Temperature
Pleasant by day, mild at night.
Warm days and some sun. Heavier storm-season rain is the main drawback.
Pleasant by day, mild at night.
It rains on most days. About 18 wet days, fewer than in most months.
Cloudier spells limit sunshine.
Humid air and frequent rain shape this month.
In September, afternoons feel about 77° and nights feel near 65°.
Mostly cloudy skies this month.
Calm winds are typical in September.
September late afternoons are around 73°F, easing to about 68°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