Grindavík Weather in December
Grindavík in December sees low temperatures, with highs around 6°C (43°F) and overnight lows of 1°C (34°F). Rainfall is fairly high at around 142 mm (5.6 in) on average, so pack waterproofs just in case.
Rainfall in Grindavík in December
Typically, you can expect about 20 days of rain this month, with 142 mm (5.6 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 Grindavík in December
Expect highs of 6°C (43°F) in Grindavík in December, with nights dropping to around 1°C (34°F). Even at the warmest part of the day, temperatures stay low. Dressing warmly from the start is the sensible approach. Nights drop to 1°C (34°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.
Sunshine in Grindavík in December
The area sees fewer sunny days, with a projection of about 20 hours of sunshine. This reduced sunlight makes it ideal for those who prefer overcast conditions over bright sunny days.If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Grindavík. Our weather planner can help you explore destinations with more pleasant weather conditions.
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 Grindavík's climate page.
Grindavík Temperature in December
Min Temperature
1°C (34°F)
Max Temperature
6°C (43°F)
Chance of Rain
68%
Precipitation
142 mm (5.6 in)
Rainy days
20 days
Humidity
79% *
Sunshine
20 hours *
Percentage Sunshine
15% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Grindavík typically stay consistent throughout December, with daily highs averaging around 6°C (43°F). Nights are very cold, with lows typically ranging from -2°C (28°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 Grindavík in December
Browse day-by-day weather records for Grindavík spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Grindavík historical weather extremes in December
Our historical data for Grindavík spans 1976 to 2025, revealing these weather extremes.
- On December 11, 2009, temperatures climbed to 10°C (50°F), marking the warmest December day on record.
- The lowest daytime temperature in December was -8°C (18°F), recorded on December 30, 2022.
- Nighttime temperatures dropped to -13°C (9°F) on December 30, 2022, marking the coldest December night on record.
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
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What to Wear in Grindavík in December
Dress warmly and in layers for your trip to Grindavík in December. A good base layer system works wonders. Start with good thermal underwear, add something warm like a fleece sweater, then finish with a waterproof jacket on top. Expect heavy rainfall, so bring good rain protection and waterproof bags. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Grindavík 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 Grindavík's climate page.
Temperature Rainfall Sunshine Humidity
See the full Grindavík climate overview or explore weather in Iceland.
