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
Weather in September
Temperature
September indicates a minor shift in the average high-temperature, from August's agreeable 22.1°C (71.8°F) to an enjoyable 17.5°C (63.5°F). Throughout September, Nottwil experiences a low-temperature average of 7.5°C (45.5°F).Humidity
In September, the average relative humidity in Nottwil, Switzerland, is 80%.Rainfall
September is the month with the least rainfall in Nottwil, Switzerland. Rain falls for 14.3 days and accumulates 52mm (2.05") of precipitation.Snowfall
In Nottwil, Switzerland, snow does not fall in June through September.Daylight
In Nottwil, the average length of the day in September is 12h and 34min.On the first day of September in Nottwil, sunrise is at 06:47 and sunset at 20:07. On the last day of the month, sunrise is at 07:25 and sunset at 19:08 CEST.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Nottwil in September?
What is the average humidity in September in Nottwil?
What is the driest month in Nottwil?
How many days does it rain in September in Nottwil?
When it does not snow in Nottwil?
Does it snow in Nottwil in September?
How many hours of daylight does Nottwil have in September?
When are sunrise and sunset in September in Nottwil?
How long on average sun shines in September in Nottwil?
What is the UV index intensity in September in Nottwil?
Average temperature in September
Nottwil, Switzerland
- Average high temperature in September: 17.5°C
The warmest month (with the highest average high temperature) is August (22.1°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is August (10.9°C).
The coldest month (with the lowest average low temperature) is February (-4.9°C).
Average pressure in September
Nottwil, Switzerland
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Nottwil, Switzerland
- Average wind speed in September: 6.3km/h
The windiest month (with the highest average wind speed) is December (8.3km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in September
Nottwil, Switzerland
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in September
Nottwil, Switzerland
- Average rainfall in September: 52mm
The wettest month (with the highest rainfall) is July (121mm).
The driest month (with the least rainfall) is September (52mm).
Average rainfall days in September
Nottwil, Switzerland
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is May (21.5 days).
The month with the least rainy days is October (11.2 days).
Average snowfall in September
Nottwil, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (169mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Nottwil, Switzerland
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Nottwil, Switzerland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Nottwil, Switzerland
- Average sunshine days in September: 13 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is June (7.3 days).
Average UV index in September
Nottwil, Switzerland
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Nottwil, Switzerland
- Average cloud cover in September: 34
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Nottwil, Switzerland
- Average visibility in September: 8km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (8km).
The month with the lowest visibility is January (7km).
Nottwil, Switzerland
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