Temperature
Cold by day, freezing at night.
Not the best time: Cold conditions during longer outdoor plans are the main limitation.
Cold by day, freezing at night.
It rains on most days. About 23 wet days, more than in most months.
Cloudier spells limit sunshine.
Humidity is rarely noticeable in the cool air.
In December, afternoons feel about 33° and nights feel near 24°.
Mostly cloudy skies this month.
Calm winds are typical in December.
December late afternoons are around 38°F, easing to about 34°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 35 | 24 | 8.9 | 26 | 7.2 | 82 |
| Feb | 37 | 26 | 6.7 | 21 | 7.8 | 80 |
| Mar | 45 | 31 | 6.4 | 20 | 8.8 | 75 |
| Apr | 58 | 40 | 5.2 | 15 | 9.3 | 72 |
| May | 69 | 51 | 6.0 | 16 | 9.7 | 73 |
| Jun | 75 | 60 | 7.2 | 19 | 9.4 | 78 |
| Jul | 81 | 68 | 10.5 | 23 | 9.3 | 82 |
| Aug | 83 | 69 | 8.8 | 21 | 10.0 | 81 |
| Sep | 76 | 62 | 8.3 | 18 | 8.3 | 82 |
| Oct | 65 | 50 | 7.5 | 17 | 7.8 | 82 |
| Nov | 53 | 39 | 6.5 | 19 | 7.0 | 82 |
| Dec | 41 | 28 | 8.4 | 23 | 6.8 | 82 |
Similar climates
Want a side-by-side climate view? Compare Nozawa Onsen with Nagano.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology