September weather forecastAihara, Japan
September
Weather in September
The first month of the autumn, September, is still a warm month in Aihara, Japan, with an average temperature ranging between max 25.5°C (77.9°F) and min 19.1°C (66.4°F).Temperature
As September begins, there is a minor decrease in the average high-temperature, softly falling from a warm 29.9°C (85.8°F) in August to a still moderately hot 25.5°C (77.9°F). During the month of September, Aihara anticipates a mean low-temperature of 19.1°C (66.4°F).Humidity
The average relative humidity in September is 77%.Rainfall
In Aihara, in September, during 18.3 rainfall days, 121mm (4.76") of precipitation is typically accumulated. Throughout the year, in Aihara, there are 187.4 rainfall days, and 1055mm (41.54") of precipitation is accumulated.Snowfall
In Aihara, snow does not fall in April through October.Daylight
In September, the average length of the day in Aihara, Japan, is 12h and 25min.On the first day of September, sunrise is at 05:14 and sunset at 18:10. On the last day of the month, sunrise is at 05:36 and sunset at 17:28 JST.
Sunshine
The average sunshine in September is 8h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Aihara, Japan
- Average high temperature in September: 25.5°C
The warmest month (with the highest average high temperature) is August (29.9°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in September: 19.1°C
The month with the highest average low temperature is August (23.1°C).
The coldest month (with the lowest average low temperature) is January (0.2°C).
Average pressure in September
Aihara, Japan
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Aihara, Japan
- Average wind speed in September: 9.2km/h
The windiest month (with the highest average wind speed) is April (11.2km/h).
The calmest month (with the lowest average wind speed) is November (8.7km/h).
Average humidity in September
Aihara, Japan
- Average humidity in September: 77%
The months with the highest relative humidity are June and July (79%).
The month with the lowest relative humidity is January (63%).
Average rainfall in September
Aihara, Japan
- Average rainfall in September: 121mm
The wettest month (with the highest rainfall) is October (154mm).
The driest month (with the least rainfall) is February (40mm).
Average rainfall days in September
Aihara, Japan
- Average rainfall days in September: 18.3 days
The month with the highest number of rainy days is July (22.5 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in September
Aihara, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (69mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Aihara, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Aihara, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).
Average sunshine days in September
Aihara, Japan
- Average sunshine days in September: 8.1 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is July (3.8 days).
Average UV index in September
Aihara, Japan
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Aihara, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is June (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 26).
Average visibility in September
Aihara, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, November and December (10km).
The months with the lowest visibility are March, April, May, June, July, August, September and October (9km).
