September weather forecastYuni, Japan
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Yuni, Japan, with an average temperature varying between 11.4°C (52.5°F) and 20.3°C (68.5°F).Temperature
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a warm 24.1°C (75.4°F) in August to a pleasant 20.3°C (68.5°F). Throughout September, Yuni witnesses a nighttime temperature average of 11.4°C (52.5°F).Humidity
The average relative humidity in September in Yuni is 85%.Rainfall
In September, the rain falls for 16.5 days. Throughout September, 79mm (3.11") of precipitation is accumulated. In Yuni, during the entire year, the rain falls for 152.1 days and collects up to 805mm (31.69") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Yuni is 12h and 31min.On the first day of September in Yuni, Japan, sunrise is at 04:57 and sunset at 18:08. On the last day of the month, sunrise is at 05:29 and sunset at 17:16 JST.
Sunshine
In Yuni, the average sunshine in September is 7.1h.UV index
In Yuni, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: In September, the UV index of 4 transforms into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yuni, Japan
- Average high temperature in September: 20.3°C
The warmest month (with the highest average high temperature) is August (24.1°C).
The month with the lowest average high temperature is January (-4°C).
- Average low temperature in September: 11.4°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is February (-12.8°C).
Average pressure in September
Yuni, Japan
- Average pressure in September: 1013.7mbar
The months with the highest atmospheric pressure are October and November (1016mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in September
Yuni, Japan
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is April (11.8km/h).
The calmest month (with the lowest average wind speed) is August (8.4km/h).
Average humidity in September
Yuni, Japan
- Average humidity in September: 85%
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is May (78%).
Average rainfall in September
Yuni, Japan
- Average rainfall in September: 79mm
The wettest month (with the highest rainfall) is August (119mm).
The driest months (with the least rainfall) are January and February (50mm).
Average rainfall days in September
Yuni, Japan
- Average rainfall days in September: 16.5 days
The month with the highest number of rainy days is July (19.8 days).
The months with the least rainy days are January and February (4.3 days).
Average snowfall in September
Yuni, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is December (442mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Yuni, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (26.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Yuni, Japan
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 7h and 6min
The month with the most sunshine is May (Average sunshine: 7h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in September
Yuni, Japan
- Average sunshine days in September: 10.9 days
The month with the most sunshine days is May (14.4 days).
The month with the least sunshine days is January (4.3 days).
Average UV index in September
Yuni, Japan
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Yuni, Japan
- Average cloud cover in September: 49
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is October (Cloud cover 47).
Average visibility in September
Yuni, Japan
- Average visibility in September: 7km
The months with the highest visibility are April, May, October and November (8km).
The month with the lowest visibility is January (5km).
