Siglufjörður Weather in December
Thinking of visiting Siglufjörður in December? Expect low temperatures reaching 3°C (37°F) during the day, dropping to -2°C (28°F) at night, and note that quite a bit of snow/rainfall is likely.
Rainfall in Siglufjörður in December
Expect around 18 days of snow/rain based on historical data, with 136 mm (5.4 in) average. 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 Siglufjörður in December
Siglufjörður in December gets highs of 3°C (37°F) during the day and drops to -2°C (28°F) at night. Time outdoors is usually more comfortable with proper winter clothing and protection from wind. With overnight lows of -2°C (28°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. You will probably experience very cold weather in this month, so dressing warmly is vital. Be sure to prepare for the chill with the right clothing.
Sunshine in Siglufjörður in December
This month is characterized by fewer sunny days, with about 0 hours of sunshine. It's great for those who appreciate cooler, less sunny days.December in Siglufjörður 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 Siglufjörður's climate page.
Siglufjörður Temperature in December
Min Temperature
-2°C (28°F)
Max Temperature
3°C (37°F)
Chance of Rain
61%
Precipitation
136 mm (5.4 in)
Rainy days
18 days
Humidity
79% *
Sunshine
0 hours *
Percentage Sunshine
18% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Siglufjörður typically stay consistent throughout December, with daily highs averaging around 3°C (37°F). Nights are very cold, with lows typically ranging from -7°C (19°F) to -3°C (27°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 Siglufjörður in December
Browse day-by-day weather records for Siglufjörður spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Siglufjörður historical weather extremes in December
Based on 49 years of weather observations in Siglufjörður between 1976 and 2025, these are the recorded extremes.
- The hottest December day on record in Siglufjörður reached 14°C (57°F) (December 24, 2025).
- The wettest day in December Siglufjörður was on December 10, 2019 with 32 mm (1.3 in) of precipitation.
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
pleasant
tolerable
unpleasant
poor
What to Wear in Siglufjörður in December
We recommend to layer up for chilly conditions in Siglufjörður in December. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. With limited sunshine expected, sunglasses aren't a priority for packing.What To Do in Siglufjörður 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 Siglufjörður's climate page.
Temperature Rainfall Sunshine Humidity
See the full Siglufjörður climate overview or explore weather in Iceland.
