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
September's arrival signals a moderate reduction in the average high-temperature, easing from an enjoyable 17.5°C (63.5°F) in August to a cool 12.6°C (54.7°F). In the month of September, Optand experiences an average low-temperature of 5.7°C (42.3°F).Humidity
In Optand, the average relative humidity in September is 80%.Rainfall
In Optand, during September, the rain falls for 13.5 days and regularly aggregates up to 37mm (1.46") of precipitation. Throughout the year, in Optand, Sweden, there are 122.4 rainfall days, and 377mm (14.84") of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Optand. September is the first month it typically snows. Throughout September, in the average 0.5 snowfall days, it receives 5mm (0.2") of snow. Throughout the year, there are 97.8 snowfall days, and 978mm (38.5") of snow is accumulated.Daylight
The average length of the day in September is 12h and 59min.On the first day of September in Optand, sunrise is at 05:48 and sunset at 20:13. On the last day of the month, sunrise is at 07:07 and sunset at 18:33 CEST.
Sunshine
In Optand, the average sunshine in September is 7.3h.UV index
In Optand, the average daily maximum UV index in September is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 2 in September translates into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Optand?
What is the average humidity in September in Optand?
How many days does it rain in September in Optand?
When does it start to snow in Optand?
How many hours of daylight does Optand have in September?
When is the sunrise / sunset in September in Optand?
How long on average sun shines in September in Optand?
What is the UV index intensity in September in Optand?
Average temperature in September
Optand, Sweden
- Average high temperature in September: 12.6°C
The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (-4.8°C).
- Average low temperature in September: 5.7°C
The month with the highest average low temperature is July (9.8°C).
The coldest months (with the lowest average low temperature) are January and February (-9.6°C).
Average pressure in September
Optand, Sweden
- Average pressure in September: 1011.7mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1005.8mbar).
Average wind speed in September
Optand, Sweden
- Average wind speed in September: 12.8km/h
The windiest month (with the highest average wind speed) is June (14.3km/h).
The calmest month (with the lowest average wind speed) is August (11.6km/h).
Average humidity in September
Optand, Sweden
- Average humidity in September: 80%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is June (67%).
Average rainfall in September
Optand, Sweden
- Average rainfall in September: 37mm
The wettest month (with the highest rainfall) is July (50mm).
The driest month (with the least rainfall) is February (18mm).
Average rainfall days in September
Optand, Sweden
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (4 days).
Average snowfall in September
Optand, Sweden
- Average snowfall in September: 5mm
The month with the highest snowfall is December (192mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Optand, Sweden
- Average snowfall days in September: 0.5 days
The month with the highest number of snowfall days is January (17 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Optand, Sweden
- Average daylight in September: 13h and 0min
The month with the longest days is June (Average daylight: 20h and 12min).
The month with the shortest days is December (Average daylight: 4h and 54min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in September
Optand, Sweden
- Average sunshine days in September: 12.8 days
The month with the most sunshine days is October (15.1 days).
The month with the least sunshine days is December (11.4 days).
Average UV index in September
Optand, Sweden
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Optand, Sweden
- Average cloud cover in September: 50
The months with the most cloud cover are January and December (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 45).
Average visibility in September
Optand, Sweden
- Average visibility in September: 9km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January and February (7km).
