Seoul in April
In April, Seoul averages 17°C (63°F) during the day and 7°C (45°F) at night, with around 9 days of rain (75 mm total).
ShoulderConditions are cool — bring a jacket for evenings. Occasional showers are likely but won't dominate.
April in Seoul is outside the typical sweet spot for sightseeing weather. It can still be a great time to visit if you have specific reasons (festivals, off-season pricing, etc.).
How April compares to the rest of the year in Seoul
April is in the middle of the year for warmth in Seoul (7th of 12) and moderately rainy compared to the rest of the year (5th of 12). Daytime temperature matches the city's annual average. April runs 7°C warmer than March (10°C) and warms a further 6°C into May (23°C).
April sunrise & sunset in Seoul
Times shown for Seoul local time (Asia/Seoul), calculated for the 15th of April. They shift by a few minutes day to day across the month.
Photography light in Seoul — April
Golden-hour and blue-hour windows for the 15th of April, in Seoul's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Seoul in April
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on April's tier (Shoulder) and Seoul's popularity.
Crowds & pricing — April in Seoul
Seoul is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Why this tier: comfortable tourism weather
Sun & mosquito risk — April in Seoul
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Seoul in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 2°C / 36°F | -6°C / 21°F | 20 mm | 7 | 3 |
| February | 4°C / 39°F | -3°C / 27°F | 25 mm | 7 | 2 |
| March | 10°C / 50°F | 1°C / 34°F | 45 mm | 8 | — |
| April | 17°C / 63°F | 7°C / 45°F | 75 mm | 9 | — |
| May | 23°C / 73°F | 13°C / 55°F | 105 mm | 10 | — |
| June | 27°C / 81°F | 18°C / 64°F | 130 mm | 11 | — |
| July | 29°C / 84°F | 22°C / 72°F | 395 mm | 16 | — |
| August | 30°C / 86°F | 22°C / 72°F | 365 mm | 14 | — |
| September | 26°C / 79°F | 17°C / 63°F | 170 mm | 9 | — |
| October | 19°C / 66°F | 10°C / 50°F | 55 mm | 6 | — |
| November | 11°C / 52°F | 3°C / 37°F | 55 mm | 8 | 1 |
| December | 4°C / 39°F | -3°C / 27°F | 20 mm | 7 | 3 |
Other cities with similar April weather
🌍 See the full ranked list of climate twins for Seoul in April →
Frequently asked questions
How hot is Seoul in April?
In April, Seoul averages a high of 17°C (63°F) and a low of 7°C (45°F) — generally mild and pleasant.
Does it rain a lot in Seoul in April?
April sees occasional rain in Seoul, with about 9 rainy days on average.
Is April a good time to visit Seoul?
April is mild and pleasant. It suits travelers who are comfortable with mild and pleasant weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Seoul in April?
Pack a warm jacket and layers. See the full April packing list for Seoul for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.