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 (64°F), 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

The onset of April in Seoul, South Korea, marks an increase in the average high-temperature, moving from a cool 10.4°C (50.7°F) in March to a comfortable 17.8°C (64°F). Throughout the month of April, Seoul witnesses an average temperature of 7.8°C (46°F).

Humidity

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

Rainfall

In Seoul, during April, the rain falls for 7.8 days and regularly aggregates up to 65mm (2.56") of precipitation. In Seoul, South Korea, during the entire year, the rain falls for 108.8 days and collects up to 1451mm (57.13") of precipitation.

Daylight

In Seoul, the average length of the day in April is 13h and 10min.
On the first day of the month, sunrise is at 06:17 and sunset at 18:54. On the last day of April, sunrise is at 05:37 and sunset at 19:21 KST.

Sunshine

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

UV index

The average daily maximum UV index in April in Seoul is 7. A UV Index value of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 7 in April translates into the following instructions:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.