What is the weather like in Seoul throughout the year?

Seoul experiences varying weather throughout the year. The warmest month is August with average highs of 29°C. The coolest month is January.

What is the weather like in Seoul in May?

Seoul in May scores 67/100 based on 30 years of climate data. Recommended for planning your trip.

Who should visit Seoul in May?

May in Seoul is ideal for: Families with children, Elderly travelers, Outdoor enthusiasts, Cultural tourists, Honeymoon couples.

Best Time to Visit Seoul | 30-Year Weather Analysis

Why May is the Best Time to Visit Seoul

Is May a Good Time to Visit Seoul?

👍Recommended for planning your trip(67/100)

Short Answer

May is excellent for visiting Seoul: comfortable 23°C temperatures, only 21% rain risk, and 9.7h of daily sunshine create ideal conditions for exploration.

Decision Factors

Vaccinations required

Yellow Fever

Ideal temperature range

22.5°C - perfect for sightseeing and outdoor activities

Health precautions needed

Be aware of: Leptospirosis, Avian/Bird Flu, Hantavirus

Plenty of sunshine

9.7h of sunshine daily

Shoulder season - balanced conditions

43% of peak - good value with moderate crowds

Rich cultural heritage

4 UNESCO World Heritage sites nearby

Good For

👨‍👩‍👧‍👦
Families with children
Comfortable 22.5°C temperatures and low 21% rain risk
👴
Elderly travelers
Comfortable 22.5°C temperature range with manageable humidity
🥾
Outdoor enthusiasts
Ideal hiking conditions: 22.5°C, 21% rain chance
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 98/100 with romantic weather conditions

Who Should Avoid

Suitable for most traveler types

Warmest

August

29°C avg

Coolest

January

2°C avg

Driest

January

7% rain

Wettest

July

44% rain

Planning Your Trip to Seoul, South Korea

Wondering when is the best time to visit Seoul? Based on our analysis of 30 years of NASA satellite weather data, the ideal months to travel to Seoul are May, September, October. During these months, you'll experience optimal temperatures around 22°C with only 21% chance of rain.

The Seoul climate varies throughout the year. August is the hottest month with average highs of 29°C, while January is the coldest at 2°C. If you're planning outdoor activities or sightseeing in Seoul, avoid July when rainfall peaks at 44% probability.

For the best Seoul weather experience, we recommend visiting during January for the driest conditions or the shoulder months of May and September for a perfect balance of weather and fewer crowds.

Seoul Weather by Month: Climate Guide

Click any month to explore detailed daily forecasts for Seoul

🏆 85-100: Excellent👍 70-84: Great👌 55-69: Good🤔 40-54: Fair⚠️ 0-39: Challenging

When to Visit Seoul: Travel Style Guide

Personalized Seoul travel recommendations based on 30-year weather data

Beach Lovers

Warmest months with comfortable temperatures for outdoor activities

AugustJuneSeptember

Budget Travelers

Shoulder season with good weather and lower prices

FebruaryMarchApril

Avoiding Crowds

Fewer tourists with acceptable weather conditions

JanuaryFebruaryJuly

Photography

Best light conditions with clear skies

MarchNovemberOctober

Winter Escape

Escape the cold with warmest temperatures

JuneJulyAugust

Honeymoon

Perfect conditions for a romantic getaway

MarchAprilMay

Seoul Weather FAQ: Your Questions Answered

What is the best time to visit Seoul?

Based on 30 years of weather data, the best months to visit Seoul are May, September, October. These months offer the optimal combination of pleasant temperatures (22°C avg) and low rainfall (21% chance).

When is the hottest time of year in Seoul?

August is historically the warmest month in Seoul with average highs of 29°C. If you prefer cooler weather, consider visiting in January when temperatures average around 2°C.

When is the rainy season in Seoul?

July typically sees the most rainfall in Seoul with a 44% chance of rain. For the driest conditions, plan your visit in January when rain probability drops to just 7%.

How accurate is the Seoul weather forecast?

Our Seoul climate analysis is based on 30 years of NASA POWER satellite observations (1995-2024), providing highly accurate historical averages. While weather can vary year to year, these long-term patterns are excellent indicators for planning your trip to Seoul.

What should I pack for Seoul?

Packing depends on when you visit. In August (warmest month), pack light summer clothes for 29°C weather. In January (coolest month), bring layers for 2°C temperatures. During July, pack rain gear as there's a 44% chance of rain.

Is Seoul good for a destination wedding?

Yes! The best months for an outdoor wedding in Seoul are January (only 7% rain chance) and May for optimal weather conditions. Avoid July when rain probability peaks at 44%.