September weather forecastBise, Japan
September
Weather in September
The first month of the autumn, September, is still a warm month in Bise, Japan, with temperature in the range of an average high of 28.5°C (83.3°F) and an average low of 27.1°C (80.8°F).Temperature
An average high-temperature of a still warm 28.5°C (83.3°F) marks September, exhibiting a close resemblance to the conditions in August. Bise's temperature during September nights registers a minor decrease to an average low of 27.1°C (80.8°F).Heat index
Throughout September, the heat index is evaluated at a hot 33°C (91.4°F). Undertake extra safety actions, heat cramps and heat exhaustion are expected. Heatstroke may result from lengthy activity.It is noted that heat index values are ascertained for locations in the shade and with gentle breezes. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', is found by incorporating humidity levels into the air temperature measurement. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. Being under direct sunshine can magnify the heat experience, possibly pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Young people are generally more susceptible than adults because they perspire less. Furthermore, their proportionally larger skin surface to their petite bodies and the increased heat output from their actions add to the risk.
Humidity
In Bise, Japan, the average relative humidity in September is 79%.Rainfall
In September, the rain falls for 22.9 days. Throughout September, 154mm (6.06") of precipitation is accumulated. Throughout the year, there are 240.8 rainfall days, and 1563mm (61.54") of precipitation is accumulated.Daylight
In Bise, the average length of the day in September is 12h and 19min.On the first day of September in Bise, Japan, sunrise is at 06:08 and sunset at 18:48. On the last day of the month, sunrise is at 06:20 and sunset at 18:16 JST.
Sunshine
The average sunshine in September in Bise is 8.1h.UV index
The months with the highest UV index in Bise are June through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 7 suggests this advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Bise, Japan
- Average high temperature in September: 28.5°C
The warmest month (with the highest average high temperature) is August (29.5°C).
The month with the lowest average high temperature is January (18.6°C).
- Average low temperature in September: 27.1°C
The month with the highest average low temperature is August (28°C).
The coldest month (with the lowest average low temperature) is January (16.7°C).
Average pressure in September
Bise, Japan
- Average pressure in September: 1009.2mbar
The month with the highest atmospheric pressure is January (1021.1mbar).
The month with the lowest atmospheric pressure is August (1006.6mbar).
Average wind speed in September
Bise, Japan
- Average wind speed in September: 22.9km/h
The windiest month (with the highest average wind speed) is December (28.3km/h).
The calmest month (with the lowest average wind speed) is May (20.2km/h).
Average humidity in September
Bise, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is June (86%).
The months with the lowest relative humidity are January and December (72%).
Average rainfall in September
Bise, Japan
- Average rainfall in September: 154mm
The wettest month (with the highest rainfall) is June (241mm).
The driest month (with the least rainfall) is January (64mm).
Average rainfall days in September
Bise, Japan
- Average rainfall days in September: 22.9 days
The month with the highest number of rainy days is June (23.3 days).
The month with the least rainy days is November (17.6 days).
Average daylight in September /
Average sunshine in September
Bise, Japan
- Average daylight in September: 12h and 18min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Bise, Japan
- Average sunshine days in September: 3.8 days
The months with the most sunshine days are April and May (9.6 days).
The month with the least sunshine days is September (3.8 days).
Average UV index in September
Bise, Japan
- Average UV index in September: 7
The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in September
Bise, Japan
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in September
Bise, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (10km).
The month with the lowest visibility is May (9km).
