September weather forecastUonuma, Japan
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Uonuma, Japan, with an average temperature fluctuating between 24.1°C (75.4°F) and 15.9°C (60.6°F).Temperature
With the onset of September, Uonuma's climate undergoes a slight change as the average high-temperature moves from 28.6°C (83.5°F) in August to a still moderately hot 24.1°C (75.4°F). Uonuma sees an average low-temperature of 15.9°C (60.6°F) during September.Humidity
In September, the average relative humidity is 81%.Rainfall
In September, the rain falls for 15.1 days. Throughout September, 73mm (2.87") of precipitation is accumulated. Throughout the year, in Uonuma, there are 192.2 rainfall days, and 1224mm (48.19") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Uonuma, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 05:15 and sunset at 18:13. On the last day of the month, sunrise is at 05:38 and sunset at 17:29 JST.
Sunshine
In September, the average sunshine is 8.3h.UV index
In Uonuma, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Guard yourself - Avoiding sunburn is suggested. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Uonuma, Japan
- Average high temperature in September: 24.1°C
The warmest month (with the highest average high temperature) is August (28.6°C).
The month with the lowest average high temperature is January (1.9°C).
- Average low temperature in September: 15.9°C
The month with the highest average low temperature is August (20.1°C).
The coldest month (with the lowest average low temperature) is January (-3°C).
Average pressure in September
Uonuma, Japan
- Average pressure in September: 1013.9mbar
The month with the highest atmospheric pressure is November (1019.1mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Uonuma, Japan
- Average wind speed in September: 7.3km/h
The windiest months (with the highest average wind speed) are January and December (12.6km/h).
The calmest month (with the lowest average wind speed) is July (6.3km/h).
Average humidity in September
Uonuma, Japan
- Average humidity in September: 81%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Uonuma, Japan
- Average rainfall in September: 73mm
The wettest month (with the highest rainfall) is January (187mm).
The driest month (with the least rainfall) is May (50mm).
Average rainfall days in September
Uonuma, Japan
- Average rainfall days in September: 15.1 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is May (12.6 days).
Average snowfall in September
Uonuma, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (971mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Uonuma, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23 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
Uonuma, 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 42min).
- Average sunshine in September: 8h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Uonuma, Japan
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is May (17.3 days).
The month with the least sunshine days is January (1.8 days).
Average UV index in September
Uonuma, Japan
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Uonuma, Japan
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Uonuma, Japan
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September, October and November (9km).
The month with the lowest visibility is January (7km).
