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
With September's onset, the weather shows a temperature decrease, transitioning from a pleasant 20.7°C (69.3°F) in August to a refreshing 15.7°C (60.3°F). Throughout September, Horndal's nights cool down to an average of 8°C (46.4°F).Humidity
In Horndal, the average relative humidity in September is 79%.Rainfall
In Horndal, during September, the rain falls for 12.6 days and regularly aggregates up to 31mm (1.22") of precipitation. Throughout the year, there are 143.7 rainfall days, and 415mm (16.34") of precipitation is accumulated.Snowfall
In Horndal, snow does not fall in June through September.Daylight
In Horndal, the average length of the day in September is 12h and 52min.On the first day of September in Horndal, sunrise is at 05:50 and sunset at 19:58. On the last day of the month, sunrise is at 06:59 and sunset at 18:29 CEST.
Sunshine
In Horndal, the average sunshine in September is 7.7h.UV index
In Horndal, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 3 in September translates into this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Horndal have in September?
When are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Horndal, Sweden
- Average high temperature in September: 15.7°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (-1.8°C).
- Average low temperature in September: 8°C
The month with the highest average low temperature is July (11.9°C).
The coldest month (with the lowest average low temperature) is February (-5.7°C).
Average pressure in September
Horndal, Sweden
- Average pressure in September: 1013mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1007.3mbar).
Average wind speed in September
Horndal, Sweden
- Average wind speed in September: 10.4km/h
The windiest month (with the highest average wind speed) is December (11.6km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in September
Horndal, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (67%).
Average rainfall in September
Horndal, Sweden
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is July (46mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in September
Horndal, Sweden
- Average rainfall days in September: 12.6 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (5.7 days).
Average snowfall in September
Horndal, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is March (171mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Horndal, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (16.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Horndal, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 2h and 12min).
Average sunshine days in September
Horndal, Sweden
- Average sunshine days in September: 14.1 days
The month with the most sunshine days is September (14.1 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in September
Horndal, Sweden
- 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 January and February (UV index 1).
Average cloud cover in September
Horndal, Sweden
- Average cloud cover in September: 49
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 44).
Average visibility in September
Horndal, Sweden
- Average visibility in September: 8km
The months with the highest visibility are April, May, June, July and August (9km).
The months with the lowest visibility are January and February (6km).
