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
The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from an enjoyable 19.5°C (67.1°F) to a still refreshing 15.2°C (59.4°F). Rottneros, in September, experiences an average temperature of 7.5°C (45.5°F) at night.Humidity
The average relative humidity in September is 81%.Rainfall
In Rottneros, during September, the rain falls for 13.4 days and regularly aggregates up to 40mm (1.57") of precipitation. Throughout the year, there are 154.2 rainfall days, and 526mm (20.71") of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Rottneros, the average length of the day in September is 12h and 51min.On the first day of September, sunrise is at 06:04 and sunset at 20:10. On the last day of the month, sunrise is at 07:11 and sunset at 18:42 CEST.
Sunshine
The average sunshine in September is 7.4h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September in Rottneros?
How much does it rain in Rottneros in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Rottneros have in September?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Rottneros, Sweden
- Average high temperature in September: 15.2°C
The warmest month (with the highest average high temperature) is July (21.1°C).
The month with the lowest average high temperature is January (-1.8°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is July (11.4°C).
The coldest month (with the lowest average low temperature) is February (-6.3°C).
Average pressure in September
Rottneros, Sweden
- Average pressure in September: 1012.9mbar
The months with the highest atmospheric pressure are April and May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1007.9mbar).
Average wind speed in September
Rottneros, Sweden
- Average wind speed in September: 10.5km/h
The windiest month (with the highest average wind speed) is January (10.8km/h).
The calmest month (with the lowest average wind speed) is August (9.4km/h).
Average humidity in September
Rottneros, Sweden
- Average humidity in September: 81%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Rottneros, Sweden
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is May (55mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in September
Rottneros, Sweden
- Average rainfall days in September: 13.4 days
The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is February (6.9 days).
Average snowfall in September
Rottneros, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is January (183mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Rottneros, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (15.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rottneros, Sweden
- Average daylight in September: 12h and 5min
The month with the longest days is June (Average daylight: 18h and 36min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 2h and 54min).
Average sunshine days in September
Rottneros, Sweden
- Average sunshine days in September: 14.3 days
The month with the most sunshine days is September (14.3 days).
The month with the least sunshine days is February (10.1 days).
Average UV index in September
Rottneros, 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, November and December (UV index 1).
Average cloud cover in September
Rottneros, Sweden
- Average cloud cover in September: 50
The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is June (Cloud cover 45).
Average visibility in September
Rottneros, Sweden
- Average visibility in September: 8km
The months with the highest visibility are April, May, June and July (9km).
The months with the lowest visibility are January and February (6km).
