Ansan Weather & Climate: Best Time to Visit

Visitors to Ansan can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a comfortable 29°C (84°F) in August to a chilly 3°C (37°F) in the coolest month, January.

Nights vary from 23°C (73°F) in August to around -4°C (25°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Ansan is known for its substantial rain/snowfall, with annual precipitation reaching 1231 mm (48 in). The climate in Ansan shows significant variation throughout the year. Expect heavy rainfall in July, the wettest month, with an average of 299 mm (12 in) of precipitation over 16 rainy days.

In contrast, the driest month January offers drier and sunnier days, with around 24 mm (0.9 in) 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

The average number of days each month with precipitation

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

Daily hours of sunshine

The relative humidity is high throughout the year in Ansan.

The city experiences its highest humidity in July, reaching 82%. In January, the humidity drops to its lowest level at 60%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year