Stockholm weather in September
In September, Stockholm has an average high of 17 °C62 °F and an average low of 9 °C49 °F, with about 55 mm2.1 in of precipitation. It is the 4th warmest month of the year and ranks 6th for precipitation.
How September compares with other months
Compared with August, September is 4.6 °C8.2 °F cooler on average and drier by 17 mm0.7 in. Compared with October, September is 6 °C10.7 °F warmer on average and drier by 9 mm0.3 in. Daylight lasts about 12.7 hours around the middle of the month. Average relative humidity is 82% and the average cloud amount 72%.
Is September a good time to visit Stockholm?
September is not among the most comfortable months by our comfort score: it is cool (average high 17 °C62 °F). The most comfortable months in Stockholm are June–August.
What to wear in September
For Stockholm in September, pack long sleeves, a sweater and a medium jacket.
September in nearby places
Other months in Stockholm
- January−1 °C30 °F / −5 °C23 °F
- February0 °C32 °F / −5 °C23 °F
- March3 °C38 °F / −3 °C27 °F
- April9 °C49 °F / 1 °C34 °F
- May15 °C59 °F / 6 °C43 °F
- June20 °C67 °F / 11 °C52 °F
- July23 °C73 °F / 14 °C58 °F
- August22 °C71 °F / 13 °C56 °F
- September17 °C62 °F / 9 °C49 °F
- October10 °C49 °F / 4 °C40 °F
- November4 °C40 °F / 1 °C34 °F
- December1 °C33 °F / −3 °C27 °F
Frequently asked questions
How warm is Stockholm in September?
In September the average high in Stockholm is 17 °C (62 °F) and the average low is 9 °C (49 °F).
Does it rain a lot in Stockholm in September?
On average about 55 mm (2.1 in) of precipitation falls in September; it ranks 6th of the 12 months.
Is September the warmest month in Stockholm?
No. The warmest month in Stockholm is July, with an average high of 23 °C (73 °F). The coldest month is February, with an average low of -5 °C (23 °F).
How long is the day in Stockholm in September?
In the middle of September the day in Stockholm lasts about 12.7 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Stockholm in September?
The average relative humidity in September is about 82%. This is a long-term average for the whole day.
How cloudy is Stockholm in September?
On average about 72% of the sky is covered by cloud in September. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.