Based on the search results provided, here's what you can expect for Jeju Island travel throughout 2026: ## Weather Overview by Season **Winter (December-February): 5-10°C average**[1] Winter offers **cold but manageable temperatures**, rarely dropping below freezing.[1] This is the **cheapest and quietest time to visit**, ideal for avoiding crowds.[1] However, **Mount Hallasan may be inaccessible** due to snow and ice conditions.[1] February specifically sees daytime temperatures around 3-9°C with occasional snow mixed with rain.[2][3] **Spring (March-May): 11-21°C average**[3] Spring brings **mild, comfortable weather** perfect for hiking with less rainfall.[1] Daytime temperatures range from 12-18°C with cooler evenings.[5] This season offers **stunning sunrises and lower humidity**.[1] **Summer (June-August): 25-31°C average**[3] Summer is the **warmest season** with July and August ideal for beaches.[1] The sea temperature reaches its highest, perfect for swimming.[1] However, expect **significant rainfall and high humidity**, making strenuous activities like hiking uncomfortable.[1] **Autumn (September-November): Mild temperatures**[1] Autumn provides **comfortable weather with less rainfall**, creating stunning conditions.[1] This is an **ideal time for watching the famous Haenyeo free-divers**, offering cultural insights.[1] November specifically was noted as near-perfect by travelers, with little tourism, mostly sunny days, and minimal rainfall.[1] ## Travel Advantages by Season **Best for budget travelers:** Winter (December-February) offers cheaper car rentals, activities, and flights.[1] **Best for hiking & sightseeing:** Spring and autumn provide ideal conditions with comfortable temperatures and less humidity.[1] **Best for beach activities:** Summer, particularly July-August, offers warmest sea temperatures.[1] **Best for avoiding crowds:** Winter months, especially December-February.[1]
