December · Iceland
Best time to visit Blue Lagoon in December Weather, crowds & prices
Weather in Blue Lagoon in December
Average temperature 0°C, 124 mm of rain, about 0 days with 6+ hours of sunshine and 87% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
1.8/10
Ranked #11 of 12 months
- Avg temp
- 0°C
- Rainfall
- 124 mm
- Humidity
- 87%
- Days with 6h+ sun
- 0
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
December in Blue Lagoon scores 1.8/10 for nature and wildlife travel - ranked #11 of 12. Expect around 0°C, 124 mm of rain, and roughly 0 days with 6+ hours of sunshine this month.
Milky geothermal waters in a black lava field, striking year-round against cool Icelandic air.
December in Blue Lagoon — the hardest end of the year
At 0°C (31°F) this is proper winter weather in December: layer up and split the day between outdoor highlights and indoor stops.
124 mm of water-equivalent precipitation makes this a snowy month at resort level; what falls stays as snow, with almost no days with 6+ hours of sunshine and 3.8 hours of daylight.
That is 1.8/10 on the same scale — 11th of 12 months, versus 7.7/10 for the best month here.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella, footwear you can get muddy.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, July is materially better in Blue Lagoon — 5.9 points higher on the same scale.
Frequently asked
- What is the weather like in Blue Lagoon in December?
- In December, Blue Lagoon averages 0°C, 124 mm of rain, and about 0 days with 6+ hours of sunshine. Its climate-comfort score is 1.8/10.
- Is December a good time to visit Blue Lagoon?
- December earns a 1.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Blue Lagoon in December?
- Expect about 124 mm of rain in December. Average humidity is 87% and there are about 0 days with 6+ hours of sunshine.
Curated in Blue Lagoon
Tickets & experiences
Things to do in Blue Lagoon
Blue Lagoon, Iceland. Live activities and tours from GetYourGuide, matched to this destination.