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Incheon Climate by Month

The temperature in Incheon can vary greatly throughout the year. The temperatures shift from warm to cold. It also experiences much rain/snowfall throughout the year. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

Depending on the time of the year, temperatures range from comfortable to chilly in Incheon. Average daytime temperatures reach a comfortable 29°C in August. In January, the coolest month of the year, temperatures drop to a chilly 3°C. At night, expect cooler temperatures, averaging -5°C during this month.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Incheon has a relatively rain/snowy climate with high precipitation levels, averaging 1208 mm of rain/snowfall annually. Incheon can be quite wet during July, receiving approximately 302 mm of precipitation over 15 rainy days. In contrast January, experiences much drier conditions, with 22 mm of snow/rainfall, spread across 7 snowy/rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

Incheon experiences moderate variation in sunshine hours across the seasons. With 8.1 hours daily sunshine in May, it dips to 5.4 hours in July, offering a balanced mix of sunny and overcast days.

Monthly hours of sunshine

Daily hours of sunshine

The best time of year to visit Incheon in South Korea

During the months of May, June and October you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is summer in Incheon?
    The hottest season / summer takes place in June, July, August and September.
  • Which months have the greatest rainfall in Incheon?
    Most rainfall (rainy season) is seen in July and August.
  • Which is the warmest month in Incheon?
    August has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Incheon?
    The coldest month is January with an average maximum temperature of 3°C.
  • Which is the wettest month in Incheon?
    July tops the wettest month list with 302 mm of rainfall.
  • Which is the driest month in Incheon?
    January is the driest month with 22 mm of precipitation.
  • Which is the sunniest month in Incheon?
    May is the sunniest month with an average of 242 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Incheon

    Thu   Nov 21
    15°C | 4°C
    W 22 km/h
    0.3 mm
    partly cloudy and small chance of slight rain

    partly cloudy and small chance of slight rain

    Fri   Nov 22
    10°C | 1°C
    NW 14 km/h
    clear and no rain

    clear and no rain

    Sat   Nov 23
    12°C | -1°C
    NE 11 km/h
    clear and no rain

    clear and no rain