Gwangju Weather
Overview
Gwangju Metropolitan City, located in the inland southwestern part of the Korean Peninsula, exhibits a temperate climate with distinct four seasons. It features hot and humid summers and relatively dry winters. Due to recent climate change, the frequency of heatwaves and heavy downpours is increasing, making accurate weather information and preparedness crucial.
Main Content
Climate Characteristics
Gwangju has an annual average temperature of approximately 13–14°C, with summer (June–August) averages of 24–26°C and winter (December–February) averages of 0–3°C. The annual precipitation is about 1,300 mm, slightly higher than the national average, with over 60% of rainfall concentrated in the summer months (June–September). Particularly during the monsoon season (late June to late July), heavy rain falls, and due to typhoons, strong winds and torrential rain may also occur in August and September.
Seasonal Weather Patterns
- Spring (March–May): Influenced by migratory high pressure, there are many clear and dry days, but the diurnal temperature range is large, and yellow dust (hwangsa) may occur. The average temperature is a pleasant 10–18°C.
- Summer (June–August): Under the influence of the hot and humid North Pacific high pressure, it is sweltering and humid, with frequent tropical nights. The number of heatwave days with maximum temperatures exceeding 35°C is on the rise.
- Autumn (September–November): With many clear and cool days, this is the most pleasant season. Late summer heat may persist until early September, but temperatures drop sharply after October.
- Winter (December–February): Affected by the northwest seasonal wind, it is cold and dry, with rain more common than snow. The average temperature is 0–3°C, and during cold spells, it can drop below -10°C.
Major Weather Phenomena
- Heatwaves: In the last decade, Gwangju has been one of the regions with the highest number of heatwave days nationwide. In 2024, a heatwave warning was in effect for over 20 days from late July to mid-August.
- Heavy Downpours: Localized heavy rain in summer frequently causes flood damage, particularly concentrated in Gwangsan-gu and Seo-gu.
- Yellow Dust (Hwangsa): In spring, yellow dust from China causes a sharp increase in fine dust concentrations. In March 2023, the highest level of yellow dust on record was observed.
- Typhoons: Typhoons 'Hinnamnor' in 2022 and 'Khanun' in 2023 passed through Gwangju, causing damage from strong winds and heavy rain.
Weather Information Services
The Gwangju Regional Meteorological Administration is responsible for weather observation and forecasting in the Gwangju and Jeonnam regions. Citizens can obtain real-time information through the Korea Meteorological Administration's Weather Nuri website, smartphone apps, and disaster text messages. Additionally, the city of Gwangju operates heatwave and cold wave shelters, and strengthens monitoring of flood-prone areas during heavy rain.
Latest Trends
Key changes in Gwangju weather from 2024 to 2025 are as follows:
- Climate Change Impact: The average temperature has risen by about 1.5°C compared to 30 years ago, and the number of heatwave days has more than doubled. While the frequency of winter cold spells has decreased, when abnormal cold waves occur, they tend to be more intense.
- Fine Dust Management: In spring 2024, due to yellow dust from China and stagnant domestic air, the concentration of ultrafine dust (PM2.5) recorded 'bad' levels on more than 15 days. The city of Gwangju is strengthening restrictions on old diesel vehicles and air pollution reduction measures.
- Weather Technology Advances: Starting in 2025, the Gwangju Regional Meteorological Administration introduced an AI-based ultra-short-term precipitation prediction system, raising the accuracy of heavy rain forecasts within one hour to over 90%.
- Citizen Response: In summer 2024, the city of Gwangju installed 'cooling fog' systems at major bus stops to prepare for heatwaves and expanded cooling cost support for vulnerable groups.
Related Topics
- [[Climate of Korea]]
- [[Korea Meteorological Administration]]
- [[Heatwave Measures]]
- [[Gwangju Metropolitan City]]
- [[Fine Dust]]
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