Seoul Weather Monthly Guide: What to Pack and Expect Year-Round

Seoul Weather Monthly Guide: What to Pack and Expect Year-Round

Hey! After three years here, I've learned that Seoul's weather is basically *four very distinct personalities*. Let me break down what you're actually dealing with month by month, because honestly, the weather can catch you off guard if you don't know what's coming.

Winter (December-February): Prepare for COLD and DRY

January & February are brutal. We're talking -5°C to 5°C, sometimes lower with wind chill. The air gets *really* dry — invest in a humidifier (around 30,000-80,000 KRW at GS25 or Lotte Mart). Pack thermal layers, thick coats, and good boots. The streets don't get salty or slushy like some places, so regular winter boots work fine.

December is milder (0-10°C), kind of the "transition month" where you might still get away with a heavy hoodie some days.

Spring (March-May): The Goldilocks Season

This is when I actually want to go outside. March starts chilly (5-15°C), but April and May are perfect — 15-25°C with sunshine. Everyone's out at the Han River Parks (무료!) in April.

Important note: April brings the yellow dust (황사) from China. Download the AirKorea app or check Naver Weather for daily air quality. On bad days, grab a KF94 mask from any convenience store (3,000-5,000 KRW).

Summer (June-August): Hot, Humid, MONSOON Season

June starts with the rainy season (장마), and it doesn't mess around. June-July can be 25-30°C with 80%+ humidity. Pack light, breathable clothes and a compact umbrella — the rainfall is heavy but usually comes in bursts.

August is the peak heat — 28-35°C. Get yourself an iced coffee (2,500-4,500 KRW at any cafe) and learn which cafes have the best AC. Seriously, this is crucial. Convenience store ice cream is around 2,000-3,500 KRW and hits different in August.

The humidity can trigger mold in apartments, so run your air conditioner's dry mode (제습 모드) regularly.

Fall (September-November): Another Great Season

September is technically still summer (25-30°C and humid), but October and November are *chef's kiss* — 10-20°C, crisp air, clear skies.

Late October/Early November brings autumn foliage. If you're planning temple stays or hiking (Bukhansan is amazing), this is your window.

Typhoon Season (August-September)

This deserves its own mention. Typhoons (태풍) can hit suddenly with zero warning. Check weather apps obsessively from July onwards. When one's coming, convenience stores run out of supplies within hours. Stock up on instant ramyeon and water just in case.

My Honest Packing Guide

Must-haves year-round:

• Umbrella (critical!)
• Hand cream (15,000-30,000 KRW) — winter dries out your skin
• Sunscreen
• Comfortable walking shoes (you'll do 15,000+ steps daily)

Apps that saved my life:

• Naver Weather or Weather app for hourly forecasts
• AirKorea for air quality
• Coupang (쿠팡) for emergency shopping when weather surprises you

Helpful Resources

Seoul's Korea Meteorological Administration (기상청) has an English website, but honestly, Naver Weather's English version is clearer. Most apartments come with air conditioning units, but if you're in an older place, a portable AC unit costs around 300,000-500,000 K