Climate averages 1991–2020
Siegen weather
in August.
A mild, moderately wet month: the 2nd warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Siegen: daytime highs average 21.6°C and nights cool to about 13.5°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 81 mm of rain on roughly 13 days, which makes August a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 33 min on an average August day.
The nearest other city in this atlas is Lüdenscheid (47 km away). In August its highs average 20.4°C, 1.2°C cooler than Siegen, with 99 mm of rain.
Among the 120 cities listed in Germany, Siegen ranks 109th of 120 for the warmest August highs and joint 83rd of 120 for the driest August (rainfall, lowest first). The mean August high of those 120 cities is 22.9°C; Siegen is 1.3°C cooler than that mean.
From August to September, average highs fall by 4.0°C to 17.6°C, and monthly rainfall falls from 81 mm to 76 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
Siegen climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.2°C-1.4°C | -1.4°C | 100 | 14.6 | 8.58 h |
| February | 4.3°C-1.6°C | -1.6°C | 79 | 12.1 | 10.010 h |
| March | 8.3°C1.0°C | 1.0°C | 82 | 13.7 | 11.812 h |
| April | 13.1°C4.4°C | 4.4°C | 62 | 11.7 | 13.814 h |
| May | 16.9°C8.4°C | 8.4°C | 72 | 12.6 | 15.515 h |
| June | 19.9°C11.5°C | 11.5°C | 76 | 12.8 | 16.416 h |
| July | 21.9°C13.7°C | 13.7°C | 83 | 14.2 | 16.016 h |
| August, selected | 21.6°C13.5°C | 13.5°C | 81 | 13.0 | 14.615 h |
| September | 17.6°C10.4°C | 10.4°C | 76 | 11.6 | 12.713 h |
| October | 12.7°C6.8°C | 6.8°C | 80 | 12.9 | 10.811 h |
| November | 7.4°C3.0°C | 3.0°C | 85 | 13.4 | 9.09 h |
| December | 4.0°C0.0°C | 0.0°C | 109 | 15.8 | 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
August in nearby cities
- Lüdenscheid in AugustGermany · 47 kmHigh 20.4°C · Low 12.8°C · 99 mm rain
- Marburg an der Lahn in AugustGermany · 53 kmHigh 22.6°C · Low 13.7°C · 61 mm rain
- Gießen in AugustGermany · 56 kmHigh 23.2°C · Low 14.2°C · 60 mm rain
- Arnsberg in AugustGermany · 57 kmHigh 21.1°C · Low 13.3°C · 84 mm rain
- Iserlohn in AugustGermany · 60 kmHigh 21.2°C · Low 13.5°C · 84 mm rain
- Troisdorf in AugustGermany · 62 kmHigh 23.0°C · Low 14.6°C · 81 mm rain
- Bergisch Gladbach in AugustGermany · 64 kmHigh 22.8°C · Low 14.6°C · 87 mm rain
- Koblenz in AugustGermany · 66 kmHigh 23.5°C · Low 14.7°C · 59 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 Siegen) is explained once on the Siegen year overview and on the Sources, method and limits page.