Joetsu weather in September (Niigata Prefecture, Japan)

Looking to travel to Joetsu in September? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In September, Joetsu typically experiences high temperatures and heavy rainfall. September falls within the summer season. Throughout the daytime, temperatures often hover around 26°C. However, as the sun sets and evening approaches, there's a noticeable cool-down, with temperatures gently dropping to a more temperate 19°C.

Joetsu in September falls under the rainy season with heavy rainfall, averaging around 193 mm for the month. Rain is expected on roughly 20 days.

The area enjoys a balanced 128 hours of sunlight. Ensuring it's neither too overcast nor too sunny.

If you prefer dry days with pleasant temperatures, May, June and October typically offer the best circumstances. While January, February, March and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Joetsu climate page with graphs.

 

Joetsu, monthly averages in September

Min Temperature 19°C  

Max Temperature 26°C  

Chance of Rain 67%  

Precipitation 193 mm  

Rainy days 20 days  

Humidity 79%  

Sunshine 128 hours  

Percentage Sunshine  

Where to go in Japan in September

Find out more about the weather in Japan in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Joetsu in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

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

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Joetsu.

Our site offers climate and forecast data for every country in the world. Are you going to Japan? On this website you can find historical weather averages for many cities in Japan. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.