Ansan
South Korea
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Ansan, South Korea

In Ansan, South Korea, the average seawater temperature in January is 5°C (41°F). Note: Swimming in 5°C (41°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in January »
February is the month with the coldest seawater in Ansan, South Korea, with an average sea temperature of 3.3°C (37.9°F). Note: For swimming, this is considered extremely cold, dangerous, and life-threatening. Weather in February »

In Ansan, South Korea, in March, the average water temperature is 4.1°C (39.4°F). Note: For swimming, this is considered very dangerous and immediately life-threatening. Weather in March »

In Ansan, South Korea, in April, the average water temperature is 8.4°C (47.1°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. Weather in April »

In Ansan, South Korea, the average seawater temperature in May is 13.3°C (55.9°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. Weather in May »

In Ansan, South Korea, the average seawater temperature in June is 18.7°C (65.7°F). Note: For swimming, a surface water temperature of 18.7°C (65.7°F) is not enjoyable for the majority. Weather in June »

In Ansan, South Korea, the average seawater temperature in July is 22.3°C (72.1°F). Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. Weather in July »

With an average sea temperature of 23.4°C (74.1°F), August is the month with the warmest seawater in Ansan, South Korea. Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23.4°C (74.1°F) water. Weather in August »

In Ansan, South Korea, in September, the average water temperature is 21.9°C (71.4°F). Note: For swimming, a surface water temperature of 21.9°C (71.4°F) is not enjoyable for the majority. Weather in September »

In October, the average sea temperature in Ansan, South Korea, is 18.5°C (65.3°F). Note: Swimming in 18.5°C (65.3°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F). Weather in October »

In November, the average sea temperature in Ansan, South Korea, is 13.8°C (56.8°F). Note: Swimming in 13.8°C (56.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation. Weather in November »

In December, the average sea temperature in Ansan, South Korea, 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. Weather in December »

When is the sea coldest in Ansan?

With an average sea temperature of 3.3°C (37.9°F), February is the month with the coldest seawater.

When are the longest days in Ansan?

With an average of 14.7h of daylight, June has the longest days of the year in Ansan, South Korea.

What month is the sea warmest in Ansan?

August is the month with the warmest seawater in Ansan, South Korea, with an average sea temperature of 23.4°C (74.1°F).

What is the month with the shortest days in Ansan?

December has the shortest days of the year in Ansan, South Korea, with an average of 9.6h of daylight.
Average sea temperature - Ansan, South Korea

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 - Ansan, South Korea

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