Incheon
South Korea
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Incheon, South Korea

December, the first month of the winter, in Incheon, is also a wintry month, with average temperature ranging between max 4.7°C (40.5°F) and min -2.6°C (27.3°F).

Temperature

In December, the average high-temperature drops, from a fresh 11.8°C (53.2°F) in November, to a cold 4.7°C (40.5°F). In December, in Incheon, South Korea, the average low-temperature is -2.6°C (27.3°F).

Humidity

In December, the average relative humidity is 62%.

Rainfall

The month with the least rainfall is December when the rain falls for 7.3 days and typically collects 19.3mm (0.8") of precipitation.

Sea temperature

In Incheon, in December, the average water temperature is 8.8°C (47.8°F).
Note: Swimming in 8.8°C (47.8°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

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

Sunshine

In Incheon, the average sunshine in December is 5.5h.

What is the temperature in December in Incheon?

In Incheon, South Korea, in December, the average high-temperature is 4.7°C (40.5°F), and the average low-temperature is -2.6°C (27.3°F).

What is the average humidity in December in Incheon?

The average relative humidity in December is 62%.

How much does it rain in Incheon in December?

In Incheon, during December, the rain falls for 7.3 days and regularly aggregates up to 19.3mm (0.8") of precipitation.

What is the driest month in Incheon?

December is the month with the least rainfall in Incheon. Rain falls for 7.3 days and accumulates 19.3mm (0.8") of precipitation.

What is the sea water temperature in December in Incheon?

In Incheon, the average seawater temperature in December is 8.8°C (47.8°F). Swimming in 8.8°C (47.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

What is the month with the shortest days in Incheon?

The month with the shortest days is December, with an average of 9.6h of daylight.

What is the average length of the day in December in Incheon?

The average length of the day in December in Incheon is 9.6h.

How many hours of sunshine does Incheon have in December?

The average sunshine in December in Incheon is 5.5h.
Average temperature in December - Incheon, South Korea
  • Average high temperature in December: 4.7°C

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).

  • Average low temperature in December: -2.6°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).

Average humidity in December - Incheon, South Korea
  • Average humidity in December: 62%

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

Average rainfall in December - Incheon, South Korea
  • Average rainfall in December: 19.3mm

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 in December - Incheon, South Korea
  • Average rainfall days in December: 7.3 days

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 in December - Incheon, South Korea
  • Average sea temperature in December: 8.8°C

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 in December / Average sunshine in December - Incheon, South Korea
  • Average daylight in December: 9.6h

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

  • Average sunshine in December: 5.5h

The month with most sunshine is May (Average sunshine: 7.5h).
The month with least sunshine is July (Average sunshine: 5.1h).