Joetsu Weather in September

With daytime temperatures of 26°C (79°F) and nighttime lows of 19°C (66°F), September in Joetsu brings high temperatures during the day. Do keep in mind that September is part of the rainy season, with frequent and often heavy rainfall.

Rainfall in Joetsu in September

Joetsu is in the rainy season in September, with rain on around 20 days and an average of 193 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 Joetsu in September

Daytime highs in Joetsu in September reach 26°C (79°F), with nights around 19°C (66°F). September is typically considered a summer month. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. At 19°C (66°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Joetsu in September

With about 128 hours of sunshine, the area enjoys a nice balance of sun and rainy moments, creating a pleasant environment.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May, June and October typically offer the best weather for Joetsu.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• July
• August

• September
• October
• November
• December

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

Joetsu Temperature in September

Min Temperature 19°C (66°F)  

Max Temperature 26°C (79°F)  

Chance of Rain 67%  

Precipitation 193 mm (7.6 in)  

Rainy days 20 days  

Humidity 79%  

Sunshine 128 hours  

Percentage Sunshine  

What to Wear in Joetsu in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Joetsu 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 Joetsu's climate page.

More climate data for Joetsu

Temperature Rainfall Sunshine Humidity

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