JapanAverage weather for Yamaguchi in September
It's warm in September in Yamaguchi with an average temperature of 29°C. Temperatures this month range from a low of 26°C to a high of 31°C. At night, you can expect temperatures between 19°C and 24°C.
Start of September
The month of September starts in Yamaguchi with hot temps, averaging around 30°C during the day and nights around 23°C. There are plenty of days with a good chance of precipitation.
Mid September
By mid-September, daytime temps drop to around 29°C, with nights around 22°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Yamaguchi is around 28°C, while nighttime temps are about 20°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Because temperatures drop in the evening, wearing layers is recommended.
In September, there is an average of 227 mm of precipitation, spread over 10 days. The wind speed is around 3 Bft, mostly coming from the East.
Yamaguchi in September |
New York | ||
|---|---|---|---|
 Average temperature |
29°C | 27°C | |
 Max. temperature |
31°C | 31°C | |
| Min. temperature |
26°C | -5°C | |
 Total precipitation |
227 mm | 57 mm | |
| Rainy days |
10 days | 9 days | |
August
UV index
The UV index is a maximum of 6 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Yamaguchi?
Looking for sun? September isn’t a good month to be in Yamaguchi. The temperature is nice, but there’s too much chance of rain.
The typhoon season in Yamaguchi runs from June to November.
Temperature records
With 36°C in 2023, Yamaguchi reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 18°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 13°C to a highest value of 28°C.
Check out the climate of Yamaguchi for all months and discover the best travel time
Curious about the weather in other parts of Japan? Check out the climate and weather for spots like Tokyo, Kyōto, Osaka, or explore other destinations in Japan.
Daily Temperature in September in Yamaguchi
This chart shows the average daily high and low temperatures in September for Yamaguchi, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.
Daily Precipitation in September in Yamaguchi
The chart below shows the average daily precipitation in September for Yamaguchi, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 10 days of precipitation in Yamaguchi.
Daily UV index in September in Yamaguchi
This chart shows the average daily UV index in September in Yamaguchi, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Yamaguchi over the years
This chart shows the average temperature in September in Yamaguchi, measured in degrees Celsius, over the past few years.
Total precipitation in September in Yamaguchi over the years
This chart shows the average precipitation in September in Yamaguchi, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.
Daily weather in September for Yamaguchi
Click on any day in September to get detailed info about the usual weather on that day in Yamaguchi. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Yamaguchi
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Average weather in Yamaguchi by month
Click on a month below to see detailed weather info for Yamaguchi. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Yamaguchi for all months at once
