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Ansan Weather and Climate: A Comprehensive Guide

The temperature in Ansan can vary quite a bit throughout the year. Temperatures can be warm during the warmest months, and cold during the cooler months. It is also known for its large amounts of rain/snowfall. Let's now guide you through the climate details for a complete overview.

Average maximum day and minimum night temperature

Visitors to Ansan can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a comfortable 29°C in August to a chilly 3°C in the coolest month, January.

Nights are cooler, with lows often dropping to around -4°C during the colder months. Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Ansan is known for its substantial rain/snowfall, with annual precipitation reaching 1231 mm. The climate in Ansan shows significant variation throughout the year. Expect heavy rainfall in July, with an average of 299 mm of precipitation over 16 rainy days.

In contrast, January offers drier and sunnier days, with around 24 mm of snow/rainfall over 8 snowy/rainy days. For more details, please visit our Ansan Precipitation page.

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

Sunshine over the year

Ansan offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between May (8.1 hours daily) and July (5.4 hours daily) provides a bit of variety for visitors and residents. Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Incheon, South Korea (18 KM, 11 Miles).

Daily hours of sunshine

Data from: Incheon, South Korea (18 KM, 11 Miles).

Forecast for Ansan

Wed   Jan 15
-1°C | -6°C
NW 4 m/s
clear and no rain

clear and no rain

Thu   Jan 16
5°C | -7°C
W 4 m/s
broken clouds and no rain

broken clouds and no rain

Fri   Jan 17
4°C | -6°C
W 2 m/s
clear and no rain

clear and no rain

Select a Month of Interest

Check the conditions for any month of the year.

The best time of year to visit Ansan in South Korea

During the months of May, June, September 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 Ansan?
    The hottest season / summer takes place in June, July, August and September.
  • Which months have the greatest rainfall in Ansan?
    Most rainfall (rainy season) is seen in July and August.
  • Which is the warmest month in Ansan?
    August has an average maximum temperature of 29°C and is the warmest month of the year.
  • Which is the coldest month in Ansan?
    The coldest month is January with an average maximum temperature of 3°C.
  • Which is the wettest month in Ansan?
    July tops the wettest month list with 299 mm of rainfall.
  • Which is the driest month in Ansan?
    January is the driest month with 24 mm of precipitation.
  • Which is the sunniest month in Ansan?
    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.