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

January weather forecast and climate
Incheon, South Korea

January, like December, in Incheon, South Korea, is a wintry winter month, with temperature in the range of an average high of 1.7°C (35.1°F) and an average low of -5.4°C (22.3°F).

Temperature

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

Humidity

With an average relative humidity of 61.5%, January is the least humid month in Incheon.

Rainfall

In Incheon, in January, during 6.6 rainfall days, 20.6mm (0.8") of precipitation is typically accumulated. In Incheon, during the entire year, the rain falls for 101.9 days and collects up to 1234.5mm (48.6") of precipitation.

Sea temperature

In Incheon, the average water temperature is 5°C (41°F).
Note: At temperatures below 10°C (50°F), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 13°C (55.4°F) is not comfortable.

Daylight

In Incheon, South Korea, the average length of the day in January is 9.9h.

Sunshine

In January, the average sunshine is 5.7h.

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 temperature in January in Incheon?

The average high-temperature, in January, is 1.7°C (35.1°F), while the average low-temperature is -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%.

What is the average humidity in January in Incheon?

In January, the average relative humidity in Incheon, South Korea, is 61.5%.

How much does it rain in Incheon in January?

In January, the rain falls for 6.6 days. Throughout January, 20.6mm (0.8") of precipitation is accumulated.

How cold is the water in January in Incheon?

In Incheon, South Korea, in January, the average water temperature is 5°C (41°F). Swimming in 5°C (41°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.

How many hours of daylight does Incheon have in January?

The average length of the day in January in Incheon is 9.9h.

How long on average sun shines in January in Incheon?

In January, the average sunshine in Incheon is 5.7h.
Average temperature in January - Incheon, South Korea
  • Average high temperature in January: 1.7°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 January: -5.4°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 January - Incheon, South Korea
  • Average humidity in January: 61.5%

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 January - Incheon, South Korea
  • Average rainfall in January: 20.6mm

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 January - Incheon, South Korea
  • Average rainfall days in January: 6.6 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 January - Incheon, South Korea
  • Average sea temperature in January: 5°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 January / Average sunshine in January - Incheon, South Korea
  • Average daylight in January: 9.9h

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 January: 5.7h

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