Average annual temperature is 15.3 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: -11.2 °C
Number of sunny days: 160 days
Number of rainy days: 200 days
Number of snow days: 5 days
Look at detailed online map of Sumiyamachō
* Weather data for Sumiyamachō 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) | 14.2 | 15.0 | 20.3 | 25.0 | 30.7 | 30.9 | 35.3 | 33.9 | 31.5 | 24.9 | 23.7 | 18.9 |
| Average daytime temperature (°C) | 8.1 | 9.3 | 15.8 | 18.5 | 22.3 | 25.6 | 31.3 | 30.2 | 29.0 | 21.3 | 16.4 | 11.6 |
| Average temperature (°C) | 3.6 | 4.7 | 10.4 | 13.4 | 17.6 | 21.6 | 26.5 | 26.4 | 24.7 | 16.2 | 11.7 | 6.5 |
| Average night temperature (°C) | 0.1 | 1.1 | 6.0 | 8.9 | 13.5 | 18.4 | 22.4 | 23.6 | 21.4 | 12.3 | 7.8 | 2.7 |
| Absolute minimum temperature (°C) | -11.2 | -2.1 | -0.8 | 4.9 | 6.4 | 12.5 | 18.8 | 21.3 | 16.9 | 7.7 | 1.9 | -3.7 |
| 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 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.2 | 7.0 | 8.4 | 8.1 | 8.9 | 6.6 | 10.5 | 9.6 | 9.4 | 8.6 | 7.5 | 7.2 |
| Precipitation (mm) | 36 | 51 | 102 | 181 | 322 | 410 | 89 | 443 | 101 | 88 | 73 | 55 |
| Sunny days | 13 | 13 | 17 | 15 | 16 | 11 | 9 | 4 | 5 | 18 | 17 | 22 |
| Rainy days | 15 | 13 | 14 | 15 | 15 | 19 | 22 | 27 | 25 | 13 | 13 | 9 |
| Snow days | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Sumiyamachō during the most sunny months:
The largest precipitation sum in Sumiyamachō is at