September weather forecastYaotsu, Japan
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Yaotsu, Japan, with temperature in the range of an average high of 26.9°C (80.4°F) and an average low of 17.9°C (64.2°F).Temperature
Yaotsu's transition into September involves a gentle shift in temperature, receding from a tropical 31.7°C (89.1°F) in August to a warm 26.9°C (80.4°F). Nighttime temperature in Yaotsu, Japan, lowers to an average of 17.9°C (64.2°F) in September.Humidity
In September, the average relative humidity is 76%.Rainfall
In Yaotsu, in September, it is raining for 11.7 days, with typically 88mm (3.46") of accumulated precipitation. In Yaotsu, during the entire year, the rain falls for 145.5 days and collects up to 996mm (39.21") of precipitation.Snowfall
In Yaotsu, snow does not fall in April through November.Daylight
In September, the average length of the day in Yaotsu is 12h and 25min.On the first day of September, sunrise is at 05:23 and sunset at 18:18. On the last day of the month, sunrise is at 05:45 and sunset at 17:37 JST.
Sunshine
In September, the average sunshine in Yaotsu is 8.9h.UV index
In Yaotsu, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Yaotsu, Japan
- Average high temperature in September: 26.9°C
The warmest month (with the highest average high temperature) is August (31.7°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 17.9°C
The month with the highest average low temperature is August (22.1°C).
The coldest month (with the lowest average low temperature) is January (-1.5°C).
Average pressure in September
Yaotsu, Japan
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is November (1019.2mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Yaotsu, Japan
- Average wind speed in September: 6.5km/h
The windiest month (with the highest average wind speed) is March (8.3km/h).
The calmest months (with the lowest average wind speed) are July and August (6.2km/h).
Average humidity in September
Yaotsu, Japan
- Average humidity in September: 76%
The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is May (70%).
Average rainfall in September
Yaotsu, Japan
- Average rainfall in September: 88mm
The wettest month (with the highest rainfall) is July (138mm).
The driest month (with the least rainfall) is January (42mm).
Average rainfall days in September
Yaotsu, Japan
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is March (14.7 days).
The month with the least rainy days is November (9.6 days).
Average snowfall in September
Yaotsu, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (57mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Yaotsu, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 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
Yaotsu, 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: 8h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 48min).
Average sunshine days in September
Yaotsu, Japan
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is August (19.3 days).
The month with the least sunshine days is December (12.4 days).
Average UV index in September
Yaotsu, 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, February and December (UV index 2).
Average cloud cover in September
Yaotsu, Japan
- Average cloud cover in September: 36
The month with the most cloud cover is July (Cloud cover 46).
The month with the least cloud cover is November (Cloud cover 31).
Average visibility in September
Yaotsu, Japan
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, August, September, October, November and December (9km).
The months with the lowest visibility are June and July (8km).
