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
The shift from August to September coincides with a small decrease in the average high-temperature, down to a moderate 15.9°C (60.6°F) from an enjoyable 19°C (66.2°F). September nights anticipate an average temperature of 11.3°C (52.3°F), a modest decline from the daytime.Humidity
The average relative humidity in September is 79%.Rainfall
In September, in Alleby, Sweden, the rain falls for 16.7 days. Throughout September, 52mm (2.05") of precipitation is accumulated. In Alleby, during the entire year, the rain falls for 174 days and collects up to 572mm (22.52") of precipitation.Snowfall
Months with snowfall are January through May, September through December. September is the first month it typically snows in Alleby. Throughout September, in the average 0.1 snowfall days, it receives 1mm (0.04") of snow. Throughout the year, in Alleby, there are 29.8 snowfall days, and 211mm (8.31") of snow is accumulated.Daylight
In September, the average length of the day in Alleby is 12h and 47min.On the first day of September, sunrise is at 06:14 and sunset at 20:10. On the last day of the month, sunrise is at 07:15 and sunset at 18:49 CEST.
Sunshine
In September, the average sunshine in Alleby is 7.7h.UV index
The average daily maximum UV index in September in Alleby, Sweden, is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
What is the temperature in September in Alleby?
What is the average humidity in September in Alleby?
How much does it rain in Alleby in September?
When does it start snowing in Alleby?
How many hours of daylight does Alleby have in September?
When are sunrise and sunset in September in Alleby?
How many hours of sunshine does Alleby have in September?
What is the UV index reading in September in Alleby?
Average temperature in September
Alleby, Sweden
- Average high temperature in September: 15.9°C
The warmest month (with the highest average high temperature) is July (19.4°C).
The month with the lowest average high temperature is February (1.6°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is February (-1.3°C).
Average pressure in September
Alleby, Sweden
- Average pressure in September: 1013.8mbar
The month with the highest atmospheric pressure is April (1014.7mbar).
The month with the lowest atmospheric pressure is December (1008.8mbar).
Average wind speed in September
Alleby, Sweden
- Average wind speed in September: 18km/h
The windiest month (with the highest average wind speed) is December (21.2km/h).
The calmest month (with the lowest average wind speed) is June (15.3km/h).
Average humidity in September
Alleby, Sweden
- Average humidity in September: 79%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (73%).
Average rainfall in September
Alleby, Sweden
- Average rainfall in September: 52mm
The wettest month (with the highest rainfall) is August (69mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in September
Alleby, Sweden
- Average rainfall days in September: 16.7 days
The month with the highest number of rainy days is August (19.3 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in September
Alleby, Sweden
- Average snowfall in September: 1mm
The month with the highest snowfall is January (62mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Alleby, Sweden
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (9.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Alleby, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 0min).
The month with the shortest days is December (Average daylight: 6h and 42min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in September
Alleby, Sweden
- Average sunshine days in September: 10.5 days
The month with the most sunshine days is April (15.8 days).
The month with the least sunshine days is August (9 days).
Average UV index in September
Alleby, Sweden
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in September
Alleby, Sweden
- Average cloud cover in September: 47
The months with the most cloud cover are January, February, November and December (Cloud cover 63).
The months with the least cloud cover are June and July (Cloud cover 38).
Average visibility in September
Alleby, Sweden
- Average visibility in September: 10km
The months with the highest visibility are April, May, June, July, August and September (10km).
The months with the lowest visibility are January, February, March, October, November and December (9km).
Alleby, Sweden
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