Garðabaer climate — normals and trends
Garðabaer (Iceland) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 4.2 °C and it receives 1,323 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 (10.9 °C on average) and the coldest is January (-1.3 °C). Rainfall peaks in October.
Garðabaer averages 127 frost days, 0 hot days (≥ 30 °C) and 200 rainy days per year.
Garðabaer has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.
The number of frost days there went from about 154 to 100 per year over the period.
The hottest day of the period reached 24.6 °C (on 30 July 2008) and the coldest -27.1 °C (on 7 February 1969).
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
GarðabaerCapital Region
- coords
- 64.09°, -21.92°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
4.2°C
Average daily high
6.6°C
Average daily low
1.7°C
Annual rainfall
1,323mm
Sunshine / day
7.0h
Mean relative humidity
80%
Average peak wind
21.7km/h
Seasonal range
12.2°C
Frost days (< 0 °C)
127 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
200 d/yr
Annual snowfall
180.8 cm
Average feels-like high
2.8 °C
Average feels-like low
-2.5 °C
Average peak gust
47.2 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
8.3 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.1 °C
since 1940
+0.3 °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
24.6 °C
30 July 2008
Coldest day
-27.1 °C
7 February 1969
Wettest day
50 mm
16 March 1969
Windiest day
74.1 km/h
3 February 1991
Strongest gust
164.2 km/h
16 February 1981
Hottest feels-like
25.1 °C
31 July 1980
Coldest feels-like
-32.5 °C
7 February 1969
Snowiest day
21.8 cm
30 January 1952
Sunniest day
19.6 h
22 June 1942
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 1.1 °C | 0.0 °C | 142 mm | +15 mm |
| Feb | 5.3 °C | +3.6 °C | 159 mm | +42 mm |
| Mar | 5.3 °C | +2.6 °C | 159 mm | +41 mm |
| Apr | 7.5 °C | +2.1 °C | 63 mm | -40 mm |
| May | 10.8 °C | +1.6 °C | 78 mm | -17 mm |
| Jun | 10.6 °C | -1.1 °C | 85 mm | -3 mm |
| Jul | 13.7 °C | +0.4 °C | 89 mm | +7 mm |
| Aug | 13.5 °C | +0.6 °C | 95 mm | -6 mm |
| Sep | 11.2 °C | +1.2 °C | 163 mm | +42 mm |
| Oct | 6.2 °C | -0.1 °C | 139 mm | +10 mm |
| Nov | 3.2 °C | 0.0 °C | 49 mm | -68 mm |
| Dec | 5.2 °C | +3.6 °C | 105 mm | -20 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 Garðabaer?
Garðabaer has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 4.2 °C and it receives 1,323 mm of precipitation per year.
What is the hottest day ever recorded in Garðabaer?
The hottest day measured in Garðabaer between 1940 and 2025 was 30 July 2008, reaching 24.6 °C.
What is the coldest day in Garðabaer?
The coldest day measured in Garðabaer between 1940 and 2025 was 7 February 1969, at -27.1 °C.
Does it snow in Garðabaer?
Yes. Garðabaer gets on average 180.8 cm of snow per year and has around 127 frost days.
Has the climate of Garðabaer warmed?
Yes: Garðabaer warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Garðabaer?
The wettest day measured in Garðabaer between 1940 and 2025 was 16 March 1969, with 50 mm of rain in 24 hours.
What was the windiest day in Garðabaer?
The windiest day measured in Garðabaer between 1940 and 2025 was 3 February 1991, with winds reaching 74.1 km/h.
What is the warmest month in Garðabaer?
The warmest month in Garðabaer is July (10.9 °C on average); the coldest is January (-1.3 °C).
How much does it rain in Garðabaer?
Garðabaer receives on average 1,323 mm of precipitation per year, spread over about 200 rainy days.
Is it sunny in Garðabaer?
Garðabaer gets on average 7.0 hours of sunshine per day, roughly 2,555 hours per year over 1940-2025.
What is the biggest single-day snowfall in Garðabaer?
The heaviest 24-hour snowfall measured in Garðabaer between 1940 and 2025 was 30 January 1952, with 21.8 cm.
Are there tropical nights in Garðabaer?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Garðabaer.
What was the most extreme apparent temperature in Garðabaer?
In Garðabaer, between 1940 and 2025, the highest apparent temperature reached 25.1 °C on 31 July 1980, and the lowest was -32.5 °C on 7 February 1969.
Compare Garðabaer with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Garðabaer