December verdict

Iceland in December

Weather score13Poor

Poor for holiday weather

Average highs are around 0°C, so pack for cooler days. Sunshine averages 0.3h per day, so this is not one of the brighter months. Rainfall averages 117mm, so some wet days are possible.

Reykjavik, Iceland, Iceland travel weather guide
Photo by Einar H. Reynis on Unsplash

December weather

Monthly averages

Temp

0°C

Rain

117mm

Sun

0.3h

Sea

7°C

Weather score

13

Poor

Seasonal climate calendar

TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score

Trip feel

Cool

Average highs are around 0°C, so pack for cooler days.

Showers

Rainfall averages 117mm, so some wet days are possible.

Limited sun

Sunshine averages 0.3h per day, so this is not one of the brighter months.

Cool sea

Sea temperatures average 7°C, so the water can feel cool.

Map

Weather map

Compare Iceland with nearby places by weather score, rain, sun, temperature, and swim conditions.

Temperature

View on map

December0°C average high

December has some of the coolest average daytime highs of the year, so pack for fresher conditions.

Warmest monthsJune to August

This stretch sets the upper range for average daytime heat.

December117mm average rain

December is wetter than Iceland's yearly average, so flexible plans matter more.

Driest monthsFebruary and April to September

This is the drier part of the year, when outdoor plans usually need less weather flexibility.

December0.3 hours average sun

December is one of Iceland's cloudier months, so sunshine-led plans are less reliable.

Brightest monthsMay to August

This stretch has the strongest sunshine in the monthly averages.

Sea temperature

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December7°C average sea

December is below Iceland's yearly sea-temperature average, so swimming can feel fresher.

Warmest seaJuly to September

Sea temperatures are usually near 11°C in this stretch, so swimming comfort is at its strongest.

Weather score

View on map

December13 weather score

December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.

Best weather monthsApril to September

These months have the strongest weather score in the monthly averages.

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