September weather forecastInotani, Japan
September
Weather in September
September, the first month of the autumn in Inotani, is still a warm month, with an average temperature ranging between min 16.7°C (62.1°F) and max 23°C (73.4°F).Temperature
The transition to September results in a modest reduction in average high-temperature, moving from a moderately hot 27.9°C (82.2°F) in August to a still warm 23°C (73.4°F). An average low-temperature of 16.7°C (62.1°F) is recorded during the nights in September.Humidity
The average relative humidity in September in Inotani is 80%.Rainfall
In Inotani, in September, it is raining for 16.4 days, with typically 97mm (3.82") of accumulated precipitation. Throughout the year, there are 218.8 rainfall days, and 1305mm (51.38") of precipitation is accumulated.Snowfall
May through November are months without snowfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 05:22 and sunset at 18:19. On the last day of September, sunrise is at 05:45 and sunset at 17:36 JST.
Sunshine
The average sunshine in September is 8.6h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.Note: During September, 5 as the daily maximum UV index converts into the following advice:
Put precautions into practice - Guidance to elude sunburn is provided. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Inotani, Japan
- Average high temperature in September: 23°C
The warmest month (with the highest average high temperature) is August (27.9°C).
The month with the lowest average high temperature is January (2.6°C).
- Average low temperature in September: 16.7°C
The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is February (-2.8°C).
Average pressure in September
Inotani, Japan
- Average pressure in September: 1013.7mbar
The months with the highest atmospheric pressure are February and November (1019.4mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Inotani, Japan
- Average wind speed in September: 8.1km/h
The windiest month (with the highest average wind speed) is December (12km/h).
The calmest months (with the lowest average wind speed) are June and August (7.4km/h).
Average humidity in September
Inotani, Japan
- Average humidity in September: 80%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Inotani, Japan
- Average rainfall in September: 97mm
The wettest month (with the highest rainfall) is July (179mm).
The driest month (with the least rainfall) is May (64mm).
Average rainfall days in September
Inotani, Japan
- Average rainfall days in September: 16.4 days
The month with the highest number of rainy days is July (24.8 days).
The month with the least rainy days is May (14.4 days).
Average snowfall in September
Inotani, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (469mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Inotani, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Inotani, Japan
- Average daylight in September: 12h and 24min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
Inotani, Japan
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is May (13.6 days).
The month with the least sunshine days is January (3.5 days).
Average UV index in September
Inotani, Japan
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Inotani, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is May (Cloud cover 33).
Average visibility in September
Inotani, Japan
- Average visibility in September: 9km
The month with the highest visibility is October (10km).
The month with the lowest visibility is January (8km).
