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.

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For a detailed overview over the year and the best time to visit Japan, check out our Zao Onsen's climate page.

Zao Onsen Temperature in September

Min Temperature 16°C (61°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 68%  

Precipitation 153 mm (6 in)  

Rainy days 20 days  

Humidity 79% *  

Sunshine 127 hours *  

Percentage Sunshine 32% *  

* Data from: Sendai, Japan (45 KM, 28 Miles).

What to Wear in Zao Onsen in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. It's going to pour! Pack a good poncho and prepare for very wet conditions. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Zao Onsen in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Camping

6/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Japan, check out our Zao Onsen's climate page.

More climate data for Zao Onsen

Temperature Rainfall Sunshine Humidity

See the full Zao Onsen climate overview or explore weather in Japan.