Zao Onsen Weather in September

With daytime temperatures of 25°C (77°F) and nighttime lows of 16°C (61°F), September in Zao Onsen brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 153 mm (6 in) falls on average.

Rainfall in Zao Onsen in September

You can expect rain on roughly 20 days based on historical data, averaging 153 mm (6 in) for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.

Temperature in Zao Onsen in September

Temperatures in Zao Onsen in September top out at 25°C (77°F) and drop to 16°C (61°F) overnight. September is part of summer. Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 16°C (61°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Zao Onsen in September

The city usually sees around 127 hours of sunlight, indicating a moderately sunny period.

If you prefer enjoying temperate temperatures and rain-free days, May typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.