Climate averages 1991–2020
Ulm weather
in April.
A cool, moderately wet month: the 6th warmest and the 3rd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a cool month in Ulm: daytime highs average 13.7°C and nights cool to about 3.9°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 62 mm of rain on roughly 11 days, which makes April a moderately wet month (the 3rd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 38 min on an average April day.
The nearest other city in this atlas is Reutlingen (59 km away). In April its highs average 14.3°C, 0.6°C warmer than Ulm, with 61 mm of rain.
Among the 120 cities listed in Germany, Ulm ranks joint 82nd of 120 for the warmest April highs and joint 109th of 120 for the driest April (rainfall, lowest first). The mean April high of those 120 cities is 14.0°C; Ulm is 0.3°C cooler than that mean.
From April to May, average highs rise by 3.9°C to 17.6°C, and monthly rainfall rises from 62 mm to 95 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
Ulm climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.4°C-2.7°C | -2.7°C | 61 | 11.7 | 8.89 h |
| February | 4.9°C-2.8°C | -2.8°C | 51 | 10.4 | 10.210 h |
| March | 9.2°C0.4°C | 0.4°C | 66 | 12.4 | 11.912 h |
| April, selected | 13.7°C3.9°C | 3.9°C | 62 | 11.3 | 13.614 h |
| May | 17.6°C8.3°C | 8.3°C | 95 | 14.4 | 15.215 h |
| June | 20.9°C11.9°C | 11.9°C | 96 | 14.5 | 16.016 h |
| July | 22.9°C13.9°C | 13.9°C | 99 | 14.5 | 15.716 h |
| August | 22.9°C13.9°C | 13.9°C | 88 | 13.4 | 14.314 h |
| September | 18.4°C10.0°C | 10.0°C | 69 | 11.3 | 12.613 h |
| October | 13.6°C6.1°C | 6.1°C | 67 | 11.4 | 10.911 h |
| November | 7.6°C1.5°C | 1.5°C | 64 | 10.9 | 9.39 h |
| December | 3.9°C-1.5°C | -1.5°C | 68 | 13.0 | 8.48 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
- Reutlingen in AprilGermany · 59 kmHigh 14.3°C · Low 4.2°C · 61 mm rain
- Esslingen in AprilGermany · 63 kmHigh 15.0°C · Low 4.6°C · 54 mm rain
- Augsburg in AprilGermany · 67 kmHigh 14.1°C · Low 3.9°C · 68 mm rain
- Tübingen in AprilGermany · 71 kmHigh 14.4°C · Low 4.3°C · 61 mm rain
- Stuttgart in AprilGermany · 74 kmHigh 14.9°C · Low 4.6°C · 54 mm rain
- Ludwigsburg in AprilGermany · 81 kmHigh 14.6°C · Low 4.5°C · 52 mm rain
- Heilbronn in AprilGermany · 100 kmHigh 15.3°C · Low 5.5°C · 52 mm rain
- Konstanz in AprilGermany · 102 kmHigh 13.6°C · Low 6.3°C · 80 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 Ulm) is explained once on the Ulm year overview and on the Sources, method and limits page.