When does summer start in Denmark?
Summer starts on 1 June in the statistics.
Short answer
In Danish weather statistics summer covers June, July and August, so it starts on 1 June. The normal mean temperature for the three summer months in 1991–2020 is 16,1 °C for the whole country. A normal summer brings about 212 mm of rain and 653 hours of sunshine. June to the end of August is also the peak travel season, with daytime temperatures around 22 °C.
Why
- Each season in the statistics is three whole months.
- Summer is the warmest season, with a normal mean of 16,1 °C.
- Peak season for travel matches the summer months.
Details
Summer 2026 ended 0,8 °C above normal with a mean of 16,9 °C, the eighth warmest summer since 1874.
Tip
Bring a light rain jacket even in July, as summer showers and cloudbursts are common.
What may differ
The normal is an average of 1991–2020, and a single summer can end up well above or below it.
Common misconception
Danish summer lasts until the end of September.
What actually happens
In the weather statistics summer ends on 31 August, and September is counted as autumn.
People also ask
- What is the warmest month in Denmark?
- How warm is a Danish summer?
- When is the summer holiday in Denmark?
Sources
- DMI: Text, maps and key figures by seasonChecked at:
- DMI: Summary of summer 2026Checked at:
- VisitDenmark: Denmark A-Z, plan your tripChecked at:
- DMI: Summary of autumn 2025Checked at:
This answer is for reference only. Weather varies a lot from year to year, so check the DMI forecast before you travel.
Weather and seasonsRelated questions
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Is there an official weather app for Denmark?
The official weather app for Denmark is DMI Vejr, made by the Danish Meteorological Institute (DMI).
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What should you do in a thunderstorm in Denmark?
In Denmark 85 % of thunderstorms come in June, July and August, so they matter most for summer trips.
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How do I know if the water is clean enough to swim in Copenhagen?
The City of Copenhagen publishes the daily bathing water quality for its bathing spots on badevand.dk, with the weather and a three day forecast for each place.
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When are there lifeguards at the Copenhagen harbour baths?
Copenhagen has three municipal harbour baths: Islands Brygge, Fisketorvet and Sluseholmen.