Average temperature in January is 7.6 °C
Average daytime temperature is 10.6 °C
Average night temperature is 5.3 °C
Absolute maximum temperature: 20 °C
Absolute minimum temperature: -2.6 °C
Number of sunny days: 16
Number of rainy days: 15
Number of snow days:
Precipitation sum: 102 mm
* Weather data for Nagasaki 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 | 10.7 | 11 | 9.2 | 9.2 | 11.3 | 11.5 | 10.1 | 12.3 | 16.1 | 12.2 | 15.1 | 15.8 | 17.9 | 20 | 14.1 | 9.6 | 9.8 | 8.8 | 9.8 | 11.9 | 9.2 | 7.9 | 12.3 | 3.1 | 4.2 | 6.4 | 5.6 | 5.1 | 7.6 | 9 | 13 |
| Apparent max temperature | 7.1 | 7 | 4.8 | 4.8 | 7.4 | 9.3 | 4.3 | 10.1 | 14.5 | 8.3 | 13.6 | 15.9 | 18.3 | 21.7 | 13.2 | 4.7 | 7.5 | 5.1 | 6.4 | 7.9 | 5.3 | 4.9 | 8.6 | -4.3 | 1.3 | 4.2 | 0.9 | 0.7 | 3.9 | 4.2 | 9.8 |
| Mean temperature | 7.8 | 6.8 | 6.1 | 5.9 | 7.9 | 9 | 7.6 | 7.4 | 11.5 | 8.4 | 11.1 | 13.7 | 16.9 | 15.2 | 10.5 | 7.3 | 7.6 | 7.1 | 8.4 | 7 | 6.2 | 6.5 | 8.6 | -0.9 | 1.3 | 5.5 | 3 | 2.6 | 6.6 | 4.9 | 9.4 |
| Apparent mean temperature | 2.8 | 0.2 | 0.3 | 0.1 | 2.4 | 2.5 | 2 | 1.4 | 3.8 | 2.4 | 6.4 | 8.6 | 13.3 | 10.4 | 2 | 2.7 | 2.1 | 2 | 4.2 | 0.2 | 0.8 | 2 | -3.4 | -9.7 | -6.6 | 0.6 | -4.8 | -4.2 | 0.7 | -1.5 | 2.4 |
| Minimum temperature | 5.4 | 3.4 | 3.8 | 3.2 | 5.1 | 8 | 4.8 | 3.8 | 7.5 | 5.3 | 8.4 | 9.8 | 15 | 11.9 | 6.2 | 5.9 | 6.2 | 5.6 | 7.1 | 4 | 4.3 | 5.7 | 3.8 | -2.6 | -1.2 | 4.3 | 0.9 | 0 | 5.2 | 1.9 | 5.5 |
| Apparent min temperature | 4.7 | 3.4 | 2.3 | 2.5 | 5 | 6.4 | 3.5 | 5.1 | 9 | 5.2 | 9.5 | 12.2 | 15.9 | 14.8 | 7.7 | 3.8 | 4.2 | 3.3 | 5.5 | 2.8 | 2.8 | 3.3 | 4.7 | -8.3 | -2.7 | 2.5 | -3.2 | -2.2 | 2.7 | 1 | 6.6 |
| 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) | 10 | 10 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.2 | 10.3 | 10.3 | 10.3 | 10.3 | 10.3 | 10.4 | 10.4 | 10.4 | 10.4 | 10.5 | 10.5 | 10.5 | 10.5 | 10.6 | 10.6 |
| Sunshine duration (h) | 9 | 8.1 | 9 | 9 | 9 | 4 | 8.2 | 9 | 9 | 9 | 9 | 1.8 | 1 | 6.7 | 0 | 7.4 | 1.9 | 4.3 | 1.5 | 8 | 9.1 | 0.6 | 9 | 7.9 | 9 | 2.6 | 5.1 | 6 | 5.2 | 9.5 | 9.2 |
| Precipitation (mm) | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 1.5 | 3.6 | 58.3 | 0.5 | 3.3 | 0 | 0.9 | 0 | 0 | 0.5 | 0 | 25 | 0.2 | 0.9 | 0 | 3.2 | 0.2 | 0.3 | 0.8 | 0 | 0 |
| Precipitation hours | 0 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 4 | 10 | 22 | 2 | 13 | 0 | 6 | 0 | 0 | 5 | 0 | 20 | 1 | 9 | 0 | 10 | 2 | 3 | 6 | 0 | 0 |
| Wind speed (m/s) | 16.4 | 14.5 | 15.5 | 15.3 | 13.8 | 24.9 | 28.2 | 6.9 | 15.5 | 19.1 | 8.2 | 21.4 | 34.3 | 14.5 | 22.3 | 22.6 | 16.8 | 17.2 | 14 | 24.5 | 11.6 | 19.2 | 32.3 | 41.9 | 17.2 | 20.2 | 30.5 | 25.2 | 21.3 | 19.7 | 16.3 |
In January 2023, the highest daytime temperature in Nagasaki was 20°C.
While the minimum temperature at night dropped to -2.6°C.
The average nighttime and daytime temperatures during January in Nagasaki are 5.3°C and 10.6°C respectively.
The precipitation sum in January is about 102 mm.