September weather forecastShirowa, Japan
September
Weather in September
The first month of the autumn, September, is still a warm month in Shirowa, Japan, with an average temperature varying between 23.1°C (73.6°F) and 25.8°C (78.4°F).Temperature
Upon the beginning of September, Shirowa's high-temperatures register at a still warm 25.8°C (78.4°F), closely mirroring the preceding month. An average low-temperature of 23.1°C (73.6°F) is witnessed throughout the month of September, a mere drop from the daytime peak.Humidity
In Shirowa, the average relative humidity in September is 77%.Rainfall
In September, the rain falls for 16.6 days. Throughout September, 124mm (4.88") of precipitation is accumulated. Throughout the year, there are 168.2 rainfall days, and 1268mm (49.92") of precipitation is accumulated.Snowfall
March through November are months without snowfall.Daylight
The average length of the day in September is 12h and 24min.On the first day of the month, sunrise is at 05:20 and sunset at 18:13. On the last day of September, in Shirowa, Japan, sunrise is at 05:41 and sunset at 17:33 JST.
Sunshine
The average sunshine in September in Shirowa, Japan, is 8.8h.UV index
In Shirowa, Japan, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 6 in September interprets into the following recommendations:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. UV radiation from the Sun is most intense between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Shirowa, Japan
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is August (28.3°C).
The month with the lowest average high temperature is January (10.3°C).
- Average low temperature in September: 23.1°C
The month with the highest average low temperature is August (25.8°C).
The coldest month (with the lowest average low temperature) is January (6.6°C).
Average pressure in September
Shirowa, Japan
- Average pressure in September: 1012.9mbar
The month with the highest atmospheric pressure is November (1018.2mbar).
The month with the lowest atmospheric pressure is June (1009mbar).
Average wind speed in September
Shirowa, Japan
- Average wind speed in September: 18.4km/h
The windiest month (with the highest average wind speed) is January (30.6km/h).
The calmest month (with the lowest average wind speed) is August (16.6km/h).
Average humidity in September
Shirowa, Japan
- Average humidity in September: 77%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is January (63%).
Average rainfall in September
Shirowa, Japan
- Average rainfall in September: 124mm
The wettest month (with the highest rainfall) is July (207mm).
The driest month (with the least rainfall) is January (39mm).
Average rainfall days in September
Shirowa, Japan
- Average rainfall days in September: 16.6 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (7.8 days).
Average snowfall days in September
Shirowa, Japan
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January, February and December (0.1 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Shirowa, 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 48min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in September
Shirowa, Japan
- Average sunshine days in September: 11 days
The month with the most sunshine days is January (21.7 days).
The month with the least sunshine days is June (9.6 days).
Average UV index in September
Shirowa, Japan
- Average UV index in September: 6
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Shirowa, Japan
- Average cloud cover in September: 34
The month with the most cloud cover is June (Cloud cover 43).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility in September
Shirowa, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (10km).
The month with the lowest visibility is July (9km).
