Norrköping Weather in September
September in Norrköping typically sees daytime highs of 17°C (63°F) and nighttime lows of 9°C (48°F). Expect some rainfall during the month.
Rainfall in Norrköping in September
You can expect rain on around 14 days based on historical patterns, with 59 mm (2.3 in) average for the month. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.
Temperature in Norrköping in September
In September, Norrköping sees moderate temperatures, with highs of 17°C (63°F). Nights drop to around 9°C (48°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. With overnight lows of 9°C (48°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Norrköping in September
The city usually sees around 133 hours of sunlight, indicating a moderately sunny period.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July and August typically offer the best weather for Norrköping.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sweden, check out our Norrköping's climate page.
Norrköping Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
17°C (63°F)
Chance of Rain
47%
Precipitation
59 mm (2.3 in)
Rainy days
14 days
Sunshine
133 hours *
Percentage Sunshine
32% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Norrköping typically drop from around 18°C (64°F) at the start of September to approximately 14°C (57°F) by the end. Nights are cold, with lows typically ranging from 5°C (41°F) to 10°C (50°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Norrköping in September
Browse day-by-day weather records for Norrköping spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Norrköping historical weather extremes in September
According to our 49 years of weather records for Norrköping, the following extremes were recorded between 1976 and 2025.
- On September 5, 2024, temperatures climbed to 27°C (81°F), marking the warmest September day on record.
- On September 30, 1995, Norrköping saw its coldest September day with temperatures maxing out at 6°C (43°F).
- The lowest overnight temperature recorded in September was -4°C (25°F) (September 30, 2001).
Best Places in Sweden in September
Find out more about the weather in Sweden and which places have the best travel conditions in this month. See all of Sweden in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Norrköping in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Norrköping in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sweden, check out our Norrköping's climate page.
See the full Norrköping climate overview or explore weather in Sweden.
