September weather forecastYunoshima, Japan
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Yunoshima, Japan, with an average temperature ranging between max 21°C (69.8°F) and min 11.5°C (52.7°F).Temperature
During the shift to September, a minor reduction in average high-temperature is observed, shifting from a moderately hot 25.5°C (77.9°F) in August to a pleasant 21°C (69.8°F). Nighttime temperature in Yunoshima experiences an average drop to a cool 11.5°C (52.7°F) in September.Humidity
In September, the average relative humidity in Yunoshima is 87%.Rainfall
In Yunoshima, during September, the rain falls for 19.6 days and regularly aggregates up to 147mm (5.79") of precipitation. Throughout the year, in Yunoshima, there are 216.5 rainfall days, and 1790mm (70.47") of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
In Yunoshima, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 05:23 and sunset at 18:18. On the last day of September, sunrise is at 05:45 and sunset at 17:36 JST.
Sunshine
In September, the average sunshine in Yunoshima is 7.6h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In September, the maximum UV index of 4 suggests this advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yunoshima, Japan
- Average high temperature in September: 21°C
The warmest month (with the highest average high temperature) is August (25.5°C).
The month with the lowest average high temperature is January (-1.8°C).
- Average low temperature in September: 11.5°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is January (-9.7°C).
Average pressure in September
Yunoshima, Japan
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is November (1019.3mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Yunoshima, Japan
- Average wind speed in September: 5.9km/h
The windiest month (with the highest average wind speed) is March (8.3km/h).
The calmest month (with the lowest average wind speed) is August (5.2km/h).
Average humidity in September
Yunoshima, Japan
- Average humidity in September: 87%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (76%).
Average rainfall in September
Yunoshima, Japan
- Average rainfall in September: 147mm
The wettest month (with the highest rainfall) is July (291mm).
The driest month (with the least rainfall) is November (90mm).
Average rainfall days in September
Yunoshima, Japan
- Average rainfall days in September: 19.6 days
The month with the highest number of rainy days is August (26.7 days).
The month with the least rainy days is January (10.3 days).
Average snowfall in September
Yunoshima, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (675mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Yunoshima, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (24.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Yunoshima, 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: 7h and 36min
The month with the most sunshine is May (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Yunoshima, Japan
- Average sunshine days in September: 8 days
The month with the most sunshine days is May (11.3 days).
The month with the least sunshine days is July (2.9 days).
Average UV index in September
Yunoshima, 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 and December (UV index 1).
Average cloud cover in September
Yunoshima, Japan
- Average cloud cover in September: 56
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 41).
Average visibility in September
Yunoshima, Japan
- Average visibility in September: 6km
The months with the highest visibility are April and May (8km).
The months with the lowest visibility are January, February, July, September and December (6km).
