Nagano Weather in August

Nagano in August averages 29°C (84°F) during the day and 19°C (66°F) at night. August is part of the rainy season, so frequent rainfall is typical.

Rainfall in Nagano in August

As part of the rainy season, Nagano sees around 19 days of rain in August, with an average of 194 mm (7.6 in). Rainy season showers tend to be fairly substantial. A good rain jacket or umbrella is worth having with you most days.

Temperature in Nagano in August

Daytime highs in Nagano in August reach 29°C (84°F), with nights around 19°C (66°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights drop to around 19°C (66°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable. This month tends to be the warmest of the year. Light, comfortable clothing will serve you well.

Sunshine in Nagano in August

Expect a lot of sunshine this month, with about 206 hours of sun. Showers typically arrive in the late afternoon or evening, keeping mornings and early afternoons sunny. Even during the wet season, there's plenty of sunshine for sightseeing.

Should you favor a climate that's both dry and comfortably warm, May typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.