Monthly 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 January

January, like December, in Seoul, South Korea, is a wintry winter month, with average temperature varying between -5.9°C (21.4°F) and 1.5°C (34.7°F). The coldest month is January, with an average high-temperature of 1.5°C (34.7°F) and an average low-temperature of -5.9°C (21.4°F). Weather in January »

Weather in February

February, the last month of the winter, in Seoul, is also a wintry month, with temperature in the range of an average high of 4.7°C (40.5°F) and an average low of -3.4°C (25.9°F). In February, the average high-temperature slightly increases, from 1.5°C (34.7°F) in January, to a still wintry 4.7°C (40.5°F). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Seoul, South Korea, with average temperature varying between 10.4°C (50.7°F) and 1.6°C (34.9°F). In March, the average high-temperature increases, from a wintry 4.7°C (40.5°F) in February, to a fresh 10.4°C (50.7°F). Weather in March »

Weather in April

April in Seoul, South Korea, is a comfortable spring month, with average temperature varying between 17.8°C (64°F) and 7.8°C (46°F). In Seoul, the average high-temperature rises, from a cool 10.4°C (50.7°F) in March, to an enjoyable 17.8°C (64°F). Weather in April »

Weather in May

The last month of the spring, May, is a moderately hot month in Seoul, South Korea, with average temperature varying between 23°C (73.4°F) and 13.2°C (55.8°F). In Seoul, South Korea, the average high-temperature increases, from a comfortable 17.8°C (64°F) in April, to a warm 23°C (73.4°F). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Seoul, South Korea, with average temperature ranging between min 18.2°C (64.8°F) and max 27.1°C (80.8°F). In June, the average high-temperature marginally rises, from 23°C (73.4°F) in May, to a still warm 27.1°C (80.8°F). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Seoul, South Korea, with average temperature ranging between max 28.6°C (83.5°F) and min 21.9°C (71.4°F). In July, the average high-temperature is almost the same as in June - a still warm 28.6°C (83.5°F). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Seoul, South Korea, with average temperature ranging between min 22.4°C (72.3°F) and max 29.6°C (85.3°F). With an average high-temperature of 29.6°C (85.3°F) and an average low-temperature of 22.4°C (72.3°F), August is the warmest month. In August, the average heat index is estimated at a sweltering 35.4°C (95.7°F). Weather in August »

Weather in September

September, the first month of the autumn, in Seoul, is still a warm month, with average temperature ranging between max 25.8°C (78.4°F) and min 17.2°C (63°F). In September, the average high-temperature marginally drops, from 29.6°C (85.3°F) in August, to a still moderately hot 25.8°C (78.4°F). Weather in September »

Weather in October

October, like September, in Seoul, South Korea, is another enjoyable autumn month, with average temperature varying between 10.3°C (50.5°F) and 19.8°C (67.6°F). In October, the average high-temperature drops, from a warm 25.8°C (78.4°F) in September, to an enjoyable 19.8°C (67.6°F). Weather in October »

Weather in November

November, the last month of the autumn, in Seoul, is another cool month, with average temperature ranging between min 3.2°C (37.8°F) and max 11.6°C (52.9°F). In November, the average high-temperature significantly decreases, from an enjoyable 19.8°C (67.6°F) in October, to a fresh 11.6°C (52.9°F). Weather in November »

Weather in December

December, the first month of the winter, in Seoul, is also a wintry month, with temperature in the range of an average high of 4.3°C (39.7°F) and an average low of -3.2°C (26.2°F). In December, the average high-temperature drops, from a fresh 11.6°C (52.9°F) in November, to a wintry 4.3°C (39.7°F). Weather in December »
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FAQ

What is the coldest month in Seoul?

With an average high-temperature of 1.5°C (34.7°F) and an average low-temperature of -5.9°C (21.4°F), January is the coldest month.

How many days does it rain in Seoul?

Throughout the year, in Seoul, South Korea, there are 108.8 rainfall days, and 1450.6mm (57.11") of precipitation is accumulated.

What is the driest month in Seoul?

The month with the least rainfall in Seoul is January when the rain falls for 6.5 days and typically collects 20.8mm (0.82") of precipitation.

What is the month with the lowest UV index in Seoul?

Months with the lowest UV index in Seoul are January and December, with an average maximum UV index of 2.

What is the least humid month in Seoul?

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

What month has the most sunshine in Seoul?

With an average of 6.9h of sunshine, May has the most sunshine of the year in Seoul.

When are the longest days in Seoul?

The month with the longest days is June, with an average of 14.7h of daylight.

What is the most humid month in Seoul?

With an average relative humidity of 78.3%, July is the most humid month.

What is the rainiest month in Seoul?

July is the month with the most rainfall. Rain falls for 16.3 days and accumulates 394.7mm (15.54") of precipitation.

What is the month with the least sunshine in Seoul?

The month with the least sunshine in Seoul, South Korea, is July, with an average of 3.9h of sunshine.

What is the month with the highest UV index in Seoul?

With an average maximum UV index of 10, July is the month with the highest UV index.

What is the warmest month in Seoul?

The warmest month is August, with an average high-temperature of 29.6°C (85.3°F) and an average low-temperature of 22.4°C (72.3°F).

What is the month with the shortest days in Seoul?

With an average of 9.6h of daylight, December has the shortest days of the year in Seoul.

Average temperature
Seoul, South Korea

Average temperature - Seoul, South Korea

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 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
Seoul, South Korea

Average humidity - Seoul, South Korea

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
Seoul, South Korea

Average rainfall - Seoul, South Korea

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
Seoul, South Korea

Average rainfall days - Seoul, South Korea

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 / Average sunshine
Seoul, South Korea

Average daylight / Average sunshine - Seoul, South Korea

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

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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