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 onset of September aligns with a soft reduction in the average high-temperature, gently falling from a hot 30.2°C (86.4°F) in August to a warm 26.1°C (79°F). Koyanose experiences an average low-temperature reading of 20.9°C (69.6°F) throughout September.Humidity
In September, the average relative humidity is 79%.Rainfall
In September, the rain falls for 14.6 days. Throughout September, 80mm (3.15") of precipitation is accumulated. Throughout the year, there are 186.7 rainfall days, and 1009mm (39.72") of precipitation is accumulated.Snowfall
April through November are months without snowfall in Koyanose.Daylight
The average length of the day in September in Koyanose is 12h and 23min.On the first day of the month, sunrise is at 05:51 and sunset at 18:43. On the last day of September, in Koyanose, sunrise is at 06:10 and sunset at 18:03 JST.
Sunshine
In Koyanose, the average sunshine in September is 8.5h.UV index
In Koyanose, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Make use of precautions - It is urged to ward off sun damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Frequently asked questions
What is the temperature in September in Koyanose?
What is the average humidity in September in Koyanose?
How much does it rain in Koyanose in September?
When it does not snow in Koyanose?
What is the average length of the day in September in Koyanose?
What time are sunrise and sunset in September in Koyanose?
How long on average sun shines in September in Koyanose?
How high is the UV index in September in Koyanose?
Average temperature in September
Koyanose, Japan
- Average high temperature in September: 26.1°C
The warmest month (with the highest average high temperature) is August (30.2°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in September: 20.9°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 (4.1°C).
Average pressure in September
Koyanose, Japan
- Average pressure in September: 1012.3mbar
The month with the highest atmospheric pressure is January (1021.9mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).
Average wind speed in September
Koyanose, Japan
- Average wind speed in September: 11.2km/h
The windiest months (with the highest average wind speed) are January and December (14.7km/h).
The calmest month (with the lowest average wind speed) is June (9.3km/h).
Average humidity in September
Koyanose, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is March (70%).
Average rainfall in September
Koyanose, Japan
- Average rainfall in September: 80mm
The wettest month (with the highest rainfall) is July (193mm).
The driest month (with the least rainfall) is January (50mm).
Average rainfall days in September
Koyanose, Japan
- Average rainfall days in September: 14.6 days
The month with the highest number of rainy days is July (22.6 days).
The month with the least rainy days is May (11.4 days).
Average snowfall in September
Koyanose, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (31mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Koyanose, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.8 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
Koyanose, 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: 10h and 0min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Koyanose, Japan
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is May (18.4 days).
The month with the least sunshine days is July (6.9 days).
Average UV index in September
Koyanose, 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
Koyanose, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Koyanose, Japan
- Average visibility in September: 10km
The months with the highest visibility are March, September, October, November and December (10km).
The months with the lowest visibility are January, February, April, May, June, July and August (9km).
Koyanose, Japan
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