September weather forecastNorrköping, Sweden
September
Weather in September
September walks Norrkoping towards Fall, with a distinguishable change in weather conditions. Temperatures decreases are notable, especially with a significant low of 9.3°C (48.7°F). The rainfall dips to 18mm (0.71"), signalling the end of the city's rainy season. The fall of autumn leaves paint a colourful scenery across the city, against the backdrop of clear blue skies brushed with white clouds. The amount of daylight starts to shorten, yet the city still benefits from fair visibility and sufficient sunlight.Temperature
Start of September in Norrköping brings a slight shift in the average high-temperature, dipping a bit from August's agreeable 21.2°C (70.2°F) to a refreshing 16.7°C (62.1°F). During September, Norrköping consistently records a temperature low averaging a chilly 9.3°C (48.7°F).Humidity
In September, the average relative humidity in Norrköping is 79%.Rainfall
In Norrköping, in September, during 9.9 rainfall days, 18mm (0.71") of precipitation is typically accumulated. In Norrköping, during the entire year, the rain falls for 119.9 days and collects up to 244mm (9.61") of precipitation.Snowfall
June through September are months without snowfall.Daylight
The average length of the day in September is 12h and 49min.On the first day of the month, sunrise is at 05:55 and sunset at 19:55. On the last day of September, in Norrköping, sunrise is at 06:58 and sunset at 18:31 CEST.
Sunshine
The average sunshine in September is 8.1h.UV index
In Norrköping, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In September, the maximum UV index of 3 suggests these recommendations:
Guard yourself - An obligation to protect skin and eyes from harm exists. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Norrköping, Sweden
- Average high temperature in September: 16.7°C
The warmest month (with the highest average high temperature) is July (22.5°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in September: 9.3°C
The month with the highest average low temperature is July (12.5°C).
The coldest months (with the lowest average low temperature) are January and February (-3.8°C).
Average pressure in September
Norrköping, Sweden
- Average pressure in September: 1013.8mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008.6mbar).
Average wind speed in September
Norrköping, Sweden
- Average wind speed in September: 12.5km/h
The windiest month (with the highest average wind speed) is December (13.6km/h).
The calmest month (with the lowest average wind speed) is August (11.1km/h).
Average humidity in September
Norrköping, Sweden
- Average humidity in September: 79%
The months with the highest relative humidity are January, February and November (90%).
The month with the lowest relative humidity is May (69%).
Average rainfall in September
Norrköping, Sweden
- Average rainfall in September: 18mm
The wettest month (with the highest rainfall) is July (36mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Norrköping, Sweden
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is July (14.5 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in September
Norrköping, Sweden
- Average snowfall in September: 0mm
The month with the highest snowfall is February (60mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Norrköping, Sweden
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Norrköping, Sweden
- Average daylight in September: 12h and 48min
The month with the longest days is June (Average daylight: 18h and 12min).
The month with the shortest days is December (Average daylight: 6h and 24min).
- Average sunshine in September: 8h and 6min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in September
Norrköping, Sweden
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is October (17.6 days).
The month with the least sunshine days is July (13.7 days).
Average UV index in September
Norrköping, Sweden
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January and March (UV index 1).
Average cloud cover in September
Norrköping, Sweden
- Average cloud cover in September: 45
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are June, July and August (Cloud cover 41).
Average visibility in September
Norrköping, Sweden
- Average visibility in September: 9km
The months with the highest visibility are April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, March, November and December (8km).
