Jeju
South Korea
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Jeju, South Korea

A high sunrise Panorama of the Jeju Island in Jeju, South Korea
A high sunrise Panorama of the Jeju Island in Jeju, South Korea
August, the last month of the summer, in Jeju, is also a moderately hot month, with average temperature varying between 24.3°C (75.7°F) and 29.8°C (85.6°F).

Temperature

With an average high-temperature of 29.8°C (85.6°F) and an average low-temperature of 24.3°C (75.7°F), August is the warmest month.

Humidity

In August, the average relative humidity is 76.5%.

Rainfall

The month with the most rainfall is August when the rain falls for 13.5 days and typically aggregates up to 262.5mm (10.3") of precipitation.

Sea temperature

With an average sea temperature of 26.2°C (79.2°F), August is the month with the warmest seawater in Jeju. For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

Daylight

In Jeju, South Korea, the average length of the day is 13.4h.

Sunshine

In August, the average sunshine in Jeju is 6.3h.

UV index

In Jeju, the average daily maximum UV index is 10. A UV Index of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV rays for the average person.
The average daily UV index of 10 in August transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the warmest month in Jeju?

The warmest month in Jeju, South Korea, is August, with an average high-temperature of 29.8°C (85.6°F) and an average low-temperature of 24.3°C (75.7°F).

What is the temperature in August in Jeju?

In August, in Jeju, the average high-temperature is 29.8°C (85.6°F), and the average low-temperature is 24.3°C (75.7°F).

What is the average humidity in August in Jeju?

In Jeju, South Korea, the average relative humidity in August is 76.5%.

How much does it rain in Jeju in August?

In August, in Jeju, the rain falls for 13.5 days. Throughout August, 262.5mm (10.3") of precipitation is accumulated.

What is the rainiest month in Jeju?

The month with the most rainfall is August when the rain falls for 13.5 days and typically aggregates up to 262.5mm (10.3") of precipitation.

What month is the sea warmest in Jeju?

With an average sea temperature of 26.2°C (79.2°F), August is the month with the warmest seawater in Jeju. For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the sea water temperature in August in Jeju?

In Jeju, in August, the average water temperature is 26.2°C (79.2°F). Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

How many hours of daylight does Jeju have in August?

In August, the average length of the day in Jeju, South Korea, is 13.4h.

How long on average sun shines in August in Jeju?

The average sunshine in August in Jeju, South Korea, is 6.3h.

What is the UV index reading in August in Jeju?

In Jeju, South Korea, the average daily maximum UV index in August is 10. A UV Index value of 8 to 10 symbolizes a very high hazard to health from the exposure to the Sun's UV radiation.
Average temperature in August - Jeju, South Korea
  • Average high temperature in August: 29.8°C

The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (8.3°C).

  • Average low temperature in August: 24.3°C

The month with the highest average low temperature is August (24.3°C).
The coldest month (with the lowest average low temperature) is January (3.2°C).

Average humidity in August - Jeju, South Korea
  • Average humidity in August: 76.5%

The month with the highest relative humidity is July (78.3%).
Months with the lowest relative humidity are February and March (64.9%).

Average rainfall in August - Jeju, South Korea
  • Average rainfall in August: 262.5mm

The wettest month (with the highest rainfall) is August (262.5mm).
The driest month (with the lowest rainfall) is December (47.7mm).

Average rainfall days in August - Jeju, South Korea
  • Average rainfall days in August: 13.5 days

The month with the highest number of rainy days is August (13.5 days).
The month with the lowest number of rainy days is October (7 days).

Average sea temperature in August - Jeju, South Korea
  • Average sea temperature in August: 26.2°C

The best month for swimming (with the highest average sea temperature) is August (26.2°C).
The coldest month (with the lowest average sea temperature) is March (13.3°C).

Average daylight in August / Average sunshine in August - Jeju, South Korea
  • Average daylight in August: 13.4h

The month with the longest days is June (Average daylight: 14.4h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in August: 6.3h

The month with most sunshine is May (Average sunshine: 6.8h).
The month with least sunshine is January (Average sunshine: 2.3h).

Average UV index in August - Jeju, South Korea
  • Average UV index in August: 10

The month with the highest UV index is July (UV index 11).
Months with the lowest UV index are January and December (UV index 3).