Garðabær, Iceland — Weather in December 2026

Climate Overview

Garðabær, Iceland in December has cold conditions, with highs averaging around 1°C (34°F). Rain falls on about 16 days this month, totalling around 110 mm. Sea temperature stays cool at 4.3°C (40°F).

This month falls at the beginning of Winter. Cold conditions dominate the month.

Daily highs in December gradually drop from around 2°C (35°F) at the start to -1°C (30°F) by month's end.

December sees fairly even rainfall, totalling about 109 mm across the month.

Expect around 1.6h of sunshine at the start of December, decreasing to 1.1h by the end.

The warmest days tend to fall around the 1th, averaging 2.5°C (37°F).

Compared to November, this month is about 2°C cooler with 2 more rainy days.

Monthly December Averages

Temperature

1°C / -3°C

Feels Like

-4°C / -8°C

Rain

16 days · 110 mm

Sunshine

1.1h / day

Humidity

83% — Very Humid

Wind

23 km/h

Wind Direction

ENE (76°)

Gusts

50 km/h

Daylight

4.4 h

Cloud Cover

73%

Clear Sky Days

1.7

UV Index

0.1 — Low

Sea Temperature

4°C

Dew Point

-4°C — Dry

Moon Phase

Waxing Crescent · 31%

Snow Days

13 days · 25.8 cm

Frost Days

21 days

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 11:16

Daylight 4.3h

Sunset 15:32

What to Expect

Cold daytime highs of 1°C (34°F) mean shorter outdoor excursions with warming breaks. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	1°C / -4°C	-4°C / -10°C	18days (127 mm) Wet	1.4h Poor	82% Humid	0.2 Low	Wet	View Details
February	2°C / -3°C	-3°C / -8°C	18days (131 mm) Wet	3.5h Poor	83% Humid	0.8 Low	Wet	View Details
March	3°C / -2°C	-1°C / -7°C	18days (118 mm) Wet	6.6h Fair	79% Humid	1.8 Low	Wet	View Details
April	7°C / 1°C	3°C / -3°C	15days (109 mm) Wet	8.7h Good	79% Humid	3.2 Moderate	Poor	View Details
May	10°C / 4°C	7°C / 0°C	18days (109 mm) Wet	10.9h Excellent	78% Humid	3.9 Moderate	Wet	View Details
June best	12°C / 7°C	10°C / 4°C	15days (86 mm) Wet	10.8h Excellent	79% Humid	4.1 Moderate	Fair	View Details
July best	15°C / 9°C	13°C / 7°C	14days (73 mm) Wet	10.5h Excellent	81% Humid	3.9 Moderate	Fair	View Details
August best	14°C / 9°C	12°C / 6°C	14days (90 mm) Wet	9.5h Good	82% Humid	3.2 Moderate	Fair	View Details
September	11°C / 6°C	8°C / 2°C	18days (133 mm) Wet	7.2h Good	85% Humid	2.2 Moderate	Wet	View Details
October	7°C / 3°C	3°C / -2°C	17days (127 mm) Wet	4.5h Fair	86% Very Muggy	1 Low	Poor	View Details
November	3°C / -1°C	-1°C / -5°C	14days (102 mm) Wet	1.9h Poor	85% Humid	0.4 Low	Poor	View Details
December	1°C / -3°C	-4°C / -8°C	16days (110 mm) Wet	1.1h Poor	83% Humid	0.1 Low	Poor	View Details

What to Wear

Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Warm coatThermal base layersScarf & glovesUmbrellaWaterproof jacketWaterproof shoes

Frequently Asked Questions

Expand all

Is December a good time to visit Garðabær?

December is typically poor for visiting Garðabær, with average highs of 1°C (34°F) and around 16 rainy days. Garðabær, Iceland in December has cold conditions, with highs averaging around 1°C (34°F). Rain falls on about 16 days t

Does it rain a lot in Garðabær in December?

Garðabær typically sees around 16 rainy days in December with 110 mm (4.3 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Garðabær in December?

Yes, nights in Garðabær during December are cold, averaging -3°C (26°F). Pack warm layers and a coat for evenings.

What should I pack for Garðabær in December?

With highs of 1°C (34°F) and lows of -3°C (26°F) in December, we recommend: Warm coat, Thermal base layers, Scarf & gloves, Umbrella, Waterproof jacket. Comfortable walking shoes are essential.

Is December among the best months weather-wise in Garðabær?

December is not the most favourable month weather-wise in Garðabær. Consider visiting during months with milder temperatures or less rainfall for a better experience.

What is the UV index in Garðabær in December?

The average UV index in Garðabær during December is 0 (low). No special sun protection is needed.

How many hours of daylight are there in Garðabær in December?

Garðabær gets approximately 4 hours of daylight per day in December, with around 1 hours of sunshine.

Does it snow in Garðabær in December?

Yes, Garðabær typically sees around 13 snow days in December with roughly 26 cm (10 in) of snowfall.

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