September weather forecastSusa, Japan
September
Weather in September
The first month of the autumn, September, is still a warm month in Susa, Japan, with an average temperature ranging between max 24.3°C (75.7°F) and min 19.2°C (66.6°F).Temperature
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from 28.2°C (82.8°F) to a still moderately hot 24.3°C (75.7°F). The average low-temperature during September nights is a refreshing 19.2°C (66.6°F).Humidity
The average relative humidity in September is 82%.Rainfall
In Susa, in September, it is raining for 18.5 days, with typically 124mm (4.88") of accumulated precipitation. In Susa, during the entire year, the rain falls for 209.9 days and collects up to 1304mm (51.34") of precipitation.Snowfall
In Susa, snow does not fall in April through October.Daylight
In September, the average length of the day is 12h and 24min.On the first day of September, sunrise is at 05:46 and sunset at 18:40. On the last day of the month, sunrise is at 06:07 and sunset at 17:59 JST.
Sunshine
In Susa, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 5 in September transforms into the following instructions:
Take necessary precautions - Defending against sun damage is advocated. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Susa, Japan
- Average high temperature in September: 24.3°C
The warmest month (with the highest average high temperature) is August (28.2°C).
The month with the lowest average high temperature is January (6.3°C).
- Average low temperature in September: 19.2°C
The month with the highest average low temperature is August (22.8°C).
The coldest month (with the lowest average low temperature) is January (2.1°C).
Average pressure in September
Susa, Japan
- Average pressure in September: 1012.7mbar
The month with the highest atmospheric pressure is January (1021.3mbar).
The month with the lowest atmospheric pressure is June (1008.3mbar).
Average wind speed in September
Susa, Japan
- Average wind speed in September: 10.7km/h
The windiest month (with the highest average wind speed) is December (15.6km/h).
The calmest month (with the lowest average wind speed) is June (8.8km/h).
Average humidity in September
Susa, Japan
- Average humidity in September: 82%
The month with the highest relative humidity is July (87%).
The month with the lowest relative humidity is March (74%).
Average rainfall in September
Susa, Japan
- Average rainfall in September: 124mm
The wettest month (with the highest rainfall) is July (236mm).
The driest month (with the least rainfall) is November (56mm).
Average rainfall days in September
Susa, Japan
- Average rainfall days in September: 18.5 days
The month with the highest number of rainy days is July (24.3 days).
The month with the least rainy days is May (12.9 days).
Average snowfall in September
Susa, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (74mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Susa, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Susa, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 24min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Susa, Japan
- Average sunshine days in September: 8.9 days
The month with the most sunshine days is May (15.7 days).
The month with the least sunshine days is July (4.8 days).
Average UV index in September
Susa, 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, February and December (UV index 2).
Average cloud cover in September
Susa, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are May and August (Cloud cover 35).
Average visibility in September
Susa, 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).
