Itoigawa Weather in September

Itoigawa in September averages 25°C (77°F) during the day and 19°C (66°F) at night. September is part of the rainy season, and falls within the summer season, so frequent rainfall is typical.

Rainfall in Itoigawa in September

As part of the rainy season, Itoigawa sees around 20 days of rain in September, with an average of 270 mm (11 in). Rain during the rainy season is significant rather than just light drizzle. Expect proper showers on most rainy days.

Temperature in Itoigawa in September

In September, expect high temperatures in Itoigawa, with highs of 25°C (77°F) and lows of 19°C (66°F) at night. September is known for being in the summer season. Overall, the month follows a fairly predictable daily temperature pattern. 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 Itoigawa in September

The month experiences a moderate amount of sunlight, with 128 hours of sunshine. This provides a nice balance between sunshine and rain.

If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Itoigawa. Our weather planner can help you explore destinations with more pleasant weather conditions.

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

Itoigawa Temperature in September

Min Temperature 19°C (66°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 66%  

Precipitation 270 mm (11 in)  

Rainy days 20 days  

Sunshine 128 hours  

Percentage Sunshine  

What to Wear in Itoigawa in September

For Itoigawa in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.

What To Do in Itoigawa 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 Itoigawa's climate page.

More climate data for Itoigawa

Temperature Rainfall Sunshine

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