Cologne weather in May
May in Cologne: nice, a little rain — an excellent time to visit.
#4 of 12 months in Cologne · #227 of 604 destinations to visit in May · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Cologne climate normals — May
| Daytime high | 18°C / 64°F | 😎 nice |
|---|---|---|
| Nighttime low | 8°C / 47°F | |
| Feels like (high) | 16°C / 61°F | |
| Rainfall | 59 mm / 2.3 in | 🌦 some rain |
| Rainy days | 13 days | |
| Humidity | 70% | 💧 humid |
| Dew point | 9°C / 48°F | |
| Sunshine | 10.9 h/day | |
| Daylight | 15.6 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 54 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Cologne?
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Cologne in May — FAQ
- Is May a good time to visit Cologne?
- May in Cologne: nice, a little rain — an excellent time to visit. It ranks #4 of 12 months for Cologne on SeasonMap's comfort score (84/100).
- What is the weather like in Cologne in May?
- In May, Cologne averages a daily high of 17.7°C and a low of 8.3°C, with about 58.5 mm of rain over roughly 12.6 rainy days.
- What is the air quality in Cologne in May?
- Cologne has a mean US Air Quality Index of about 54 in May.