SeasonMapNozawa Onsen (Nozawa) weather in August
Japan
August in Nozawa Onsen: hot, soaked, with clean air — not the time — 22 rainy days.
#9 of 12 months in Nozawa Onsen · #1321 of 1383 destinations to visit in August · comfort 17/100 (tier F)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Nozawa Onsen in August
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Nozawa Onsen climate normals — August
| Daytime high | 28°C / 83°F | 🥵 hot |
|---|---|---|
| Nighttime low | 21°C / 69°F | |
| Feels like (high) | 33°C / 91°F | |
| Rainfall | 236 mm / 9.3 in | ⛈ soaked |
| Rainy days | 22 days | |
| Humidity | 87% | 💦 very humid |
| Dew point | 22°C / 71°F | |
| Sunshine | 9.7 h/day | |
| Daylight | 13.5 h | |
| Wind | 9 km/h / 5 mph | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Nozawa Onsen in August
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer break (natsuyasumi) in Japan, school holidays in 3 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Nozawa Onsen's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherNozawa Onsen's weather peaks December–February.
Best weatherFair weatherToughest weather
What's on in Nozawa Onsen in August
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Wet season
MonsoonRisk22 rainy days and about 236 mm in the month — the real kind of rainy season, not afternoon showers.
from the climate normals
Nearby, and something's on
Within 300 km of Nozawa Onsen — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Nozawa Onsen?
Nozawa Onsen in August — FAQ
- Is August a good time to visit Nozawa Onsen?
- August in Nozawa Onsen: hot, soaked, with clean air — not the time — 22 rainy days. It ranks #9 of 12 months for Nozawa Onsen on SeasonMap's comfort score (17/100).
- What is the weather like in Nozawa Onsen in August?
- In August, Nozawa Onsen averages a daily high of 28.3°C and a low of 20.6°C, with about 235.9 mm of rain over roughly 22.1 rainy days.
- What is the air quality in Nozawa Onsen in August?
- Nozawa Onsen has a mean US Air Quality Index of about 43 in August.
Other months in Nozawa Onsen
Compare Nozawa Onsen in August
Warmer or cooler than Nozawa Onsen in August
Similar destinations in East Asia — August
Within 300 km: Hakuba's High trails and huts open around 1 Jul – 15 Oct, and Matsumoto's Kamikochi open season around 17 Apr – 15 Nov.