Average annual temperature is 15.4 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: -7.8 °C
Number of sunny days: 110 days
Number of rainy days: 247 days
Number of snow days: 8 days
Look at detailed online map of Ōmorichō
* Weather data for Ōmorichō 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) | 15.7 | 15.1 | 22.5 | 26.2 | 32.3 | 31.4 | 35.7 | 37.5 | 35.4 | 26.4 | 25.9 | 19.3 |
| Average daytime temperature (°C) | 7.2 | 8.0 | 15.2 | 18.1 | 22.5 | 26.4 | 31.6 | 34.4 | 31.1 | 21.2 | 16.6 | 10.8 |
| Average temperature (°C) | 3.3 | 3.8 | 9.4 | 12.9 | 17.3 | 21.9 | 26.7 | 29.4 | 25.9 | 15.8 | 11.6 | 6.5 |
| Average night temperature (°C) | -0.2 | -0.2 | 3.8 | 8.2 | 12.3 | 17.8 | 22.2 | 25.2 | 21.7 | 11.0 | 7.5 | 2.6 |
| Absolute minimum temperature (°C) | -6.0 | -7.8 | -3.2 | 1.2 | 3.2 | 11.6 | 15.7 | 22.7 | 15.1 | 5.3 | -2.9 | -4.9 |
| 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 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.3 | 6.0 | 8.0 | 8.1 | 8.9 | 7.9 | 9.3 | 10.5 | 8.8 | 8.4 | 6.5 | 4.8 |
| Precipitation (mm) | 148 | 86 | 129 | 211 | 256 | 335 | 220 | 117 | 160 | 140 | 167 | 211 |
| Sunny days | 3 | 7 | 17 | 13 | 16 | 8 | 10 | 6 | 8 | 10 | 6 | 6 |
| Rainy days | 25 | 17 | 14 | 17 | 15 | 22 | 21 | 25 | 22 | 21 | 24 | 24 |
| Snow days | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Ōmorichō during the most sunny months:
The largest precipitation sum in Ōmorichō is at