Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
The advent of September brings a slight shift in average high-temperature, moving from a tropical 31.4°C (88.5°F) in August to a moderately hot 26.9°C (80.4°F). Throughout September, Yao witnesses a consistent average low-temperature of 19.2°C (66.6°F).Humidity
In Yao, the average relative humidity in September is 77%.Rainfall
In Yao, in September, during 15 rainfall days, 94mm (3.7") of precipitation is typically accumulated. Throughout the year, in Yao, there are 163.2 rainfall days, and 920mm (36.22") of precipitation is accumulated.Snowfall
In Yao, snow does not fall in April through November.Daylight
In Yao, the average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 05:30 and sunset at 18:24. On the last day of September, in Yao, sunrise is at 05:51 and sunset at 17:43 JST.
Sunshine
The average sunshine in September in Yao is 9h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 5 suggests this advice:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Frequently asked questions
What are the temperatures in Yao in September?
What is the average humidity in September in Yao?
How much does it rain in Yao in September?
When it does not snow in Yao?
How many hours of daylight does Yao have in September?
When are sunrise and sunset in September in Yao?
How long on average sun shines in September in Yao?
How high is the UV index in September in Yao?
Average temperature in September
Yao, Japan
- Average high temperature in September: 26.9°C
The warmest month (with the highest average high temperature) is August (31.4°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in September: 19.2°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 (1.3°C).
Average pressure in September
Yao, Japan
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is February (1019.7mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).
Average wind speed in September
Yao, Japan
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is January (9.5km/h).
The calmest month (with the lowest average wind speed) is June (7.1km/h).
Average humidity in September
Yao, Japan
- Average humidity in September: 77%
The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Yao, Japan
- Average rainfall in September: 94mm
The wettest month (with the highest rainfall) is July (160mm).
The driest month (with the least rainfall) is January (34mm).
Average rainfall days in September
Yao, Japan
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is July (21.7 days).
The month with the least rainy days is February (9.1 days).
Average snowfall in September
Yao, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (27mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Yao, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.3 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
Yao, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 54min).
Average sunshine days in September
Yao, Japan
- Average sunshine days in September: 12.7 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in September
Yao, 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
Yao, Japan
- Average cloud cover in September: 36
The months with the most cloud cover are January and February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Yao, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (9km).
The month with the lowest visibility is July (8km).
Yao, Japan
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