Stockholm Weather in September
Sweden · Humid Continental climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
September in Stockholm sees average temperatures ranging from a low of 9.6°C (49.3°F) to a high of 16.8°C (62.2°F), with a mean of 13.0°C (55.4°F). Compared to the annual average of 7.7°C (45.9°F), this month is 5.3°C warmer than the yearly norm. Precipitation averages 43.1mm, making it approximately 12.0mm drier than the monthly average of 55.0mm. The city receives an average of 8.1 hours of sunshine per day during September, with relative humidity averaging 81.1%. Wind speeds reach an average maximum of 16.0 km/h. For travelers, this month offers a temperature experience in Stockholm, with drier-than-average conditions compared to the rest of the year.
There's something about Stockholm in late June that's almost pagan — the sun barely sets and the entire city drifts outdoors. Midsomar celebrations turn parks into flower-crowned parties, and Swedes who seemed reserved all winter suddenly become convivial. I joined a crayfish party one August and the warmth wasn't just the schnapps. Winter is its own character: 5 hours of daylight, candle-lit cafés, and a hygge-like quality locals call mys. November is the gloomy exception — I'd skip it. February brings real cold but also snow that makes the archipelago feel otherworldly.
September vs Adjacent Months
| Metric | August | September | October |
|---|---|---|---|
| Mean Temp | 17.1°C (62.8°F) | 13.0°C (55.4°F) | 8.3°C (46.9°F) |
| Rainfall | 80.0mm | 43.1mm | 68.4mm |
| Sunshine | 11.2 hrs | 8.1 hrs | 5.4 hrs |
| Humidity | 76.7% | 81.1% | 84.9% |
| Wind | 16.1 km/h | 16.0 km/h | 18.4 km/h |
| Rainy Days | 19.0 | 14.0 | 17.4 |
| Snowfall | 0.0 cm | 0.0 cm | 1.1 cm |
Seasonal Context
September falls in Autumn in the Northern Hemisphere. Autumn sees temperatures gradually cooling from summer highs. For travelers visiting Stockholm in September, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Stockholm in September?
The average temperature in Stockholm during September ranges from 9.6°C (49.3°F) to 16.8°C (62.2°F), with a mean of 13.0°C (55.4°F).
How much does it rain in Stockholm in September?
Stockholm receives an average of 43.1mm of precipitation in September, spread across approximately 14.0 rainy days.
What should I pack for Stockholm in September?
Based on September weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is September a good time to visit Stockholm?
September is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Stockholm
Cities with Similar September Climate (Humid Continental)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 59.33°, 18.07°. Timezone: Europe/Stockholm. Last updated: 2026-07-30.