Weather Comparison
Side-by-side weather comparison for April
| Metric | Jeju | Seoul | Better |
|---|---|---|---|
| Average HighHigher is warmer | 16°C (61°F) | 17°C (63°F)▲ | Seoul |
| Average LowHigher is milder | 11°C (52°F)▲ | 6°C (43°F) | Jeju |
| Rain DaysFewer is drier | 9 days | 7 days▲ | Seoul |
| PrecipitationLess is drier | 121 mm | 70 mm▲ | Seoul |
| Sunshine HoursMore is sunnier | 9h/day | 10h/day▲ | Seoul |
| HumidityLower is more comfortable | 70% | 65%▲ | Seoul |
| UV IndexLower is safer | 6 | 6 | Tie |
| Wind SpeedCalmer is better | 18 km/h | 18 km/h | Tie |
Based on sunshine hours, rain days, comfortable temperatures, and humidity levels, Seoul edges ahead as the better destination in April. Seoul offers 10 hours of daily sunshine with only 7 rain days, while Jeju sees 9 sunshine hours and 9 rain days.
Jeju sits in the comfortable travel range at 16°C. Seoul is also comfortable at 17°C.
For travelers who prioritize dry weather, Seoul is the stronger choice in April. Seoul receives 1 more hour of sunshine per day, which matters for sightseeing and outdoor activities.
Jeju reaches an average high of 16°C (61°F) and drops to 11°C (52°F) at night during April. The daily temperature range is 5°C, meaning relatively stable temperatures from day to night.
Seoul averages 17°C (63°F) for the high and 6°C (43°F) for the low, with a daily range of 11°C. The two cities feel quite similar in terms of temperature.
Both cities are in the Northern Hemisphere, so they share the same seasonal pattern in April.
Jeju receives approximately 121 mm of rainfall across 9 rain days during April. You can expect rain roughly every other day.
Seoul sees 70 mm over 7 rain days. That makes Seoul the drier option by 2 rain days and 51 mm of total precipitation.
Humidity also differs: Jeju averages 70% while Seoul sits at 65%. Jeju will feel muggier, especially at higher temperatures.
Highs of 16°C, lows of 11°C, 9 rain days
Highs of 17°C, lows of 6°C, 7 rain days
Pack for both: warm layers, a mid-weight jacket, long trousers, a packable rain jacket, an umbrella. These items are useful in either destination during April.
The table below shows average high temperatures and rain days for every month. April is highlighted for quick reference.
| Month | Jeju | Seoul | ||
|---|---|---|---|---|
| High | Rain | High | Rain | |
| Jan | 7°C | 9d | 1°C | 4d |
| Feb | 8°C | 8d | 4°C | 4d |
| Mar | 11°C | 10d | 10°C | 6d |
| Apr | 16°C | 9d | 17°C | 7d |
| May | 20°C | 10d | 22°C | 8d |
| Jun | 23°C | 13d | 26°C | 9d |
| Jul | 27°C | 16d | 28°C | 17d |
| Aug | 28°C | 17d | 29°C | 16d |
| Sep | 25°C | 13d | 25°C | 8d |
| Oct | 20°C | 7d | 19°C | 5d |
| Nov | 15°C | 8d | 11°C | 7d |
| Dec | 10°C | 8d | 3°C | 5d |
Jeju Weather in April
Full forecast, packing tips, and activities
Seoul Weather in April
Full forecast, packing tips, and activities