Monthly weather forecast and climate
Incheon, South Korea

What is the coldest month in Incheon?

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

How many days does it rain in Incheon?

In Incheon, South Korea, during the entire year, the rain falls for 101.9 days and collects up to 1234.5mm (48.6") of precipitation.

What month is the sea coldest in Incheon?

Month with the coldest seawater is February, with an average sea temperature of 3.3°C (37.9°F). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the wettest month in Incheon?

The month with the most rainfall in Incheon, South Korea, is July when the rain falls for 14.9 days and typically aggregates up to 319.6mm (12.6") of precipitation.

What is the warmest month in Incheon?

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

When is the sea warmest in Incheon?

Month with the warmest seawater is August, with an average sea temperature of 23.4°C (74.1°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23.4°C (74.1°F) water. The Olympic swimming competition requires a water temperature between 25°C (77°F) and 28°C (82.4°F).

What is the driest month in Incheon?

December is the month with the least rainfall. Rain falls for 7.3 days and accumulates 19.3mm (0.8") of precipitation.
Average temperature - Incheon, South Korea
Average humidity - Incheon, South Korea
Average rainfall - Incheon, South Korea

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

Average rainfall days - Incheon, South Korea

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

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).

Average daylight / Average sunshine - Incheon, South Korea
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