Södermalm, Sweden — Weather in September 2026

Climate Overview

Södermalm, Sweden in September has mild conditions, with highs averaging 16.3°C (61°F) and noticeably cooler mornings. Sea temperature stays cool at 19.5°C (67°F).

This month falls at the beginning of Autumn.

Daily highs in September gradually drop from around 18°C (64°F) at the start to 14°C (57°F) by month's end.

September sees fairly even rainfall, totalling about 44 mm across the month.

Expect around 9.9h of sunshine at the start of September, decreasing to 7.6h by the end.

The warmest days tend to fall around the 7th, averaging 18.4°C (65°F).

Compared to August, this month is about 4°C cooler with 3 fewer rainy days. Temperatures begin dropping heading into October.

Monthly September Averages

Temperature

16°C / 11°C

Feels Like

14°C / 9°C

Rain

8 days · 44 mm

Sunshine

8.7h / day

Humidity

80% — Very Humid

Wind

18 km/h

Wind Direction

SW (218°)

Gusts

39 km/h

Daylight

12.8 h

Cloud Cover

64%

Clear Sky Days

1.6

UV Index

3.2 — Moderate

Sea Temperature

20°C

Dew Point

10°C — Comfortable

Moon Phase

Waxing Crescent · 11%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 06:17

Daylight 12.9h

Sunset 19:12

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	1°C / -3°C	-4°C / -8°C	9days (44 mm) Wet	2h Poor	86% Very Muggy	0.5 Low	Poor	View Details
February	2°C / -2°C	-3°C / -7°C	8days (32 mm) Wet	4.4h Fair	83% Humid	1.1 Low	Poor	View Details
March	5°C / -1°C	0°C / -5°C	7days (32 mm) Good	6.9h Fair	78% Humid	2.5 Moderate	Poor	View Details
April	9°C / 2°C	5°C / -2°C	7days (29 mm) Good	10.2h Excellent	71% Muggy	3.4 Moderate	Poor	View Details
May	14°C / 7°C	12°C / 4°C	8days (40 mm) Wet	12.8h Excellent	69% Muggy	5 Moderate	Fair	View Details
June best	20°C / 13°C	18°C / 11°C	9days (51 mm) Wet	14.2h Excellent	70% Muggy	5.5 High	Good	View Details
July best	21°C / 15°C	20°C / 14°C	12days (62 mm) Wet	13.7h Excellent	73% Muggy	5.4 High	Excellent	View Details
August best	20°C / 14°C	19°C / 13°C	11days (67 mm) Wet	11.3h Excellent	76% Humid	4.3 Moderate	Excellent	View Details
September best	16°C / 11°C	14°C / 9°C	8days (44 mm) Wet	8.7h Good	80% Humid	3.2 Moderate	Good	View Details
October	10°C / 6°C	7°C / 3°C	11days (57 mm) Wet	4.9h Fair	83% Humid	1.6 Low	Poor	View Details
November	5°C / 2°C	2°C / -2°C	9days (44 mm) Wet	2.6h Poor	88% Very Muggy	0.7 Low	Poor	View Details
December	2°C / -1°C	-2°C / -5°C	12days (46 mm) Wet	1.2h Poor	88% Very Muggy	0.3 Low	Poor	View Details

What to Wear

Bundle up with a warm coat, scarf, and closed-toe shoes. Thermal layers underneath give flexibility between indoors and outdoors.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Layered clothingLight jacketUmbrellaComfortable walking shoes

Frequently Asked Questions

Expand all

Is September a good time to visit Södermalm?

September is typically good for visiting Södermalm, with average highs of 16°C (61°F) and around 8 rainy days. Södermalm, Sweden in September has mild conditions, with highs averaging 16.3°C (61°F) and noticeably cooler mornings. S

Does it rain a lot in Södermalm in September?

Södermalm typically sees around 8 rainy days in September with 44 mm (1.7 in) of total rainfall. An umbrella should suffice.

Does it get cold at night in Södermalm in September?

Nights in Södermalm during September are cool at around 11°C (52°F). Bring a jacket or sweater for evenings.

What should I pack for Södermalm in September?

With highs of 16°C (61°F) and lows of 11°C (52°F) in September, we recommend: Layered clothing, Light jacket, Umbrella, Comfortable walking shoes. Comfortable walking shoes are essential.

Is September among the best months weather-wise in Södermalm?

Yes, September offers some of the best weather conditions in Södermalm with comfortable temperatures and lower chances of rain.

What is the UV index in Södermalm in September?

The average UV index in Södermalm during September is 3 (moderate). Sunscreen and sunglasses are recommended during midday hours.

How many hours of daylight are there in Södermalm in September?

Södermalm gets approximately 13 hours of daylight per day in September, with around 9 hours of sunshine.

Does it snow in Södermalm in September?

Snow is uncommon in Södermalm during September based on 10-year climate averages.

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