Keflavík Weather in January
Keflavík in January sees low daytime temperatures of 5°C (41°F) and nighttime lows of 1°C (34°F). Rainfall is fairly high this month at around 135 mm (5.3 in), so pack a rain jacket to stay dry.
Rainfall in Keflavík in January
You can expect rain on roughly 19 days based on historical data, averaging 135 mm (5.3 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in Keflavík in January
In January, Keflavík gets low temperatures, with highs of 5°C (41°F). Nights cool to around 1°C (34°F). Expect a distinctly cold feel throughout the day, not just overnight. With lows around 1°C (34°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep. The month brings very cold weather, so dressing warmly is essential. Prepare with multiple layers for added warmth.
Sunshine in Keflavík in January
With limited sunshine this month, there are about 20 hours of sun. It's ideal for those who prefer a cooler, cloudier climate.January in Keflavík can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options 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 Keflavík's climate page.
Keflavík Temperature in January
Min Temperature
1°C (34°F)
Max Temperature
5°C (41°F)
Chance of Rain
63%
Precipitation
135 mm (5.3 in)
Rainy days
19 days
Humidity
78% *
Sunshine
20 hours *
Percentage Sunshine
12% *
Daily Historical Temperatures
51-year average (1976-2026)
Based on our historical records, temperatures in Keflavík typically stay consistent throughout January, with daily highs averaging around 5°C (41°F). Nights are very cold, with lows around -2°C (28°F).
Average temperatures in January
Daily Historical Precipitation
51-year average (1976-2026)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in January
Historical weather for Keflavík in January
Browse day-by-day weather records for Keflavík spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Keflavík historical weather extremes in January
Based on weather observations in Keflavík between 1976 and 2025, these are the recorded extremes during January.
- The hottest January day on record in Keflavík reached 9°C (48°F) (January 3, 2019).
- The coldest January day was on January 15, 1981, with a maximum of -8°C (18°F).
- Keflavík registered its coldest January night on January 23, 1988, with temperatures dropping to -13°C (9°F).
Best Places in Iceland in January
Find out more about the weather in Iceland and which places have the best travel conditions in this month. See all of Iceland in January →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Keflavík in January
We recommend to layer up for chilly conditions in Keflavík in January. 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. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Keflavík in January
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 Keflavík's climate page.
Temperature Rainfall Sunshine Humidity
See the full Keflavík climate overview or explore weather in Iceland.
