Grenå climate — normals and trends
Grenå (Denmark) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.6 °C and it receives 675 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 August (16.8 °C on average) and the coldest is February (1.3 °C). Rainfall peaks in October.
Grenå averages 36 frost days, 0 hot days (≥ 30 °C) and 132 rainy days per year.
Grenå has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 55 to 17 per year over the period.
The hottest day of the period reached 24.9 °C (on 31 July 2018) and the coldest -14.1 °C (on 25 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
GrenåCentral Jutland
- coords
- 56.42°, 10.88°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
8.6°C
Average daily high
9.8°C
Average daily low
7.7°C
Annual rainfall
675mm
Sunshine / day
8.2h
Mean relative humidity
81%
Average peak wind
33.1km/h
Seasonal range
15.5°C
Frost days (< 0 °C)
36 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
132 d/yr
Annual snowfall
49.0 cm
Average feels-like high
6.0 °C
Average feels-like low
2.4 °C
Average peak gust
45.1 km/h
Tropical nights (≥ 20 °C)
1 d/yr
Solar radiation
10.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.50 · 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
24.9 °C
31 July 2018
Coldest day
-14.1 °C
25 January 1942
Wettest day
64 mm
28 August 2022
Windiest day
85.6 km/h
6 November 1985
Strongest gust
133.6 km/h
24 November 1981
Hottest feels-like
27.3 °C
25 July 2018
Coldest feels-like
-25.0 °C
25 January 1942
Snowiest day
16.8 cm
11 February 1952
Sunniest day
17.0 h
18 June 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 | 5.1 °C | +2.3 °C | 70 mm | +12 mm |
| Feb | 3.2 °C | +0.9 °C | 20 mm | -23 mm |
| Mar | 6.5 °C | +2.8 °C | 23 mm | -18 mm |
| Apr | 10.0 °C | +3.2 °C | 20 mm | -19 mm |
| May | 13.3 °C | +1.8 °C | 40 mm | -5 mm |
| Jun | 16.7 °C | +1.0 °C | 58 mm | +5 mm |
| Jul | 19.8 °C | +1.9 °C | 87 mm | +27 mm |
| Aug | 18.7 °C | +0.7 °C | 47 mm | -21 mm |
| Sep | 17.2 °C | +1.8 °C | 67 mm | +1 mm |
| Oct | 12.6 °C | +1.3 °C | 106 mm | +35 mm |
| Nov | 8.6 °C | +1.3 °C | 66 mm | -4 mm |
| Dec | 7.3 °C | +2.8 °C | 58 mm | -5 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 Grenå?
Grenå has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.6 °C and it receives 675 mm of precipitation per year.
What is the hottest day ever recorded in Grenå?
The hottest day measured in Grenå between 1940 and 2025 was 31 July 2018, reaching 24.9 °C.
What is the coldest day in Grenå?
The coldest day measured in Grenå between 1940 and 2025 was 25 January 1942, at -14.1 °C.
Does it snow in Grenå?
Yes. Grenå gets on average 49.0 cm of snow per year and has around 36 frost days.
Has the climate of Grenå warmed?
Yes: Grenå warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Grenå?
The wettest day measured in Grenå between 1940 and 2025 was 28 August 2022, with 64 mm of rain in 24 hours.
What was the windiest day in Grenå?
The windiest day measured in Grenå between 1940 and 2025 was 6 November 1985, with winds reaching 85.6 km/h.
What is the warmest month in Grenå?
The warmest month in Grenå is August (16.8 °C on average); the coldest is February (1.3 °C).
How much does it rain in Grenå?
Grenå receives on average 675 mm of precipitation per year, spread over about 132 rainy days.
Is it sunny in Grenå?
Grenå gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Grenå?
The heaviest 24-hour snowfall measured in Grenå between 1940 and 2025 was 11 February 1952, with 16.8 cm.
Are there tropical nights in Grenå?
Yes: Grenå has on average 1 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Grenå?
In Grenå, between 1940 and 2025, the highest apparent temperature reached 27.3 °C on 25 July 2018, and the lowest was -25.0 °C on 25 January 1942.
Compare Grenå with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Grenå