Cologne in May
In May, Cologne averages 19°C (66°F) during the day and 9°C (49°F) at night, with frequent rain — about 18 days of the month see precipitation (68 mm total).
ShoulderConditions are comfortable for sightseeing without being sweltering. Expect daily rain or showers, often in heavy bursts.
May offers comfortable temperatures in Cologne, with some rain to plan around.
How May compares to the rest of the year in Cologne
May is in the middle of the year for warmth in Cologne (5th of 12) and moderately rainy compared to the rest of the year (8th of 12). Daytime temperature runs 3°C above the annual average (15°C). May runs 4°C warmer than April (15°C) and warms a further 4°C into June (23°C).
May sunrise & sunset in Cologne
Times shown for Cologne local time (Europe/Berlin), calculated for the 15th of May. They shift by a few minutes day to day across the month.
Photography light in Cologne — May
Golden-hour and blue-hour windows for the 15th of May, in Cologne's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Cologne in May
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on May's tier (Shoulder) and Cologne's popularity.
Crowds & pricing — May in Cologne
Cologne is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: comfortable tourism weather
Sun & mosquito risk — May in Cologne
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Cologne in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 6°C / 43°F | 1°C / 35°F | 91 mm | 23 | — |
| February | 8°C / 47°F | 2°C / 35°F | 65 mm | 17 | — |
| March | 11°C / 52°F | 3°C / 37°F | 71 mm | 18 | — |
| April | 15°C / 59°F | 5°C / 41°F | 49 mm | 17 | — |
| May | 19°C / 66°F | 9°C / 49°F | 68 mm | 18 | — |
| June | 23°C / 74°F | 14°C / 57°F | 67 mm | 18 | — |
| July | 24°C / 76°F | 15°C / 59°F | 96 mm | 20 | — |
| August | 24°C / 75°F | 15°C / 59°F | 79 mm | 20 | — |
| September | 21°C / 69°F | 12°C / 54°F | 69 mm | 16 | — |
| October | 16°C / 60°F | 9°C / 48°F | 64 mm | 19 | — |
| November | 10°C / 50°F | 5°C / 41°F | 83 mm | 21 | — |
| December | 8°C / 46°F | 3°C / 37°F | 88 mm | 20 | — |
Other cities with similar May weather
🌍 See the full ranked list of climate twins for Cologne in May →
Frequently asked questions
How hot is Cologne in May?
In May, Cologne averages a high of 19°C (66°F) and a low of 9°C (49°F) — generally mild and pleasant.
Does it rain a lot in Cologne in May?
May is quite rainy in Cologne, with about 18 rainy days on average.
Is May a good time to visit Cologne?
May is mild and pleasant but on the rainy side. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Cologne in May?
Pack light layers for warm days and cooler evenings, plus a compact umbrella or rain jacket. See the full May packing list for Cologne for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.