Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
In the transition to September, Gannosu observes a minor drop in the average high-temperature, shifting from a tropical 30.3°C (86.5°F) in August to a warm 26.2°C (79.2°F). In Gannosu, the September nights cool down to an average low of 20.6°C (69.1°F).Humidity
The average relative humidity in September is 79%.Rainfall
In September, the rain falls for 15.7 days. Throughout September, 85mm (3.35") of precipitation is accumulated. Throughout the year, there are 178 rainfall days, and 1063mm (41.85") of precipitation is accumulated.Snowfall
In Gannosu, snow does not fall in April through November.Daylight
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 reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 5 during September translates into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Gannosu have in September?
What time are sunrise and sunset in September in Gannosu?
How many hours of sunshine does Gannosu have in September?
What is the UV index reading in September?
Average temperature in September
Gannosu, 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
Gannosu, 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
Gannosu, 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
Gannosu, 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
Gannosu, 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
Gannosu, 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
Gannosu, 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
Gannosu, 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
Gannosu, Japan
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in September: 8h and 1min
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
Gannosu, 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
Gannosu, 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
Gannosu, 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
Gannosu, 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).
