Average annual temperature is 16.0 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -7.2 °C
Number of sunny days: 168 days
Number of rainy days: 191 days
Number of snow days: 6 days
Look at detailed online map of Ōmaru
* Weather data for Ōmaru 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) | 12.8 | 17.0 | 23.9 | 24.6 | 29.5 | 31.0 | 36.7 | 35.6 | 33.0 | 27.3 | 25.7 | 21.3 |
| Average daytime temperature (°C) | 8.7 | 10.8 | 16.6 | 19.9 | 22.1 | 25.8 | 31.9 | 32.2 | 29.3 | 22.0 | 17.8 | 12.9 |
| Average temperature (°C) | 3.7 | 5.6 | 11.5 | 14.8 | 17.3 | 21.8 | 26.9 | 27.6 | 25.2 | 17.0 | 12.4 | 7.3 |
| Average night temperature (°C) | -0.5 | 1.3 | 7.2 | 10.3 | 13.0 | 18.5 | 22.9 | 24.1 | 22.1 | 12.7 | 8.3 | 2.7 |
| Absolute minimum temperature (°C) | -7.2 | -3.6 | 0.8 | 2.3 | 7.5 | 14.3 | 19.5 | 22.5 | 16.8 | 8.6 | 2.8 | -2.7 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 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) | 7.1 | 7.5 | 7.5 | 8.6 | 8.5 | 7.4 | 10.6 | 11.1 | 8.8 | 8.7 | 7.1 | 7.7 |
| Precipitation (mm) | 31 | 48 | 142 | 137 | 165 | 329 | 73 | 171 | 216 | 107 | 56 | 37 |
| Sunny days | 15 | 18 | 15 | 13 | 15 | 7 | 12 | 8 | 9 | 18 | 15 | 23 |
| Rainy days | 11 | 9 | 16 | 17 | 16 | 23 | 19 | 23 | 21 | 13 | 15 | 8 |
| Snow days | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Ōmaru during the most sunny months:
The largest precipitation sum in Ōmaru is at