Weather in Copenhagen in August

How August compares

August is the 2nd warmest month of the year in Copenhagen. Against London's average high of 21.4°C in August, Copenhagen is 0.9°C cooler by day and 1.1°C warmer at night.

Daytime and night-time in August

The typical August day in Copenhagen peaks at 20.5°C, but that is an average: the warmest 10% of days reach 24.8°C or more. Roughly 1 in 11 days top 25°C. Nights average 14.6°C; one night in ten drops to 11.7°C or lower, so pack a layer for evenings - it is genuinely cool after dark. Between 1991 and 2020 the hottest August day here reached 29.6°C (1992-08-10) and the coldest night 8.0°C (1993-08-28).

Rain in August

Wet (more than 8 rainy days): about 13 days with 1 mm or more, 76 mm in total. Year to year it varies a lot - the wettest August was 2010 with 162 mm, the driest 1995 with 16 mm. Humidity averages 76%.

Sunshine and daylight

Around 5.9 hours of sunshine a day (estimated from cloud cover), 14.8 hours of daylight: the sun rises about 05:42 and sets about 20:46 local time in mid-August. Average cloud cover is 60%.

Is August a good time to visit Copenhagen?

August is not the strongest month here: warm days and frequent rain. The best months for Copenhagen on our scoring are July, August, June.

Comfortable warmth, with cooler evenings

August is Copenhagen's second-warmest month, but the warmth is generally moderate. Its average daytime high sits just 0.9°C below London's 21.4°C, so you should not expect a noticeably hotter holiday than at home. Light clothing can work during warmer afternoons, while a jumper or light jacket makes sense once you stop walking or stay out into the evening. The coldest 10% of nights reach 11.7°C or lower, which is a reason not to pack for summer heat alone. This weather suits travellers who want to spend time exploring on foot without planning the whole day around avoiding midday heat.

Keep outdoor plans flexible

Rain is the main compromise in August, so leave room to rearrange outdoor plans rather than relying on a dry stay. About 12 rainy days across the month makes a waterproof jacket and shoes that cope with wet pavements sensible packing choices. That figure does not mean those days are wet throughout, but it is enough to make an entirely outdoor itinerary a gamble. There is still useful sunshine, averaging 5.9 hours a day, within 14.8 hours of daylight. The long daylight window gives you flexibility over when to head out; it should not be mistaken for a promise of clear skies.