December in Jeju Island offers a unique blend of mild temperatures and distinctive atmospheric conditions. Expect daytime highs averaging between 8-13C (46-55F), with nighttime lows dipping to 3-8C (37-46F). Rainfall is relatively low compared to other months, but occasional showers are possible. The island’s coastal location means it experiences varying wind conditions, sometimes strong, particularly in northern areas. Snowfall is also a possibility, occasionally blanketing the volcanic landscapes, especially at higher elevations like Hallasan Mountain.
Understanding these climatic conditions is crucial for travelers planning a December visit. Appropriate clothing choices, including layers, waterproof outerwear, and sturdy footwear, are essential for comfortable exploration. The cooler temperatures and potential for inclement weather create a unique ambiance, ideal for experiencing the island’s natural beauty in a different light. The dormant volcanic landscapes dusted with snow, combined with the invigorating sea air, offer a distinct charm. Historically, December marks a quieter period on the island, allowing for a more tranquil experience compared to peak seasons.