Garðabær Temperature by Month
Garðabær, Capital Region, Iceland has an average annual maximum temperature of 9°C (48°F), ranging from 4°C (39°F) in February to 16°C (61°F) in July. Below you'll find a full monthly breakdown and a comparison with cities worldwide.
Garðabær Monthly Temperatures
In Garðabær, temperatures can shift dramatically between mild in summer and cold in winter. Nights follow the same pattern, with lows ranging from 9°C (48°F) in July to -3°C (27°F) in February.
The chart below illustrates the average maximum day and minimum night temperatures in Garðabær by month:
Low temperatures are most often recorded between 4 AM and 6 AM, while highs typically occur around 3 PM. July, the city's warmest month, sees 168 hours of sunshine.
The chart below shows the average temperature throughout the year:
Daily Historical Temperatures
50-year average (1976-2025)
Average high and low temperatures for each day of the month based on long-term records.
Average temperatures in June
Historical Garðabær Temperatures: 1976-2026
Browse day-by-day temperature records for Garðabær spanning 51 years. Select any month and year to see actual high and low temperatures recorded on each day.
Temperature: Garðabær vs Iceland
The map below shows the annual temperature across Iceland. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Garðabær vs World: Temperature Compared
Garðabær's average annual maximum temperature is 9°C (48°F). To put that in context, here's how it compares to a few well-known destinations:
Rome, Italy averages 20°C (68°F) annually, with reliably warm summers and comfortable winters.
Queenstown, New Zealand averages 10°C (50°F) annually — remember seasons are flipped, so its coldest months fall in June and July.
Buenos Aires, Argentina averages 23°C (73°F) a year, with hot summers and mild winters — and seasons reversed compared to Europe.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Garðabær?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Garðabær, February is the coolest month, with average highs of 4°C (39°F) and humidity around 79% — considered high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round — large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.
For more on Garðabær's weather — including monthly rainfall, sunshine hours, and humidity — visit our Garðabær climate page.
