Climate Trends in Korea, South

Climate trends for Korea, South from 0 stations with long records. Also streaks.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Longest Hot, Cold, Wet and Dry Streaks: Korea, South

4 lists of 10

In Korea, South, the longest run of hot days in a row in the data is 14 days, at Pohang (Korea, South), from 6 August 2013 to 19 August 2013.
In Korea, South, the longest run of frost days in a row in the data is 89 days, at Incheon (Korea, South), from 1 December 1952 to 27 February 1953.
In Korea, South, the longest run of ice days in a row in the data is 19 days, at Incheon (Korea, South), from 18 January 1963 to 5 February 1963.
In Korea, South, the longest run of longest run of nights at or above 25 c in the data is 24 days, at Jeju (Korea, South), from 18 July 2025 to 10 August 2025.

Longest run of days at or above 35 C

Consecutive days with a daily maximum at or above 35 C (95 F).

Longest run of days at or above 35 C, Korea, South: the 10 longest runs
Rank	Station	Country	Length	When
1	Pohang	Korea, South	14 days	6 to 19 August 2013
2	Pusan Ast - Rok K-9	Korea, South	11 days	23 July to 2 August 2025
3	Mokpo	Korea, South	10 days	17 to 26 July 1994
4	Gangneung	Korea, South	10 days	7 to 16 August 2013
5	Seoul City	Korea, South	9 days	21 to 29 July 1994
6	Taejon	Korea, South	7 days	31 July to 6 August 2012
7	Chuncheon	Korea, South	6 days	25 to 30 July 2025
8	Incheon	Korea, South	4 days	23 to 26 July 1994
9	Busan	Korea, South	3 days	3 to 5 August 1983
10	Yeosu	Korea, South	2 days	20 to 21 July 1994

Longest run of frost days (minimum at or below 0 C)

Consecutive days with a daily minimum at or below 0 C (32 F).

Longest run of frost days (minimum at or below 0 C), Korea, South: the 10 longest runs
Rank	Station	Country	Length	When
1	Incheon	Korea, South	89 days	1 December 1952 to 27 February 1953
2	Chuncheon	Korea, South	71 days	17 December 2025 to 25 February 2026
3	Ulleungdo	Korea, South	65 days	24 December 1944 to 26 February 1945
4	Mokpo	Korea, South	59 days	31 December 1944 to 27 February 1945
5	Pusan Ast - Rok K-9	Korea, South	29 days	27 January to 24 February 2025
6	Pohang	Korea, South	11 days	3 to 13 February 2025
7	Yeosu	Korea, South	11 days	3 to 13 February 2025
8	Gangneung	Korea, South	8 days	3 to 10 February 2025
9	Busan	Korea, South	8 days	3 to 10 February 2025
10	Jeju	Korea, South	1 day	9 to 9 January 2025

Longest run of ice days (maximum at or below 0 C)

Consecutive days with a daily maximum at or below 0 C (32 F).

Longest run of ice days (maximum at or below 0 C), Korea, South: the 10 longest runs
Rank	Station	Country	Length	When
1	Incheon	Korea, South	19 days	18 January to 5 February 1963
2	Seoul City	Korea, South	17 days	15 to 31 January 2011
3	Ulleungdo	Korea, South	15 days	17 to 31 January 1940
4	Chuncheon	Korea, South	15 days	1 to 15 January 1986
5	Gangneung	Korea, South	11 days	26 December 1976 to 5 January 1977
6	Mokpo	Korea, South	9 days	23 to 31 January 1940
7	Taejon	Korea, South	8 days	10 to 17 January 1981
8	Pohang	Korea, South	5 days	31 December 1976 to 4 January 1977
9	Yeosu	Korea, South	5 days	27 to 31 January 1977
10	Busan	Korea, South	4 days	31 December 1976 to 3 January 1977

Longest run of nights at or above 25 C

Longest run of nights at or above 25 C, Korea, South: the 10 longest runs
Rank	Station	Country	Length	When
1	Jeju	Korea, South	24 days	18 July to 10 August 2025
2	Busan	Korea, South	17 days	13 to 29 August 2025
3	Yeosu	Korea, South	17 days	13 to 29 August 2025
4	Mokpo	Korea, South	16 days	3 to 18 August 1966
5	Incheon	Korea, South	14 days	20 July to 2 August 2025
6	Gangneung	Korea, South	14 days	20 July to 2 August 2025
7	Pohang	Korea, South	14 days	13 to 26 August 2025
8	Ulleungdo	Korea, South	11 days	16 to 26 August 2025
9	Pusan Ast - Rok K-9	Korea, South	6 days	18 to 23 August 1951
10	Chuncheon	Korea, South	2 days	5 to 6 July 2025

A run belongs to the year it started in, even when it ran on into the next year. A station appears once per list, with its longest run in a complete year. Lists use complete years only, so a long run in a year with gaps in the record is not counted.

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Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-12. Trends and counts are computed by this site from daily station records. The long-record station set is described under each chart.