Seoul weather in May
“Mild and bright — an underrated time to visit.”
Roughly 8 rainy days across the month, on average.
May is one of Seoul's most pleasant months. Daytime temperatures average 22.7°C (73°F), while nights cool to 12.2°C (54°F), creating comfortable conditions for walking and sightseeing. Expect around 106mm of rainfall spread across 8 rainy days, so showers are possible but not constant. You'll enjoy roughly 10 hours of sunshine daily, making it ideal for outdoor exploration.
This is peak spring in Seoul, with cherry blossoms fading and summer flowers beginning to bloom. The city buzzes with energy as locals and tourists fill parks, temples, and street markets. Humidity remains manageable, and crowds are moderate—not as intense as summer but busier than winter. Many festivals and outdoor events happen in May, including traditional performances and night markets.
For 2026, May is an excellent choice if you want warm weather without summer's heat and humidity. Pack layers since mornings and evenings are cool, and bring a light rain jacket. Book accommodation early as spring remains popular, but you'll find better rates than summer peaks.
The city is split by the Han River and the neighborhoods have deep rivalries — Gangnam is nouveau-money, Gangbuk (Jongno, Ikseon-dong) is old-money and old-Seoul. Naver Maps works, Google Maps doesn't (Korean law blocks foreign mapping). Order at pojangmacha street tents late night in Jongno for sundae blood sausage and soju. The escalator etiquette is stand right, walk left, but on Seoul subway it's stand both sides — a Busan person will get annoyed.
What to pack for Seoul in May
May weather in Seoul calls for layering. Mornings and evenings are cool, but afternoons warm up nicely. Rain is occasional but possible, so pack smart. You'll want breathable fabrics that transition easily from cool mornings to warmer afternoons.
- Light rain jacket or windbreaker
- Linen or cotton shirts
- Lightweight cardigan or sweater
- Comfortable walking sneakers
- Casual trousers or jeans
What to pack for Seoul in May
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- →Reef-safe sunscreen SPF 50Amazon · shop this
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Where to stay in Seoul
We don't review individual hotels — plenty of people do that well. What we do is send you to compare rooms in Seoul across trusted platforms.
Compare hotels on Booking.com→Estimated May trip to Seoul
Shoulder-season pricing — a balance of price and conditions. Rule-based estimates from a couple based in London — actual prices vary.
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Delayed flight to Seoul?
May sees 106mm of rain here — delays happen. Check if you're eligible for compensation. EU regulations cover flights departing from or arriving in the EU/UK.
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Things worth doing
Visit Namsan Tower and Seoul parks, explore Bukchon Hanok Village, enjoy street food at Myeongdong, hike Bukhansan National Park.
May vs. the rest of the year
How this month compares in Seoul. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit Seoul
While May has its own character in Seoul, the data-backed best months to visit Seoul are April, October. These months combine the most favourable temperatures, rainfall, and sunshine across an 11-year climate record (2015–2025).
See the full best-time-to-visit guide for SeoulOther places with a similar climate right now
Seoul in May — FAQ
Q01Is May a good time to visit Seoul?
Is May a good time to visit Seoul?
It is a fair time to visit — expect variable conditions and plan flexibility. In May, Seoul averages a high of 23°C (73°F) and a low of 12°C (54°F), with 106mm of rainfall across roughly 8 rainy days. Mid-April cherry blossoms line the Yeouido Yunjungno road and the Han River picnic season officially opens with chimaek (chicken and beer) delivery from tents.
Q02What is the average temperature in Seoul in May?
What is the average temperature in Seoul in May?
The average high temperature in Seoul during May is 23°C (73°F), with an average low of 12°C (54°F). These figures are averaged from 11 complete years of daily records (2015–2025, Open-Meteo Archive).
Q03How many rainy days does Seoul have in May?
How many rainy days does Seoul have in May?
Seoul averages approximately 8 rainy days in May, with a total monthly rainfall of about 106mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days. Late June through July jangma monsoon dumps 400mm; the Han rises past cycling paths and Gangnam intersections flood, stranding buses for hours.
Q04What should I pack for Seoul in May?
What should I pack for Seoul in May?
For Seoul in May, pack layered clothing for changing temperatures, a compact umbrella or waterproof jacket, sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on 11 complete years of weather averages for this specific month. A folding fan (buchae) — locals of all ages carry one in summer and consider hand-fanning strangers a small kindness on packed subways.
Q05How crowded is Seoul in May?
How crowded is Seoul in May?
Tourist crowds in Seoul during May are typically moderate — shoulder season, a sweet spot between crowds and weather. Consider this when planning accommodation — prices track crowd levels closely. The city is split by the Han River and the neighborhoods have deep rivalries — Gangnam is nouveau-money, Gangbuk (Jongno, Ikseon-dong) is old-money and old-Seoul. Naver Maps works, Google Maps doesn't (Korean law blocks foreign mapping). Order at pojangmacha street tents late night in Jongno for sundae blood sausage and soju. The escalator etiquette is stand right, walk left, but on Seoul subway it's stand both sides — a Busan person will get annoyed.