Hafnarfjördur Weather in December
Hafnarfjördur in December sees low daytime temperatures of 4°C (39°F) and nighttime lows of -2°C (28°F). Rainfall is fairly high this month at around 137 mm (5.4 in), so pack a rain jacket to stay dry.
Rainfall in Hafnarfjördur in December
Looking at the last 30 years, the data shows about 20 days with snow/rain, averaging 137 mm (5.4 in) for the month. Rain falls regularly this month and can be quite heavy when it does. Showers can be substantial, so waterproof gear is a good idea.
Temperature in Hafnarfjördur in December
In December, Hafnarfjördur sees low temperatures, with highs of 4°C (39°F). Nights drop to around -2°C (28°F). December is part of the winter season. Cold conditions tend to persist from morning through evening, so be prepared for winter weather. 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. This month is characterized by its cold weather, so make sure to wear sufficient layers to stay warm.
Sunshine in Hafnarfjördur in December
The month is characterized by fewer sunny days, with roughly 20 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.
Wind Speed in Hafnarfjördur 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 temperature is only 7°C (45°F) this month — cold enough that most people will want to stay out. Hardy swimmers may manage a quick dip, but it won't be comfortable.December in Hafnarfjördur has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations 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 Hafnarfjördur's climate page.
Hafnarfjördur 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
137 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 Hafnarfjördur 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 Hafnarfjördur in December
Browse day-by-day weather records for Hafnarfjördur spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Hafnarfjördur historical weather extremes in December
According to our 49 years of weather records for Hafnarfjördur, the following extremes were recorded between 1976 and 2025.
- Hafnarfjördur recorded its highest December temperature of 11°C (52°F) on December 14, 1997.
- On December 30, 2022, Hafnarfjördur saw its coldest December day with temperatures maxing out at -9°C (16°F).
- The lowest overnight temperature recorded in December was -14°C (7°F) (December 30, 2022).
- The heaviest December precipitation occurred on December 30, 2007, when 56 mm (2.2 in) of precipitation fell.
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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tolerable
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What to Wear in Hafnarfjördur 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. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Hafnarfjördur 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 Hafnarfjördur's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Hafnarfjördur climate overview or explore weather in Iceland.
