September weather forecastImabukucho, Japan
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Imabukucho, Japan, with temperature in the range of an average high of 26.4°C (79.5°F) and an average low of 21.8°C (71.2°F).Temperature
The onset of September is marked by a minor decrease in temperature, transitioning from 29.6°C (85.3°F) in August to a still moderately hot 26.4°C (79.5°F). Imabukucho maintains an average low-temperature of 21.8°C (71.2°F) throughout September's nights.Humidity
In September, the average relative humidity in Imabukucho, Japan, is 79%.Rainfall
In September, in Imabukucho, the rain falls for 14.3 days. Throughout September, 67mm (2.64") of precipitation is accumulated. In Imabukucho, Japan, during the entire year, the rain falls for 169 days and collects up to 900mm (35.43") of precipitation.Snowfall
March through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 23min.On the first day of September, sunrise is at 05:55 and sunset at 18:46. On the last day of the month, sunrise is at 06:14 and sunset at 18:07 JST.
Sunshine
In September, the average sunshine is 8.2h.UV index
In September, the average daily maximum UV index in Imabukucho, Japan, is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 6 during September translates into the following directions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Imabukucho, Japan
- Average high temperature in September: 26.4°C
The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in September: 21.8°C
The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (5.4°C).
Average pressure in September
Imabukucho, Japan
- Average pressure in September: 1011.9mbar
The month with the highest atmospheric pressure is January (1022.2mbar).
The month with the lowest atmospheric pressure is June (1008mbar).
Average wind speed in September
Imabukucho, Japan
- Average wind speed in September: 13.6km/h
The windiest months (with the highest average wind speed) are January and December (16.7km/h).
The calmest month (with the lowest average wind speed) is June (10.6km/h).
Average humidity in September
Imabukucho, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Imabukucho, Japan
- Average rainfall in September: 67mm
The wettest month (with the highest rainfall) is July (192mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in September
Imabukucho, Japan
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is May (9.5 days).
Average snowfall in September
Imabukucho, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Imabukucho, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.6 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
Imabukucho, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 4h and 30min).
Average sunshine days in September
Imabukucho, Japan
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is May (20.2 days).
The months with the least sunshine days are July and December (9.5 days).
Average UV index in September
Imabukucho, 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 December (UV index 2).
Average cloud cover in September
Imabukucho, Japan
- Average cloud cover in September: 38
The months with the most cloud cover are January and December (Cloud cover 51).
The month with the least cloud cover is October (Cloud cover 33).
Average visibility in September
Imabukucho, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, September, October, November and December (10km).
The months with the lowest visibility are May, June, July and August (9km).
