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
Yonezawa observes a small decrease in the average high-temperature with the arrival of September, falling from August's 28.1°C (82.6°F) to a still moderately hot 23.2°C (73.8°F). During the month of September, the nighttime temperature falls to an average of 14°C (57.2°F).Humidity
The average relative humidity in September in Yonezawa, Japan, is 84%.Rainfall
In September, in Yonezawa, Japan, the rain falls for 14.3 days. Throughout September, 61mm (2.4") of precipitation is accumulated. Throughout the year, there are 147.7 rainfall days, and 805mm (31.69") of precipitation is accumulated.Snowfall
In Yonezawa, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September in Yonezawa, sunrise is at 05:09 and sunset at 18:09. On the last day of the month, sunrise is at 05:34 and sunset at 17:24 JST.
Sunshine
In Yonezawa, the average sunshine in September is 7.3h.UV index
The average daily maximum UV index in September in Yonezawa, Japan, is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 during September translates into the following directions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Yonezawa?
What is the average humidity in September in Yonezawa?
How many days does it rain in September in Yonezawa?
When it does not snow in Yonezawa?
What is the average length of the day in September in Yonezawa?
When are sunrise and sunset in September in Yonezawa?
How many hours of sunshine does Yonezawa have in September?
What is the UV index intensity in September in Yonezawa?
Average temperature in September
Yonezawa, Japan
- Average high temperature in September: 23.2°C
The warmest month (with the highest average high temperature) is August (28.1°C).
The month with the lowest average high temperature is January (-0.1°C).
- Average low temperature in September: 14°C
The month with the highest average low temperature is August (18.2°C).
The coldest month (with the lowest average low temperature) is February (-5.9°C).
Average pressure in September
Yonezawa, Japan
- Average pressure in September: 1014.1mbar
The month with the highest atmospheric pressure is November (1018.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in September
Yonezawa, Japan
- Average wind speed in September: 7.1km/h
The windiest month (with the highest average wind speed) is January (12.1km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in September
Yonezawa, Japan
- Average humidity in September: 84%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Yonezawa, Japan
- Average rainfall in September: 61mm
The wettest month (with the highest rainfall) is July (137mm).
The driest month (with the least rainfall) is February (30mm).
Average rainfall days in September
Yonezawa, Japan
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is August (21.3 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in September
Yonezawa, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (317mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Yonezawa, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Yonezawa, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is May (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in September
Yonezawa, Japan
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is May (18.6 days).
The month with the least sunshine days is August (7.8 days).
Average UV index in September
Yonezawa, Japan
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Yonezawa, Japan
- Average cloud cover in September: 49
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 39).
Average visibility in September
Yonezawa, Japan
- Average visibility in September: 7km
The month with the highest visibility is April (9km).
The month with the lowest visibility is January (6km).
Yonezawa, Japan
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