature is 10.3 °C
Absolute maximum temperature: 26.8 °C
Absolute minimum temperature: -9.2 °C
Number of sunny days: 115 days
Number of rainy days: 189 days
Number of snow days: 61 days
Look at detailed online map of Muroran
* Weather data for Muroran Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 8.2 | 5.7 | 7.3 | 9.8 | 16.5 | 21.4 | 26.4 | 26.8 | 25.7 | 21.1 | 18.5 | 11.2 |
| Average daytime temperature (°C) | 0.3 | 0.7 | 4.5 | 7.5 | 11.5 | 15.5 | 21.5 | 24.7 | 23.1 | 16.4 | 10.3 | 3.3 |
| Average temperature (°C) | -1.2 | -0.6 | 3.0 | 6.2 | 9.9 | 14.4 | 20.4 | 23.8 | 21.9 | 15.0 | 8.4 | 1.8 |
| Average night temperature (°C) | -2.7 | -2.3 | 1.7 | 5.0 | 8.5 | 13.4 | 19.4 | 22.9 | 20.7 | 13.3 | 6.2 | 0.0 |
| Absolute minimum temperature (°C) | -9.2 | -6.2 | -0.1 | 1.5 | 5.4 | 10.9 | 16.4 | 20.8 | 17.9 | 6.3 | -1.8 | -4.3 |
| 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) | 9.5 | 10.6 | 11.9 | 13.4 | 14.6 | 15.2 | 14.9 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.7 | 7.4 | 8.8 | 8.9 | 9.8 | 8.7 | 10.1 | 9.0 | 7.1 | 8.4 | 6.6 | 5.5 |
| Precipitation (mm) | 119 | 50 | 60 | 93 | 46 | 127 | 87 | 157 | 190 | 115 | 186 | 83 |
| Sunny days | 1 | 6 | 18 | 12 | 17 | 11 | 15 | 7 | 10 | 10 | 5 | 3 |
| Rainy days | 6 | 5 | 12 | 18 | 14 | 19 | 16 | 24 | 20 | 21 | 23 | 11 |
| Snow days | 24 | 17 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 17 |
The largest precipitation sum in Muroran is at