Reykjavik Weather in January
Iceland · Subarctic climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
January in Reykjavik sees average temperatures ranging from a low of -2.9°C (26.8°F) to a high of 1.6°C (34.9°F), with a mean of -0.5°C (31.1°F). Compared to the annual average of 4.5°C (40.1°F), this month is 5.0°C cooler than the yearly norm. Precipitation averages 156.7mm, making it approximately 26.0mm wetter than the monthly average of 130.0mm. This is the wettest month of the year, with 156.7mm of precipitation and around 14.4 rainy days. The city receives an average of 1.4 hours of sunshine per day during January, with relative humidity averaging 76.6%. Wind speeds reach an average maximum of 28.0 km/h. Snowfall averages 39.4cm during January, which can affect travel plans and outdoor activities. For travelers, this month offers a temperature experience in Reykjavik, with wetter-than-average conditions compared to the rest of the year.
Planning around Reykjavik's daylight is more important than temperature. I was there in June and the midnight sun meant I could hike at 11pm — disorienting but incredible. December gives you about 4 hours of daylight, which limits outdoor plans severely. The data shows mild temperatures for the latitude (rarely below -5°C thanks to the Gulf Stream), but wind chill is the real factor. Pack windproof everything, regardless of season.
January vs Adjacent Months
| Metric | December | January | February |
|---|---|---|---|
| Mean Temp | -1.0°C (30.2°F) | -0.5°C (31.1°F) | 0.0°C (32.0°F) |
| Rainfall | 131.0mm | 156.7mm | 145.4mm |
| Sunshine | 0.7 hrs | 1.4 hrs | 3.1 hrs |
| Humidity | 76.8% | 76.6% | 78.2% |
| Wind | 24.2 km/h | 28.0 km/h | 26.9 km/h |
| Rainy Days | 11.8 | 14.4 | 12.4 |
| Snowfall | 48.3 cm | 39.4 cm | 51.1 cm |
Seasonal Context
January falls in Winter in the Northern Hemisphere. Winter is the coolest season with the shortest daylight hours. For travelers visiting Reykjavik in January, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Reykjavik in January?
The average temperature in Reykjavik during January ranges from -2.9°C (26.8°F) to 1.6°C (34.9°F), with a mean of -0.5°C (31.1°F).
How much does it rain in Reykjavik in January?
Reykjavik receives an average of 156.7mm of precipitation in January, spread across approximately 14.4 rainy days. This is the wettest month of the year.
What should I pack for Reykjavik in January?
Based on January weather data, pack heavy winter clothing, thermal layers, and a warm coat. Rain gear is essential — this month averages 156.7mm of precipitation.
Is January a good time to visit Reykjavik?
January is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Reykjavik
Cities with Similar January Climate (Subarctic)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: 64.15°, -21.94°. Timezone: Atlantic/Reykjavik. Last updated: 2026-07-30.