Climate averages 1991–2020
Trier weather
in August.
A warm, moderately wet month: the 2nd warmest and the joint 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Trier: daytime highs average 23.3°C and nights cool to about 14.1°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 70 mm of rain on roughly 11 days, which makes August a moderately wet month (the joint 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 27 min on an average August day.
The nearest other city in this atlas is Luxembourg (40 km away). In August its highs average 22.7°C, 0.6°C cooler than Trier, with 62 mm of rain.
Among the 120 cities listed in Germany, Trier ranks joint 39th of 120 for the warmest August highs and joint 40th of 120 for the driest August (rainfall, lowest first). The mean August high of those 120 cities is 22.9°C; Trier is 0.4°C warmer than that mean.
From August to September, average highs fall by 4.2°C to 19.1°C, and monthly rainfall falls from 70 mm to 67 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
Trier climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.8°C0.0°C | 0.0°C | 82 | 13.1 | 8.69 h |
| February | 6.2°C0.0°C | 0.0°C | 68 | 11.3 | 10.110 h |
| March | 10.1°C2.0°C | 2.0°C | 70 | 12.7 | 11.912 h |
| April | 14.3°C4.8°C | 4.8°C | 57 | 11.6 | 13.714 h |
| May | 18.0°C9.0°C | 9.0°C | 73 | 12.9 | 15.415 h |
| June | 21.2°C12.1°C | 12.1°C | 72 | 11.9 | 16.216 h |
| July | 23.4°C14.3°C | 14.3°C | 71 | 12.3 | 15.916 h |
| August, selected | 23.3°C14.1°C | 14.1°C | 70 | 11.2 | 14.514 h |
| September | 19.1°C10.9°C | 10.9°C | 67 | 10.4 | 12.713 h |
| October | 14.2°C7.6°C | 7.6°C | 73 | 11.8 | 10.811 h |
| November | 8.8°C3.8°C | 3.8°C | 77 | 13.0 | 9.19 h |
| December | 5.4°C1.0°C | 1.0°C | 99 | 14.4 | 8.28 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
- Luxembourg in AugustLuxembourg · 40 kmHigh 22.7°C · Low 13.7°C · 62 mm rain
- Saarbrücken in AugustGermany · 64 kmHigh 23.9°C · Low 15.0°C · 60 mm rain
- Metz in AugustFrance · 78 kmHigh 24.0°C · Low 14.8°C · 64 mm rain
- Kaiserslautern in AugustGermany · 89 kmHigh 23.9°C · Low 15.3°C · 65 mm rain
- Koblenz in AugustGermany · 94 kmHigh 23.5°C · Low 14.7°C · 59 mm rain
- Bonn in AugustGermany · 114 kmHigh 23.2°C · Low 14.6°C · 78 mm rain
- Düren in AugustGermany · 117 kmHigh 22.4°C · Low 14.0°C · 79 mm rain
- Aachen in AugustGermany · 120 kmHigh 22.0°C · Low 14.0°C · 79 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 Trier) is explained once on the Trier year overview and on the Sources, method and limits page.