September weather forecastUsuki, Japan
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Usuki, Japan, with an average temperature fluctuating between 21°C (69.8°F) and 25.6°C (78.1°F).Temperature
September indicates a minor shift in the average high-temperature, from August's warm 29.3°C (84.7°F) to a still moderately hot 25.6°C (78.1°F). Usuki observes a consistent average low-temperature of 21°C (69.8°F) throughout September nights.Humidity
In September, the average relative humidity is 80%.Rainfall
In September, in Usuki, Japan, the rain falls for 14.2 days. Throughout September, 68mm (2.68") of precipitation is accumulated. In Usuki, during the entire year, the rain falls for 156.2 days and collects up to 681mm (26.81") of precipitation.Snowfall
March through November are months without snowfall in Usuki.Daylight
In September, the average length of the day in Usuki is 12h and 23min.On the first day of September, sunrise is at 05:47 and sunset at 18:38. On the last day of the month, sunrise is at 06:06 and sunset at 17:59 JST.
Sunshine
The average sunshine in September is 8.9h.UV index
In Usuki, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 5 during September translates into the following directions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Usuki, Japan
- Average high temperature in September: 25.6°C
The warmest month (with the highest average high temperature) is August (29.3°C).
The month with the lowest average high temperature is January (9.3°C).
- Average low temperature in September: 21°C
The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (4.6°C).
Average pressure in September
Usuki, Japan
- Average pressure in September: 1012.1mbar
The month with the highest atmospheric pressure is January (1021.4mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).
Average wind speed in September
Usuki, Japan
- Average wind speed in September: 10.8km/h
The windiest month (with the highest average wind speed) is January (16km/h).
The calmest month (with the lowest average wind speed) is June (9km/h).
Average humidity in September
Usuki, Japan
- Average humidity in September: 80%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is March (71%).
Average rainfall in September
Usuki, Japan
- Average rainfall in September: 68mm
The wettest month (with the highest rainfall) is July (113mm).
The driest month (with the least rainfall) is January (24mm).
Average rainfall days in September
Usuki, Japan
- Average rainfall days in September: 14.2 days
The month with the highest number of rainy days is July (21.3 days).
The months with the least rainy days are October and November (9.8 days).
Average snowfall in September
Usuki, 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
Usuki, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.2 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
Usuki, 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 54min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in September
Usuki, Japan
- Average sunshine days in September: 13.3 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is July (8.3 days).
Average UV index in September
Usuki, Japan
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Usuki, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is June (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Usuki, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, August, September, October, November and December (10km).
The months with the lowest visibility are May, June and July (9km).
