Average annual temperature is 8.3 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -18.1 °C
Number of sunny days: 155 days
Number of rainy days: 171 days
Number of snow days: 39 days
Look at detailed online map of Shōwa
* Weather data for Shōwa 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) | 3.3 | 5.4 | 16.2 | 17.8 | 25.6 | 29.5 | 33.4 | 33.1 | 29.2 | 23.5 | 19.7 | 7.0 |
| Average daytime temperature (°C) | -5.4 | -3.6 | 6.1 | 13.0 | 17.8 | 22.4 | 26.9 | 27.5 | 23.9 | 15.9 | 9.5 | 0.1 |
| Average temperature (°C) | -9.3 | -7.5 | 1.0 | 7.8 | 12.0 | 17.1 | 21.9 | 23.3 | 19.5 | 11.0 | 4.9 | -3.6 |
| Average night temperature (°C) | -13.6 | -11.7 | -3.4 | 3.5 | 7.1 | 12.9 | 18.0 | 20.2 | 15.9 | 7.1 | 0.9 | -6.7 |
| Absolute minimum temperature (°C) | -17.5 | -18.1 | -9.5 | -4.2 | 0.4 | 5.5 | 13.5 | 16.2 | 9.0 | 1.4 | -8.2 | -12.9 |
| 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) | 9.4 | 10.5 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 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) | 7.3 | 7.6 | 8.3 | 8.2 | 9.4 | 9.0 | 9.2 | 6.6 | 7.1 | 7.8 | 6.3 | 6.0 |
| Precipitation (mm) | 29 | 45 | 78 | 170 | 47 | 81 | 77 | 105 | 153 | 106 | 146 | 47 |
| Sunny days | 18 | 14 | 16 | 11 | 14 | 12 | 14 | 4 | 10 | 16 | 10 | 16 |
| Rainy days | 2 | 1 | 11 | 19 | 17 | 18 | 17 | 27 | 20 | 15 | 18 | 6 |
| Snow days | 11 | 13 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 9 |
Months with the longest average daylight duration in Shōwa:
The largest precipitation sum in Shōwa is at