Jōetsu Climate: Weather by Month and Best Time to Visit
Best months for Jōetsu: May, June, August.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 5°C | 1°C | 254 mm | 26 | – | – | 3.3 |
| February | 6°C | 1°C | 179 mm | 21 | – | – | 3.4 |
| March | 9°C | 3°C | 143 mm | 18 | – | – | 4.3 |
| April | 15°C | 8°C | 98 mm | 13 | – | – | 6.2 |
| May | 21°C | 14°C | 91 mm | 11 | – | – | 7.4 |
| June | 24°C | 18°C | 118 mm | 12 | – | – | 7.3 |
| July | 28°C | 22°C | 189 mm | 14 | – | – | 6.7 |
| August | 30°C | 24°C | 124 mm | 12 | – | – | 7.0 |
| September | 26°C | 20°C | 162 mm | 14 | – | – | 6.8 |
| October | 20°C | 14°C | 163 mm | 15 | – | – | 6.4 |
| November | 14°C | 9°C | 179 mm | 19 | – | – | 4.9 |
| December | 8°C | 4°C | 249 mm | 24 | – | – | 3.9 |