Seoul
South Korea
Long-term weather forecast
Long-term weather forecast
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April weather forecast and Climate
Seoul, South Korea

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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").
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  • The 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).

  • The 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).

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  • The 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%).

  • The 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).

  • The 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).

  • The average daylight in April: 13h

The month with the longest days is June (Average daylight: 15h).
Months with shortest days are January, November and December (Average daylight: 10h).

  • The 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).

  • The 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).

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