Climate & Weather in South Korea
South Korea has a continental climate with four distinct seasons. Understanding the weather patterns helps with planning relocation and daily life.
Seasonal Overview
| Season | Months | Temperature | Conditions |
|---|---|---|---|
| Spring | Mar-May | 5°C-20°C | Dry, cherry blossoms, yellow dust |
| Summer | Jun-Aug | 25°C-35°C | Hot, humid, monsoon rains |
| Autumn | Sep-Nov | 10°C-20°C | Dry, clear skies, colorful foliage |
| Winter | Dec-Feb | -10°C-5°C | Cold, dry, occasional snow |
Spring (March-May)
Pros: Cherry blossoms (early April), mild temperatures, nature awakens
Cons: Yellow dust (황사) from China/Mongolia can cause poor air quality and health issues
Tip: Check air quality apps daily. Wear masks on high pollution days.
Summer (June-August)
Pros: Festivals, beach season, vibrant nightlife
Cons: Very humid (often 80%+), monsoon season (장마) brings heavy rain in July, typhoon risk
What to expect:
- Monsoon: 2-3 weeks of heavy rain in late June/July
- Typhoons: 1-2 may affect Korea July-September
- AC essential - nearly all buildings have it
- Cooling costs: ₩100,000-200,000/month
Autumn (September-November)
Pros: Best season! Clear skies, comfortable temperatures, beautiful fall foliage
Cons: Short - October is ideal but brief
Popular: Mountain hiking for autumn colors is a national pastime.
Winter (December-February)
Pros: Ski season, fewer tourists, cozy cafe culture
Cons: Cold (especially wind chill), dry air, heating costs
What to expect:
- Seoul regularly drops to -10°C or below
- Ondol (floor heating) is standard in Korean homes
- Heating costs: ₩150,000-300,000/month
- Less snow than you might expect in Seoul
- Layers are essential
Regional Variations
| City | Summer High | Winter Low | Notes |
|---|---|---|---|
| Seoul | 33°C | -12°C | Cold winters, hot summers |
| Busan | 30°C | -3°C | Milder, coastal |
| Jeju | 32°C | 3°C | Subtropical, warmest |
| Daegu | 35°C | -8°C | Hottest summers |
What to Pack
Year-round essentials:
- Layers (temperature varies greatly indoors/outdoors)
- Umbrella (rainy season + occasional showers)
- Good walking shoes
Winter must-haves:
- Heavy coat, thermal underwear
- Hat, gloves, scarf (wind chill is brutal)
- Moisturizer (very dry heated air)
Summer must-haves:
- Lightweight, breathable clothing
- Sunscreen, sunglasses
- Portable fan (many Koreans carry these)
Pro Tips
- •Autumn (Sep-Nov) is the best time to arrive - comfortable and beautiful
- •Yellow dust in spring requires masks and air quality monitoring
- •Summer is very humid - AC everywhere but be prepared for the adjustment
- •Winter heating costs can be significant - budget ₩150,000-300,000/month
- •Ondol (floor heating) means floors are warm but air can be dry in winter
Have questions about climate & weather in South Korea?