September weather forecastBibai, Japan
September
Weather in September
The first month of the autumn, September, is also an agreeable month in Bibai, Japan, with temperature in the range of an average low of 12°C (53.6°F) and an average high of 20.4°C (68.7°F).Temperature
September implies a soft temperature shift, with average high-temperatures reducing from August's moderately hot 24.2°C (75.6°F) to a pleasant 20.4°C (68.7°F). In Bibai, the average temperature during the nights of September drops to a cool 12°C (53.6°F).Humidity
In September, the average relative humidity in Bibai is 84%.Rainfall
In September, the rain falls for 16.6 days. Throughout September, 74mm (2.91") of precipitation is accumulated. Throughout the year, in Bibai, there are 162.3 rainfall days, and 769mm (30.28") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September in Bibai, Japan, is 12h and 31min.On the first day of the month, sunrise is at 04:56 and sunset at 18:08. On the last day of September, in Bibai, Japan, sunrise is at 05:29 and sunset at 17:16 JST.
Sunshine
The average sunshine in September is 7.9h.UV index
In Bibai, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 4 transforms into these recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bibai, Japan
- Average high temperature in September: 20.4°C
The warmest month (with the highest average high temperature) is August (24.2°C).
The month with the lowest average high temperature is January (-3.7°C).
- Average low temperature in September: 12°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (-10.6°C).
Average pressure in September
Bibai, Japan
- Average pressure in September: 1013.5mbar
The month with the highest atmospheric pressure is November (1016mbar).
The month with the lowest atmospheric pressure is July (1008.7mbar).
Average wind speed in September
Bibai, Japan
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is April (12.1km/h).
The calmest month (with the lowest average wind speed) is August (8.2km/h).
Average humidity in September
Bibai, Japan
- Average humidity in September: 84%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Bibai, Japan
- Average rainfall in September: 74mm
The wettest month (with the highest rainfall) is August (118mm).
The driest months (with the least rainfall) are February and April (44mm).
Average rainfall days in September
Bibai, Japan
- Average rainfall days in September: 16.6 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in September
Bibai, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is December (394mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Bibai, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (25.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Bibai, Japan
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is May (Average sunshine: 8h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in September
Bibai, Japan
- Average sunshine days in September: 10.7 days
The month with the most sunshine days is May (13.8 days).
The month with the least sunshine days is December (3 days).
Average UV index in September
Bibai, 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, November and December (UV index 1).
Average cloud cover in September
Bibai, Japan
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is September (Cloud cover 41).
Average visibility in September
Bibai, Japan
- Average visibility in September: 8km
The months with the highest visibility are April, May and October (9km).
The month with the lowest visibility is January (6km).
