September weather forecastSasayama, Japan
September
Weather in September
September, the first month of the autumn in Sasayama, is still a warm month, with an average temperature ranging between max 26°C (78.8°F) and min 18.2°C (64.8°F).Temperature
The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a tropical 30.7°C (87.3°F) in August to a warm 26°C (78.8°F). In Sasayama, an average nighttime temperature of 18.2°C (64.8°F) is expected during September.Humidity
In September, the average relative humidity in Sasayama, Japan, is 82%.Rainfall
In Sasayama, Japan, during September, the rain falls for 12.5 days and regularly aggregates up to 36mm (1.42") of precipitation. In Sasayama, during the entire year, the rain falls for 131.4 days and collects up to 393mm (15.47") of precipitation.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September in Sasayama is 12h and 25min.On the first day of the month, sunrise is at 05:31 and sunset at 18:26. On the last day of September, in Sasayama, sunrise is at 05:53 and sunset at 17:44 JST.
Sunshine
The average sunshine in September is 8.5h.UV index
The average daily maximum UV index in September in Sasayama is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 5 during September leads to these advisories:
Make use of precautions - Suggestions to resist sunburn are communicated. To protect against the Sun's most potent rays, avoid direct exposure around midday. 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
Sasayama, Japan
- Average high temperature in September: 26°C
The warmest month (with the highest average high temperature) is August (30.7°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in September: 18.2°C
The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (0.3°C).
Average pressure in September
Sasayama, Japan
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is February (1020mbar).
The month with the lowest atmospheric pressure is June (1008.7mbar).
Average wind speed in September
Sasayama, Japan
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is March (9.8km/h).
The calmest month (with the lowest average wind speed) is June (7.5km/h).
Average humidity in September
Sasayama, Japan
- Average humidity in September: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is May (75%).
Average rainfall in September
Sasayama, Japan
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is July (88mm).
The driest months (with the least rainfall) are January and November (9mm).
Average rainfall days in September
Sasayama, Japan
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
Sasayama, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Sasayama, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.1 days).
The months with the least snowfall days are May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Sasayama, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in September: 8h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in September
Sasayama, Japan
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is January (21.6 days).
The month with the least sunshine days is July (9.2 days).
Average UV index in September
Sasayama, 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
Sasayama, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Sasayama, Japan
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, October, November and December (9km).
The months with the lowest visibility are June, July, August and September (8km).
