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
The transition from August to September sees an average high-temperature of a still moderately hot 25.7°C (78.3°F), indicating a minor variance from the prior month. Throughout September, Aihama reports a steady low-temperature average of 23.2°C (73.8°F), slightly lower than its daytime counterpart.Humidity
The average relative humidity in September in Aihama is 79%.Rainfall
In Aihama, in September, during 15.5 rainfall days, 47mm (1.85") of precipitation is typically accumulated. Throughout the year, in Aihama, there are 157.4 rainfall days, and 525mm (20.67") of precipitation is accumulated.Snowfall
In Aihama, Japan, snow does not fall in March through December.Daylight
The average length of the day in September in Aihama is 12h and 24min.On the first day of the month, sunrise is at 05:13 and sunset at 18:07. On the last day of September, in Aihama, Japan, sunrise is at 05:34 and sunset at 17:26 JST.
Sunshine
In September, the average sunshine is 7.8h.UV index
In September, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 6 during September translates into the following recommendations:
Conform to measures and uphold sun safety traditions. Warding off skin and eye harm is necessary. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Aihama in September?
What is the average humidity in September in Aihama?
How many days does it rain in September in Aihama?
When it does not snow in Aihama?
What is the average length of the day in September in Aihama?
When are sunrise and sunset in September in Aihama?
How long on average sun shines in September in Aihama?
What is the UV index reading in September in Aihama?
Average temperature in September
Aihama, Japan
- Average high temperature in September: 25.7°C
The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is January (10.8°C).
- Average low temperature in September: 23.2°C
The month with the highest average low temperature is August (25.8°C).
The coldest months (with the lowest average low temperature) are January and February (7.2°C).
Average pressure in September
Aihama, Japan
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is November (1017.7mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in September
Aihama, Japan
- Average wind speed in September: 20.1km/h
The windiest month (with the highest average wind speed) is March (25.7km/h).
The calmest month (with the lowest average wind speed) is June (18.8km/h).
Average humidity in September
Aihama, Japan
- Average humidity in September: 79%
The month with the highest relative humidity is July (86%).
The month with the lowest relative humidity is January (62%).
Average rainfall in September
Aihama, Japan
- Average rainfall in September: 47mm
The wettest month (with the highest rainfall) is June (70mm).
The driest month (with the least rainfall) is February (26mm).
Average rainfall days in September
Aihama, Japan
- Average rainfall days in September: 15.5 days
The months with the highest number of rainy days are September and October (15.5 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in September
Aihama, Japan
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (1mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Aihama, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (0.7 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in September /
Average sunshine in September
Aihama, Japan
- Average daylight in September: 12h and 2min
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: 7h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in September
Aihama, Japan
- Average sunshine days in September: 11.5 days
The month with the most sunshine days is May (17.8 days).
The month with the least sunshine days is March (11.2 days).
Average UV index in September
Aihama, Japan
- Average UV index in September: 6
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in September
Aihama, Japan
- Average cloud cover in September: 40
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Aihama, Japan
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
