Diekirch climate — normals and trends
Diekirch (Luxembourg) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.1 °C and it receives 751 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 (17.6 °C on average) and the coldest is January (0.8 °C). Rainfall peaks in December.
Diekirch averages 69 frost days, 3 hot days (≥ 30 °C) and 139 rainy days per year.
Diekirch has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.
The number of frost days there went from about 84 to 54 per year over the period.
The hottest day of the period reached 38.0 °C (on 25 July 2019) and the coldest -21.4 °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.
Climate normals · ERA5
DiekirchDiekirch
- coords
- 49.87°, 6.15°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.1°C
Average daily high
12.7°C
Average daily low
5.7°C
Annual rainfall
751mm
Sunshine / day
7.5h
Mean relative humidity
80%
Average peak wind
17.7km/h
Seasonal range
16.8°C
Frost days (< 0 °C)
69 d/yr
Hot days (≥ 30 °C)
3 d/yr
Rainy days (≥ 1 mm)
139 d/yr
Annual snowfall
35.5 cm
Average feels-like high
10.2 °C
Average feels-like low
2.8 °C
Average peak gust
36.0 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.0 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.41 · 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).
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
Hottest day
38.0 °C
25 July 2019
Coldest day
-21.4 °C
23 January 1942
Wettest day
67 mm
14 July 2021
Windiest day
55.4 km/h
28 February 2010
Strongest gust
124.2 km/h
24 November 1984
Hottest feels-like
38.6 °C
25 July 2019
Coldest feels-like
-26.5 °C
22 January 1940
Snowiest day
12.0 cm
24 January 1942
Sunniest day
15.3 h
2 July 2006
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 4.9 °C | +2.0 °C | 120 mm | +58 mm |
| Feb | 5.5 °C | +1.0 °C | 41 mm | -15 mm |
| Mar | 12.6 °C | +3.9 °C | 14 mm | -45 mm |
| Apr | 16.1 °C | +3.4 °C | 60 mm | +3 mm |
| May | 19.0 °C | +2.1 °C | 43 mm | -26 mm |
| Jun | 24.3 °C | +4.3 °C | 57 mm | -8 mm |
| Jul | 23.7 °C | +1.6 °C | 81 mm | +18 mm |
| Aug | 24.5 °C | +2.8 °C | 39 mm | -25 mm |
| Sep | 18.3 °C | +0.1 °C | 153 mm | +93 mm |
| Oct | 13.2 °C | +0.1 °C | 86 mm | +25 mm |
| Nov | 8.9 °C | +1.7 °C | 50 mm | -17 mm |
| Dec | 6.7 °C | +2.7 °C | 33 mm | -36 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Diekirch?
Diekirch has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.1 °C and it receives 751 mm of precipitation per year.
What is the hottest day ever recorded in Diekirch?
The hottest day measured in Diekirch between 1940 and 2025 was 25 July 2019, reaching 38.0 °C.
What is the coldest day in Diekirch?
The coldest day measured in Diekirch between 1940 and 2025 was 23 January 1942, at -21.4 °C.
Does it snow in Diekirch?
Yes. Diekirch gets on average 35.5 cm of snow per year and has around 69 frost days.
Has the climate of Diekirch warmed?
Yes: Diekirch warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Diekirch?
The wettest day measured in Diekirch between 1940 and 2025 was 14 July 2021, with 67 mm of rain in 24 hours.
What was the windiest day in Diekirch?
The windiest day measured in Diekirch between 1940 and 2025 was 28 February 2010, with winds reaching 55.4 km/h.
What is the warmest month in Diekirch?
The warmest month in Diekirch is July (17.6 °C on average); the coldest is January (0.8 °C).
How much does it rain in Diekirch?
Diekirch receives on average 751 mm of precipitation per year, spread over about 139 rainy days.
Is it sunny in Diekirch?
Diekirch 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 Diekirch?
The heaviest 24-hour snowfall measured in Diekirch between 1940 and 2025 was 24 January 1942, with 12.0 cm.
Are there tropical nights in Diekirch?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Diekirch.
What was the most extreme apparent temperature in Diekirch?
In Diekirch, between 1940 and 2025, the highest apparent temperature reached 38.6 °C on 25 July 2019, and the lowest was -26.5 °C on 22 January 1940.
Compare Diekirch with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Diekirch