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
September heralds a minor drop in average high-temperature, sliding from August's tropical 30.3°C (86.5°F) to a warm 26.5°C (79.7°F). The September average low temperature, marginally lower than the daytime high, records at a pleasant 21.8°C (71.2°F).Humidity
The average relative humidity in September is 73%.Rainfall
In Atsu, Japan, in September, during 9.6 rainfall days, 30mm (1.18") of precipitation is typically accumulated. In Atsu, during the entire year, the rain falls for 100.2 days and collects up to 317mm (12.48") of precipitation.Snowfall
In Atsu, snow does not fall in March through December.Daylight
The average length of the day in September in Atsu is 12h and 24min.On the first day of the month, sunrise is at 05:37 and sunset at 18:30. On the last day of September, in Atsu, sunrise is at 05:57 and sunset at 17:49 JST.
Sunshine
The average sunshine in September in Atsu, Japan, is 9h.UV index
In September, the average daily maximum UV index in Atsu is 6. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 6 in September translates into the following instructions:
Resist extreme sun exposure. Guarding against solar damage is essential. UV radiation from the sun is at its strongest between 10 a.m. and 4 p.m. Try to limit direct exposure during these hours. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Atsu?
What is the average humidity in September in Atsu?
How many days does it rain in September in Atsu?
When it does not snow in Atsu?
What is the average length of the day in September in Atsu?
What time are sunrise and sunset in September in Atsu?
How long on average sun shines in September in Atsu?
What is the UV index reading in September in Atsu?
Average temperature in September
Atsu, Japan
- Average high temperature in September: 26.5°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 (8.7°C).
- Average low temperature in September: 21.8°C
The month with the highest average low temperature is August (25.6°C).
The coldest month (with the lowest average low temperature) is January (4.4°C).
Average pressure in September
Atsu, Japan
- Average pressure in September: 1012.6mbar
The months with the highest atmospheric pressure are January and February (1020.4mbar).
The month with the lowest atmospheric pressure is June (1008.5mbar).
Average wind speed in September
Atsu, Japan
- Average wind speed in September: 11.4km/h
The windiest month (with the highest average wind speed) is January (18.3km/h).
The calmest month (with the lowest average wind speed) is June (10.1km/h).
Average humidity in September
Atsu, Japan
- Average humidity in September: 73%
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is March (67%).
Average rainfall in September
Atsu, Japan
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is November (10mm).
Average rainfall days in September
Atsu, Japan
- Average rainfall days in September: 9.6 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in September
Atsu, Japan
- Average snowfall in September: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in September
Atsu, Japan
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (1.3 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
Atsu, 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: 9h and 54min).
- Average sunshine in September: 9h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Atsu, Japan
- Average sunshine days in September: 18.7 days
The month with the most sunshine days is May (23.5 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in September
Atsu, Japan
- Average UV index in September: 6
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
Atsu, Japan
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in September
Atsu, 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).
