September weather forecastAshiya, Japan
September
Weather in September
The first month of the autumn, September, is also a moderately hot month in Ashiya, Japan, with an average temperature ranging between max 26.5°C (79.7°F) and min 19.7°C (67.5°F).Temperature
Ashiya's progression into September involves a minor drop in the average high-temperature, slightly receding from a tropical 30.8°C (87.4°F) in August to a warm 26.5°C (79.7°F). An average low-temperature of 19.7°C (67.5°F) is noted in Ashiya during the month of September.Humidity
The average relative humidity in September is 78%.Rainfall
In Ashiya, in September, during 16.9 rainfall days, 122mm (4.8") of precipitation is typically accumulated. Throughout the year, in Ashiya, there are 207 rainfall days, and 1194mm (47.01") of precipitation is accumulated.Snowfall
April through November are months without snowfall.Daylight
The average length of the day in September is 12h and 24min.On the first day of September, sunrise is at 05:31 and sunset at 18:25. On the last day of the month, sunrise is at 05:52 and sunset at 17:44 JST.
Sunshine
The average sunshine in September is 9.2h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 5 during September leads to these advisories:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ashiya, Japan
- Average high temperature in September: 26.5°C
The warmest month (with the highest average high temperature) is August (30.8°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in September: 19.7°C
The month with the highest average low temperature is August (23.9°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).
Average pressure in September
Ashiya, Japan
- Average pressure in September: 1012.8mbar
The month with the highest atmospheric pressure is February (1019.9mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).
Average wind speed in September
Ashiya, Japan
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is January (11.5km/h).
The calmest month (with the lowest average wind speed) is June (8.3km/h).
Average humidity in September
Ashiya, Japan
- Average humidity in September: 78%
The month with the highest relative humidity is July (81%).
The months with the lowest relative humidity are April and May (72%).
Average rainfall in September
Ashiya, Japan
- Average rainfall in September: 122mm
The wettest month (with the highest rainfall) is July (196mm).
The driest month (with the least rainfall) is January (49mm).
Average rainfall days in September
Ashiya, Japan
- Average rainfall days in September: 16.9 days
The month with the highest number of rainy days is July (23.2 days).
The month with the least rainy days is November (14.1 days).
Average snowfall in September
Ashiya, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (96mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Ashiya, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.6 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
Ashiya, 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: 9h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Ashiya, Japan
- Average sunshine days in September: 10.8 days
The month with the most sunshine days is May (14.8 days).
The month with the least sunshine days is July (5.6 days).
Average UV index in September
Ashiya, 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 and December (UV index 2).
Average cloud cover in September
Ashiya, Japan
- Average cloud cover in September: 36
The months with the most cloud cover are January and February (Cloud cover 46).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Ashiya, Japan
- Average visibility in September: 9km
The months with the highest visibility are November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September and October (9km).
