Temperature
Warm by day, mild at night.
83°Ftypical Aug high
Typical range
Nagano
Japan · Asia
Nagano is most comfortable in spring. Summers are warm and winters are cold. Winter also brings ski season, with meaningful snow around November to April. Rain is frequent in most months.
Best time to go
12 mo · Typical year
Temperature range
24°F to 83°F
Rain
16 days/mo
Sunshine
8.6 h/day
Humidity feel
Sometimes humid
When to visit
Month-by-month fit
Precipitation
Rain most days.
61%wet-day frequency
Precip amountWet-day chanceSnowfall
Sunshine
Cloudier spells limit sunshine.
10 hAug sunshine
Heat & humidity by month
Hot afternoons occur, with humid air through much of the month.
83%Aug share of humid air hours
Easy airWarm airHot airHumid airVery humid air
Hourly comfort pattern
In August, afternoons feel about 91° and nights feel near 79°.
FreezingVery coldColdCoolComfortableWarmHotNight shading
More detailIncludes sky, daypart comfort, and wind
Cloud cover
Mostly cloudy skies.
30%Aug clear sky
ClearCloud cover
Typical August day
August late afternoons are around 84°F, easing to about 78°F in early evening.
Avg temp Typical range
Morning82°F
Feels 88°F
Rain33%
Cloud63%
Humid airVery high
Sun intensityModerate
Midday86°F
Feels 92°F
Rain53%
Cloud66%
Humid airVery high
Sun intensityStrong
Late afternoon84°F
Feels 90°F
Rain50%
Cloud69%
Humid airVery high
Sun intensityModerate
Early evening78°F
Feels 85°F
Rain25%
Cloud70%
Humid airVery high
Sun intensityMinimal
Best windowWind pattern
Calm winds are typical in August.
3 mphAug Calm
Typical wind speed (mph)
Similar
Similar things to doNikkoJapanSimilar things to doSalt Lake CityUnited StatesSimilar things to doTakayamaJapanSimilar things to doAshevilleUnited States
Want a side-by-side climate view? Compare Nagano with Nikko.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology