September weather forecastShirone, Japan
September
Weather in September
The first month of the autumn, September, is still a warm month in Shirone, Japan, with temperature in the range of an average low of 18.2°C (64.8°F) and an average high of 24.9°C (76.8°F).Temperature
The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a moderately hot 29.1°C (84.4°F) to a still warm 24.9°C (76.8°F). During September, Shirone sees a mean low-temperature of 18.2°C (64.8°F).Humidity
In Shirone, the average relative humidity in September is 76%.Rainfall
In Shirone, in September, during 15.9 rainfall days, 72mm (2.83") of precipitation is typically accumulated. Throughout the year, there are 201.1 rainfall days, and 1211mm (47.68") of precipitation is accumulated.Snowfall
In Shirone, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 05:14 and sunset at 18:13. On the last day of the month, sunrise is at 05:38 and sunset at 17:29 JST.
Sunshine
The average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 5 in September transforms into this advice:
Prioritize safety - Recommendations to avert sunburn are shared. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shirone, Japan
- Average high temperature in September: 24.9°C
The warmest month (with the highest average high temperature) is August (29.1°C).
The month with the lowest average high temperature is January (3.9°C).
- Average low temperature in September: 18.2°C
The month with the highest average low temperature is August (22.3°C).
The coldest month (with the lowest average low temperature) is February (0.2°C).
Average pressure in September
Shirone, Japan
- Average pressure in September: 1013.9mbar
The month with the highest atmospheric pressure is November (1019.2mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Shirone, Japan
- Average wind speed in September: 10.1km/h
The windiest month (with the highest average wind speed) is January (18.1km/h).
The calmest month (with the lowest average wind speed) is July (8.5km/h).
Average humidity in September
Shirone, Japan
- Average humidity in September: 76%
The month with the highest relative humidity is July (81%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in September
Shirone, Japan
- Average rainfall in September: 72mm
The wettest month (with the highest rainfall) is December (158mm).
The driest month (with the least rainfall) is May (57mm).
Average rainfall days in September
Shirone, Japan
- Average rainfall days in September: 15.9 days
The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is February (10.9 days).
Average snowfall in September
Shirone, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (453mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Shirone, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Shirone, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 1h and 48min).
Average sunshine days in September
Shirone, Japan
- Average sunshine days in September: 12 days
The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is January (2.6 days).
Average UV index in September
Shirone, 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 and December (UV index 1).
Average cloud cover in September
Shirone, Japan
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Shirone, Japan
- Average visibility in September: 10km
The months with the highest visibility are June, August, September and October (10km).
The months with the lowest visibility are January, February and December (8km).
