July weather forecast
Jeju, South Korea

With temperatures peaking to 29°C (84.2°F), July is the hottest month in Jeju, marking the zenith of summer. The abundant sunshine illuminates the crystal-clear waters surrounding the island, their warmth inviting for various water activities. However, it is also the rainiest period, with heavy downpours turning the island into a scenic wonder, often followed by picturesque views of rainbows. Despite favorable beach conditions, visitors must keep track of the weather updates due to periodic typhoons hitting the island. Amid this blend of heat, rain, and typhoons, July continues to magnetize thrill-seekers and explorers.

Temperature

Jeju's July weather indicates a minor ascent in high-temperatures, adjusting from 24.8°C (76.6°F) in June to a still moderately hot 29°C (84.2°F). In the month of July, Jeju experiences an average low-temperature of 23.3°C (73.9°F).

Heat index

In July, the heat index is appraised at a tropical 34°C (93.2°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
When assessing, remember that heat index measurements are for light winds and shaded spots. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

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

Rainfall

In Jeju, in July, during 12.5 rainfall days, 240mm (9.45") of precipitation is typically accumulated. In Jeju, during the entire year, the rain falls for 130.2 days and collects up to 1498mm (58.98") of precipitation.

Sea temperature

In July, the average sea temperature is 24.5°C (76.1°F).
Note: People sensitive to cold might find swimming in 24.5°C (76.1°F) challenging. However, conditions like sunshine, wind, and ambient temperature play a significant role in the overall comfort. Wetsuits, while optional, might be beneficial.

Daylight

In July, the average length of the day is 14h and 8min.
On the first day of the month, sunrise is at 05:27 and sunset at 19:47. On the last day of July, sunrise is at 05:45 and sunset at 19:34 KST.

Sunshine

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

UV index

With an average maximum UV index of 11, July is the month with the highest UV index. A UV Index value of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 11 in July interprets into the following advice:
Take every vital safeguard, as unprotected skin and eyes may suffer burns rapidly. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Directly after swimming or an outdoor workout, generously apply and reapply a broad-spectrum SPF 30+ sunscreen. Caution! Sand and water surfaces escalate the UV intensity from the Sun.