Climate averages 1991–2020
Köln weather
in April.
A cool, moderately wet month: the 7th warmest and the driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in Köln: daytime highs average 14.2°C and nights cool to about 5.1°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 52 mm of rain on roughly 11 days, which makes April a moderately wet month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 13 h 47 min on an average April day.
The nearest other city in this atlas is Leverkusen (11 km away). In April its highs average 14.4°C, about as warm as Köln, with 52 mm of rain.
Among the 120 cities listed in Germany, Köln ranks joint 46th of 120 for the warmest April highs and joint 71st of 120 for the driest April (rainfall, lowest first). The mean April high of those 120 cities is 14.0°C; Köln is 0.2°C warmer than that mean.
From April to May, average highs rise by 3.8°C to 18.0°C, and monthly rainfall rises from 52 mm to 62 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Köln climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.2°C0.5°C | 0.5°C | 90 | 14.8 | 8.58 h |
| February | 6.4°C0.5°C | 0.5°C | 74 | 12.8 | 10.010 h |
| March | 10.0°C2.3°C | 2.3°C | 73 | 13.7 | 11.812 h |
| April, selected | 14.2°C5.1°C | 5.1°C | 52 | 10.8 | 13.814 h |
| May | 18.0°C9.1°C | 9.1°C | 62 | 11.9 | 15.516 h |
| June | 20.9°C12.3°C | 12.3°C | 70 | 12.2 | 16.416 h |
| July | 23.0°C14.6°C | 14.6°C | 80 | 13.1 | 16.016 h |
| August | 22.9°C14.4°C | 14.4°C | 80 | 11.9 | 14.615 h |
| September | 19.1°C11.4°C | 11.4°C | 71 | 11.3 | 12.713 h |
| October | 14.3°C8.1°C | 8.1°C | 83 | 12.8 | 10.811 h |
| November | 9.1°C4.3°C | 4.3°C | 85 | 14.2 | 9.09 h |
| December | 5.8°C1.5°C | 1.5°C | 101 | 16.0 | 8.08 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Leverkusen in AprilGermany · 11 kmHigh 14.4°C · Low 5.5°C · 52 mm rain
- Bergisch Gladbach in AprilGermany · 14 kmHigh 14.2°C · Low 5.4°C · 60 mm rain
- Troisdorf in AprilGermany · 20 kmHigh 14.4°C · Low 5.3°C · 53 mm rain
- Bonn in AprilGermany · 24 kmHigh 14.5°C · Low 5.3°C · 48 mm rain
- Solingen in AprilGermany · 28 kmHigh 13.4°C · Low 4.8°C · 60 mm rain
- Remscheid in AprilGermany · 32 kmHigh 12.6°C · Low 4.0°C · 65 mm rain
- Düsseldorf in AprilGermany · 34 kmHigh 14.5°C · Low 5.4°C · 52 mm rain
- Neuss in AprilGermany · 35 kmHigh 14.5°C · Low 5.4°C · 52 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Köln) is explained once on the Köln year overview and on the Sources, method and limits page.
Leverkusen lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.