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JapanThe weather in September in Hiroshima
It's warm in September in Hiroshima with an average temperature of 29°C. Temperatures this month range from a low of 27°C to a high of 31°C. At night, you can expect temperatures between 20°C and 25°C.
Looking for sun? September isn’t a good month to be in Hiroshima. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Hiroshima, Japan. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 36°C in 2023, Hiroshima reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 19°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 14°C to a highest value of 28°C.
Rainfall amount
In September, there is an average of 187 mm of precipitation, spread over 20 days. The wind speed is around 4 Bft, mostly coming from the East.
Daily weather in September for Hiroshima
Click on any day in September to get detailed info about the usual weather on that day in Hiroshima. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Hiroshima | New York | |
|---|---|---|
| Average temperature | 29°C | 27°C |
| Max. temperature | 31°C | 31°C |
| Min. temperature | 20°C | -5°C |
| Total precipitation | 187 mm | 57 mm |
| Rainy days | 20 days | 9 days |
Start of September
The month of September starts in Hiroshima with hot temps, averaging around 31°C during the day and nights around 24°C.
Mid September
By mid-September, daytime temps drop to around 29°C, with nights around 23°C. There’s a high chance of precipitation during this time.
End of September
By the end of September, the average daytime temperature in Hiroshima is around 28°C, while nighttime temps are about 21°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 7 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.
The typhoon season in Hiroshima runs from June to November.
Check out the climate of Hiroshima 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.
Temperature charts
These charts show the average temperatures in September in Hiroshima, Japan. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Hiroshima
Temperature in September in Hiroshima over the years
Precipitation charts
These charts show the average amount of precipitation in September in Hiroshima, Japan. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Hiroshima
Total precipitation in September in Hiroshima over the years
Daily UV index in September in Hiroshima
This chart shows the average daily UV index in September in Hiroshima, 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.
Weather experiences in September in Hiroshima
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Average weather in Hiroshima by month
Click on a month below to see detailed weather info for Hiroshima. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.