Cologne Weather in May
Cologne in May sees pleasant temperatures, with highs around 20°C (68°F) and overnight lows of 9°C (48°F). Rainfall is fairly high at around 67 mm (2.6 in) on average, so pack waterproofs just in case.
Rainfall in Cologne in May
Historically, the month has about 16 days of rain, averaging 67 mm (2.6 in) in total. Rain falls on many days this month, but usually in relatively small amounts. A light waterproof is more useful than a heavy umbrella.
Temperature in Cologne in May
May in Cologne is generally perfect, with days reaching 20°C (68°F) and nights settling around 9°C (48°F). The difference between afternoon and evening temperatures is usually noticeable. With lows around 9°C (48°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.
Sunshine in Cologne in May
With approximately 199 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.If your ideal day consists of dry skies and pleasant temperatures, May, June, July, August and September typically offer the best circumstances for Cologne.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Germany, check out our Cologne's climate page.
Cologne Temperature in May
Min Temperature
9°C (48°F)
Max Temperature
20°C (68°F)
Chance of Rain
53%
Precipitation
67 mm (2.6 in)
Rainy days
16 days
Sunshine
199 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Cologne typically rise from around 17°C (63°F) at the start of May to approximately 21°C (70°F) by the end. Nights are cool, with lows typically ranging from 6°C (43°F) to 11°C (52°F).
Average temperatures in May
Historical weather for Cologne in May
Browse day-by-day weather records for Cologne spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cologne historical weather extremes in May
Our historical data for Cologne spans 1976 to 2026, revealing these weather extremes.
- The hottest May day on record in Cologne reached 34°C (93°F) (May 29, 2017).
- The lowest daytime temperature in May was 6°C (43°F), recorded on May 4, 1979.
- Cologne registered its coldest May night on May 3, 1981, with temperatures dropping to -2°C (28°F).
Best Places in Germany in May
Find out more about the weather in Germany and which places have the best travel conditions in this month. See all of Germany in May →
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What to Wear in Cologne in May
Comfortable temperatures call for an easy wardrobe in May. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Cologne in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Germany, check out our Cologne's climate page.
See the full Cologne climate overview or explore weather in Germany.
