September weather forecastNajima, Japan
September
Weather in September
September, the first month of the autumn in Najima, is also a moderately hot month, with temperature in the range of an average high of 26.2°C (79.2°F) and an average low of 20.6°C (69.1°F).Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a hot 30.3°C (86.5°F) in August to a moderately hot 26.2°C (79.2°F). Najima observes an average nighttime temperature of 20.6°C (69.1°F) during September.Humidity
In Najima, the average relative humidity in September is 79%.Rainfall
In Najima, in September, it is raining for 15.7 days, with typically 85mm (3.35") of accumulated precipitation. In Najima, during the entire year, the rain falls for 178 days and collects up to 1063mm (41.85") of precipitation.Snowfall
April through November are months without snowfall.Daylight
In Najima, the average length of the day in September is 12h and 23min.On the first day of September, sunrise is at 05:52 and sunset at 18:44. On the last day of the month, sunrise is at 06:12 and sunset at 18:04 JST.
Sunshine
The average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Najima, Japan
- Average high temperature in September: 26.2°C
The warmest month (with the highest average high temperature) is August (30.3°C).
The month with the lowest average high temperature is January (8.4°C).
- Average low temperature in September: 20.6°C
The month with the highest average low temperature is August (24.1°C).
The coldest month (with the lowest average low temperature) is January (3.8°C).
Average pressure in September
Najima, Japan
- Average pressure in September: 1012.2mbar
The month with the highest atmospheric pressure is January (1022.1mbar).
The month with the lowest atmospheric pressure is June (1008.2mbar).
Average wind speed in September
Najima, Japan
- Average wind speed in September: 11.4km/h
The windiest month (with the highest average wind speed) is January (14.2km/h).
The calmest month (with the lowest average wind speed) is June (9.4km/h).
Average humidity in September
Najima, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is July (84%).
The months with the lowest relative humidity are January, February and March (72%).
Average rainfall in September
Najima, Japan
- Average rainfall in September: 85mm
The wettest month (with the highest rainfall) is July (193mm).
The driest month (with the least rainfall) is January (52mm).
Average rainfall days in September
Najima, Japan
- Average rainfall days in September: 15.7 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is May (10.8 days).
Average snowfall in September
Najima, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (22mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Najima, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Najima, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Najima, Japan
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is May (18.6 days).
The month with the least sunshine days is July (8.4 days).
Average UV index in September
Najima, 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
Najima, Japan
- Average cloud cover in September: 40
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Najima, Japan
- Average visibility in September: 10km
The months with the highest visibility are March, September, October, November and December (10km).
The months with the lowest visibility are January, February, April, May, June, July and August (9km).
