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 onset of September brings a small shift in high-temperatures, falling from a pleasant 20.8°C (69.4°F) in August to a refreshing 16.3°C (61.3°F). Throughout September, Hallstahammar encounters an average temperature drop to a chilly 8.8°C (47.8°F).Humidity
In Hallstahammar, the average relative humidity in September is 79%.Rainfall
In Hallstahammar, in September, it is raining for 11.5 days, with typically 29mm (1.14") of accumulated precipitation. In Hallstahammar, during the entire year, the rain falls for 145.4 days and collects up to 399mm (15.71") of precipitation.Snowfall
In Hallstahammar, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 51min.On the first day of the month, sunrise is at 05:52 and sunset at 19:57. On the last day of September, in Hallstahammar, sunrise is at 06:59 and sunset at 18:30 CEST.
Sunshine
The average sunshine in September is 8.1h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 3 in September translates into these instructions:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Hallstahammar in September?
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?
What is the average length of the day in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Hallstahammar have in September?
What is the UV index intensity in September?
Average temperature in September
Hallstahammar, Sweden
- Average high temperature in September: 16.3°C
The warmest month (with the highest average high temperature) is July (22°C).
The month with the lowest average high temperature is January (-1.3°C).
- Average low temperature in September: 8.8°C
The month with the highest average low temperature is July (12.3°C).
The coldest month (with the lowest average low temperature) is January (-5.3°C).
Average pressure in September
Hallstahammar, Sweden
- Average pressure in September: 1013.3mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1007.7mbar).
Average wind speed in September
Hallstahammar, Sweden
- Average wind speed in September: 11.8km/h
The windiest month (with the highest average wind speed) is December (13.7km/h).
The calmest month (with the lowest average wind speed) is August (10.7km/h).
Average humidity in September
Hallstahammar, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Hallstahammar, Sweden
- Average rainfall in September: 29mm
The wettest month (with the highest rainfall) is July (48mm).
The driest month (with the least rainfall) is April (20mm).
Average rainfall days in September
Hallstahammar, Sweden
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in September
Hallstahammar, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (138mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Hallstahammar, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Hallstahammar, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 12min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).
Average sunshine days in September
Hallstahammar, Sweden
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is September (14.8 days).
The month with the least sunshine days is December (10.5 days).
Average UV index in September
Hallstahammar, 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
Hallstahammar, Sweden
- Average cloud cover in September: 46
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are June, July and August (Cloud cover 42).
Average visibility in September
Hallstahammar, Sweden
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The month with the lowest visibility is February (7km).
