What August feels like in Cologne
In Cologne, August brings late summer. Days are warm enough for short sleeves, and time outdoors is easy. Once the sun goes down the air changes: nights stay mild. Some humidity hangs in the air, noticeable when the sun is strong.
Rain in Cologne in August
Expect a mix of dry and wet days, with rain about one day in 3. Wet days average about 6.8 mm (0.3 in), enough to soak you without an umbrella. The yearly figure is similar, around 6 mm per wet day.
Daylight and sunshine in August
On 15 August the sun rises at about 6:18 am and sets around 8:56 pm local time, giving 14 h 38 min of daylight. Days are getting shorter: 1 h 30 min less daylight than in mid-July. About 71% of daylight hours are sunny; in short, there are plenty of bright spells.
How August compares to the rest of the year
In Cologne's temperature order, August sits as the 2nd warmest month. Afternoons run 0.5°C (0.9°F) cooler than in July, with 9 mm less rain. The cooling trend carries on into September. September averages a high of 20°C (68°F).
Who August suits
- Sightseeing: a good fit — the weather rarely gets in the way of a city walk.
- Parks & outdoor: a good fit — pleasant for gardens, parks and riversides.
Tips for visiting Cologne in August
Versatile Layers
Mornings and evenings are cooler than midday, so dress in layers.
Rain Protection
Keep a small umbrella in your bag and wear shoes that cope with puddles.
Sunglasses
Bright days make sunglasses worth packing.
Quick questions
How warm is Cologne in August?
Afternoons average 23.4°C (74.1°F) and nights about 14.8°C (58.6°F) — warm by most people's standards. It is the 2nd warmest month of the year.
Does it rain a lot in Cologne in August?
It does: about 12 rainy days bring roughly 82 mm, so plan some indoor options.
What should I wear in Cologne in August?
The numbers point to versatile layers, rain protection and sunglasses. Bring something extra for the cooler evenings.
Is August or September better for visiting Cologne?
September scores better on our climate ranking (#1 of 12 vs #5), rated Great against Good. September is cooler and has fewer rainy days.