September weather forecastLännersta, Sweden
September
Weather in September
September, the first month of the autumn in Lännersta, is still a mild month, with an average temperature varying between 15.5°C (59.9°F) and 10.5°C (50.9°F).Temperature
As September begins, there is a minor decrease in the average high-temperature, softly falling from an enjoyable 19.8°C (67.6°F) in August to a mild 15.5°C (59.9°F). Lännersta marks an average drop to a fresh 10.5°C (50.9°F) during nighttime in September, following the high of the day.Humidity
The average relative humidity in September in Lännersta is 79%.Rainfall
In Lännersta, during September, the rain falls for 11.8 days and regularly aggregates up to 20mm (0.79") of precipitation. In Lännersta, during the entire year, the rain falls for 132.1 days and collects up to 289mm (11.38") of precipitation.Snowfall
In Lännersta, snow does not fall in June through September.Daylight
The average length of the day in September in Lännersta is 12h and 50min.On the first day of the month, sunrise is at 05:45 and sunset at 19:48. On the last day of September, sunrise is at 06:50 and sunset at 18:22 CEST.
Sunshine
In September, the average sunshine in Lännersta is 8.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 3 in September suggests the following recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lännersta, Sweden
- Average high temperature in September: 15.5°C
The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (-0.1°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is July (13.9°C).
The coldest month (with the lowest average low temperature) is January (-3°C).
Average pressure in September
Lännersta, Sweden
- Average pressure in September: 1013.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in September
Lännersta, Sweden
- Average wind speed in September: 16km/h
The windiest month (with the highest average wind speed) is December (20.9km/h).
The calmest month (with the lowest average wind speed) is July (13.8km/h).
Average humidity in September
Lännersta, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January, February, November and December (86%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Lännersta, Sweden
- Average rainfall in September: 20mm
The wettest month (with the highest rainfall) is July (35mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in September
Lännersta, Sweden
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Lännersta, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (82mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Lännersta, Sweden
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lännersta, Sweden
- Average daylight in September: 12h and 48min
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 24min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 36min).
Average sunshine days in September
Lännersta, Sweden
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is December (11 days).
Average UV index in September
Lännersta, 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
Lännersta, Sweden
- Average cloud cover in September: 41
The month with the most cloud cover is February (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Lännersta, Sweden
- Average visibility in September: 10km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
