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
As August makes way for September, Aathal's average high-temperature eases from a pleasant 22.5°C (72.5°F) to an enjoyable 17.9°C (64.2°F). During September, Aathal observes a consistent average nighttime temperature of 7.4°C (45.3°F).Humidity
The average relative humidity in September in Aathal, Switzerland, is 82%.Rainfall
In Aathal, in September, it is raining for 12.7 days, with typically 35mm (1.38") of accumulated precipitation. Throughout the year, in Aathal, there are 151 rainfall days, and 623mm (24.53") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Aathal, Switzerland.Daylight
The average length of the day in September in Aathal is 12h and 34min.On the first day of the month, sunrise is at 06:44 and sunset at 20:04. On the last day of September, sunrise is at 07:23 and sunset at 19:06 CEST.
Sunshine
In Aathal, the average sunshine in September is 8.7h.UV index
In Aathal, the average daily maximum UV index in September is 3. 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 maximum UV index, 3 during September, leads to the following recommendations:
Adopt protective measures - It is advised to guard against sun damage. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Aathal?
What is the average humidity in September in Aathal?
How many days does it rain in September in Aathal?
When it does not snow in Aathal?
Does it snow in Aathal in September?
What is the average length of the day in September in Aathal?
When is the sunrise / sunset in September in Aathal?
How long on average sun shines in September in Aathal?
How high is the UV index in September in Aathal?
Average temperature in September
Aathal, Switzerland
- Average high temperature in September: 17.9°C
The warmest months (with the highest average high temperature) are July and August (22.5°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in September: 7.4°C
The month with the highest average low temperature is August (11.1°C).
The coldest months (with the lowest average low temperature) are January and February (-4.3°C).
Average pressure in September
Aathal, Switzerland
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Aathal, Switzerland
- Average wind speed in September: 6.1km/h
The windiest month (with the highest average wind speed) is March (8km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).
Average humidity in September
Aathal, Switzerland
- Average humidity in September: 82%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is July (78%).
Average rainfall in September
Aathal, Switzerland
- Average rainfall in September: 35mm
The wettest month (with the highest rainfall) is May (82mm).
The driest month (with the least rainfall) is November (31mm).
Average rainfall days in September
Aathal, Switzerland
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in September
Aathal, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is January (202mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Aathal, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Aathal, Switzerland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Aathal, Switzerland
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Aathal, Switzerland
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in September
Aathal, Switzerland
- Average cloud cover in September: 39
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Aathal, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (8km).
The months with the lowest visibility are January and February (7km).
