Wonsan climate by month
Averages and records for each calendar month at Wonsan, North Korea, from 1957 to 2026. The warmest month is August, averaging 27.0°C; the coolest is January at 1.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 1.8°C | −5.1°C | 14.9°C12 January 2002 | −19.0°C5 January 1977 | 57 / 68 |
| February | 3.7°C | −3.1°C | 19.1°C19 February 2004 | −24.0°C15 February 1977 | 45 / 68 |
| March | 8.9°C | 1.3°C | 25.6°C28 March 2014 | −16.3°C5 March 1985 | 57 / 69 |
| April | 16.0°C | 7.4°C | 32.0°C26 April 2015 | −7.0°C4 April 1979 | 49 / 69 |
| May | 21.7°C | 12.9°C | 35.1°C24 May 2013 | 0.0°C4 May 1966 | 58 / 69 |
| June | 23.8°C | 17.2°C | 37.1°C4 June 2001 | 6.0°C1 June 1981 | 58 / 69 |
| July | 26.5°C | 21.5°C | 39.7°C23 July 2018 | 10.0°C3 July 1966 | 56 / 69 |
| August | 27.0°C | 22.4°C | 38.2°C4 August 2018 | 12.0°C16 August 1976 | 55 / 69 |
| September | 23.1°C | 16.6°C | 33.8°C10 September 1998 | 4.8°C7 September 1982 | 51 / 67 |
| October | 18.3°C | 9.7°C | 31.0°C2 October 1978 | −2.0°C29 October 1976 | 56 / 67 |
| November | 11.3°C | 3.5°C | 26.6°C1 November 2023 | −12.2°C30 November 1970 | 49 / 67 |
| December | 4.9°C | −3.4°C | 17.2°C1 December 1968 | −18.0°C14 December 1981 | 47 / 67 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 45 to 58 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.