SeasonMapNagano weather in June
Japan
June in Nagano: warm, soaked, with muggy air — fine if you can take 20 rainy days.
#2 of 12 months in Nagano · #775 of 1383 destinations to visit in June · comfort 80/100 (tier A)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Nagano in June
No notes yet. Open Nagano on the map to add the first one.
Nagano climate normals — June
| Daytime high | 24°C / 76°F | 🌤 warm |
|---|---|---|
| Nighttime low | 15°C / 60°F | |
| Rainfall | 218 mm / 8.6 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 16°C / 61°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 14.6 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 54 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Nagano in June
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.
Busyschool holidays in 3 of the markets that fill it, one of its best months for weather(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Nagano'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).
Best weatherNagano's best weather comes in May, June and September — separate windows, not one continuous season.
Best weatherFair weatherToughest weather
What's on in Nagano in June
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Wet season
MonsoonRisk20 rainy days and about 218 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 Nagano — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Nagano?
Nagano in June — FAQ
- Is June a good time to visit Nagano?
- June in Nagano: warm, soaked, with muggy air — fine if you can take 20 rainy days. It ranks #2 of 12 months for Nagano on SeasonMap's comfort score (80/100).
- What is the weather like in Nagano in June?
- In June, Nagano averages a daily high of 24.2°C and a low of 15.4°C, with about 217.9 mm of rain over roughly 20 rainy days.
- What is the air quality in Nagano in June?
- Nagano has a mean US Air Quality Index of about 54 in June.
Other months in Nagano
Compare Nagano in June
Warmer or cooler than Nagano in June
Similar destinations in East Asia — June
Within 300 km: Matsumoto's Kamikochi open season around 17 Apr – 15 Nov, and Kanazawa's Hyakumangoku Matsuri around 1–8 Jun.