April weather forecast
Seoul, South Korea

April witnesses a significant transition towards warm weather, with Seoul's landscapes transforming into vibrant canvases of cherry blossoms. Ideal for outdoor activities, the climate is comfortably warm, experiencing soft, refreshing rain showers. The city experiences a warm daytime high temperature of 17.8°C, inviting for sight-seeing and outdoor festivals. As the month progresses towards May, the temperatures gradually increase, paving the way for the warm summer months.

Temperature

As Seoul transitions into April, the average high-temperature is observed to rise from a fresh 10.4°C in March to a refreshing 17.8°C. The low-temperature average for Seoul during April stands at a frosty 7.8°C.

Humidity

April is the least humid month in Seoul, South Korea, with an average relative humidity of 56.2%.

Rainfall

In Seoul, during April, the rain falls for 7.8 days and regularly aggregates up to 65mm of precipitation. Throughout the year, in Seoul, there are 108.8 rainfall days, and 1451mm of precipitation is accumulated.

Daylight

In April, the average length of the day in Seoul is 13h and 10min.
On the first day of the month, sunrise is at 06:18 and sunset at 18:54. On the last day of April, sunrise is at 05:38 and sunset at 19:20 KST.

Sunshine

In April, the average sunshine in Seoul is 6.8h.

UV index

In Seoul, the average daily maximum UV index in April is 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 7 during April translates into the following recommendations:
Guard oneself from overexposure. Defence against sun injury is vital. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.