Kai Weather in September

Kai in September averages 24°C (75°F) during the day and 15°C (59°F) at night. This is the wettest month of the year, and part of the summer season.

Rainfall in Kai in September

With the year's heaviest rain occurring this month, it's best to be equipped with a poncho to handle the frequent downpours. Typically, about 19 days will experience rainfall, with an average of 232 mm (9.1 in) for the month. This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Kai in September

In September, Kai gets high temperatures, with highs of 24°C (75°F). Nights cool to around 15°C (59°F). The summer season is characteristic of September. Overall, the month follows a fairly predictable daily temperature pattern. Nights cool down to 15°C (59°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Kai in September

You can expect a moderate amount of sunlight, with approximately 142 hours. This means a pleasant mix of sun and overcast.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May and August typically offer the best weather for Kai.

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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 Kai's climate page.

Kai Temperature in September

Min Temperature 15°C (59°F)  

Max Temperature 24°C (75°F)  

Chance of Rain 62%  

Precipitation 232 mm (9.1 in)  

Rainy days 19 days  

Humidity 72% *  

Sunshine 142 hours *  

Percentage Sunshine *  

* Data from: Kofu, Japan (6 KM, 4 Miles).

What to Wear in Kai in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. 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 Kai 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 Kai's climate page.

More climate data for Kai

Temperature Rainfall Sunshine Humidity

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