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
Persön's weather subtly changes with the onset of September, barely falling from a refreshing 16.6°C (61.9°F) in August to a fresh 12.5°C (54.5°F). The month of September in Persön is marked by an average minimum temperature of 8.6°C (47.5°F), slightly cooler than its daytime counterpart.Humidity
In September, the average relative humidity is 79%.Rainfall
In Persön, in September, during 12.5 rainfall days, 36mm (1.42") of precipitation is typically accumulated. Throughout the year, there are 110.8 rainfall days, and 409mm (16.1") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Persön, Sweden.Daylight
In September, the average length of the day is 13h and 6min.On the first day of September in Persön, sunrise is at 05:09 and sunset at 19:52. On the last day of the month, sunrise is at 06:40 and sunset at 18:01 CEST.
Sunshine
In September, the average sunshine is 7.3h.UV index
In Persön, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 3 transforms into these recommendations:
Take precautions - Protection against sunburn is recommended. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Persön?
What is the average humidity in September in Persön?
How much does it rain in Persön in September?
When it does not snow in Persön?
Does it snow in Persön in September?
What is the average length of the day in September in Persön?
When is the sunrise / sunset in September in Persön?
How many hours of sunshine does Persön have in September?
How high is the UV index in September in Persön?
Average temperature in September
Persön, Sweden
- Average high temperature in September: 12.5°C
The warmest month (with the highest average high temperature) is July (17.3°C).
The month with the lowest average high temperature is January (-5.7°C).
- Average low temperature in September: 8.6°C
The month with the highest average low temperature is July (13°C).
The coldest month (with the lowest average low temperature) is February (-10.6°C).
Average pressure in September
Persön, Sweden
- Average pressure in September: 1010.9mbar
The month with the highest atmospheric pressure is May (1014mbar).
The month with the lowest atmospheric pressure is December (1004.8mbar).
Average wind speed in September
Persön, Sweden
- Average wind speed in September: 16.4km/h
The windiest month (with the highest average wind speed) is December (17.3km/h).
The calmest month (with the lowest average wind speed) is April (13km/h).
Average humidity in September
Persön, Sweden
- Average humidity in September: 79%
The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is June (70%).
Average rainfall in September
Persön, Sweden
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is December (46mm).
The driest month (with the least rainfall) is April (25mm).
Average rainfall days in September
Persön, Sweden
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is August (13.9 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in September
Persön, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is December (178mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Persön, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Persön, Sweden
- Average daylight in September: 13h and 1min
The month with the longest days is July (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 3h and 24min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 18min).
Average sunshine days in September
Persön, Sweden
- Average sunshine days in September: 15.1 days
The months with the most sunshine days are June and October (16.5 days).
The month with the least sunshine days is December (11.6 days).
Average UV index in September
Persön, Sweden
- Average UV index in September: 3
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Persön, Sweden
- Average cloud cover in September: 47
The month with the most cloud cover is January (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in September
Persön, Sweden
- Average visibility in September: 10km
The months with the highest visibility are June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March and April (7km).
