Kópavogur Weather in December
December in Kópavogur brings low temperatures, with daytime highs of 4°C (39°F) and nights around -2°C (28°F). Quite a bit of snow/rainfall is expected, around 138 mm (5.4 in), so pack an umbrella.
Rainfall in Kópavogur in December
Based on our climate data of the past 30 years, about 20 days of snow/rain are anticipated, with 138 mm (5.4 in) on average. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.
Temperature in Kópavogur in December
Temperatures in Kópavogur in December top out at 4°C (39°F) and drop to -2°C (28°F) overnight. The winter season is characteristic of December. Expect a distinctly cold feel throughout the day, not just overnight. Nights are well below freezing at -2°C (28°F). An extra blanket is a good idea if you feel the cold, especially in older or less well-heated accommodation. It is a very cold month, so be prepared and make sure to dress up warm. It's always better to be prepared than to find oneself shivering in the cold.
Sunshine in Kópavogur in December
The city usually sees around 20 hours of sunlight, indicating fewer sunny days.
Wind Speed in Kópavogur in December
December sees wind speeds averaging 6 m/s (12 knots). You'll experience strong winds that cause whole trees to sway and require effort when walking against them. As an average, expect variation from moderate breezes to particularly windy days that affect daily routines.
Average water temperature in December
The water sits at 7°C (45°F) this month, which is well below what most people consider swimmable. Wetsuits help, but expect it to still feel cold.December in Kópavogur can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Kópavogur's climate page.
Kópavogur Temperature in December
Min Temperature
-2°C (28°F)
Max Temperature
4°C (39°F)
Water Temperature
7°C (45°F) *
Chance of Rain
65%
Precipitation
138 mm (5.4 in)
Rainy days
20 days
Humidity
79% *
Windspeed
6 m/s (12 knots) *
Sunshine
20 hours *
Percentage Sunshine
15% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Kópavogur typically stay consistent throughout December, with daily highs averaging around 4°C (39°F). Nights are very cold, with lows typically ranging from -3°C (27°F) to 0°C (32°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Kópavogur in December
Browse day-by-day weather records for Kópavogur spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Kópavogur historical weather extremes in December
According to our 49 years of weather records for Kópavogur, the following extremes were recorded between 1976 and 2025.
- Kópavogur recorded its highest December temperature of 11°C (52°F) on December 14, 1997.
- On December 30, 2022, Kópavogur saw its coldest December day with temperatures maxing out at -9°C (16°F).
- The coldest night in December in Kópavogur was on December 30, 2022, with a minimum of -14°C (7°F).
- The wettest December day on record brought 56 mm (2.2 in) of precipitation to Kópavogur (December 30, 2007).
Best Places in Iceland in December
Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in December →
perfect weather
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What to Wear in Kópavogur in December
Cold weather calls for smart layering in December. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 7°C (45°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Kópavogur in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Iceland, check out our Kópavogur's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Kópavogur climate overview or explore weather in Iceland.
