October weather forecast
Jeju, South Korea

October manifests the quintessential autumn in Jeju and comes with a noticeable drop in temperatures, which offer relief after the sweltering summer months. The month brings a refreshing feel, a blend of mild sunny days and nippy evenings. It's a time when the deciduous trees across the island put on an enchanting display of fall colors, presenting an incredible scenery. Rainfall decreases significantly, making way for clear, blue skies that perfectly complement the colorful landscapes. October stimulates a sense of tranquility and peace in Jeju, allowing just the right setup for nature walks and outdoor relaxation.

Temperature

October is characterized by a mild reduction in the average high-temperature, from a moderately hot 25.8°C (78.4°F) in September to a pleasant 21.3°C (70.3°F). October brings with it a nighttime average temperature of 15.1°C (59.2°F).

Humidity

In October, the average relative humidity in Jeju, South Korea, is 66.9%.

Rainfall

In October, in Jeju, the rain falls for 7 days. Throughout October, 80mm (3.15") of precipitation is accumulated. Throughout the year, there are 130.2 rainfall days, and 1498mm (58.98") of precipitation is accumulated.

Sea temperature

In Jeju, in October, the average water temperature is 21.8°C (71.2°F).
Note: When the surface water temperature is 21.8°C (71.2°F), most do not enjoy swimming. Breathing control becomes more complex as temperatures drop below 21°C (69.8°F).

Daylight

In Jeju, the average length of the day in October is 11h and 21min.
On the first day of the month, sunrise is at 06:28 and sunset at 18:18. On the last day of October, in Jeju, sunrise is at 06:51 and sunset at 17:43 KST.

Sunshine

The average sunshine in October is 5.8h.

UV index

The average daily maximum UV index in October is 6. A UV Index of 6 to 7 symbolizes a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: In October, a daily UV index of 6 turns into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.