Uonuma Weather in September

September in Uonuma typically sees daytime highs of 26°C (79°F) and nighttime lows of 17°C (63°F). September falls within the rainy season, so heavy rainfall is to be expected. It falls within the summer season.

Rainfall in Uonuma in September

As part of the rainy season, Uonuma sees around 20 days of rain in September, with an average of 201 mm (7.9 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in Uonuma in September

September in Uonuma brings typical temperatures with highs around 26°C (79°F) and lows of 17°C (63°F). September marks the summer season. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 17°C (63°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.

Sunshine in Uonuma in September

The month experiences a moderate amount of sunlight, with 135 hours of sunshine. This provides a nice balance between sunshine and rain.

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 Uonuma's climate page.

Uonuma Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 68%  

Precipitation 201 mm (7.9 in)  

Rainy days 20 days  

Sunshine 135 hours *  

Percentage Sunshine *  

* Data from: Nagaoka, Japan (25 KM, 16 Miles).

What to Wear in Uonuma in September

Warm but pleasant conditions in Uonuma 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. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Uonuma 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 Uonuma's climate page.

More climate data for Uonuma

Temperature Rainfall Sunshine

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