Stockholm Weather in September

Stockholm in September averages 17°C (63°F) during the day and 9°C (48°F) at night. Some rainfall is typical for this time of year.

Rainfall in Stockholm in September

Past climate data indicates that roughly 15 days will see rain, totalling around 56 mm (2.2 in) 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 Stockholm in September

September in Stockholm brings typical temperatures with highs around 17°C (63°F) and lows of 9°C (48°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. 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 Stockholm in September

With about 171 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Wind Speed in Stockholm in September

Average wind speeds reach 3 m/s (6 knots) in September, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.

Average water temperature in September

The water temperature is 15°C (59°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.

For Stockholm itself, June, July and August generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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• October
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For a detailed overview over the year and the best time to visit Sweden, check out our Stockholm's climate page.

Stockholm Temperature in September

Min Temperature 9°C (48°F)  

Max Temperature 17°C (63°F)  

Water Temperature 15°C (59°F)  

Chance of Rain 48%  

Precipitation 56 mm (2.2 in)  

Rainy days 15 days  

Humidity 78%  

Windspeed 3 m/s (6 knots)  

Sunshine 171 hours  

Percentage Sunshine  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Stockholm 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

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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

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Historical weather for Stockholm in September

Browse day-by-day weather records for Stockholm spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Stockholm historical weather extremes in September

Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Stockholm.

• The warmest day in September was on September 5, 2024, with a maximum of 27°C (81°F).
• Stockholm experienced its chilliest September day on September 28, 2003, reaching only 7°C (45°F).
• Stockholm registered its coldest September night on September 27, 1986, with temperatures dropping to -4°C (25°F).

What to Wear in Stockholm in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Expect water temperatures of around 15°C (59°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Stockholm in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

6/10

Walking

6/10

Barbeque

6/10

Camping

4/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Sweden, check out our Stockholm's climate page.

More climate data for Stockholm

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Stockholm climate overview or explore weather in Sweden.