Climate averages 1991–2020
Ulm weather
in August.
A warm, moderately wet month: one of the warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Ulm: daytime highs average 22.9°C and nights cool to about 13.9°C. By daytime temperature it is one of the warmest months of the year.
Expect about 88 mm of rain on roughly 13 days, which makes August a moderately wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 20 min on an average August day.
The nearest other city in this atlas is Reutlingen (59 km away). In August its highs average 23.5°C, 0.6°C warmer than Ulm, with 75 mm of rain.
Among the 120 cities listed in Germany, Ulm ranks joint 53rd of 120 for the warmest August highs and 107th of 120 for the driest August (rainfall, lowest first). The mean August high of those 120 cities is 22.9°C; Ulm is level with that mean.
From August to September, average highs fall by 4.5°C to 18.4°C, and monthly rainfall falls from 88 mm to 69 mm.
The annual picture
August 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 | 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, selected | 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
August in nearby cities
- Reutlingen in AugustGermany · 59 kmHigh 23.5°C · Low 14.2°C · 75 mm rain
- Esslingen in AugustGermany · 63 kmHigh 24.2°C · Low 14.6°C · 68 mm rain
- Augsburg in AugustGermany · 67 kmHigh 23.2°C · Low 13.9°C · 105 mm rain
- Tübingen in AugustGermany · 71 kmHigh 23.6°C · Low 14.3°C · 73 mm rain
- Stuttgart in AugustGermany · 74 kmHigh 24.1°C · Low 14.5°C · 68 mm rain
- Ludwigsburg in AugustGermany · 81 kmHigh 23.9°C · Low 14.4°C · 67 mm rain
- Heilbronn in AugustGermany · 100 kmHigh 24.6°C · Low 15.4°C · 62 mm rain
- Konstanz in AugustGermany · 102 kmHigh 23.3°C · Low 16.8°C · 120 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.