April weather forecast and climate
Seoul, South Korea

The Dongdaemun Gate in Seoul city, South Korea
The Dongdaemun Gate in Seoul city, South Korea

Weather in April

April is a comfortable spring month in Seoul, South Korea, with average temperature ranging between max 17.8°C (64°F) and min 7.8°C (46°F).

Temperature

In Seoul, the average high-temperature in April increases, from a cool 10.4°C (50.7°F) in March, to an enjoyable 17.8°C (64°F). The average low-temperature, in April, is 7.8°C (46°F).

Humidity

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

Rainfall

In Seoul, during April, the rain falls for 7.8 days and regularly aggregates up to 64.5mm (2.54") of precipitation. In Seoul, during the entire year, the rain falls for 108.8 days and collects up to 1450.6mm (57.11") of precipitation.

Daylight

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

Sunshine

In Seoul, the average sunshine is 6.8h.

UV index

In April, the average daily maximum UV index is 7. A UV Index reading of 6 to 7 represents a high threat to health from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 7 in April transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the least humid month in Seoul?

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

What is the average humidity in April in Seoul?

The average relative humidity in April in Seoul is 56.2%.

How much does it rain in Seoul in April?

In Seoul, South Korea, in April, during 7.8 rainfall days, 64.5mm (2.54") of precipitation is typically accumulated.

What is the average length of the day in April in Seoul?

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

How many hours of sunshine does Seoul have in April?

In April, the average sunshine is 6.8h.

How high is the UV index in April in Seoul?

The average daily maximum UV index in April in Seoul, South Korea, is 7. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.

Average temperature in April
Seoul, South Korea

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).

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Average humidity in April
Seoul, South Korea

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%).

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Average rainfall in April
Seoul, South Korea

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 least rainfall) is January (20.8mm).

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Average rainfall days in April
Seoul, South Korea

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 least rainy days is February (5.8 days).

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Average daylight in April /
Average sunshine in April
Seoul, South Korea

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 the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in April: 6.8h

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

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Average UV index in April
Seoul, South Korea

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).

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