Aso Weather in September

September in Aso brings high temperatures around 28°C (82°F) during the day, dropping to 18°C (64°F) at night, and as part of the rainy season, heavy rainfall is common.

Rainfall in Aso in September

Aso is in the rainy season in September, with rain on around 18 days and an average of 192 mm (7.6 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in Aso in September

September in Aso brings high temperatures, with highs of 28°C (82°F) and nights around 18°C (64°F). September is typically considered a summer month. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 18°C (64°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Aso in September

The month experiences a moderate amount of sunlight, with 177 hours of sunshine. This provides a nice balance between sunshine and rain.

If you prefer dry days with pleasant temperatures, May and October typically offer 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 Aso's climate page.

Aso Temperature in September

Min Temperature 18°C (64°F)  

Max Temperature 28°C (82°F)  

Chance of Rain 59%  

Precipitation 192 mm (7.6 in)  

Rainy days 18 days  

Humidity 71% *  

Sunshine 177 hours *  

Percentage Sunshine *  

* Data from: Kumamoto, Japan (39 KM, 24 Miles).

What to Wear in Aso in September

Warm but pleasant conditions in Aso in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Aso in September

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

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

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 Aso's climate page.

More climate data for Aso

Temperature Rainfall Sunshine Humidity

See the full Aso climate overview or explore weather in Japan.