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 brings a minor shift in the average high-temperature, adjusting from a pleasant 20.8°C (69.4°F) in August to a comfortable 16.3°C (61.3°F). The low-temperature averages to a frosty 8.8°C (47.8°F) during the nights of September.Humidity
The average relative humidity in September in Hallstahammar is 79%.Rainfall
In Hallstahammar, in September, it is raining for 11.5 days, with typically 29mm (1.14") of accumulated precipitation. Throughout the year, in Hallstahammar, there are 145.4 rainfall days, and 399mm (15.71") of precipitation is accumulated.Snowfall
In Hallstahammar, snow does not fall in June through September.Daylight
In September, the average length of the day in Hallstahammar is 12h and 51min.On the first day of September, sunrise is at 05:52 and sunset at 19:57. On the last day of the month, sunrise is at 06:59 and sunset at 18:30 CEST.
Sunshine
In September, the average sunshine is 8.1h.UV index
In Hallstahammar, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high daily UV index of 3 during September translates into the following directions:
Be vigilant - Suggestions to stave off sun damage are provided. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Frequently asked questions
What are September temperatures in Hallstahammar?
What is the average humidity in September in Hallstahammar?
How many days does it rain in September in Hallstahammar?
When it does not snow in Hallstahammar?
Does it snow in Hallstahammar in September?
What is the average length of the day in September in Hallstahammar?
When is the sunrise / sunset in September in Hallstahammar?
How long on average sun shines in September in Hallstahammar?
What is the UV index reading in September in Hallstahammar?
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).
Hallstahammar, Sweden
Weather forecast for your location
2. Allow the app to use your location
