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Normal weather for Iriomote in September

It's hot in September in Iriomote with an average temperature of 31°C. Temperatures this month range from a low of 30°C to a high of 32°C. At night, you can expect temperatures between 26°C and 27°C.

In September, there is an average of 295 mm of precipitation, spread over 22 days. The wind speed is around 4 Bft, mostly coming from the Southeast.

Iriomote in September

UK
Temperature Average Temperature
31°C 20°C
Sun High Temp
32°C 22°C
Sun Low Temp
30°C 17°C
Rain Total Precipitation
295 mm 44 mm
Rain Rainy Days
22 days 8 days

Start of September

The month of September starts in Iriomote with hot temperatures, averaging around 32°C during the day and nights close to 27°C. Plenty of days with a chance of precipitation. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.

Mid-September

By mid-September, the average daytime temperature drops to around 31°C, with nights close to 27°C. The chance of precipitation is high during this period. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.

End of September

By the end of September, the average daytime temperature in Iriomote will be around 31°C, with nights close to 27°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal.

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 Iriomote?

After some sun? Then September isn’t the best time to be in Iriomote. The temperature is pleasant, but there’s too much chance of rain this month.

The typhoon season in Iriomote runs from June to November.

Temperature records for Iriomote in September

With 34°C, Iriomote hit the highest temperature in the last 10 years in September 2016. The lowest daytime temperature in this month was 25°C in 2020. The extreme night temperatures ranged from a low of 23°C to a high of 29°C.

Check out the climate of Iriomote for all months and discover the best travel time

Daily Temperature in September in Iriomote

This chart shows the average daily temperatures, both day and night, for each day in September in Iriomote, 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 Temperature in September in Iriomote

Daily Precipitation in September in Iriomote

The chart below shows the average daily precipitation in September for Iriomote, 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 22 days of rain in Iriomote.

Daily Precipitation in September in Iriomote

Daily UV Index in September in Iriomote

This chart shows the average daily UV index in September in Iriomote, 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.

Daily UV Index in September in Iriomote

Temperature in September in Iriomote Over the Years

This chart shows the average temperature in September in Iriomote, measured in degrees Celsius, over the past years.

Temperature in September in Iriomote Over the Years

Total Precipitation in September in Iriomote Over the Years

This chart shows the average precipitation in September in Iriomote, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.

Precipitation in September in Iriomote Over the Years

Daily climate in September for Iriomote

Click on a specific day in September for detailed info on the typical weather on that day in Iriomote. Check out the historical temperatures and precipitation over the past 10 years on this day.

Weather experiences in September in Iriomote

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Average Weather in Iriomote by Month

Click on a month below to see detailed weather info for Iriomote. 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 Iriomote for all months at once

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