Rainy Weekend Ahead As Spring Weather Arrives

On Saturday, April 19, 2025, the weather across South Korea is expected to be predominantly cloudy with rain showers anticipated in various regions. According to the Korea Meteorological Administration (KMA), temperatures will feel relatively warm, reminiscent of early summer, as the nation prepares for a mix of weather conditions.

Rain is forecasted to begin in the morning, starting in the northern parts of Gyeonggi Province and the mountainous areas of Gangwon. As the day progresses, the precipitation is expected to expand southward, reaching the central region, Gyeongnam area, and Jeju Island by the afternoon. By evening, rain will spread nationwide, with showers expected to taper off by the morning of April 20, 2025.

The KMA has provided detailed predictions on expected rainfall amounts, which vary by region. In Seoul, Incheon, Gyeonggi, and the West Sea islands, rainfall is projected to be between 5 to 20 millimeters. Meanwhile, the inland and mountainous areas of Gangwon could receive 5 to 20 millimeters, while the eastern coast of Gangwon might see up to 50 millimeters. Other regions like Daejeon, Sejong, South Chungcheong, and North Chungcheong are also expected to receive 5 to 20 millimeters. In the southern regions including Gwangju, Jeolla, and Busan, the forecast suggests 5 to 10 millimeters of rain.

Temperature forecasts for the day indicate a low of 10 to 17 degrees Celsius in the morning, with highs ranging from 16 to 27 degrees Celsius in the afternoon. Major cities will see varying temperatures, with Seoul expected to reach 19 degrees, Incheon 17 degrees, and Daejeon 25 degrees. The significant temperature difference between day and night—expected to be around 10 to 15 degrees Celsius—could pose health risks, particularly for those with weakened immune systems, as colds and throat infections may become more prevalent.

Air quality across the country is expected to be normal, although some areas in the early morning hours may experience poor air quality, particularly in the Seoul metropolitan area and parts of Chungcheong. The KMA advises caution due to the potential for reduced visibility and slippery roads in regions experiencing rain.

In coastal areas, wave heights are predicted to be between 0.5 to 1.5 meters. The inner seas close to the coastline are expected to see slightly higher waves, particularly in the West Sea and South Sea where heights could reach 2.0 meters. Mariners are advised to exercise caution due to the potential for sea fog, especially in island regions where visibility could drop below 200 meters.

As the nation transitions into the agricultural season marked by the 'Gogu' period—known for nourishing crops with spring rain—the KMA has also highlighted the importance of this time for farmers. This period is traditionally seen as critical for agriculture, and the rain is welcomed as it helps ensure a good yield for crops.

Looking ahead to Sunday, April 20, the weather is expected to remain predominantly cloudy, with some areas experiencing rain until the morning. The forecast indicates that temperatures could soar to 27 degrees Celsius in some regions, with significant temperature swings continuing. The KMA warns that the daily temperature range will remain large, particularly in central inland areas, where temperatures may fluctuate by around 15 degrees Celsius.

In the Daejeon, Sejong, and South Chungcheong regions, rain will start in the afternoon and continue until early the next day. The expected rainfall for this area is similar to other regions, with predictions of 5 to 20 millimeters. Temperatures in these areas are also projected to be higher than average, with morning lows around 11 to 16 degrees Celsius and afternoon highs reaching 25 degrees.

As the weekend progresses, the KMA forecasts mostly clear skies for Monday, April 21, 2025, with temperatures expected to range from 8 to 14 degrees in the morning and 18 to 27 degrees in the afternoon. Rain will return on Tuesday, April 22, starting in the early morning hours and affecting most of the country throughout the day.

The KMA continues to monitor weather patterns closely, especially as fog and drizzle may affect visibility and safety on the roads and at sea. Residents are encouraged to stay informed about the weather conditions and to take necessary precautions, especially when traveling during inclement weather.

In summary, South Korea is preparing for a wet and warm weekend, with significant rainfall expected across many regions, highlighting the importance of this season for agriculture. As the country experiences these changing weather patterns, staying informed and cautious will be key to navigating the conditions safely.