Germany Hamburg Weather in September — Climate Guide
September in Hamburg is high
September is high for Hamburg.
September is a strong shoulder-season month — mild, often still pleasant, with the summer crowds easing but the city still lively. It averages around 18°C/11°C, cooler and breezier than August, with shortening days and crisp, golden spells between rain systems.
The Reeperbahn Festival, one of Europe's major club-music showcases, takes over St. Pauli's venues in September — a great time for music fans, though it pushes up hotel demand. The Alster and harbor are still enjoyable on fine days, and the early-autumn light over the Speicherstadt is lovely.
Travel score
Hamburg September Weather Stats
Avg High
18°C
Avg Low
11°C
Rainy Days
13
68mm total
Sunshine
5h
Daily avg
Humidity
79%
comfortable
UV Index
4
Moderate
Wind
16 km/h
Gusts 33
Crowds
Busy
At attractions
September Sunrise & Sunset
Air Quality
PM2.5
12 μg/m³
PM10
20 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
18°C
Nighttime
10°C
Humidity and wind affect how the actual temperature feels.
Wind
16 km/h
Max gust 33 km/h
Activities Recommended for September
September Travel Pros & Cons
Pros
- Shoulder-season balance — fewer crowds
- Reeperbahn Festival for music fans
- Still-pleasant days and golden light
- Outdoor life largely continues
Cons
- Cooler, breezier, and shortening days
- Reeperbahn Festival spikes hotel demand
- More changeable autumn weather
- Evenings turn cool and damp
September Events & Festivals
- Reeperbahn Festival — major club-music showcase (September)
- Cruise Days / harbor events in some years
- Shoulder-season value as crowds ease
- Early-autumn light over the harbor
Hamburg in September — Full Picture
September is a strong shoulder-season month — mild, often still pleasant, with the summer crowds easing but the city still lively. It averages around 18°C/11°C, cooler and breezier than August, with shortening days and crisp, golden spells between rain systems.
The Reeperbahn Festival, one of Europe's major club-music showcases, takes over St. Pauli's venues in September — a great time for music fans, though it pushes up hotel demand. The Alster and harbor are still enjoyable on fine days, and the early-autumn light over the Speicherstadt is lovely.
With crowds thinning after the school holidays, September offers a good balance of decent weather, open outdoor life, and slightly easier prices than peak summer (festival dates aside).
Pack light layers, a sweater, an evening jacket, and a rain shell — September can swing from warm afternoons to cool, damp evenings. It's a smart pick for travelers wanting summer's life with fewer crowds.
What to Wear & What to Pack
Early autumn — around 18°C/11°C, mild, often still pleasant, but cooler and breezier with shortening days. Light layers, a sweater, and a jacket for the evening, plus a rain shell. Crisp, golden days appear between systems.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
13°C
4.3°C
13.3/mo
Summer (Jun·Jul·Aug)
21.3°C
12.3°C
13.7/mo
Autumn (Sep·Oct·Nov)
Current13°C
7°C
14.3/mo
Winter (Dec·Jan·Feb)
4.7°C
-0.7°C
16.7/mo
Hamburg Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| 4° | -1° | 18d·64mm | 1.5h | 87% | 1 | Quiet | Low season | |
| 5° | -1° | 15d·47mm | 2.5h | 85% | 1 | Quiet | Low season | |
| 8° | 1° | 14d·51mm | 3.5h | 81% | 2 | Moderate | Shoulder | |
| 13° | 4° | 13d·46mm | 5h | 75% | 4 | Moderate | Shoulder | |
| May (Best) | 18° | 8° | 13d·54mm | 7h | 71% | 5 | Busy | Peak |
| June (Best) | 20° | 11° | 14d·75mm | 7.5h | 71% | 6 | Very busy | Peak |
| July (Best) | 22° | 13° | 14d·84mm | 7h | 73% | 6 | Very busy | Peak |
| August (Best) | 22° | 13° | 13d·79mm | 6.5h | 75% | 5 | Very busy | Peak |
| 18° | 11° | 13d·68mm | 5h | 79% | 4 | Busy | Peak | |
| 13° | 7° | 14d·64mm | 3h | 84% | 2 | Moderate | Shoulder | |
| 8° | 3° | 16d·64mm | 1.5h | 88% | 1 | Moderate | Shoulder | |
| 5° | 0° | 17d·64mm | 1h | 89% | 1 | Busy | Peak |
View Other Months
Hamburg September Hotel Picks
Frequently Asked Questions
Is September a good time to visit Hamburg?
Hamburg in September is high. Tourist crowds are busy and flight/hotel prices are peak.
What's the average temperature in Hamburg in September?
Hamburg September averages a high of 18°C and a low of 11°C.
Does it rain much in Hamburg in September?
Hamburg September averages 68mm of rainfall over about 13 rainy days.
What should I wear in Hamburg in September?
Early autumn — around 18°C/11°C, mild, often still pleasant, but cooler and breezier with shortening days. Light layers, a sweater, and a jacket for the evening, plus a rain shell. Crisp, golden days appear between systems.
What time are sunrise and sunset in Hamburg in September?
Hamburg September sunrise is 06:55 and sunset is 19:35, with 12h 40min of daylight.
What's the air quality like in Hamburg in September?
Hamburg September air quality (AQI) averages 33, rated Good. PM2.5 averages 12μg/m³.
What activities are recommended in Hamburg in September?
In September, Hamburg is great for Reeperbahn Festival (music), Alster and harbor on fine days, Speicherstadt in autumn light.
Is September peak season in Hamburg?
Hamburg September crowds are busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Hamburg
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.