Sweden Stockholm Weather in September — Climate Guide
September in Stockholm is very-high
September is very-high for Stockholm.
Best shoulder-season month. Daylight still good (13h), crowds dropping, prices moderating, foliage starting.
Travel score
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
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
- Crowds dropping
- Cheaper than Jun-Aug
- Sea-temp 14°C swim-able
- Foliage starting
Cons
- Rain 10 days/month
- Sunset 19:00
- Korean Chuseok airfare spike
September Events & Festivals
- Korean Chuseok
- Stockholm Film Festival (late month)
Stockholm in September — Full Picture
Best shoulder-season month. Daylight still good (13h), crowds dropping, prices moderating, foliage starting.
What to Wear & What to Pack
Early autumn. Day 16°C tee + cardigan, evening cool.
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. Day 16°C tee + cardigan, evening cool.
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 Archipelago (last warm month), Vasa + ABBA + Skansen, Stockholm Film Festival.
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
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.