Blue Lagoon Weather in January
January in Blue Lagoon typically sees daytime highs of 5°C (41°F) and nighttime lows of 1°C (34°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Blue Lagoon in January
The climate data from previous years indicates about 19 days of rain, averaging 138 mm (5.4 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 Blue Lagoon in January
Temperatures in Blue Lagoon in January top out at 5°C (41°F) and drop to 1°C (34°F) overnight. Cold conditions persist throughout the day, so warm clothing is important from the moment you head outside. Nights fall to 1°C (34°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Blue Lagoon in January
The city usually sees around 20 hours of sunlight, indicating fewer sunny days.If you're looking for dry conditions and comfortable temperatures, January may not be the ideal month to visit Blue Lagoon. 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 Blue Lagoon's climate page.
Blue Lagoon Temperature in January
Min Temperature
1°C (34°F)
Max Temperature
5°C (41°F)
Chance of Rain
64%
Precipitation
138 mm (5.4 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 Blue Lagoon 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 Blue Lagoon in January
Browse day-by-day weather records for Blue Lagoon spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Blue Lagoon historical weather extremes in January
According to our 49 years of weather records for Blue Lagoon, the following extremes were recorded between 1976 and 2025.
- On January 3, 2019, temperatures climbed to 9°C (48°F), marking the warmest January day on record.
- On January 15, 1981, Blue Lagoon saw its coldest January day with temperatures maxing out at -8°C (18°F).
- The coldest night in January in Blue Lagoon was on January 15, 1981, with a minimum of -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
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What to Wear in Blue Lagoon in January
Cold weather calls for smart layering in January. A thermal base layer makes a huge difference in staying warm. Add a wool sweater or fleece, then a wind-resistant outer jacket. Prepare for significant rainfall with proper waterproof clothing and shoes. Sunglasses aren't essential this month, though you might want them for the occasional bright moment.What To Do in Blue Lagoon 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 Blue Lagoon's climate page.
Temperature Rainfall Sunshine Humidity
See the full Blue Lagoon climate overview or explore weather in Iceland.
