September weather forecastNishijima, Japan
September
Weather in September
September, the first month of the autumn in Nishijima, is still a warm month, with an average temperature fluctuating between 20.1°C (68.2°F) and 26.2°C (79.2°F).Temperature
Nishijima's weather subtly changes with the onset of September, barely falling from a moderately hot 29.5°C (85.1°F) in August to a still warm 26.2°C (79.2°F). Nishijima experiences an average low-temperature of 20.1°C (68.2°F) in month of September.Humidity
The average relative humidity in September is 78%.Rainfall
In Nishijima, in September, it is raining for 14.7 days, with typically 97mm (3.82") of accumulated precipitation. Throughout the year, there are 154.1 rainfall days, and 1085mm (42.72") of precipitation is accumulated.Snowfall
In Nishijima, snow does not fall in January, March through December.Daylight
The average length of the day in September in Nishijima is 12h and 24min.On the first day of September, sunrise is at 05:19 and sunset at 18:13. On the last day of the month, sunrise is at 05:40 and sunset at 17:32 JST.
Sunshine
In September, the average sunshine in Nishijima is 8.9h.UV index
In September, the average daily maximum UV index in Nishijima is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In September, a daily UV index of 5 turns into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Nishijima, Japan
- Average high temperature in September: 26.2°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 (9.2°C).
- Average low temperature in September: 20.1°C
The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in September
Nishijima, Japan
- Average pressure in September: 1013.2mbar
The month with the highest atmospheric pressure is November (1018.3mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Nishijima, Japan
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is January (14km/h).
The calmest month (with the lowest average wind speed) is August (9.5km/h).
Average humidity in September
Nishijima, Japan
- Average humidity in September: 78%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (62%).
Average rainfall in September
Nishijima, Japan
- Average rainfall in September: 97mm
The wettest month (with the highest rainfall) is July (180mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days in September
Nishijima, Japan
- Average rainfall days in September: 14.7 days
The months with the highest number of rainy days are June and July (17.3 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in September
Nishijima, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (1mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Nishijima, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Nishijima, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).
Average sunshine days in September
Nishijima, Japan
- Average sunshine days in September: 12.4 days
The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Nishijima, 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, February, March and December (UV index 3).
Average cloud cover in September
Nishijima, Japan
- Average cloud cover in September: 34
The month with the most cloud cover is June (Cloud cover 42).
The month with the least cloud cover is January (Cloud cover 22).
Average visibility in September
Nishijima, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, August, September, October, November and December (10km).
The months with the lowest visibility are June and July (9km).
