Hyesan climate by month
Averages and records for each calendar month at Hyesan, North Korea, from 1957 to 2025. The warmest month is July, averaging 27.5°C; the coolest is January at −8.7°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −8.7°C | −23.9°C | 6.1°C12 January 1964 | −37.2°C5 January 1959 | 50 / 67 |
| February | −3.4°C | −19.7°C | 12.1°C24 February 2010 | −33.0°C16 February 1977 | 42 / 67 |
| March | 3.9°C | −9.6°C | 20.6°C28 March 2014 | −27.8°C2 March 1970 | 55 / 68 |
| April | 13.5°C | −1.3°C | 30.0°C20 April 1998 | −20.0°C7 April 1964 | 47 / 68 |
| May | 20.7°C | 4.6°C | 35.0°C30 May 1980 | −4.3°C2 May 2000 | 57 / 68 |
| June | 24.7°C | 11.0°C | 34.0°C24 June 1978 | −1.7°C29 June 1990 | 53 / 68 |
| July | 27.5°C | 15.2°C | 37.1°C24 July 1997 | 6.5°C2 July 1987 | 52 / 68 |
| August | 26.8°C | 13.9°C | 39.7°C5 August 2016 | 1.0°C12 August 1977 | 51 / 68 |
| September | 21.3°C | 7.3°C | 31.6°C3 September 1999 | −4.3°C27 September 1992 | 47 / 65 |
| October | 14.2°C | −2.2°C | 28.5°C1 October 1998 | −19.9°C25 October 1982 | 51 / 66 |
| November | 3.3°C | −9.6°C | 19.0°C4 November 1979 | −26.6°C30 November 1987 | 45 / 66 |
| December | −6.1°C | −20.3°C | 8.2°C14 December 1996 | −35.0°C30 December 1960 | 44 / 66 |
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 42 to 57 years each.
See what Hyesan is doing right now
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.