Jeju This Weekend: Heavy Rain and Winds Followed by Warm Weather... Over 150mm Downpour in Mountainous Areas

Gale-force Winds of 20 m/s on April 18 May Disrupt Flights and Ferries

Rain Subsides on April 19, Bringing Back Warm Spring Weather Above Seasonal Norms

Heavy rain exceeding 150mm is expected mainly in the mountainous areas of Jeju until Saturday (18th), but warm weather is forecasted to return from Sunday. On the 15th, the canola flower fields at Seoubong, Hamdeok, Jeju City created a spectacular scene harmonizing with the blue sky and sea. Photo by Park Changwon.

This weekend, Jeju is expected to experience heavy rainfall of over 150mm and strong winds of around 20 meters per second, particularly in mountainous areas affected by topographical features, due to a low-pressure system passing over the southern sea. However, rain is forecast to gradually subside starting Saturday afternoon, and Sunday is expected to bring warmer spring weather with daytime highs reaching 21 degrees Celsius, above the seasonal average.

According to the Korea Meteorological Administration on April 17, Jeju will fall under the direct influence of a low-pressure system moving across the southern sea on Saturday, April 18, leading to very heavy rain through the morning. Forecasted precipitation is more than 150mm in the mountainous and mid-mountain regions of Jeju, while other areas are expected to receive between 30 and 100mm.

There are also concerns about damage from strong winds accompanying the rain. Instantaneous wind speeds are expected to exceed 70 km/h (20 m/s), and winds in mountainous areas could reach over 90 km/h (25 m/s), increasing the likelihood of strong wind advisories being issued. As a result, disruptions are expected for both flights and passenger ferries.

On Sunday, April 19, Jeju will come under the influence of a high-pressure system, resulting in mostly cloudy weather. Morning lows will be around 15 degrees Celsius, and daytime highs will reach 20 to 21 degrees, which is higher than the seasonal average of 17 to 19 degrees, making for relatively warm conditions. However, due to the rain from the previous day, humidity will remain high and dense fog may occur in some areas, so caution is advised for traffic safety and outdoor activities.

Maritime conditions are also expected to be poor. All waters around Jeju and the distant western sea off the southern coast will experience very strong winds, and waves will be very high at 2.0 to 4.0 meters. Vessels engaged in navigation or fishing are advised to check real-time weather information frequently.

An official from the Korea Meteorological Administration stated, "The period until Saturday morning will be the critical point for this weekend's weather conditions," adding, "With heavy rain concentrated over a short period, stream and river water levels can rise rapidly, so please avoid approaching them and thoroughly manage facilities."

This content was produced with the assistance of AI translation services.