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 brings a minor shift in the average high-temperature, adjusting from a warm 25.8°C (78.4°F) in September to a pleasant 21.3°C (70.3°F). October nights are marked by an average temperature drop to a moderate 15.1°C (59.2°F).

Humidity

In October, the average relative humidity is 66.9%.

Rainfall

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

Sea temperature

In Jeju, the average seawater temperature in October is 21.8°C (71.2°F).
Note: In water with a temperature of 21.8°C (71.2°F), most people do not enjoy swimming. As the temperature descends from 21°C (69.8°F) to 15°C (59°F), breathing becomes increasingly difficult to control.

Daylight

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

Sunshine

The average sunshine in October is 5.8h.

UV index

In Jeju, the average daily maximum UV index in October is 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum UV index of 6 in October translates into the following recommendations:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Be attentive! The UV exposure is heightened with reflections from sand and water.