September weather forecastIetoshi, Japan
September
Weather in September
The first month of the autumn, September, is still a warm month in Ietoshi, Japan, with an average temperature varying between 20.2°C (68.4°F) and 26.6°C (79.9°F).Temperature
The onset of September brings a small shift in high-temperatures, falling from 29.6°C (85.3°F) in August to a still moderately hot 26.6°C (79.9°F). Ietoshi encounters an average low-temperature of 20.2°C (68.4°F) during September nights.Humidity
In Ietoshi, the average relative humidity in September is 78%.Rainfall
In Ietoshi, in September, it is raining for 12.5 days, with typically 76mm (2.99") of accumulated precipitation. In Ietoshi, Japan, during the entire year, the rain falls for 142.1 days and collects up to 860mm (33.86") of precipitation.Snowfall
In Ietoshi, snow does not fall in March through November.Daylight
In September, the average length of the day in Ietoshi is 12h and 23min.On the first day of September, sunrise is at 05:40 and sunset at 18:32. On the last day of the month, sunrise is at 06:00 and sunset at 17:52 JST.
Sunshine
In September, the average sunshine in Ietoshi, Japan, is 9.5h.UV index
In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 5 during September translates into the following guidance:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ietoshi, Japan
- Average high temperature in September: 26.6°C
The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in September: 20.2°C
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (2.5°C).
Average pressure in September
Ietoshi, Japan
- Average pressure in September: 1012.2mbar
The month with the highest atmospheric pressure is January (1020.5mbar).
The month with the lowest atmospheric pressure is June (1008.5mbar).
Average wind speed in September
Ietoshi, Japan
- Average wind speed in September: 7.4km/h
The windiest month (with the highest average wind speed) is December (9km/h).
The calmest month (with the lowest average wind speed) is June (6.5km/h).
Average humidity in September
Ietoshi, Japan
- Average humidity in September: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is January (70%).
Average rainfall in September
Ietoshi, Japan
- Average rainfall in September: 76mm
The wettest month (with the highest rainfall) is July (153mm).
The driest month (with the least rainfall) is January (26mm).
Average rainfall days in September
Ietoshi, Japan
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (18.2 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in September
Ietoshi, Japan
- Average snowfall in September: 0mm
The months with the highest snowfall are January and December (2mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Ietoshi, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.8 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Ietoshi, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 9h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is October (Average sunshine: 6h and 6min).
Average sunshine days in September
Ietoshi, Japan
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in September
Ietoshi, Japan
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in September
Ietoshi, Japan
- Average cloud cover in September: 35
The month with the most cloud cover is June (Cloud cover 46).
The months with the least cloud cover are January, November and December (Cloud cover 28).
Average visibility in September
Ietoshi, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, October, November and December (10km).
The month with the lowest visibility is July (8km).
