Climate averages 1991–2020
Trier weather
in May.
A mild, moderately wet month: the 5th warmest and the joint 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Trier: daytime highs average 18.0°C and nights cool to about 9.0°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 73 mm of rain on roughly 13 days, which makes May a moderately wet month (the joint 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 21 min on an average May day.
The nearest other city in this atlas is Luxembourg (40 km away). In May its highs average 17.4°C, 0.6°C cooler than Trier, with 66 mm of rain.
Among the 120 cities listed in Germany, Trier ranks joint 49th of 120 for the warmest May highs and 92nd of 120 for the driest May (rainfall, lowest first). The mean May high of those 120 cities is 17.9°C; Trier is 0.1°C warmer than that mean.
From May to June, average highs rise by 3.2°C to 21.2°C, and monthly rainfall falls from 73 mm to 72 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Luxembourg in MayLuxembourg · 40 kmHigh 17.4°C · Low 8.5°C · 66 mm rain
- Saarbrücken in MayGermany · 64 kmHigh 18.2°C · Low 9.5°C · 68 mm rain
- Metz in MayFrance · 78 kmHigh 18.2°C · Low 9.4°C · 70 mm rain
- Kaiserslautern in MayGermany · 89 kmHigh 18.4°C · Low 9.8°C · 74 mm rain
- Koblenz in MayGermany · 94 kmHigh 18.4°C · Low 9.3°C · 60 mm rain
- Bonn in MayGermany · 114 kmHigh 18.3°C · Low 9.3°C · 61 mm rain
- Düren in MayGermany · 117 kmHigh 17.5°C · Low 8.7°C · 64 mm rain
- Aachen in MayGermany · 120 kmHigh 17.2°C · Low 8.8°C · 66 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.