When Is Summer in Korea? Months and Weather Guide

In Korea, summer generally lasts from June to August. Summer weather is characterized by high humidity, strong sunlight, and a rainy season known as the monsoon.

1. Summer Months in Korea

• Early summer: June (6월)
• Peak summer: July (7월)
• Late summer: August (8월)

Most Koreans consider June through August to be summer, although the hottest and most humid period is usually from mid-July to mid-August.

2. June (6월) – Beginning of Summer

June marks the start of summer, with rising temperatures and increasing humidity. The rainy season (장마, jang-ma) often begins in mid to late June.

• Temperature: warm during the day, mild at night
• Weather: humid, occasional rain
• Clothing: light long sleeves, T-shirts, thin outerwear for rain

3. July (7월) – Hot and Rainy

July is one of the most challenging months weather-wise due to heavy rain and high humidity. Rain can last for several days in a row during the monsoon period.

• Temperature: hot and humid
• Weather: frequent rain, cloudy days
• Clothing: breathable fabrics, rain jacket, sandals or waterproof shoes

4. August (8월) – Hottest Month

August is typically the hottest month in Korea. After the rainy season ends, strong sunlight and heat dominate most days.

• Temperature: very hot, especially in cities
• Weather: sunny, occasional heatwaves
• Clothing: light clothing, hats, sunglasses, sunscreen

5. Regional Differences

Summer heat is felt across the country, but there are small regional differences:

• Southern regions (Busan, Jeju): More humid, coastal breezes help slightly.
• Central regions (Seoul, Incheon): Hot and humid, heat is trapped between buildings.
• Mountain areas: Cooler temperatures, popular summer retreat areas.

6. What to Pack for Summer in Korea

• Light, breathable clothing
• Compact umbrella or raincoat
• Sunscreen and sunglasses
• Comfortable shoes that can handle rain

Summary

In summary, summer in Korea lasts from June to August. June marks the beginning with increasing humidity, July brings the rainy monsoon season, and August is the hottest and sunniest month. Travelers should be prepared for heat and rain, especially during July and August.