Average temperature in December is 10 °C
Average daytime temperature is 13 °C
Average night temperature is 7.4 °C
Absolute maximum temperature: 22.1 °C
Absolute minimum temperature: 1.3 °C
Number of sunny days: 10
Number of rainy days: 20
Number of snow days: 1
Precipitation sum: 125 mm
* Weather data for Nagasaki Japan is based on climate observations for 2023 year
| December (°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 | 11.3 | 11.4 | 14.1 | 14.2 | 15.5 | 16.5 | 13.8 | 15.4 | 19.1 | 20.1 | 19 | 17 | 16.6 | 19.1 | 22.1 | 12 | 6.2 | 7.4 | 7.5 | 10 | 4.4 | 4 | 6.7 | 10.2 | 9 | 10.7 | 13.7 | 14.5 | 14 | 14.1 | 14.4 |
| Apparent max temperature | 5.7 | 8.1 | 10.8 | 12.5 | 13.9 | 14.7 | 9.9 | 13.4 | 18.5 | 19.1 | 19.3 | 17.8 | 14.7 | 19.2 | 22.1 | 9.3 | 0.5 | 4.1 | 5 | 5.3 | -0.8 | -0.5 | 3 | 7.4 | 4.9 | 8.3 | 11.5 | 13.1 | 11.9 | 13.2 | 11 |
| Mean temperature | 8.1 | 8.9 | 9.9 | 11.7 | 11 | 14.2 | 9.7 | 13.6 | 14.6 | 15.9 | 17.3 | 13.6 | 13.7 | 17.5 | 17.3 | 7.6 | 4.4 | 5.4 | 6.6 | 5.9 | 2.3 | 3.1 | 4.8 | 6.9 | 6.9 | 8.5 | 8.9 | 10.2 | 9 | 11.9 | 10.2 |
| Apparent mean temperature | 2.1 | 3.9 | 3.7 | 7.9 | 6.5 | 7.3 | 3.7 | 10.2 | 9.4 | 12.4 | 14.8 | 8 | 10 | 14.3 | 9.1 | -2.2 | -2.1 | 0.2 | 1.5 | -2.6 | -4.2 | -3.2 | -0.2 | 1.2 | 2.8 | 3.9 | 3.2 | 5.3 | 3 | 8.3 | 4.9 |
| Minimum temperature | 5.7 | 6.8 | 6.4 | 9.4 | 7.7 | 11 | 5.9 | 11.6 | 10.4 | 13.7 | 15.3 | 10.7 | 11.8 | 14.9 | 12.2 | 3.6 | 3.5 | 3.3 | 4.5 | 1.9 | 1.3 | 2.3 | 3.3 | 4.8 | 5.5 | 6.2 | 5.3 | 7.3 | 5.1 | 9.7 | 7.3 |
| Apparent min temperature | 4.2 | 6.3 | 7.4 | 10.1 | 9.4 | 11.6 | 7 | 12.1 | 14.2 | 15 | 17.1 | 12.3 | 12.4 | 16.7 | 16.3 | 2.4 | -0.5 | 2 | 3.9 | 1 | -2.8 | -1.9 | 1.5 | 3.9 | 3.7 | 6.4 | 7 | 8.5 | 7 | 10.7 | 6.2 |
| December | 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) | 10.2 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10.1 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
| Sunshine duration (h) | 7.2 | 8.8 | 7.1 | 8.8 | 6.9 | 4.4 | 9 | 8.8 | 5.8 | 8.8 | 1.6 | 1.2 | 8.8 | 0.7 | 8.3 | 0 | 7 | 4.1 | 0 | 3.2 | 5 | 8.9 | 3 | 4.6 | 4.4 | 1.8 | 7.9 | 8.7 | 8.9 | 5.2 | 8.9 |
| Precipitation (mm) | 0.1 | 0.5 | 0.3 | 3.3 | 0.8 | 2.2 | 0 | 0 | 0 | 2.4 | 68.4 | 1.6 | 0 | 4 | 16 | 1.6 | 0 | 7.5 | 4.3 | 1.4 | 1 | 0.1 | 0 | 2.7 | 0.1 | 0 | 0 | 0 | 0 | 5.9 | 0.5 |
| Precipitation hours | 1 | 5 | 2 | 4 | 2 | 4 | 0 | 0 | 0 | 6 | 17 | 6 | 0 | 8 | 15 | 8 | 0 | 11 | 9 | 12 | 10 | 1 | 0 | 13 | 1 | 0 | 0 | 0 | 0 | 11 | 3 |
| Wind speed (m/s) | 25 | 11.5 | 15.5 | 10.2 | 10.5 | 25.3 | 17.3 | 14 | 10.9 | 15.1 | 25.8 | 15.5 | 12.4 | 24.5 | 26.2 | 28 | 28.8 | 11.9 | 16.3 | 26.2 | 22.6 | 26.4 | 11.4 | 13.6 | 20.5 | 10.1 | 8.1 | 11.5 | 9.4 | 26.2 | 33.2 |
In December 2023, the highest daytime temperature in Nagasaki was 22.1°C.
While the minimum temperature at night dropped to 1.3°C.
The average nighttime and daytime temperatures during December in Nagasaki are 7.4°C and 13°C respectively.
The precipitation sum in December is about 125 mm.