Average temperature in January is 6.2 °C
Average daytime temperature is 9.8 °C
Average night temperature is 2.6 °C
Absolute maximum temperature: 15.7 °C
Absolute minimum temperature: -4 °C
Number of sunny days: 22
Number of rainy days: 8
Number of snow days: 1
Precipitation sum: 53 mm
* Weather data for Hamamatsu Japan is based on climate observations for 2023 year
| Gennaio (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | 10.5 | 10.2 | 9 | 8 | 8.9 | 9.4 | 10.4 | 11.3 | 11.8 | 8.5 | 11.6 | 13.5 | 15.1 | 14.8 | 15.7 | 13 | 11.2 | 12.1 | 11.6 | 10.5 | 7.9 | 9.5 | 9.4 | 9.2 | 2.7 | 5.5 | 5.3 | 6.2 | 6.2 | 8.2 | 7.7 |
| Apparent max temperature | 3.8 | 3.9 | 2.6 | 2.1 | 1.7 | 2.9 | 5.7 | 5.5 | 6.2 | 0 | 5.1 | 7.2 | 13.7 | 15.1 | 14.8 | 9.1 | 8 | 5.5 | 8.1 | 3.9 | 0.8 | 3.7 | 7.5 | 4.2 | -6.1 | -1.3 | 1.1 | -1 | -0.6 | 0.1 | 1.2 |
| Mean temperature | 7.7 | 5.7 | 5.2 | 4.8 | 5.2 | 5.6 | 6.8 | 7.7 | 8.3 | 4.3 | 5.4 | 7 | 12.3 | 12.5 | 12.9 | 7.1 | 8.6 | 6.7 | 6.1 | 6.5 | 4 | 6.6 | 7.1 | 1.8 | 0 | 3.6 | 2.2 | 2.7 | 3.6 | 3.6 | 3.8 |
| Apparent mean temperature | 0.2 | -3.5 | -2.7 | -4.3 | -2.5 | -1.4 | -0.9 | 0.8 | -3.3 | -4.7 | -4.4 | -2.6 | 3.1 | 5 | 7.2 | -3.6 | 2.4 | -2.3 | -1.7 | -5.6 | -3.9 | -0.6 | 0.5 | -12.4 | -8.2 | -4.4 | -6.8 | -6.7 | -4.7 | -7.5 | -4.2 |
| Minimum temperature | 5.6 | 2 | 2.2 | 1.9 | 3.2 | 2.2 | 4.2 | 5.5 | 3.8 | 0.8 | 0.4 | 1.3 | 6.9 | 7 | 10.3 | 0.7 | 5.6 | 1.9 | 1.9 | 2.1 | 1.8 | 4.7 | 5.8 | -4 | -1.5 | 1.9 | -0.8 | -0.2 | 0.9 | 0 | 0.2 |
| Apparent min temperature | 2 | -0.1 | -0.4 | -1.2 | -0.8 | 0.9 | 1.9 | 2.6 | 3 | -2.5 | 0.5 | 2.4 | 10.8 | 10.8 | 11.8 | 2.2 | 5.1 | 1.2 | 2.3 | -0.2 | -2.2 | 2.1 | 4.5 | -6 | -7.1 | -2.7 | -2.9 | -3.7 | -2.4 | -3.5 | -1.7 |
| Gennaio | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 9.9 | 10 | 10 | 10 | 10 | 10 | 10 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.2 | 10.2 | 10.2 | 10.2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.4 | 10.4 | 10.4 | 10.4 | 10.5 |
| Sunshine duration (h) | 8.7 | 8.8 | 8.8 | 8.8 | 8.7 | 8.6 | 8.9 | 8.9 | 9 | 9.1 | 9.1 | 9.1 | 6.9 | 0.6 | 6 | 5.2 | 8.1 | 8.2 | 9.3 | 9.3 | 9 | 8.7 | 1.8 | 7.9 | 9.4 | 8.7 | 2.5 | 9.5 | 9.5 | 9.6 | 9.6 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 23.2 | 17.4 | 4.1 | 0.7 | 0 | 0 | 0 | 0 | 0 | 0.2 | 1.4 | 0.2 | 0.1 | 0 | 6 | 0 | 0 | 0 | 0 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 8 | 16 | 3 | 0 | 0 | 0 | 0 | 0 | 2 | 8 | 1 | 1 | 0 | 8 | 0 | 0 | 0 | 0 |
| Wind speed (m/s) | 33.7 | 32.1 | 27.4 | 31.2 | 33.3 | 30.1 | 25 | 33.2 | 34.9 | 39.5 | 27.9 | 29.2 | 13.4 | 24 | 17.3 | 30.2 | 20.7 | 34.5 | 20.9 | 36.6 | 34.4 | 25.2 | 23.7 | 51.1 | 42.4 | 35.6 | 31.9 | 32.2 | 30.1 | 40.3 | 32.5 |
In January 2023, the highest daytime temperature in Hamamatsu was 15.7°C.
While the minimum temperature at night dropped to -4°C.
The average nighttime and daytime temperatures during January in Hamamatsu are 2.6°C and 9.8°C respectively.
The precipitation sum in January is about 53 mm.