Climate averages 1991–2020
Troisdorf weather
in August.
A warm, moderately wet month: the 2nd warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Troisdorf: daytime highs average 23.0°C and nights cool to about 14.6°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 81 mm of rain on roughly 12 days, which makes August a moderately wet month (the 11th 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 Bonn (9 km away). In August its highs average 23.2°C, about as warm as Troisdorf, with 78 mm of rain.
Among the 120 cities listed in Germany, Troisdorf ranks joint 48th 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; Troisdorf is 0.1°C warmer than that mean.
From August to September, average highs fall by 3.9°C to 19.2°C, and monthly rainfall falls from 81 mm to 68 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
Troisdorf climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.2°C0.6°C | 0.6°C | 77 | 14.0 | 8.58 h |
| February | 6.5°C0.6°C | 0.6°C | 65 | 12.1 | 10.010 h |
| March | 10.1°C2.5°C | 2.5°C | 68 | 13.6 | 11.812 h |
| April | 14.4°C5.3°C | 5.3°C | 53 | 10.9 | 13.814 h |
| May | 18.1°C9.3°C | 9.3°C | 64 | 11.9 | 15.515 h |
| June | 21.1°C12.5°C | 12.5°C | 73 | 11.8 | 16.416 h |
| July | 23.2°C14.7°C | 14.7°C | 77 | 13.0 | 16.016 h |
| August, selected | 23.0°C14.6°C | 14.6°C | 81 | 12.3 | 14.515 h |
| September | 19.2°C11.5°C | 11.5°C | 68 | 11.0 | 12.713 h |
| October | 14.4°C8.2°C | 8.2°C | 74 | 12.2 | 10.811 h |
| November | 9.2°C4.5°C | 4.5°C | 76 | 13.5 | 9.09 h |
| December | 5.8°C1.6°C | 1.6°C | 90 | 15.5 | 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
- Bonn in AugustGermany · 9 kmHigh 23.2°C · Low 14.6°C · 78 mm rain
- Bergisch Gladbach in AugustGermany · 20 kmHigh 22.8°C · Low 14.6°C · 87 mm rain
- Köln in AugustGermany · 20 kmHigh 22.9°C · Low 14.4°C · 80 mm rain
- Leverkusen in AugustGermany · 27 kmHigh 23.1°C · Low 14.8°C · 80 mm rain
- Solingen in AugustGermany · 41 kmHigh 21.7°C · Low 13.9°C · 94 mm rain
- Remscheid in AugustGermany · 41 kmHigh 21.0°C · Low 13.2°C · 99 mm rain
- Düren in AugustGermany · 46 kmHigh 22.4°C · Low 14.0°C · 79 mm rain
- Wuppertal in AugustGermany · 50 kmHigh 22.1°C · Low 14.2°C · 99 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 Troisdorf) is explained once on the Troisdorf year overview and on the Sources, method and limits page.