Seoul, South Korea skyline

Seoul Weather in April

What April is usually like in Seoul, South Korea — from 2006–2025 averages.

Expect Seoul to reach about 16.8°C (62.2°F) by day and 5.7°C (42.3°F) at night in April, with 8 rainy days bringing 72 mm and around 9.5 hours of sunshine each day.

Avg high

16.8°C (62.2°F)

Avg low

5.7°C (42.3°F)

Rainfall

72 mm (2.8 in)

Rainy days

8 days

Sunshine

9.5 h / day

Humidity

67%

April vs the rest of the year

April is warmer than 5 of the other 11 months, and the 6th wettest month in Seoul.

MonthAvg highvs AprilRainRainy days
January1.8°C (35.2°F)−15°C (−27°F)15 mm3
February4.8°C (40.6°F)−12°C (−21.6°F)24 mm4
March10.7°C (51.3°F)−6.1°C (−11°F)43 mm7
April16.8°C (62.2°F)—72 mm8
May22.4°C (72.3°F)+5.6°C (+10.1°F)100 mm8
June26.9°C (80.4°F)+10.1°C (+18.2°F)121 mm9
July28.5°C (83.3°F)+11.7°C (+21.1°F)343 mm17
August29.1°C (84.4°F)+12.3°C (+22.1°F)257 mm16
September25.1°C (77.2°F)+8.3°C (+14.9°F)135 mm8
October19°C (66.2°F)+2.2°C (+4°F)65 mm6
November11°C (51.8°F)−5.8°C (−10.4°F)50 mm7
December3.1°C (37.6°F)−13.7°C (−24.7°F)25 mm5

What April feels like in Seoul

In Seoul, April brings mid-spring. Afternoons are cool, pleasant for walking as long as you keep a layer on. Once the sun goes down the air changes: nights are cold. Damp air makes the cold feel rawer than the numbers alone suggest.

Rain in Seoul in April

It is a changeable month: rain comes about one day in 4, with dry spells in between. A rainy day brings about 9 mm (0.4 in) on average — steady rain rather than a passing shower. That is lighter than the city's yearly norm of about 12.8 mm per rainy day.

Daylight and sunshine in April

In mid-April, sunrise is at about 5:59 am and sunset at about 7:06 pm (local time) — 13 h 8 min of daylight. The days are stretching out — 1 h 14 min more daylight than mid-March. About 72% of daylight hours are sunny; in short, there are plenty of bright spells.

How April compares to the rest of the year

In Seoul's temperature order, April sits as the 6th coolest month. Afternoons run 6.1°C (11°F) warmer than in March, with 29 mm more rain. May continues the upward trend. May averages a high of 22.4°C (72.3°F).

Who April suits

  • Sightseeing: a good fit — comfortable enough to explore on foot all day.
  • Parks & outdoor: a good fit — good conditions for sitting outside.

Tips for visiting Seoul in April

Versatile Layers

Mornings and evenings are cooler than midday, so dress in layers.

Rain Protection

Keep a small umbrella in your bag and wear shoes that cope with puddles.

Light Jacket

Cool days — a light jacket or sweater for walking around.

Sunglasses

Bright days make sunglasses worth packing.

Quick questions

How warm is Seoul in April?

Expect around 16.8°C (62.2°F) in the afternoon and 5.7°C (42.3°F) at night, which most visitors would call cool.

Does it rain a lot in Seoul in April?

Quite a lot — 72 mm spread over about 8 days.

What should I wear in Seoul in April?

Based on the averages: versatile layers, rain protection, a light jacket and sunglasses. Bring something extra for the cooler evenings.

Is April or May better for visiting Seoul?

On our 12-month climate ranking, May comes out ahead (#2 of 12 vs #5). May is warmer.

Is April a good time to visit Seoul?

Good

Good — mild but cool days, some rainy days (about 8), plenty of sunshine (9.5 h a day). Within Seoul's own year, April ranks #5 of 12.

April in other South Korea cities

Warmer or drier places in April

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Seoul weather by month.