August · Germany
Best time to visit Cologne in August Weather, crowds & prices
Weather in Cologne in August
Average temperature 20°C, 69 mm of rain, about 28 days with 6+ hours of sunshine and 70% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
August score
8.9/10
Ranked #1 of 12 months
- Avg temp
- 20°C
- Rainfall
- 69 mm
- Humidity
- 70%
- Days with 6h+ sun
- 28
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
August in Cologne scores 8.9/10 for sightseeing and cultural travel - the single best month of the year. Expect around 20°C, 69 mm of rain, and roughly 28 days with 6+ hours of sunshine this month.
Cologne's twin-spired cathedral rises over a Rhine city of Roman roots and a famous carnival.
August in Cologne tops the year's climate scores
At 20°C (68°F) this is comfortable city weather in August, with sightseeing easiest before lunch and after the afternoon peak.
Budget for roughly 69 mm of rain this month — a flexible day or two helps — with about 28 days with 6+ hours of sunshine and 14.5 hours of daylight to work around it.
On our climate-comfort scale this is the top-ranked month of the year for Cologne at 8.9/10 — the reference point every other month on this page is measured against.
Pack light clothing, a hat and real sun protection, a packable rain layer.
Budget for peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Cologne in August?
- In August, Cologne averages 20°C, 69 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 8.9/10.
- Is August a good time to visit Cologne?
- August earns a 8.9/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Cologne in August?
- Expect about 69 mm of rain in August. Average humidity is 70% and there are about 28 days with 6+ hours of sunshine.
Curated in Cologne
Tickets & experiences
Things to do in Cologne
Cologne, Germany. Live activities and tours from GetYourGuide, matched to this destination.