Seoul in April: Weather Guide
“Mild and bright — an underrated time to visit.”
Roughly 7 rainy days across the month, on average.
Across South Korea's Han River basin, April in Seoul brings a mild bite that eases as the sun climbs, and the streets adjust their rhythm to match. Averages sit around 17.7°C (63.9°F) by day and 6.8°C (44.2°F) after dark, with rainfall near 64 mm across roughly 7 rainy days — settling into steady stretches with clearing between. Daylight runs about 9.3 hours per day, a good working length of light, and the season stamps its signature on details like the riverside cycle paths along the Han.
On the ground, this means layered days. Time around Han River parks rewards a morning window when temperatures stabilise, and by afternoon a mid-weight layer earns its keep as you cross between Gyeongbokgung and the covered options nearby. Evenings pull back indoors — cafés, small restaurants, the warm middle of the day compressed into memory.
Reading across 11 complete years (2015–2025), April in Seoul has trended more variable in recent seasons, with the last few years pushing daytime highs and rainfall patterns modestly away from the older normals. The 2026 signal so far tracks the recent shape rather than the long-run midpoint — meaning what you see above is weighted to how this month has actually been running, not a smoothed 30-year picture that masks the shift.
For travellers planning around 2026, this profile is the honest baseline. Match the packing list to the numbers — not to the month name — and you avoid the classic mismatch of arriving with the wrong shell, the wrong shoes, or the wrong daylight assumptions. The rest of this page breaks down what to wear, what to do, and how the season tends to run for Seoul visitors in 2026.
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 April
With highs around 17.7°C and lows near 6.8°C, layering does the heavy lifting — a single jacket rarely covers a full day.
- a mid-weight jacket
- jeans
- trainers
- a rain shell
- a scarf
What to pack for Seoul in April
- →Breathable travel pantsAmazon · shop this
- →Compact travel umbrellaAmazon · shop this
- →Reef-safe sunscreen SPF 50Amazon · shop this
- →Polarized sunglassesAmazon · shop this
- →Universal travel adapterAmazon · shop this
- →Compression packing cubesAmazon · shop this
We may earn a small commission on any purchase — it doesn't change the price you pay.
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 April trip to Seoul
Shoulder-season pricing — a balance of price and conditions. Rule-based estimates from a couple based in London — actual prices vary.
We may earn a commission if you book through these links, at no cost to you. Estimates use rule-based averages; check partner sites for live pricing.
Plan your Seoul trip
Handpicked services from partners we trust. One tab for everything you'll need after the flight is booked.
Compare rooms in Seoul on Booking.com.
Skip-the-line tickets, day trips, food walks and guided tours.
Compare fares with cashback on every booking.
Instant data on arrival — no roaming charges, no SIM swap.
Flexible monthly coverage for trips of any length.
Compare 900+ rental brands with free cancellation.
Book a driver in advance — fixed price, no queue.
We may earn a commission if you book through these links, at no cost to you.
Things worth doing
Best-fit activities include Namsan hikes, Korean BBQ evenings, palace tours, and street-food crawls — a mix suited to the month's daylight and weather pattern.
April 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
April is one of the best months to visit Seoul — alongside October. 11-year climate data (2015–2025) confirms it: comfortable temperatures, manageable rainfall, and a healthy dose of sunshine.
See the full best-time-to-visit guide for SeoulOther places with a similar climate right now
Seoul in April — FAQ
Q01Is April a good time to visit Seoul?
Is April a good time to visit Seoul?
Yes — it is a good time to visit, with pleasant, comfortable weather. In April, Seoul averages a high of 18°C (64°F) and a low of 7°C (44°F), with 64mm of rainfall across roughly 7 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 April?
What is the average temperature in Seoul in April?
The average high temperature in Seoul during April is 18°C (64°F), with an average low of 7°C (44°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 April?
How many rainy days does Seoul have in April?
Seoul averages approximately 7 rainy days in April, with a total monthly rainfall of about 64mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Seoul in April?
What should I pack for Seoul in April?
For Seoul in April, pack layered clothing for changing temperatures, a merino base layer for evenings, a compact umbrella or waterproof jacket, 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 April?
How crowded is Seoul in April?
Tourist crowds in Seoul during April are typically moderate. 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.