Average annual temperature is 15.8 °C
Absolute maximum temperature: 37.2 °C
Absolute minimum temperature: -10.1 °C
Number of sunny days: 153 days
Number of rainy days: 207 days
Number of snow days: 5 days
Look at detailed online map of Nagaoka
* Weather data for Nagaoka 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) | 15.6 | 16.3 | 23.5 | 25.9 | 26.9 | 30.8 | 35.4 | 37.2 | 33.6 | 26.3 | 26.6 | 19.8 |
| Average daytime temperature (°C) | 9.0 | 9.7 | 16.6 | 19.3 | 22.9 | 26.0 | 31.6 | 33.1 | 31.0 | 22.3 | 17.4 | 12.3 |
| Average temperature (°C) | 3.6 | 4.8 | 10.4 | 13.8 | 17.9 | 22.0 | 27.0 | 28.5 | 26.0 | 16.6 | 11.9 | 6.9 |
| Average night temperature (°C) | -1.0 | 0.4 | 4.9 | 8.8 | 13.3 | 18.1 | 23.2 | 25.0 | 22.0 | 11.8 | 7.5 | 2.4 |
| Absolute minimum temperature (°C) | -10.1 | -3.8 | -1.4 | 2.5 | 5.9 | 10.8 | 19.6 | 23.1 | 17.8 | 7.5 | 1.0 | -3.3 |
| 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) | 7.1 | 6.1 | 8.5 | 8.0 | 9.5 | 6.8 | 9.8 | 10.1 | 10.0 | 8.8 | 7.4 | 7.0 |
| Precipitation (mm) | 51 | 42 | 120 | 192 | 249 | 332 | 113 | 217 | 73 | 54 | 112 | 48 |
| Sunny days | 7 | 10 | 19 | 15 | 16 | 9 | 12 | 9 | 11 | 14 | 14 | 17 |
| Rainy days | 22 | 15 | 12 | 15 | 15 | 21 | 19 | 22 | 19 | 17 | 16 | 14 |
| Snow days | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Nagaoka is at