Climate averages 1991–2020
Norrköping weather
in September.
A mild, moderately wet month: the 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Norrköping: daytime highs average 16.0°C and nights cool to about 10.2°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 52 mm of rain on roughly 9 days, which makes September a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 54 min on an average September day.
The nearest other city in this atlas is Linköping (38 km away). In September its highs average 15.9°C, about as warm as Norrköping, with 53 mm of rain.
Among the 21 cities listed in Sweden, Norrköping ranks 6th of 21 for the warmest September highs and joint 8th of 21 for the driest September (rainfall, lowest first). The mean September high of those 21 cities is 15.5°C; Norrköping is 0.5°C warmer than that mean.
From September to October, average highs fall by 6.1°C to 9.9°C, and monthly rainfall falls from 52 mm to 51 mm.
The annual picture
September in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Norrköping climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 0.6°C-3.3°C | -3.3°C | 35 | 8.3 | 7.17 h |
| February | 1.2°C-3.7°C | -3.7°C | 32 | 7.6 | 9.39 h |
| March | 4.7°C-1.8°C | -1.8°C | 29 | 7.7 | 11.812 h |
| April | 10.3°C2.2°C | 2.2°C | 35 | 7.7 | 14.414 h |
| May | 15.5°C7.2°C | 7.2°C | 49 | 9.6 | 16.817 h |
| June | 19.4°C11.6°C | 11.6°C | 67 | 11.6 | 18.218 h |
| July | 21.7°C14.4°C | 14.4°C | 76 | 12.2 | 17.618 h |
| August | 20.7°C14.1°C | 14.1°C | 69 | 12.1 | 15.415 h |
| September, selected | 16.0°C10.2°C | 10.2°C | 52 | 9.0 | 12.913 h |
| October | 9.9°C5.6°C | 5.6°C | 51 | 10.2 | 10.310 h |
| November | 4.9°C1.7°C | 1.7°C | 48 | 10.2 | 7.98 h |
| December | 1.8°C-1.7°C | -1.7°C | 45 | 10.2 | 6.56 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Linköping in SeptemberSweden · 38 kmHigh 15.9°C · Low 9.6°C · 53 mm rain
- Örebro in SeptemberSweden · 94 kmHigh 15.6°C · Low 9.4°C · 55 mm rain
- Södertälje in SeptemberSweden · 106 kmHigh 15.9°C · Low 9.8°C · 51 mm rain
- Västerås in SeptemberSweden · 116 kmHigh 15.8°C · Low 9.1°C · 52 mm rain
- Huddinge in SeptemberSweden · 126 kmHigh 15.5°C · Low 10.5°C · 50 mm rain
- Haninge in SeptemberSweden · 130 kmHigh 15.1°C · Low 10.4°C · 51 mm rain
- Stockholm in SeptemberSweden · 136 kmHigh 15.5°C · Low 10.5°C · 50 mm rain
- Sollentuna in SeptemberSweden · 137 kmHigh 15.6°C · Low 9.9°C · 50 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Norrköping) is explained once on the Norrköping year overview and on the Sources, method and limits page.