Climate averages 1991–2020
Troisdorf weather
in July.
A warm, moderately wet month: the warmest and the joint 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Troisdorf: daytime highs average 23.2°C and nights cool to about 14.7°C. By daytime temperature it is the warmest month of the year.
Expect about 77 mm of rain on roughly 13 days, which makes July a moderately wet month (the joint 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 16 h 01 min on an average July day.
The nearest other city in this atlas is Bonn (9 km away). In July its highs average 23.4°C, about as warm as Troisdorf, with 74 mm of rain.
Among the 120 cities listed in Germany, Troisdorf ranks joint 46th of 120 for the warmest July highs and joint 41st of 120 for the driest July (rainfall, lowest first). The mean July high of those 120 cities is 23.0°C; Troisdorf is 0.1°C warmer than that mean.
From July to August, average highs fall by 0.2°C to 23.0°C, and monthly rainfall rises from 77 mm to 81 mm.
The annual picture
July 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, selected | 23.2°C14.7°C | 14.7°C | 77 | 13.0 | 16.016 h |
| August | 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
July in nearby cities
- Bonn in JulyGermany · 9 kmHigh 23.4°C · Low 14.8°C · 74 mm rain
- Bergisch Gladbach in JulyGermany · 20 kmHigh 23.0°C · Low 14.8°C · 88 mm rain
- Köln in JulyGermany · 20 kmHigh 23.0°C · Low 14.6°C · 80 mm rain
- Leverkusen in JulyGermany · 27 kmHigh 23.2°C · Low 14.9°C · 80 mm rain
- Solingen in JulyGermany · 41 kmHigh 22.0°C · Low 14.0°C · 98 mm rain
- Remscheid in JulyGermany · 41 kmHigh 21.2°C · Low 13.3°C · 105 mm rain
- Düren in JulyGermany · 46 kmHigh 22.5°C · Low 14.2°C · 80 mm rain
- Wuppertal in JulyGermany · 50 kmHigh 22.3°C · Low 14.4°C · 105 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.