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 an enjoyable 19.6°C (67.3°F) to a still comfortable 16.4°C (61.5°F). During the September nights, Mjällby's temperature maintains an average close to the daytime highs, settling at a moderate 13.1°C (55.6°F).Humidity
In September, the average relative humidity in Mjällby is 78%.Rainfall
In Mjällby, in September, it is raining for 11.9 days, with typically 26mm (1.02") of accumulated precipitation. In Mjällby, during the entire year, the rain falls for 139.4 days and collects up to 346mm (13.62") of precipitation.Snowfall
May through October are months without snowfall in Mjällby.Daylight
In September, the average length of the day is 12h and 45min.On the first day of September in Mjällby, sunrise is at 06:06 and sunset at 19:55. On the last day of the month, sunrise is at 07:03 and sunset at 18:38 CEST.
Sunshine
The average sunshine in September in Mjällby is 8.3h.UV index
The average daily maximum UV index in September in Mjällby is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Undertake protective steps - Recommendations to avoid sunburn are issued. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Mjällby?
What is the average humidity in September in Mjällby?
How many days does it rain in September in Mjällby?
When it does not snow in Mjällby?
How many hours of daylight does Mjällby have in September?
When are sunrise and sunset in September in Mjällby?
How many hours of sunshine does Mjällby have in September?
What is the UV index reading in September in Mjällby?
Average temperature in September
Mjällby, Sweden
- Average high temperature in September: 16.4°C
The warmest month (with the highest average high temperature) is August (19.6°C).
The month with the lowest average high temperature is February (2.4°C).
- Average low temperature in September: 13.1°C
The month with the highest average low temperature is August (16.1°C).
The coldest month (with the lowest average low temperature) is February (0.1°C).
Average pressure in September
Mjällby, Sweden
- Average pressure in September: 1015.3mbar
The month with the highest atmospheric pressure is April (1015.6mbar).
The month with the lowest atmospheric pressure is December (1010.9mbar).
Average wind speed in September
Mjällby, Sweden
- Average wind speed in September: 21.9km/h
The windiest month (with the highest average wind speed) is December (25.6km/h).
The calmest month (with the lowest average wind speed) is June (18.3km/h).
Average humidity in September
Mjällby, Sweden
- Average humidity in September: 78%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, May and June (76%).
Average rainfall in September
Mjällby, Sweden
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is July (42mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in September
Mjällby, Sweden
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is November (15.2 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in September
Mjällby, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (44mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Mjällby, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (9.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mjällby, Sweden
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 30min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in September: 8h and 2min
The months with the most sunshine are June and August (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 6min).
Average sunshine days in September
Mjällby, Sweden
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is April (18.6 days).
The month with the least sunshine days is December (9.8 days).
Average UV index in September
Mjällby, Sweden
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Mjällby, Sweden
- Average cloud cover in September: 42
The month with the most cloud cover is December (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in September
Mjällby, Sweden
- Average visibility in September: 10km
The months with the highest visibility are March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, November and December (9km).
