Jan · Feb
East-coast wind + mountain snow/ice variables
Avg low -8 to -4°C / high 1–6°C (mountain areas can feel colder) · Snow/rain days: 5–9 per month / 25–55 mm
- • Sea breeze can make it feel colder than the number suggests.
- • Seoraksan areas often add snow/ice variables.
- • Exposed viewpoints feel colder if you linger.
Suggested outfits
- · Puffer/thick coat
- · Warm inner layers
- · Gloves/scarf for wind
A note for travelers
In winter, check both coastal wind and mountain surface conditions.
Mar · Apr
Spring transition: breeze and elevation swings
Avg low 0–9°C / high 10–18°C · Rainy days: 6–10 per month / 45–100 mm
- • Afternoons can feel mild; breezes cool exposed routes.
- • Mountain/valley routes can feel cooler than town.
- • Rain plus wind can feel chillier than expected.
Suggested outfits
- · Trench/light jacket
- · Sweatshirts/shirts/light knits
- · Comfortable walking shoes
A note for travelers
In spring, keep one layer for mountains and after-sunset breeze.
May · Jun
Pleasant May; June adds monsoon rain and sea fog
Avg low 10–18°C / high 18–25°C · Rainy days: 7–12 per month / 60–160 mm
- • May often feels ideal for walking.
- • June brings more rain and occasional sea fog that hides views.
- • Wet paths can feel slippery.
Suggested outfits
- · Breathable tops
- · Light cardigan/wind layer
- · Umbrella + water-friendly footwear
A note for travelers
Early summer is easier when you prioritize route stability over views.
Jul · Aug
Humid summer with downpours and fog variables
Avg low 20–23°C / high 27–30°C · Rainy days: 9–13 per month / 150–260 mm (variable)
- • Humidity can feel heavy and drive fatigue.
- • Sea fog can close coastal views on some days.
- • Downpours can disrupt pacing.
Suggested outfits
- · Light summer clothing
- · Hat/sunscreen/small towel
- · Thin indoor layer
A note for travelers
Split the day: outdoors early/late, indoors at midday.
Sep · Oct
Comfort returns for both coast and mountains
Avg low 9–16°C / high 18–24°C · Rainy days: 4–9 per month / 45–130 mm
- • September can mix lingering warmth with cooler nights.
- • October clear days often feel best for views and walking.
- • Light layers help with day-to-night swings.
Suggested outfits
- · T-shirt + light outer (Sep)
- · Long sleeves/light knits (Oct)
- · Comfortable sneakers
A note for travelers
Autumn makes you walk more than planned—shoes matter.
Nov · Dec
Early winter: windier coast, colder mountain segments
Avg low -3–4°C / high 7–12°C · Snow/rain days: 4–8 per month / 25–70 mm
- • After sunset it cools quickly, and wind can sharpen the feel.
- • Seoraksan areas can add ice/snow variables earlier.
- • Rain can drop comfort and increase slipperiness.
Suggested outfits
- · Coat/puffer
- · Warm inner layers
- · Scarf
A note for travelers
How warm you dress depends on whether your day is more coast or more mountain.