Denmark in September has mild conditions, with highs averaging 18.7°C (66°F) and noticeably cooler mornings.
This month falls at the beginning of Autumn.
Temperature
19°C / 11°C
Denmark Weather in September 2026
Monthly climate averages for Copenhagen. Based on 10-year ERA5 reanalysis data.
Cfb Oceanic
Climate Overview
Compared to August, this month is about 3°C cooler with 2 fewer rainy days. Temperatures begin dropping heading into October.
Monthly September Averages
Feels Like
17°C / 10°C
Rain
9 days · 65 mm
Sunshine
9h / day
Humidity
81% — Very Humid
Wind
21 km/h
Wind Direction
SSW (195°)
Gusts
40 km/h
Daylight
12.7 h
Cloud Cover
61%
Clear Sky Days
2.2
Dew Point
12°C — Comfortable
Moon Phase
Waxing Crescent · 11%
Seasonal Demand
Quiet (2/5)
Sun Position
Sunrise 06:42
Daylight 12.8h
Sunset 19:31
Pros
- Comfortable temperatures for sightseeing
- Abundant sunshine for exploring and outdoor fun
Cons
- Popular month due to favourable weather conditions
What to Wear
Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions. Pack a compact umbrella or light rain jacket for occasional showers.
Packing List
Warm evening layerUmbrellaComfortable walking shoes
Compare Months
January
Poor 
February
Poor March
Poor April
Fair May best
Fair June best
Good July best
Excellent August best
Excellent September best
Good October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | Status | Details |
|---|---|---|---|---|---|---|---|
| January | 5°C / 1°C | 0°C / -4°C | 12days (68 mm) Wet | 3h Poor | 89% Very Muggy | Poor | View Details |
| February | 5°C / 1°C | 1°C / -4°C | 12days (59 mm) Wet | 4.8h Fair | 86% Very Muggy | Poor | View Details |
| March | 8°C / 1°C | 4°C / -3°C | 9days (36 mm) Wet | 7.9h Good | 79% Humid | Poor | View Details |
| April | 11°C / 3°C | 8°C / -1°C | 7days (34 mm) Good | 10.6h Excellent | 71% Muggy | Fair | View Details |
| May best | 16°C / 8°C | 13°C / 5°C | 11days (48 mm) Wet | 12.5h Excellent | 71% Muggy | Fair | View Details |
| June best | 21°C / 12°C | 19°C / 10°C | 10days (59 mm) Wet | 13.1h Excellent | 72% Muggy | Good | View Details |
| July best | 21°C / 14°C | 20°C / 12°C | 14days (88 mm) Wet | 12.1h Excellent | 76% Humid | Excellent | View Details |
| August best | 22°C / 13°C | 21°C / 12°C | 11days (78 mm) Wet | 11.1h Excellent | 76% Humid | Excellent | View Details |
| September best | 19°C / 11°C | 17°C / 10°C | 9days (65 mm) Wet | 9h Good | 81% Humid | Good | View Details |
| October | 13°C / 8°C | 11°C / 5°C | 14days (76 mm) Wet | 5.5h Fair | 86% Very Muggy | Fair | View Details |
| November | 8°C / 5°C | 5°C / 1°C | 10days (45 mm) Wet | 3.1h Poor | 88% Very Muggy | Poor | View Details |
| December | 5°C / 2°C | 1°C / -3°C | 11days (55 mm) Wet | 1.9h Poor | 90% Very Muggy | Poor | View Details |
Frequently Asked Questions
September is typically good for visiting Denmark, with average highs of 19°C (66°F) and around 9 rainy days. Denmark in September has mild conditions, with highs averaging 18.7°C (66°F) and noticeably cooler mornings.
Denmark typically sees around 9 rainy days in September with 65 mm (2.6 in) of total rainfall. An umbrella should suffice.
With highs of 19°C (66°F) and lows of 11°C (53°F) in September, we recommend: Warm evening layer, Umbrella, Comfortable walking shoes. Comfortable walking shoes are essential.
Yes, September offers some of the best weather conditions in Denmark with comfortable temperatures and lower chances of rain.
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