Aarhus weather in September

September in Aarhus: nice, a little rain, with clean air — an excellent time to visit.

Updated September 2026 · climate normals from ERA5 reanalysis

Aarhus🇩🇰 Denmark · Scandinavia · City82
  1. 43Jan
  2. 51Feb
  3. 63Mar
  4. 74Apr
  5. 81May
  6. 88Jun
  7. 87Jul
  8. 90Aug
  9. 82Sep
  10. 67Oct
  11. 56Nov
  12. 46Dec

#4 of 12 months in Aarhus · #599 of 1413 destinations to visit in September · comfort 82/100 (tier A)

Days
18°C
Nights
9°C
Wet days
10
Sun
8.6 h
Humidity
81%
Daylight
13 h
Aarhus, Denmark
Photo: Joerg Mangelsen · Pexels

Traveller notes on Aarhus in September

Other months in Aarhus

Forum posters describe December temperatures across Denmark, Aarhus included, as typically 0-5C by day with a real chance of dropping below freezing, and note that wind, which is often present, can make it feel considerably colder still. Posters consistently flag limited daylight as a defining feature of December here, with around 7 hours of sun typical for this latitude. Posters describe a genuine mix of gray, overcast, wet days alongside occasional clear, crisp winter days, with December/January generally the wetter stretch of Danish winter. Posters generally rate the Christmas lights and holiday atmosphere as a real upside that helps offset the short, often gray days. Posters generally rate December as cold and dark but manageable with proper winter layers for a visit to Aarhus.
Tripadvisor community · December · 1 month ago · Read more on Tripadvisor ↗
June in Aarhus brings seventeen and a half hours of daylight and days around 20°C, which the forum is careful to say can also run a good deal lower. Their standing note about Denmark holds here: you will still want a sweater, because the wind off the water is prickly cold even in summer. Rain comes in showers rather than all day — Danish weather is unpredictable, but it is rarely a write-off. The sea reaches about 17°C. Aarhus works well as a base for excursions and is easy from Copenhagen, by frequent train or a cheaper bus.
Tripadvisor community · June · 1 month ago · Read more on Tripadvisor ↗

Add your own note from Aarhus's card on the map.

Aarhus climate normals — September

Daytime high18°C / 65°F😎 nice
Nighttime low9°C / 49°F
Feels like (high)16°C / 61°F
Sea temperature18°C / 64°F🧊 bracing
Rainfall58 mm / 2.3 in🌦 some rain
Rainy days10 days
Humidity81%💦 very humid
Dew point11°C / 52°F
Sunshine8.6 h/day
Daylight12.7 h
Wind21 km/h / 13 mph
Air quality (US AQI)39🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Aarhus in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusyAarhus Festuge, school holidays in 3 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Aarhus's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Fair weatherAarhus's weather peaks June–August.

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Best weatherFair weatherToughest weather

What's on in Aarhus in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Festival

    Aarhus Festuge

    28 Aug – 6 SepArts festivalCrowdedBook early

    Ten days that put around a thousand events into the streets, the harbour and the university park. Book a bed before the programme comes out rather than after it. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Aarhus — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Aarhus?

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Aarhus in September — FAQ

Is September a good time to visit Aarhus?
September in Aarhus: nice, a little rain, with clean air — an excellent time to visit. It ranks #4 of 12 months for Aarhus on SeasonMap's comfort score (82/100).
What is the weather like in Aarhus in September?
In September, Aarhus averages a daily high of 18.2°C and a low of 9.2°C, with about 58.4 mm of rain over roughly 10.3 rainy days.
What is the air quality in Aarhus in September?
Aarhus has a mean US Air Quality Index of about 39 in September.

Within 300 km: Copenhagen's Tivoli summer season on 27 Mar – 20 Sep, and Sylt's Heather in flower around 10 Aug – 20 Sep.