01Weather
Copenhagen weather in September
Afternoons in September average 18.4 °C (65 °F) and nights cool to 12.4 °C (54 °F). Compared with August it is 3.1 °C cooler; October is 5.3 °C cooler again.
What the averages hide
| In a typical September | Value | What it means |
|---|---|---|
| Warm afternoons (90th percentile) | 22 °C / 72 °F | one day in ten is at least this warm |
| Cool afternoons (10th percentile) | 15 °C / 59 °F | one day in ten stays below this |
| Cold nights (10th percentile) | 9 °C / 48 °F | one night in ten is colder than this |
| Days above 30 °C (86 °F) | 0.0 | per month, average 2016–2025 |
| Nights at or below 0 °C (32 °F) | 0.0 | frost mornings per month |
| Hottest / coldest September day 2016–2025 | 27.6 °C / 4.3 °C | extremes in the ten-year record |
02Daylight
Sunrise, sunset and the length of the day
| Date | Sunrise | Sunset | Daylight |
|---|---|---|---|
| 1 September | 06:15 | 20:04 | 13.8 h |
| 15 September | 06:41 | 19:27 | 12.8 h |
| 30 September | 07:10 | 18:48 | 11.6 h |
Daylight shrinks by about 132 minutes over the month. Times are local (Europe/Copenhagen).
03Crowds
How busy Copenhagen is in September
moderate The main sights are moderate in September. What drives it:
- Golden Days festival
- schools back, weather still mild
04Public holidays
Public holidays in September 2027
No public holidays in Denmark fall in September, so shops and museums keep normal hours all month.
05Events
What's on in Copenhagen in September
Every year in September
| Event | When | Type |
|---|---|---|
| Golden Days | September, history festival | culture |
07Packing
What to pack for Copenhagen in September
- layers: t-shirt plus a light jacket for evenings
- comfortable walking shoes
- a compact umbrella for occasional showers
08Editor's notes
What the numbers don't tell you
September is mild, often sunny and far calmer, with afternoons around 17 °C, the Golden Days history festival and the harbour still warm enough for the brave. It is the best-value month with good weather. Daylight drops from fourteen hours to twelve across the month, with sunset moving from about eight to just before seven. Rain falls on about ten days.
Tivoli's summer season ends in the third week of September. Cruise ships continue into October. The Copenhagen Half Marathon in mid-September closes central streets for a morning. The city's apple and plum harvest fills the market at Torvehallerne. For a cycling trip, September has the best combination of light, temperature and empty bike lanes. October turns cool with the Halloween season; see October.
09Compare
Copenhagen month by month
| Month | High | Low | Rain days | Sun h | Crowds | Verdict |
|---|---|---|---|---|---|---|
| January | 4 °C | 0 °C | – | – | quiet | Good |
| February | 5 °C | 1 °C | – | – | quiet | Good |
| March | 7 °C | 1 °C | – | – | quiet | Good |
| April | 11 °C | 4 °C | – | – | moderate | Good |
| May | 16 °C | 9 °C | – | – | busy | Good |
| June | 21 °C | 13 °C | – | – | busy | Excellent |
| July | 21 °C | 15 °C | – | – | very busy | Good |
| August | 22 °C | 14 °C | – | – | very busy | Good |
| September | 18 °C | 12 °C | – | – | moderate | Excellent |
| October | 13 °C | 9 °C | – | – | moderate | Good |
| November | 8 °C | 5 °C | – | – | quiet | Good |
| December | 6 °C | 2 °C | – | – | moderate | Good |
Not sure about September? See the best time to visit Copenhagen.
10Elsewhere
September in nearby cities
| City | High | Rain days |
|---|---|---|
| Amsterdam in September | 20 °C | 10 |
| Prague in September | 21 °C | 8 |
| London in September | 19 °C | 7 |
| Budapest in September | 24 °C | 10 |
| Paris in September | 22 °C | 10 |
| Venice in September | 24 °C | 7 |
11FAQ
Copenhagen in September: your questions
Is September a good time to visit Copenhagen?
September is one of the best months to visit Copenhagen. Daytime highs average 18 °C (65 °F), and hotel arrivals run above the yearly average, so the main sights are moderate.
What is the weather like in Copenhagen in September?
Expect mild days around 18 °C (65 °F) and nights near 12 °C (54 °F). One September in ten brings afternoons above 22 °C, and one in ten stays below 15 °C.
Does it rain a lot in Copenhagen in September?
September in Copenhagen, by the 1991–2020 station normals.
What should I wear in Copenhagen in September?
Pack layers: t-shirt plus a light jacket for evenings, comfortable walking shoes, a compact umbrella for occasional showers.
Is Copenhagen crowded in September?
The main sights are moderate in September. Main drivers: Golden Days festival; schools back, weather still mild.
What time does it get dark in Copenhagen in September?
Around the middle of September the sun sets at about 19:27 and rises at 06:41, giving 12.8 hours of daylight.