September weather forecastYumenoshima, Japan
September
Weather in September
September, the first month of the autumn in Yumenoshima, is also a moderately hot month, with temperature in the range of an average high of 26.7°C (80.1°F) and an average low of 21.3°C (70.3°F).Temperature
With the onset of September, Yumenoshima's climate undergoes a slight change as the average high-temperature moves from a tropical 30.6°C (87.1°F) in August to a moderately hot 26.7°C (80.1°F). Nighttime temperatures in Yumenoshima consistently average a pleasant 21.3°C (70.3°F) during September.Humidity
In September, the average relative humidity in Yumenoshima is 75%.Rainfall
The wettest months in Yumenoshima are September and October, with an average 48mm (1.89") of rainfall.Snowfall
In Yumenoshima, Japan, snow does not fall in March through December.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 05:12 and sunset at 18:08. On the last day of September, sunrise is at 05:34 and sunset at 17:26 JST.
Sunshine
In Yumenoshima, Japan, the average sunshine in September is 7.9h.UV index
The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.Note: The UV index of 6 during September leads to these advisories:
Avert overexposure. Light-skinned people might experience burning in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yumenoshima, Japan
- Average high temperature in September: 26.7°C
The warmest month (with the highest average high temperature) is August (30.6°C).
The month with the lowest average high temperature is January (8.8°C).
- Average low temperature in September: 21.3°C
The month with the highest average low temperature is August (24.9°C).
The coldest month (with the lowest average low temperature) is January (3°C).
Average pressure in September
Yumenoshima, Japan
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Yumenoshima, Japan
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is April (15.6km/h).
The calmest month (with the lowest average wind speed) is November (12.3km/h).
Average humidity in September
Yumenoshima, Japan
- Average humidity in September: 75%
The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (60%).
Average rainfall in September
Yumenoshima, Japan
- Average rainfall in September: 48mm
The wettest months (with the highest rainfall) are September and October (48mm).
The driest month (with the least rainfall) is February (10mm).
Average rainfall days in September
Yumenoshima, Japan
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Yumenoshima, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (4mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Yumenoshima, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Yumenoshima, 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 54min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in September
Yumenoshima, Japan
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is January (25.4 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in September
Yumenoshima, Japan
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Yumenoshima, Japan
- Average cloud cover in September: 39
The months with the most cloud cover are June and October (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 28).
Average visibility in September
Yumenoshima, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
