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

July 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
July, the same as June, is another warm summer month in Jeju, South Korea, with average temperature varying between 23.3°C (73.9°F) and 29°C (84.2°F).

Temperature

In July, the average high-temperature marginally rises, from a moderately hot 24.8°C (76.6°F) in June, to a still warm 29°C (84.2°F). The average low-temperature, in July, is 23.3°C (73.9°F).

Heat index

The average heat index is estimated at a hot 34.4°C (93.9°F). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'feels like', 'real feel', or 'apparent temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is individual, with diverse people perceiving weather differently for numerous reasons (wind, differences in body mass, height, and shape, pregnancy), and activity. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

July is the most humid month, with an average relative humidity of 78.3%.

Rainfall

In July, the rain falls for 12.5 days. Throughout July, 239.9mm (9.4") of precipitation is accumulated. Throughout the year, there are 130.2 rainfall days, and 1497.7mm (59") of precipitation is accumulated.

Sea temperature

In Jeju, the average seawater temperature is 24.5°C (76.1°F).
Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 24.5°C (76.1°F).

Daylight

The average length of the day in Jeju is 14.1h.

Sunshine

In July, the average sunshine in Jeju, South Korea, is 6.3h.

UV index

The month with the highest UV index is July, with an average maximum UV index of 11. A UV Index estimate of 11, and higher, represents an extreme health hazard from the exposure to the Sun's UV radiation for the ordinary person.
Note: In July, the average maximum UV index of 11 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the temperature in July in Jeju?

In Jeju, in July, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 23.3°C (73.9°F). The average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines air temperature and relative humidity, in July is appraised at 34.4°C (93.9°F).

What is the most humid month in Jeju?

With an average relative humidity of 78.3%, July is the most humid month in Jeju.

What is the average humidity in July in Jeju?

In July, the average relative humidity is 78.3%.

How much does it rain in Jeju in July?

In Jeju, in July, it is raining for 12.5 days, with typically 239.9mm (9.4") of accumulated precipitation.

How warm is the water in July in Jeju?

In Jeju, in July, the average water temperature is 24.5°C (76.1°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 24.5°C (76.1°F) water.

What is the average length of the day in July in Jeju?

In Jeju, South Korea, the average length of the day in July is 14.1h.

How long on average sun shines in July in Jeju?

The average sunshine in July in Jeju is 6.3h.

When is the highest UV index in Jeju?

With an average maximum UV index of 11, July is the month with the highest UV index in Jeju.

How high is the UV index in July in Jeju?

The average daily maximum UV index in July is 11. A UV Index of 11, and more, symbolizes an extreme health vulnerability from the exposure to the Sun's UV rays.
Average temperature in July - Jeju, South Korea
  • Average high temperature in July: 29°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 July: 23.3°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 July - Jeju, South Korea
  • Average humidity in July: 78.3%

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 July - Jeju, South Korea
  • Average rainfall in July: 239.9mm

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 July - Jeju, South Korea
  • Average rainfall days in July: 12.5 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 July - Jeju, South Korea
  • Average sea temperature in July: 24.5°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 July / Average sunshine in July - Jeju, South Korea
  • Average daylight in July: 14.1h

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 July: 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 July - Jeju, South Korea
  • Average UV index in July: 11

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).