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 records an average high-temperature of a pleasant 20.6°C (69.1°F), closely related to the 23.1°C (73.6°F) observed in August. Throughout September, the temperature tends to fall to a consistent average low of 15.4°C (59.7°F).Humidity
The average relative humidity in September is 79%.Rainfall
In Suttsu, in September, during 16.1 rainfall days, 75mm (2.95") of precipitation is typically accumulated. Throughout the year, there are 149.3 rainfall days, and 817mm (32.17") of precipitation is accumulated.Snowfall
May through September are months without snowfall in Suttsu.Daylight
In Suttsu, the average length of the day in September is 12h and 31min.On the first day of the month, sunrise is at 05:03 and sunset at 18:14. On the last day of September, in Suttsu, sunrise is at 05:35 and sunset at 17:22 JST.
Sunshine
The average sunshine in September is 8.4h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 during September translates into the following guidance:
Undertake protective steps - Preventing sun damage is advised. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
What is the usual temperature for Suttsu in September?
What is the average humidity in September in Suttsu?
How many days does it rain in September in Suttsu?
When it does not snow in Suttsu?
Does it snow in Suttsu in September?
How many hours of daylight does Suttsu have in September?
What time are sunrise and sunset in September in Suttsu?
How many hours of sunshine does Suttsu have in September?
What is the month with the highest UV index in Suttsu?
What is the UV index reading in September in Suttsu?
Average temperature in September
Suttsu, Japan
- Average high temperature in September: 20.6°C
The warmest month (with the highest average high temperature) is August (23.1°C).
The month with the lowest average high temperature is January (-1.7°C).
- Average low temperature in September: 15.4°C
The month with the highest average low temperature is August (18.3°C).
The coldest month (with the lowest average low temperature) is February (-5.5°C).
Average pressure in September
Suttsu, Japan
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is November (1016.5mbar).
The month with the lowest atmospheric pressure is July (1008.3mbar).
Average wind speed in September
Suttsu, Japan
- Average wind speed in September: 13.7km/h
The windiest month (with the highest average wind speed) is December (21.6km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).
Average humidity in September
Suttsu, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Suttsu, Japan
- Average rainfall in September: 75mm
The wettest month (with the highest rainfall) is December (101mm).
The driest month (with the least rainfall) is April (46mm).
Average rainfall days in September
Suttsu, Japan
- Average rainfall days in September: 16.1 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is January (3.9 days).
Average snowfall in September
Suttsu, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is December (301mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Suttsu, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (24 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
Suttsu, 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 August (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in September
Suttsu, Japan
- Average sunshine days in September: 10.2 days
The month with the most sunshine days is May (15.2 days).
The month with the least sunshine days is December (2.5 days).
Average UV index in September
Suttsu, Japan
- Average UV index in September: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in September
Suttsu, Japan
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 84).
The month with the least cloud cover is September (Cloud cover 37).
Average visibility in September
Suttsu, Japan
- Average visibility in September: 10km
The months with the highest visibility are September and October (10km).
The months with the lowest visibility are January and December (7km).
Suttsu, Japan
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