September weather forecastOnojo, Japan
September
Weather in September
The first month of the autumn, September, is still a warm month in Onojo, Japan, with an average temperature varying between 26.6°C (79.9°F) and 19.6°C (67.3°F).Temperature
The transition into September subtly indicates a reduction in the average high-temperature, down to a warm 26.6°C (79.9°F) from August's hot 31.1°C (88°F). Throughout September, a steady low-temperature average of 19.6°C (67.3°F) is noted.Humidity
In Onojo, the average relative humidity in September is 80%.Rainfall
In Onojo, in September, during 16.3 rainfall days, 89mm (3.5") of precipitation is typically accumulated. In Onojo, during the entire year, the rain falls for 183.3 days and collects up to 1145mm (45.08") of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Onojo, the average length of the day in September is 12h and 23min.On the first day of the month, sunrise is at 05:52 and sunset at 18:43. On the last day of September, sunrise is at 06:11 and sunset at 18:04 JST.
Sunshine
In September, the average sunshine is 7.6h.UV index
In Onojo, Japan, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 5 during September translates into the following guidance:
Act with care - Obligation to protect against skin and eye damage is highlighted. To guard against the harmful effects of the Sun, minimize exposure during 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
Onojo, Japan
- Average high temperature in September: 26.6°C
The warmest month (with the highest average high temperature) is August (31.1°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in September: 19.6°C
The month with the highest average low temperature is August (23.5°C).
The coldest month (with the lowest average low temperature) is January (2.5°C).
Average pressure in September
Onojo, Japan
- Average pressure in September: 1012.2mbar
The month with the highest atmospheric pressure is January (1022mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).
Average wind speed in September
Onojo, Japan
- Average wind speed in September: 8.4km/h
The windiest months (with the highest average wind speed) are January and March (10.7km/h).
The calmest month (with the lowest average wind speed) is June (7.6km/h).
Average humidity in September
Onojo, Japan
- Average humidity in September: 80%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is March (73%).
Average rainfall in September
Onojo, Japan
- Average rainfall in September: 89mm
The wettest month (with the highest rainfall) is July (221mm).
The driest month (with the least rainfall) is January (51mm).
Average rainfall days in September
Onojo, Japan
- Average rainfall days in September: 16.3 days
The month with the highest number of rainy days is July (22.5 days).
The month with the least rainy days is October (11.4 days).
Average snowfall in September
Onojo, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (33mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Onojo, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.7 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
Onojo, 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: 7h and 36min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in September
Onojo, Japan
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (7.1 days).
Average UV index in September
Onojo, 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
Onojo, Japan
- Average cloud cover in September: 44
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and October (Cloud cover 39).
Average visibility in September
Onojo, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, September, October, November and December (9km).
The months with the lowest visibility are June, July and August (8km).
