May · Germany
Best time to visit Cologne in May Weather, crowds & prices
Weather in Cologne in May
Average temperature 15°C, 78 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).
May score
8.6/10
Ranked #2 of 12 months
- Avg temp
- 15°C
- Rainfall
- 78 mm
- Humidity
- 70%
- Days with 6h+ sun
- 28
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
May in Cologne scores 8.6/10 for sightseeing and cultural travel - one of the top 12-month picks (#2). Expect around 15°C, 78 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.
May is one of the strongest months in Cologne (2nd)
Temperatures hover around 15°C (58°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 78 mm of rain this month — a flexible day or two helps — with about 28 days with 6+ hours of sunshine and 15.6 hours of daylight to work around it.
On our climate-comfort scale this is one of the strongest months of the year for Cologne at 8.6/10 (2nd of 12), just behind August at 8.9/10.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Budget for mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Cologne in May?
- In May, Cologne averages 15°C, 78 mm of rain, and about 28 days with 6+ hours of sunshine. Its climate-comfort score is 8.6/10.
- Is May a good time to visit Cologne?
- May earns a 8.6/10 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 May?
- Expect about 78 mm of rain in May. 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.