Seoul
South Korea
Long-term weather forecast
Long-term weather forecast

April weather forecast and climate
Seoul, South Korea

The colorful lit cityscape of Seoul city, South Korea, with the perfect view of the Dongdaemun Gate
The colorful lit cityscape of Seoul city, South Korea, with the perfect view of the Dongdaemun Gate
April sees the warmth of spring in Seoul as the sun rises firmly over the horizon. The weather is more agreeable as the cold conditions gradually give way to warm ones. The humidity is the lowest of the year at 56%, and it is the end of snowy days and frosty nights.
The average temperatures are in the warm range of 7.8°C (46°F) to 35.6°C (96.1°F), and the daylight increases to 13 hours. The skies are often clear and calm as the days of blossoming flowers bask in beautiful sunshine.
April is one of the best times to visit Seoul with pleasant temperatures and moderate rainfall of 63.5mm (2.5").

What is the temperature in April in Seoul?

In April, in Seoul, the average high-temperature is 17.8°C (64°F), and the average low-temperature is 7.8°C (46°F).

What is the least humid month in Seoul?

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

What is the average humidity in April in Seoul?

In April, the average relative humidity in Seoul is 56.2%.

How much does it rain in Seoul in April?

In April, in Seoul, the rain falls for 7.8 days. Throughout April, 64.5mm (2.5") of precipitation is accumulated.

How many hours of daylight does Seoul have in April?

In Seoul, the average length of the day in April is 13.2h.

How long on average sun shines in April in Seoul?

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

What is the UV index reading in April in Seoul?

In April, the average daily maximum UV index in Seoul, South Korea, is 7. A UV Index reading of 6 to 7 represents a high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in April - Seoul, South Korea
  • Average high temperature in April: 17.8°C

The warmest month (with the highest average high temperature) is August (29.6°C).
The month with the lowest average high temperature is January (1.5°C).

  • Average low temperature in April: 7.8°C

The month with the highest average low temperature is August (22.4°C).
The coldest month (with the lowest average low temperature) is January (-5.9°C).

Average humidity in April - Seoul, South Korea
  • Average humidity in April: 56.2%

The month with the highest relative humidity is July (78.3%).
The month with the lowest relative humidity is April (56.2%).

Average rainfall in April - Seoul, South Korea
  • Average rainfall in April: 64.5mm

The wettest month (with the highest rainfall) is July (394.7mm).
The driest month (with the lowest rainfall) is January (20.8mm).

Average rainfall days in April - Seoul, South Korea
  • Average rainfall days in April: 7.8 days

The month with the highest number of rainy days is July (16.3 days).
The month with the lowest number of rainy days is February (5.8 days).

Average daylight in April / Average sunshine in April - Seoul, South Korea
  • Average daylight in April: 13.2h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).

  • Average sunshine in April: 6.8h

The month with most sunshine is May (Average sunshine: 6.9h).
The month with least sunshine is July (Average sunshine: 3.9h).

Average UV index in April - Seoul, South Korea
  • Average UV index in April: 7

The month with the highest UV index is July (UV index 10).
Months with the lowest UV index are January and December (UV index 2).