Merchweiler climate — normals and trends
Merchweiler (Germany) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 9.8 °C and it receives 829 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 (18.6 °C on average) and the coldest is January (1.0 °C). Rainfall peaks in December.
Merchweiler averages 63 frost days, 6 hot days (≥ 30 °C) and 143 rainy days per year.
Merchweiler has warmed by +1.9 °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 78 to 48 per year over the period.
The hottest day of the period reached 38.8 °C (on 5 July 2015) and the coldest -20.7 °C (on 18 January 1940).
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
MerchweilerSaarland
- coords
- 49.35°, 7.05°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.8°C
Average daily high
13.4°C
Average daily low
6.4°C
Annual rainfall
829mm
Sunshine / day
7.7h
Mean relative humidity
77%
Average peak wind
17.2km/h
Seasonal range
17.6°C
Frost days (< 0 °C)
63 d/yr
Hot days (≥ 30 °C)
6 d/yr
Rainy days (≥ 1 mm)
143 d/yr
Annual snowfall
37.4 cm
Average feels-like high
11.0 °C
Average feels-like low
3.5 °C
Average peak gust
36.3 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
11.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.9 °C
since 1940
+0.2 °C per decade · r² = 0.40 · 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
38.8 °C
5 July 2015
Coldest day
-20.7 °C
18 January 1940
Wettest day
60 mm
11 May 1970
Windiest day
63.2 km/h
26 December 1999
Strongest gust
124.9 km/h
26 December 1999
Hottest feels-like
38.4 °C
6 July 1952
Coldest feels-like
-25.9 °C
20 December 2009
Snowiest day
15.1 cm
29 December 2001
Sunniest day
15.1 h
1 July 1940
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 | 5.4 °C | +2.3 °C | 122 mm | +45 mm |
| Feb | 5.9 °C | +0.9 °C | 39 mm | -29 mm |
| Mar | 12.9 °C | +3.6 °C | 23 mm | -45 mm |
| Apr | 16.8 °C | +3.3 °C | 39 mm | -21 mm |
| May | 20.3 °C | +2.6 °C | 38 mm | -33 mm |
| Jun | 25.6 °C | +4.5 °C | 65 mm | -1 mm |
| Jul | 24.7 °C | +1.5 °C | 90 mm | +30 mm |
| Aug | 25.9 °C | +3.0 °C | 48 mm | -17 mm |
| Sep | 18.9 °C | -0.2 °C | 153 mm | +91 mm |
| Oct | 13.8 °C | +0.1 °C | 96 mm | +29 mm |
| Nov | 9.1 °C | +1.6 °C | 55 mm | -23 mm |
| Dec | 6.8 °C | +2.6 °C | 31 mm | -56 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 Merchweiler?
Merchweiler has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 9.8 °C and it receives 829 mm of precipitation per year.
What is the hottest day ever recorded in Merchweiler?
The hottest day measured in Merchweiler between 1940 and 2025 was 5 July 2015, reaching 38.8 °C.
What is the coldest day in Merchweiler?
The coldest day measured in Merchweiler between 1940 and 2025 was 18 January 1940, at -20.7 °C.
Does it snow in Merchweiler?
Yes. Merchweiler gets on average 37.4 cm of snow per year and has around 63 frost days.
Has the climate of Merchweiler warmed?
Yes: Merchweiler warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Merchweiler?
The wettest day measured in Merchweiler between 1940 and 2025 was 11 May 1970, with 60 mm of rain in 24 hours.
What was the windiest day in Merchweiler?
The windiest day measured in Merchweiler between 1940 and 2025 was 26 December 1999, with winds reaching 63.2 km/h.
What is the warmest month in Merchweiler?
The warmest month in Merchweiler is July (18.6 °C on average); the coldest is January (1.0 °C).
How much does it rain in Merchweiler?
Merchweiler receives on average 829 mm of precipitation per year, spread over about 143 rainy days.
Is it sunny in Merchweiler?
Merchweiler gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.
What is the biggest single-day snowfall in Merchweiler?
The heaviest 24-hour snowfall measured in Merchweiler between 1940 and 2025 was 29 December 2001, with 15.1 cm.
Are there tropical nights in Merchweiler?
Yes: Merchweiler has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Merchweiler?
In Merchweiler, between 1940 and 2025, the highest apparent temperature reached 38.4 °C on 6 July 1952, and the lowest was -25.9 °C on 20 December 2009.
Compare Merchweiler with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Merchweiler