Average temperature in January is 4.2 °C
Average daytime temperature is 8.6 °C
Average night temperature is 0.1 °C
Absolute maximum temperature: 17.5 °C
Absolute minimum temperature: -7.5 °C
Number of sunny days: 10
Number of rainy days: 19
Number of snow days: 2
Precipitation sum: 58 mm
* Weather data for Yamatokōriyama Japan is based on climate observations for 2023 year
| January (°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 | 9 | 8.7 | 8.7 | 8.7 | 7.7 | 8.7 | 9.2 | 10.1 | 10.7 | 7.5 | 9.5 | 13.3 | 17.5 | 14.8 | 13.8 | 10.1 | 8.1 | 9.9 | 8.9 | 9.3 | 6.7 | 8 | 6.6 | 8 | 2.4 | 4.2 | 4.1 | 4.7 | 5.3 | 6.9 | 6.3 |
| Apparent max temperature | 5.3 | 5.1 | 4.2 | 3.2 | 3.5 | 5.6 | 6.4 | 6.7 | 7.5 | 1.9 | 6.3 | 11.2 | 17.1 | 15.6 | 12 | 7.6 | 5.6 | 6.3 | 5.4 | 4 | 2 | 5.3 | 4.7 | 2.2 | -4 | -0.6 | 0.1 | -0.1 | -0.4 | 1.3 | 2.4 |
| Mean temperature | 5.3 | 3.1 | 3.5 | 3.9 | 2.7 | 4 | 5.7 | 5.5 | 7.1 | 2.3 | 3.3 | 6.7 | 12.6 | 11.6 | 10.2 | 4.8 | 5 | 4.5 | 4.4 | 4.5 | 1.8 | 4.8 | 5 | -0.1 | -2 | 1.7 | 1.6 | 0.8 | 2.6 | 1.3 | 1.6 |
| Apparent mean temperature | -1.1 | -4.8 | -4.2 | -3.4 | -3 | -4.1 | 0.4 | -1.6 | -1.8 | -5.9 | -4.6 | -0.4 | 6.4 | 4.9 | 6.3 | -4.5 | -1.9 | -2.4 | -1.7 | -4.6 | -6.7 | -1.3 | -0.2 | -10.7 | -12.3 | -3.7 | -5.6 | -7.2 | -3.6 | -7 | -6.4 |
| Minimum temperature | 1.6 | -1.4 | -0.9 | -0.4 | -0.2 | -0.2 | 3.3 | 1.7 | 1.7 | -2.6 | -0.8 | 2.5 | 8.5 | 6.9 | 7.7 | -1.4 | 1.3 | 0.4 | 1.4 | -1.3 | -3.4 | 1.3 | 2.4 | -5.4 | -7.5 | -0.4 | -1.9 | -3.5 | -0.4 | -3.5 | -1.8 |
| Apparent min temperature | 1.8 | 0.1 | 0 | 0.1 | -0.3 | 0.4 | 2.6 | 2.6 | 3.9 | -1.7 | 0.1 | 4.5 | 11.7 | 10.9 | 8.6 | 1.5 | 2.4 | 1.5 | 1.3 | 0.1 | -1.8 | 2.1 | 2.7 | -6.2 | -6.8 | -2.1 | -2.6 | -3.8 | -1.9 | -2.9 | -2.4 |
| January | 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 | 10 | 10 | 10 | 10 | 10 | 10 | 10.1 | 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 | 10.5 | 10.5 |
| Sunshine duration (h) | 6.7 | 7.1 | 8.7 | 8.6 | 7.8 | 8.3 | 3.2 | 7.4 | 9 | 8.6 | 8.9 | 9 | 4.7 | 0.7 | 5.9 | 3.8 | 8.7 | 7.3 | 9.2 | 9.3 | 8.2 | 8.8 | 0.3 | 7.1 | 9.4 | 8.8 | 1.5 | 8.7 | 8.1 | 9.6 | 9.6 |
| Precipitation (mm) | 0 | 0.5 | 0.2 | 0 | 1 | 0 | 0.6 | 0.2 | 1.9 | 0 | 0 | 0 | 23 | 7.5 | 2.5 | 1.4 | 0 | 0.5 | 0 | 0.2 | 0.1 | 2.8 | 2.3 | 2.5 | 0.1 | 0.3 | 6.7 | 1.8 | 0 | 2.3 | 0 |
| Precipitation hours | 0 | 4 | 2 | 0 | 5 | 0 | 3 | 2 | 5 | 0 | 0 | 0 | 15 | 8 | 7 | 3 | 0 | 3 | 0 | 1 | 1 | 7 | 9 | 8 | 1 | 2 | 14 | 8 | 0 | 7 | 0 |
| Wind speed (m/s) | 22.9 | 16 | 15.4 | 24.4 | 17.1 | 11.4 | 14.1 | 17.1 | 18.1 | 21.3 | 10.1 | 8.7 | 11.2 | 12.1 | 11.5 | 17 | 9.4 | 17.7 | 11.6 | 25.6 | 16.3 | 6.7 | 13.4 | 46.6 | 22.6 | 21.7 | 28.7 | 22 | 25.7 | 30.1 | 13.4 |
In January 2023, the highest daytime temperature in Yamatokōriyama was 17.5°C.
While the minimum temperature at night dropped to -7.5°C.
The average nighttime and daytime temperatures during January in Yamatokōriyama are 0.1°C and 8.6°C respectively.
The precipitation sum in January is about 58 mm.