Climate and monthly weather forecast
Incheon, South Korea

Weather in January

January, the same as December, is a wintry winter month in Incheon, South Korea, with an average temperature varying between 1.7°C (35.1°F) and -5.4°C (22.3°F). The coldest month is January, with an average high-temperature of 1.7°C (35.1°F) and an average low-temperature of -5.4°C (22.3°F). Weather in January »

Weather in February

February, the last month of the winter in Incheon, is another cold month, with temperature in the range of an average high of 4.4°C (39.9°F) and an average low of -3.1°C (26.4°F). In Incheon, the average high-temperature in February is practically the same as in January - a still cold 4.4°C (39.9°F). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Incheon, South Korea, with temperature in the range of an average high of 9.6°C (49.3°F) and an average low of 1.7°C (35.1°F). In Incheon, the average high-temperature in March increases from a cold 4.4°C (39.9°F) in February to a frosty 9.6°C (49.3°F). Weather in March »

Weather in April

April is a comfortable spring month in Incheon, South Korea, with temperature in the range of an average low of 7.6°C (45.7°F) and an average high of 16.1°C (61°F). In Incheon, the average high-temperature in April increases from a chilly 9.6°C (49.3°F) in March to an enjoyable 16.1°C (61°F). Weather in April »

Weather in May

May, the last month of the spring in Incheon, is an agreeable month, with an average temperature varying between 12.8°C (55°F) and 21.3°C (70.3°F). In Incheon, South Korea, the average high-temperature in May rises from an enjoyable 16.1°C (61°F) in April to an agreeable 21.3°C (70.3°F). Weather in May »

Weather in June

June, the first month of the summer in Incheon, is a warm month, with an average temperature varying between 17.6°C (63.7°F) and 25.4°C (77.7°F). In June, the average high-temperature slightly increases from an agreeable 21.3°C (70.3°F) in May to a moderately hot 25.4°C (77.7°F). Weather in June »

Weather in July

July, like June, in Incheon, South Korea, is another warm summer month, with an average temperature fluctuating between 27.6°C (81.7°F) and 21.5°C (70.7°F). In July, the average high-temperature is practically the same as in June - a still warm 27.6°C (81.7°F). Weather in July »

Weather in August

August, the last month of the summer in Incheon, is also a moderately hot month, with an average temperature varying between 29°C (84.2°F) and 22.4°C (72.3°F). August is the warmest month, with an average high-temperature of 29°C (84.2°F) and an average low-temperature of 22.4°C (72.3°F). The average heat index in August is estimated at a sweltering 35°C (95°F). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Incheon, South Korea, with an average temperature varying between 25.5°C (77.9°F) and 17.5°C (63.5°F). In Incheon, the average high-temperature in September slightly decreases from 29°C (84.2°F) in August to a still warm 25.5°C (77.9°F). Weather in September »

Weather in October

October, like September, in Incheon, South Korea, is another comfortable autumn month, with an average temperature varying between 19.7°C (67.5°F) and 11°C (51.8°F). In October, the average high-temperature decreases from a warm 25.5°C (77.9°F) in September to a comfortable 19.7°C (67.5°F). Weather in October »

Weather in November

November, the last month of the autumn in Incheon, is another cool month, with an average temperature fluctuating between 3.9°C (39°F) and 11.8°C (53.2°F). In November, the average high-temperature decreases from an enjoyable 19.7°C (67.5°F) in October to a fresh 11.8°C (53.2°F). Weather in November »

Weather in December

December, the first month of the winter in Incheon, is still a cold month, with an average temperature ranging between max 4.7°C (40.5°F) and min -2.6°C (27.3°F). In December, the average high-temperature decreases from a cool 11.8°C (53.2°F) in November to a cold 4.7°C (40.5°F). Weather in December »
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FAQ

What is the coldest month in Incheon?

The coldest month is January, with an average high-temperature of 1.7°C (35.1°F) and an average low-temperature of -5.4°C (22.3°F).

What is the least humid month in Incheon?

January is the least humid month, with an average relative humidity of 61.5%.

How much does it rain in Incheon?

In Incheon, during the entire year, the rain falls for 101.9 days and collects up to 1235mm (48.62") of precipitation.

What is the month with the coldest sea water in Incheon?

February is the month with the coldest seawater in Incheon, South Korea, with an average sea temperature of 3.3°C (37.9°F).

What month has the most sunshine in Incheon?

The month with the most sunshine is May, with an average of 7.5h of sunshine.

When are the longest days in Incheon?

The month with the longest days is June, with an average of 14h and 42min of daylight.

What is the most humid month in Incheon?

With an average relative humidity of 82.2%, July is the most humid month.

What is the rainiest month in Incheon?

July is the month with the most rainfall in Incheon, South Korea. Rain falls for 14.9 days and accumulates 320mm (12.6") of precipitation.

What is the month with the least sunshine in Incheon?

With an average of 5.1h of sunshine, July has the least sunshine of the year.

What is the warmest month in Incheon?

August is the warmest month, with an average high-temperature of 29°C (84.2°F) and an average low-temperature of 22.4°C (72.3°F).

What month is the sea warmest in Incheon?

August is the month with the warmest seawater, with an average sea temperature of 23.4°C (74.1°F).

What is the driest month in Incheon?

December is the month with the least rainfall. Rain falls for 7.3 days and accumulates 19mm (0.75") of precipitation.

What is the month with the shortest days in Incheon?

With an average of 9h and 38min of daylight, December has the shortest days of the year in Incheon.

Is there Daylight Saving Time (DST) in Incheon?

Incheon does not utilize Daylight Saving Time (DST). KST timezone is used throughout the entire year.

Average temperature
Incheon, South Korea

Average temperature - Incheon, South Korea

The warmest month (with the highest average high temperature) is August (29°C).
The month with the lowest average high temperature is January (1.7°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 (-5.4°C).

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Average humidity
Incheon, South Korea

Average humidity - Incheon, South Korea

The month with the highest relative humidity is July (82.2%).
The month with the lowest relative humidity is January (61.5%).

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Average rainfall
Incheon, South Korea

Average rainfall - Incheon, South Korea

The wettest month (with the highest rainfall) is July (319.6mm).
The driest month (with the least rainfall) is December (19.3mm).

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Average rainfall days
Incheon, South Korea

Average rainfall days - Incheon, South Korea

The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is February (5.3 days).

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Average sea temperature
Incheon, South Korea

Average sea temperature - Incheon, South Korea

The best month for swimming (with the highest average sea temperature) is August (23.4°C).
The coldest month (with the lowest average sea temperature) is February (3.3°C).

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Average daylight / Average sunshine
Incheon, South Korea

Average daylight / Average sunshine - Incheon, South Korea

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 38min).

The month with the most sunshine is May (Average sunshine: 7h and 30min).
The month with the least sunshine is July (Average sunshine: 5h and 6min).

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