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
A moderate decline in average high-temperatures is noted in September, moving from a moderately hot 26.5°C (79.7°F) in August to a pleasant 22.6°C (72.7°F). Throughout September, the average low-temperature dips to a moderate 15.4°C (59.7°F).Humidity
The average relative humidity in September is 80%.Rainfall
In Ajigasawa, Japan, during September, the rain falls for 13.5 days and regularly aggregates up to 54mm (2.13") of precipitation. In Ajigasawa, during the entire year, the rain falls for 148.4 days and collects up to 688mm (27.09") of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Ajigasawa, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 05:06 and sunset at 18:12. On the last day of the month, sunrise is at 05:34 and sunset at 17:23 JST.
Sunshine
In September, the average sunshine is 8.2h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The UV index of 4 in September translates into these instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What are September temperatures in Ajigasawa?
What is the average humidity in September in Ajigasawa?
How much does it rain in Ajigasawa in September?
When it does not snow in Ajigasawa?
What is the average length of the day in September in Ajigasawa?
When is the sunrise / sunset in September in Ajigasawa?
How many hours of sunshine does Ajigasawa have in September?
How high is the UV index in September in Ajigasawa?
Average temperature in September
Ajigasawa, Japan
- Average high temperature in September: 22.6°C
The warmest month (with the highest average high temperature) is August (26.5°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in September: 15.4°C
The month with the highest average low temperature is August (19.1°C).
The coldest month (with the lowest average low temperature) is February (-5°C).
Average pressure in September
Ajigasawa, Japan
- Average pressure in September: 1013.7mbar
The month with the highest atmospheric pressure is November (1017.5mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in September
Ajigasawa, Japan
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is December (18.5km/h).
The calmest month (with the lowest average wind speed) is July (9.7km/h).
Average humidity in September
Ajigasawa, Japan
- Average humidity in September: 80%
The months with the highest relative humidity are January, February and July (86%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Ajigasawa, Japan
- Average rainfall in September: 54mm
The wettest month (with the highest rainfall) is July (88mm).
The driest month (with the least rainfall) is May (37mm).
Average rainfall days in September
Ajigasawa, Japan
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in September
Ajigasawa, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is December (326mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Ajigasawa, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (23.8 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
Ajigasawa, Japan
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in September
Ajigasawa, Japan
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is May (17.4 days).
The month with the least sunshine days is January (4.3 days).
Average UV index in September
Ajigasawa, Japan
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in September
Ajigasawa, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 84).
The month with the least cloud cover is September (Cloud cover 38).
Average visibility in September
Ajigasawa, Japan
- Average visibility in September: 9km
The month with the highest visibility is October (10km).
The months with the lowest visibility are January, February, June, July, August and December (8km).
Ajigasawa, Japan
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