Sweden Stockholm Weather in September — Climate Guide
September in Stockholm is very-high
Stockholm Weather in September — Quick Answer
As of 2026- Avg temp
- 16° / 9°
- Rainfall
- 55mm · 10 days
- Crowds
- Busy
As of 2026, Stockholm in September averages a high of 16°C and low of 9°C with 55mm of rain over about 10 days. Early autumn — tee + cardigan or light sweater, light jacket for evenings, sneakers, compact umbrella. Layered approach essential — 16°C days drop to 9°C nights. Sunglasses for low autumn sun.
September is very-high for Stockholm.
September is Stockholm's best shoulder-season month — daylight still strong (13h+), comfortable 16°C days, crowds at Vasa + ABBA + Gamla Stan dropping by 30-40% from August peak, hotels moderating, and the foliage in Djurgården + Hagaparken starting to turn. Sea-temp still 14°C for the brave swimmer. Stockholm Film Festival (late month) is a serious cinephile draw. If you can only travel one shoulder month, September wins over April.
Travel score
Best shoulder month — 13h daylight + foliage starting + crowds dropping
September Weather at a Glance
September averages 61°F / 16°C highs and 48°F / 9°C lows with 55mm rainfall over 10 wet days. Humidity 76%. Sunshine 5h. Daylight drops from 14h to 11h across the month — sunset moves from 19:50 to 18:15. Sea-temp 14°C still possible swim. Foliage in Djurgården + Hagaparken peaks mid-to-late month. Cold snap possible late month (occasional first frost).
September Travel Advice
Best shoulder-month for first-time Stockholm visitors — pre-book Vasa online but expect shorter queues than summer. Last full month for archipelago day trips (some routes shut down October). Korean Chuseok (varies) drives Korean inbound — flights from Seoul +30-50%. Stockholm Film Festival (late Sept) tickets bookable 2-3 weeks ahead. Compact umbrella + layered clothing essential for changeable weather.
September Pricing Trends
Shoulder pricing returns: Grand Hôtel $550-900/night, mid-range 4-star $200-340. Korean Chuseok week adds $100-300 across both. Flights from Seoul $1,000-1,500 (Chuseok week $1,500-2,500).
Stockholm September Weather Stats
Avg High
16°C
Avg Low
9°C
Rainy Days
10
55mm total
Sunshine
5h
Daily avg
Humidity
76%
moderate
UV Index
3
Moderate
Wind
10 km/h
Gusts 28
Sea Temp
14°C
swimming possible (chilly)
Crowds
Busy
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
15 μg/m³
PM10
28 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
16°C
Nighttime
9°C
Humidity and wind affect how the actual temperature feels.
Wind
10 km/h
Max gust 28 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- 16/9°C still comfortable walking + sightseeing
- Crowds dropping 30-40% from August
- Hotels moderating 20-30% off peak
- Sea-temp 14°C still warm-ish for swim
- Foliage in Djurgården + Hagaparken starting
- Last archipelago weekends before winter shutdown
Cons
- Rain 10 days/month + autumn storms possible
- Sunset at 19:15 by month-end (vs 22:00 July)
- Korean Chuseok week drives airfare spike
- Outdoor café season winding down
- Variable weather (cold snap possible late Sept)
September Events & Festivals
- Korean Chuseok holiday (varies, Korean inbound spike)
- Stockholm Film Festival (late September)
- Crayfish season tails off
- Last archipelago weekends before season winds down
Stockholm in September — Full Picture
September is Stockholm's best shoulder-season month — daylight still strong (13h+), comfortable 16°C days, crowds at Vasa + ABBA + Gamla Stan dropping by 30-40% from August peak, hotels moderating, and the foliage in Djurgården + Hagaparken starting to turn. Sea-temp still 14°C for the brave swimmer. Stockholm Film Festival (late month) is a serious cinephile draw. If you can only travel one shoulder month, September wins over April.
What to Wear & What to Pack
Early autumn — tee + cardigan or light sweater, light jacket for evenings, sneakers, compact umbrella. Layered approach essential — 16°C days drop to 9°C nights. Sunglasses for low autumn sun.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
9.3°C
1.7°C
8/mo
Summer (Jun·Jul·Aug)
21°C
12.7°C
9/mo
Autumn (Sep·Oct·Nov)
Current10.3°C
5°C
10.7/mo
Winter (Dec·Jan·Feb)
0°C
-4.3°C
9.3/mo
Stockholm Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| -1° | -5° | 10d·40mm | 1h | 86% | 0 | Quiet | Low season | |
| 0° | -5° | 8d·30mm | 2h | 84% | 1 | Quiet | Low season | |
| 4° | -2° | 9d·30mm | 4h | 78% | 2 | Quiet | Shoulder | |
| 9° | 1° | 8d·30mm | 6h | 72% | 3 | Moderate | Shoulder | |
| May (Best) | 15° | 6° | 7d·30mm | 9h | 65% | 4 | Busy | Peak |
| June (Best) | 20° | 11° | 8d·45mm | 10h | 65% | 5 | Very busy | Peak |
| July (Best) | 22° | 14° | 9d·60mm | 9h | 67% | 5 | Very busy | Peak |
| August (Best) | 21° | 13° | 10d·65mm | 7h | 70% | 4 | Very busy | Peak |
| 16° | 9° | 10d·55mm | 5h | 76% | 3 | Busy | Peak | |
| 10° | 5° | 11d·50mm | 3h | 82% | 2 | Moderate | Shoulder | |
| 5° | 1° | 11d·55mm | 1h | 87% | 1 | Moderate | Shoulder | |
| December (Best) | 1° | -3° | 10d·45mm | 1h | 88% | 0 | Very busy | Peak |
View Other Months
Stockholm September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Stockholm?
Stockholm in September is very-high. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Stockholm in September?
Stockholm September averages a high of 16°C and a low of 9°C.
Does it rain much in Stockholm in September?
Stockholm September averages 55mm of rainfall over about 10 rainy days.
What should I wear in Stockholm in September?
Early autumn — tee + cardigan or light sweater, light jacket for evenings, sneakers, compact umbrella. Layered approach essential — 16°C days drop to 9°C nights. Sunglasses for low autumn sun.
What time are sunrise and sunset in Stockholm in September?
Stockholm September sunrise is 06:30 and sunset is 19:15, with 12h 45min of daylight.
What's the air quality like in Stockholm in September?
Stockholm September air quality (AQI) averages 45, rated Good. PM2.5 averages 15μg/m³.
What activities are recommended in Stockholm in September?
In September, Stockholm is great for Last archipelago day-trip weekend (Vaxholm + Sandhamn), Djurgården foliage walk + Vasa + ABBA + Skansen, Stockholm Film Festival venues.
Is September peak season in Stockholm?
Stockholm September crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Stockholm
View Other Months
Planning a September trip to Stockholm?
You've checked the weather — next come the budget and the route.
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.