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Sunny Friday Forecast Brings Mild Temperatures and Near‑Zero Rain Across South Korea’s Major Cities

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Nationwide Sunny Outlook for Friday Yonhap’s 9:01 a.m. forecast on 20 Feb 2026 lists Seoul, Incheon, Suwon, Cheongju, Daejeon, Chuncheon, Gangneung, Jeonju, Gwangju, Jeju, Daegu and Busan all under “Sunny” conditions, with rain probability at 0 % for eleven cities and a modest 20 % chance only in Chuncheon [1].

Temperature Band Tightens Across Cities Daytime highs range from 10 °C in Incheon to 16 °C in Jeju and Daegu, while nighttime lows fall between –5 °C in Chuncheon and 0 °C in Seoul, indicating a mild winter day for most of the country [1].

Consistent Zero‑Rain Forecast Over Prior Days The Thursday (19 Feb) and Wednesday (18 Feb) reports also showed 0 % rain across all twelve cities, with the only deviations being a 10 % rain chance in Gwangju and Busan on Tuesday (17 Feb) and a cloudy label for Chuncheon on Wednesday [2][3][4].

Regional Variations in Nighttime Lows Inland locations such as Suwon (‑4 °C), Cheongju (‑3 °C) and Daejeon (‑3 °C) are expected to dip below freezing at night, while coastal Jeju remains the warmest with a low of 4 °C, underscoring the north‑south temperature gradient [4][1].

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Timeline

Nov 30, 2025 – The Korea Meteorological Administration forecasts high temperatures of 13‑21 °C and low temperatures of 5‑13 °C across the 12 major cities, with mostly cloudy skies and rain probabilities up to 30 %, indicating a mild, dry Sunday [30].

Dec 1, 2025 – Forecasts show Seoul at 8 °C/3 °C, Incheon 7 °C/3 °C and other cities in the 8‑15 °C range, with 20 % rain chances, suggesting a generally pleasant start to the month [29].

Dec 2, 2025 – Seoul expects a 3 °C high and –1 °C low under cloudy skies with 10 % rain risk, while Jeju sees 12 °C/7 °C and a 30 % rain chance, highlighting regional variation [28].

Dec 3, 2025 – The forecast predicts Seoul cloudy with –3 °C/–8 °C and 10 % rain, Incheon sunny at the same temps with 20 % rain, and Jeju rainy at 9 °C/5 °C and 70 % rain, marking a mixed weather pattern [27].

Dec 4, 2025 – Seoul forecasts 2 °C/–9 °C sunny with a 60 % rain chance, while Jeju expects 11 °C/5 °C rain and 60 % probability, and Chuncheon 2 °C/–14 °C sunny with 60 % rain, underscoring localized precipitation [26].

Dec 11, 2025 – Thursday’s outlook calls for Chuncheon sleet (30 %) and Gangneung sleet (80 %), with Jeju facing a 60 % rain chance and most other cities dry, indicating a weekend of mixed wintry precipitation [25].

Dec 17, 2025 – Thursday’s forecast lists Seoul sunny at 7 °C/–2 °C with 10 % rain, Incheon cloudy at 6 °C/–2 °C (20 % rain), and Jeju cloudy at 13 °C/7 °C (20 % rain), showing a transition to milder early‑winter conditions [24].

Dec 23, 2025 – All 12 cities expect sunny skies with rain probabilities ranging from 60 % to 80 %, and temperatures from –4 °C in Chuncheon to 18 °C in Jeju, illustrating a sunny day with high precipitation risk [23].

Dec 25, 2025 – Thursday’s outlook predicts Seoul and Incheon sunny with near‑freezing lows, while Jeju faces sleet (70 % chance) and a high of 9 °C, highlighting coastal snowfall amid generally clear conditions [22].

Dec 28, 2025 – Sunday’s forecast shows Seoul and central cities mostly sunny with highs 6‑8 °C, but Chuncheon faces a 70 % rain risk and lows around –5 °C, indicating localized heavy rain potential [20].

Dec 30, 2025 – Most cities are sunny with 0 % rain, while Jeju is cloudy with a 0 % rain chance and a high of 10 °C, marking a dry day across the peninsula [19].

Dec 31, 2025 – Wednesday’s outlook lists Jeju cloudy with 30 % rain, Seoul and Incheon sunny with 0 % rain, and Gwangju 20 % rain, reflecting a generally dry but slightly unsettled end of the year [18].

Jan 2, 2026 – The Korea Meteorological Administration issues a nationwide cold‑wave alert as morning temperatures plunge to –10 °C in Seoul and –13.6 °C in Chuncheon, with daytime highs forecast between –5 °C and +4 °C, signaling severe cold risk [17].

Jan 11, 2026 – Sunday’s forecast predicts Seoul sunny at –4 °C/–8 °C with 0 % rain, while Jeju expects sleet at 5 °C/3 °C and a 60 % precipitation chance, showing divergent weather between the capital and the south [14].

Jan 13, 2026 – Tuesday’s outlook shows Seoul sunny at –4 °C, Jeju cloudy at 12 °C/8 °C, and Chuncheon the coldest at –3 °C/–6 °C, with overall low rain probabilities, indicating a bright but chilly day [13].

Jan 20, 2026 – A frigid air mass drives Seoul’s morning low to –11.8 °C and forecasts daytime highs from –4 °C to +7 °C, while heavy snowfall is expected on Jeju, Ulleung and Dokdo on Wednesday‑Thursday, highlighting a severe cold snap [12].

Jan 25, 2026 – Sunday’s forecast lists Seoul cloudy with a high of –3 °C and low of –11 °C, Gwangju sunny with a 10 % rain chance, and Jeju milder at 6 °C/3 °C, indicating generally cold but mostly dry conditions [11].

Jan 26, 2026 – Monday’s outlook shows Seoul cloudy with a 30 % rain chance and a high of 0 °C, while Jeju remains the warmest at 7 °C/1 °C with a 60 % rain probability, reflecting varied precipitation across the country [10].

Feb 1, 2026 – Heavy overnight snowfall blankets South Korea, depositing up to 5‑10 cm on Ulleung and Dokdo and 2‑7 cm elsewhere, prompting Seoul to lift its snow advisory and deploy snow‑removal trucks early morning [9].

Feb 2, 2026 – Monday’s forecast expects cloudy skies with rain in Jeju (60 % chance) and snow in several inland cities, while most other locations remain dry, indicating lingering winter precipitation [8].

Feb 4, 2026 – Wednesday’s outlook predicts Seoul cloudy with a 30 % rain chance and a high of 7 °C, while Busan and Jeju enjoy sunny skies with highs of 12‑13 °C, showing a warming trend in the south [7].

Feb 6, 2026 – The Korea Meteorological Administration warns that a cold wave will deepen over the weekend, with morning temperatures dropping to –15 °C to –5 °C, wind speeds of 55‑70 kph, and wind‑chill reaching –14 °C in Seoul, raising safety concerns [5].

Feb 6, 2026 – The Friday outlook for 12 cities shows mostly sunny conditions, lows down to –9 °C in Seoul and highs up to 8 °C in Busan, and rain probabilities of 20‑30 % in most areas, indicating a cold but clear day [6].

Feb 17, 2026 – Tuesday’s forecast lists sunny skies for all major cities with daytime highs from 6 °C (Seoul) to 13 °C (Busan) and only Gwangju and Busan showing a 10 % rain chance, suggesting a broadly pleasant day [4].

Feb 18, 2026 – Wednesday’s outlook reports Seoul sunny with a high of 6 °C, Chuncheon cloudy with a high of 8 °C, and all cities maintaining a 0 % rain probability, highlighting a clear winter day [3].

Feb 19, 2026 – Thursday’s forecast predicts sunny conditions across all 12 cities with highs ranging from 7 °C (Seoul) to 12 °C (Gangneung, Daegu, Busan) and no rain, simplifying travel plans nationwide [2].

Feb 20, 2026 – Friday’s forecast shows all major cities expecting sunny weather, with daytime highs of 10‑16 °C (Jeju and Daegu at 16 °C) and lows down to –5 °C in Chuncheon, indicating a mild winter day across South Korea [1].

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