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 shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a pleasant 20.6°C (69.1°F) to a refreshing 16°C (60.8°F). During September, Långholmen observes a consistent average nighttime temperature of 9.7°C (49.5°F).Humidity
The average relative humidity in September in Långholmen is 80%.Rainfall
In Långholmen, during September, the rain falls for 12 days and regularly aggregates up to 20mm (0.79") of precipitation. Throughout the year, there are 133 rainfall days, and 295mm (11.61") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Långholmen.Daylight
In September, the average length of the day in Långholmen, Sweden, is 12h and 50min.On the first day of the month, sunrise is at 05:45 and sunset at 19:49. On the last day of September, in Långholmen, sunrise is at 06:51 and sunset at 18:23 CEST.
Sunshine
In September, the average sunshine in Långholmen, Sweden, is 8.2h.UV index
In Långholmen, 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 UV index of 3 in September translates into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Långholmen?
What is the average humidity in September in Långholmen?
How many days does it rain in September in Långholmen?
When it does not snow in Långholmen?
Does it snow in Långholmen in September?
What is the average length of the day in September in Långholmen?
When is the sunrise / sunset in September in Långholmen?
How long on average sun shines in September in Långholmen?
What is the UV index reading in September in Långholmen?
Average temperature in September
Långholmen, Sweden
- Average high temperature in September: 16°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in September: 9.7°C
The month with the highest average low temperature is July (13.3°C).
The coldest month (with the lowest average low temperature) is January (-3.5°C).
Average pressure in September
Långholmen, Sweden
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in September
Långholmen, Sweden
- Average wind speed in September: 14.1km/h
The windiest month (with the highest average wind speed) is December (18.4km/h).
The calmest months (with the lowest average wind speed) are July and August (12.5km/h).
Average humidity in September
Långholmen, Sweden
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (88%).
The month with the lowest relative humidity is May (71%).
Average rainfall in September
Långholmen, Sweden
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is July (36mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in September
Långholmen, Sweden
- Average rainfall days in September: 12 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (5.6 days).
Average snowfall in September
Långholmen, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (76mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Långholmen, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Långholmen, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 30min).
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 6min).
The month with the least sunshine is December (Average sunshine: 2h and 30min).
Average sunshine days in September
Långholmen, Sweden
- Average sunshine days in September: 15 days
The month with the most sunshine days is May (15.8 days).
The months with the least sunshine days are February and August (12.8 days).
Average UV index in September
Långholmen, 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
Långholmen, Sweden
- Average cloud cover in September: 42
The months with the most cloud cover are January, February and December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Långholmen, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February, March, April, May, July, August, September, October, November and December (9km).
