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 arrival of September corresponds with a minor reduction in the average high-temperature, down from August's moderately hot 24.1°C (75.4°F) to an agreeable 20.9°C (69.6°F). In Chitose, an average nighttime temperature of 13.9°C (57°F) is expected during September.Humidity
In Chitose, the average relative humidity in September is 81%.Rainfall
In Chitose, Japan, during September, the rain falls for 13.1 days and regularly aggregates up to 56mm (2.2") of precipitation. Throughout the year, in Chitose, there are 138.9 rainfall days, and 539mm (21.22") of precipitation is accumulated.Snowfall
In Chitose, snow does not fall in May through October.Daylight
The average length of the day in September in Chitose is 12h and 31min.On the first day of September in Chitose, sunrise is at 04:58 and sunset at 18:08. On the last day of the month, sunrise is at 05:29 and sunset at 17:17 JST.
Sunshine
In September, the average sunshine is 8.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 4 in September translates into the following instructions:
Undertake precautions - Guarding against sun damage is counselled. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
What are September temperatures in Chitose?
What is the average humidity in September in Chitose?
How much does it rain in Chitose in September?
When it does not snow in Chitose?
What is the average length of the day in September in Chitose?
When are sunrise and sunset in September in Chitose?
How many hours of sunshine does Chitose have in September?
What is the UV index intensity in September in Chitose?
Average temperature in September
Chitose, Japan
- Average high temperature in September: 20.9°C
The warmest month (with the highest average high temperature) is August (24.1°C).
The month with the lowest average high temperature is January (-2.3°C).
- Average low temperature in September: 13.9°C
The month with the highest average low temperature is August (17.5°C).
The coldest month (with the lowest average low temperature) is February (-8.8°C).
Average pressure in September
Chitose, Japan
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is November (1016.2mbar).
The month with the lowest atmospheric pressure is July (1008.8mbar).
Average wind speed in September
Chitose, Japan
- Average wind speed in September: 10.9km/h
The windiest month (with the highest average wind speed) is April (13.3km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).
Average humidity in September
Chitose, Japan
- Average humidity in September: 81%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Chitose, Japan
- Average rainfall in September: 56mm
The wettest month (with the highest rainfall) is August (94mm).
The driest month (with the least rainfall) is January (20mm).
Average rainfall days in September
Chitose, Japan
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is August (16.9 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in September
Chitose, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (147mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Chitose, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Chitose, Japan
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is May (Average sunshine: 9h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Chitose, Japan
- Average sunshine days in September: 12.6 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is July (10.5 days).
Average UV index in September
Chitose, 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, February, March, November and December (UV index 2).
Average cloud cover in September
Chitose, Japan
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are September and October (Cloud cover 34).
Average visibility in September
Chitose, Japan
- Average visibility in September: 9km
The months with the highest visibility are October and November (10km).
The month with the lowest visibility is July (8km).
Chitose, Japan
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