September weather forecastAimi, Japan
September
Weather in September
September, the first month of the autumn in Aimi, is still a warm month, with an average temperature ranging between max 28°C (82.4°F) and min 20.7°C (69.3°F).Temperature
As September begins, there is a minor decrease in the average high-temperature, softly falling from a tropical 32.5°C (90.5°F) in August to a warm 28°C (82.4°F). In September, Aimi experiences a temperature dip to an average of 20.7°C (69.3°F) at night.Heat index
In September, the average heat index is calculated to be a hot 31°C (87.8°F). If activity and exposure persist, they could induce fatigue, leading to possible heat cramps.One should be cognizant that the heat index values are tailored for shaded spots and mild winds. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The impact of weather is individual, with diverse individuals experiencing it differently due to variations in body mass, height, and activity levels. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.
Humidity
In Aimi, the average relative humidity in September is 74%.Rainfall
In Aimi, in September, during 13.5 rainfall days, 94mm (3.7") of precipitation is typically accumulated. In Aimi, during the entire year, the rain falls for 142.7 days and collects up to 863mm (33.98") of precipitation.Snowfall
March through November are months without snowfall.Daylight
In September, the average length of the day in Aimi is 12h and 24min.On the first day of September in Aimi, Japan, sunrise is at 05:24 and sunset at 18:18. On the last day of the month, sunrise is at 05:45 and sunset at 17:37 JST.
Sunshine
In September, the average sunshine in Aimi, Japan, is 8.5h.UV index
In Aimi, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: In September, a regular UV index of 5 translates into these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Aimi, Japan
- Average high temperature in September: 28°C
The warmest month (with the highest average high temperature) is August (32.5°C).
The month with the lowest average high temperature is January (8.1°C).
- Average low temperature in September: 20.7°C
The month with the highest average low temperature is August (24.7°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).
Average pressure in September
Aimi, Japan
- Average pressure in September: 1013.1mbar
The month with the highest atmospheric pressure is November (1019.1mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Aimi, Japan
- Average wind speed in September: 9.1km/h
The windiest months (with the highest average wind speed) are January and February (11.8km/h).
The calmest months (with the lowest average wind speed) are June and July (8.6km/h).
Average humidity in September
Aimi, Japan
- Average humidity in September: 74%
The month with the highest relative humidity is July (78%).
The month with the lowest relative humidity is February (68%).
Average rainfall in September
Aimi, Japan
- Average rainfall in September: 94mm
The wettest month (with the highest rainfall) is July (165mm).
The driest month (with the least rainfall) is January (25mm).
Average rainfall days in September
Aimi, Japan
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (19.2 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in September
Aimi, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is January (18mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).
Average snowfall days in September
Aimi, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.6 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
Aimi, 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 30min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in September
Aimi, Japan
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Aimi, Japan
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Aimi, Japan
- Average cloud cover in September: 40
The month with the most cloud cover is July (Cloud cover 46).
The month with the least cloud cover is November (Cloud cover 33).
Average visibility in September
Aimi, Japan
- Average visibility in September: 9km
The month with the highest visibility is February (10km).
The month with the lowest visibility is July (8km).
