Temperatures in September
It's warm in September in Izu Ōshima with an average temperature of 27°C. Temperatures this month range from a low of 25°C to a high of 29°C. At night, you can expect temperatures between 19°C and 24°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Izu Ōshima in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Izu Ōshima with hot temperatures, averaging around 29°C during the day and nights close to 24°C. Plenty of days with a chance of precipitation.
Mid-September
By mid-September, the average daytime temperature drops to around 27°C, with nights close to 23°C. The chance of precipitation is high during this period.
End of September
By the end of September, the average daytime temperature in Izu Ōshima will be around 26°C, with nights close to 21°C. There’s a significant chance of many days with precipitation.
As it gets cooler in the evening, it’s best to wear layers.
Precipitation in September
In September, there is an average of 341 mm of precipitation, spread over 14 days. The wind speed is around 4 Bft, mostly coming from the East.
The average precipitation chance is 45% per day this month. Though it seems average, the weather’s variable. Some days have higher, others lower precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Izu Ōshima. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Izu Ōshima in September |
UK | ||
|---|---|---|---|
 Average Temperature |
27°C | 20°C | |
 High Temp |
29°C | 22°C | |
| Low Temp |
25°C | 17°C | |
 Total Precipitation |
341 mm | 44 mm | |
| Rainy Days |
14 days | 8 days | |
August
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is September a good time to visit Izu Ōshima?
After some sun? Then September isn’t the best time to be in Izu Ōshima. The temperature is pleasant, but there’s too much chance of rain this month.
The typhoon season in Izu Ōshima runs from June to November.
Temperature records for Izu Ōshima in September
With 32°C, Izu Ōshima hit the highest temperature in the last 10 years in September 2023. The lowest daytime temperature in this month was 18°C in 2018. The extreme night temperatures ranged from a low of 12°C to a high of 28°C.
Check out the climate of Izu Ōshima for all months and discover the best travel time
Daily Temperature in September in Izu Ōshima
This chart shows the average daily temperatures, both day and night, for each day in September in Izu Ōshima, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Izu Ōshima
The chart below shows the average daily precipitation in September for Izu Ōshima, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown 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 rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 14 days of rain in Izu Ōshima.
Daily UV Index in September in Izu Ōshima
This chart shows the average daily UV index in September in Izu Ōshima, 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 Izu Ōshima Over the Years
This chart shows the average temperature in September in Izu Ōshima, measured in degrees Celsius, over the past years.
Total Precipitation in September in Izu Ōshima Over the Years
This chart shows the average precipitation in September in Izu Ōshima, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Izu Ōshima
Click on a specific day in September for detailed info on the typical weather on that day in Izu Ōshima. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Izu Ōshima
Have you been to Izu Ōshima in September?
Share your weather experience in September in Izu Ōshima.
Average Weather in Izu Ōshima by Month
Click on a month below to see detailed weather info for Izu Ōshima. 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 Izu Ōshima for all months at once
