September weather forecastBiei, Japan
September
Weather in September
September, the first month of the autumn in Biei, is still a comfortable month, with temperature in the range of an average low of 10.5°C (50.9°F) and an average high of 19.8°C (67.6°F).Temperature
Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 24.3°C (75.7°F) in August to an enjoyable 19.8°C (67.6°F). In the month of September, an average of 10.5°C (50.9°F) marks the low-temperature in Biei, Japan.Humidity
In Biei, the average relative humidity in September is 82%.Rainfall
In September, the rain falls for 15.4 days. Throughout September, 66mm (2.6") of precipitation is accumulated. Throughout the year, in Biei, there are 151.5 rainfall days, and 739mm (29.09") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Biei.Daylight
In September, the average length of the day in Biei is 12h and 31min.On the first day of the month, sunrise is at 04:54 and sunset at 18:06. On the last day of September, in Biei, Japan, sunrise is at 05:26 and sunset at 17:13 JST.
Sunshine
In September, the average sunshine in Biei is 7.8h.UV index
In Biei, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Biei, Japan
- Average high temperature in September: 19.8°C
The warmest months (with the highest average high temperature) are July and August (24.3°C).
The month with the lowest average high temperature is January (-5.5°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is February (-13.4°C).
Average pressure in September
Biei, Japan
- Average pressure in September: 1013.6mbar
The months with the highest atmospheric pressure are October and November (1015.5mbar).
The month with the lowest atmospheric pressure is July (1008.7mbar).
Average wind speed in September
Biei, Japan
- Average wind speed in September: 8km/h
The windiest month (with the highest average wind speed) is April (10.5km/h).
The calmest months (with the lowest average wind speed) are July and August (7.1km/h).
Average humidity in September
Biei, Japan
- Average humidity in September: 82%
The months with the highest relative humidity are January, February and December (93%).
The month with the lowest relative humidity is May (74%).
Average rainfall in September
Biei, Japan
- Average rainfall in September: 66mm
The wettest month (with the highest rainfall) is August (96mm).
The driest month (with the least rainfall) is April (41mm).
Average rainfall days in September
Biei, Japan
- Average rainfall days in September: 15.4 days
The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is January (5 days).
Average snowfall in September
Biei, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is December (559mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Biei, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (26.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Biei, Japan
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 8h and 54min).
The months with the least sunshine are January and December (Average sunshine: 2h and 12min).
Average sunshine days in September
Biei, Japan
- Average sunshine days in September: 12.1 days
The month with the most sunshine days is May (14.8 days).
The month with the least sunshine days is December (3.2 days).
Average UV index in September
Biei, Japan
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Biei, Japan
- Average cloud cover in September: 43
The month with the most cloud cover is January (Cloud cover 78).
The month with the least cloud cover is September (Cloud cover 43).
Average visibility in September
Biei, Japan
- Average visibility in September: 8km
The month with the highest visibility is May (9km).
The month with the lowest visibility is January (5km).
