Jeju climate
South Korea
First-time visitors often notice “tiring weather” before they label it as hot or cold in Jeju.
Jeju climate can look simple on averages, but travel comfort is often driven by humidity, wind, and rain.
Climate facts
Jan · Feb
Avg low 2–6°C / high 8–12°C (wind can drop the feel) · Wet days: 8–12 per month / 50–120 mm
Mar · Apr
Avg low 6–11°C / high 13–19°C · Rainy days: 8–11 per month / 70–150 mm
Sep · Oct
Avg low 16–20°C / high 22–27°C · Rainy days: 6–11 per month / 120–220 mm
Nov · Dec
Avg low 6–10°C / high 12–16°C · Rainy days: 8–12 per month / 60–140 mm
How it tends to feel for travel
In hotter periods, day-versus-night fatigue accumulates differently, changing how the climate feels.
When it tends to fit
- • Once you see the year-round pattern, it’s easier to judge whether a month fits your style.
- • If you revisit the city, separating “seasonal itineraries” can save a lot of planning time.
When it may not fit
- • If you rely only on averages, you may be surprised by variability (squalls, wind, indoor AC).
- • In monsoon-like periods, the more your itinerary depends on outdoor walking, the higher the risk.
- • If you’re fine with cold but hate damp chill, it can feel colder than you expect.
Outfit notes
This connects climate patterns to packing—without over-interpreting.
- • 🌬️ Baseline: Jeju is wind-shaped. Wind + wetness can drop perceived comfort sharply, especially in winter and spring.
- • ⛰️ Hallasan elevation: Mountain conditions can feel completely different from the city. If you plan Hallasan, carry one warmer layer than downtown suggests.
- • ❄️ Winter (2–12°C feel): Wind-resistant coat/puffer with warm layers is common. Rain happens—waterproofing helps.
It looks simple on paper, but the day-to-day texture can vary.
Explore Jeju
These pages are connected so you can compare conditions and decide for yourself.