Best Time to Visit Nagano
Best time: May, Aug, Apr, Jun.
Aug is warmest (30.4°C high); Jul is rainiest (148 mm).
Nagano weather by month
| Month | High °C | Low °C | Rain mm | Sun hrs |
|---|---|---|---|---|
| Jan | 4.4 | -4.7 | 76 | 3.4 |
| Feb | 5.1 | -4.4 | 67 | 4.5 |
| Mar | 9.4 | -1.5 | 74 | 6 |
| Apr | 17.1 | 4.7 | 70 | 7.5 |
| May | 22.3 | 10 | 83 | 8.3 |
| Jun | 25.3 | 15.4 | 135 | 7.5 |
| Jul | 28.9 | 19.6 | 148 | 7.6 |
| Aug | 30.4 | 20.6 | 103 | 7.9 |
| Sep | 25 | 16.2 | 145 | 5.8 |
| Oct | 18.9 | 9.1 | 98 | 4.8 |
| Nov | 13.1 | 2.7 | 67 | 3.6 |
| Dec | 7.4 | -2.3 | 63 | 3.1 |
Average high temperature
Best months by activity
Overall: MayAugAprJun
Beaches: AugJul
Hiking: AprMayNov
Sightseeing: MayAprOctAug
Nagano quick facts
What to pack
Cold months (Jan, Feb, Mar, Nov, Dec): warm layers and a coat.
Wet months (Jun, Jul, Aug, Sep, Oct): raincoat and umbrella.
Frequently asked questions
When is the best time to visit Nagano?
May, Aug, Apr, Jun.
What is the rainiest month?
Jul, about 148 mm.
What is the warmest month?
Aug, with average highs of 30.4°C.
Where to stay
See Nagano hotels · Book Nagano tours & activities
All destinations · Best time to visit Tokyo · Best time to visit Kyoto · Best time to visit Fuji · Best time to visit Atsugi
Climate data: Open-Meteo Historical (ERA5), 1991–2020 climate normals.
Licensed under CC BY 4.0.
Open-Meteo.