Trier climate — normals and trends
Trier has a temperate oceanic climate, averaging 8.8 °C annually with 882 mm of rain per year.
Climate normals · ERA5
TrierRhineland-Palatinate
- coords
- 49.76°, 6.64°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
8.8°C
Average daily high
12.4°C
Average daily low
5.5°C
Annual rainfall
882mm
Sunshine / day
7.5h
Mean relative humidity
80%
Average peak wind
17.0km/h
Seasonal range
17.0°C
Frost days (< 0 °C)
73 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
152 d/yr
Annual snowfall
45.4 cm
Average feels-like high
9.9 °C
Average feels-like low
2.6 °C
Average peak gust
37.1 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.0 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.42 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
37.5 °C
25 July 2019
Coldest day
-22.0 °C
23 January 1942
Wettest day
55 mm
11 May 1970
Windiest day
52.1 km/h
1 March 1990
Strongest gust
130.0 km/h
24 November 1984
Hottest feels-like
37.9 °C
6 July 1957
Coldest feels-like
-27.1 °C
1 January 1979
Snowiest day
20.4 cm
27 April 1981
Sunniest day
15.2 h
28 June 1995
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 4.5 °C | +2.0 °C | 138 mm | +60 mm |
| Feb | 5.1 °C | +1.0 °C | 40 mm | -27 mm |
| Mar | 12.3 °C | +3.9 °C | 18 mm | -51 mm |
| Apr | 15.8 °C | +3.3 °C | 51 mm | -13 mm |
| May | 19.2 °C | +2.6 °C | 47 mm | -33 mm |
| Jun | 24.3 °C | +4.5 °C | 63 mm | -12 mm |
| Jul | 23.8 °C | +2.0 °C | 80 mm | +8 mm |
| Aug | 24.9 °C | +3.4 °C | 41 mm | -31 mm |
| Sep | 18.0 °C | +0.1 °C | 162 mm | +93 mm |
| Oct | 12.8 °C | 0.0 °C | 105 mm | +36 mm |
| Nov | 8.5 °C | +1.7 °C | 55 mm | -26 mm |
| Dec | 6.2 °C | +2.6 °C | 37 mm | -51 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
Trier (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.8 °C and it receives 882 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (17.4 °C on average) and the coldest is January (0.4 °C). Rainfall peaks in December.
Trier averages 73 frost days, 3 hot days (≥ 30 °C) and 152 rainy days per year.
Trier has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.
The number of frost days there went from about 89 to 57 per year over the period.
The hottest day of the period reached 37.5 °C (on 25 July 2019) and the coldest -22.0 °C (on 23 January 1942).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Compare Trier with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Trier
Other cities — Germany
Frequently asked questions
What is the climate of Trier?
Trier has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.8 °C and it receives 882 mm of precipitation per year.
What is the hottest day ever recorded in Trier?
The hottest day measured in Trier between 1940 and 2025 was 25 July 2019, reaching 37.5 °C.
What is the coldest day in Trier?
The coldest day measured in Trier between 1940 and 2025 was 23 January 1942, at -22.0 °C.
Does it snow in Trier?
Yes. Trier gets on average 45.4 cm of snow per year and has around 73 frost days.
Has the climate of Trier warmed?
Yes: Trier warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Trier?
The wettest day measured in Trier between 1940 and 2025 was 11 May 1970, with 55 mm of rain in 24 hours.
What was the windiest day in Trier?
The windiest day measured in Trier between 1940 and 2025 was 1 March 1990, with winds reaching 52.1 km/h.
What is the warmest month in Trier?
The warmest month in Trier is July (17.4 °C on average); the coldest is January (0.4 °C).
How much does it rain in Trier?
Trier receives on average 882 mm of precipitation per year, spread over about 152 rainy days.
Is it sunny in Trier?
Trier gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.
What is the biggest single-day snowfall in Trier?
The heaviest 24-hour snowfall measured in Trier between 1940 and 2025 was 27 April 1981, with 20.4 cm.
Are there tropical nights in Trier?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Trier.
What was the most extreme apparent temperature in Trier?
In Trier, between 1940 and 2025, the highest apparent temperature reached 37.9 °C on 6 July 1957, and the lowest was -27.1 °C on 1 January 1979.
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