August · Japan
Best time to visit Nagano in August Weather, crowds & prices
Weather in Nagano in August
Average temperature 26°C, 112 mm of rain, about 28 days with 6+ hours of sunshine and 77% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
6.4/10
Ranked #10 of 12 months
- Avg temp
- 26°C
- Rainfall
- 112 mm
- Humidity
- 77%
- Days with 6h+ sun
- 28
- Crowd Density
- Moderate Crowds
- Average Expenses
- $ · Budget Friendly ($)
August in Nagano scores 6.4/10 for nature and wildlife travel - ranked #10 of 12. Expect around 26°C, 112 mm of rain, and roughly 28 days with 6+ hours of sunshine this month.
Nagano's Olympic legacy, mountain temples and ski fields fill the Japanese Alps' gateway.
August in Nagano — workable with trade-offs
August averages 26°C (79°F) and humidity near 77%, so the practical pattern is early mornings, a long midday break, and evenings back outside.
Monthly rainfall reaches 112 mm — wet for this destination — but about 28 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.
It scores 6.4/10 here, 10th of 12 months, against 8.7/10 in the destination's best month.
Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella, footwear you can get muddy.
Figure on low-season pricing, with crowds are moderate.
Flexible dates? April scores 2.3 points higher here — enough to change the trip.
Frequently asked
- What is the weather like in Nagano in August?
- In August, Nagano averages 26°C, 112 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 6.4/10.
- Is August a good time to visit Nagano?
- August earns a 6.4/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Nagano in August?
- Expect about 112 mm of rain in August. Average humidity is 77% and there are about 28 days with 6+ hours of sunshine.
Curated in Nagano
Tickets & experiences
Things to do in Nagano
Nagano, Japan. Live activities and tours from GetYourGuide, matched to this destination.