Shionomisaki climate by month
Averages and records for each calendar month at Shionomisaki, Japan, from 1953 to 2026. The warmest month is August, averaging 29.6°C; the coolest is January at 11.2°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 11.2°C | 4.6°C | 23.6°C27 January 1969 | −3.1°C22 January 1997 | 67 / 72 |
| February | 11.8°C | 4.6°C | 23.4°C14 February 2009 | −5.0°C26 February 1981 | 59 / 72 |
| March | 14.8°C | 7.4°C | 23.9°C19 March 2013 | −2.2°C5 March 1977 | 65 / 73 |
| April | 19.0°C | 12.3°C | 26.1°C17 April 1956 | 2.5°C2 April 1972 | 67 / 72 |
| May | 22.2°C | 16.1°C | 29.4°C31 May 1958 | 7.3°C2 May 1980 | 66 / 71 |
| June | 24.7°C | 19.6°C | 30.8°C29 June 1971 | 14.2°C15 June 1961 | 66 / 71 |
| July | 28.2°C | 23.4°C | 33.6°C29 July 2004 | 15.3°C3 July 1976 | 65 / 73 |
| August | 29.6°C | 24.4°C | 34.4°C9 August 1956 | 18.3°C20 August 1956 | 66 / 71 |
| September | 27.2°C | 21.7°C | 33.3°C9 September 1991 | 14.2°C30 September 1965 | 63 / 71 |
| October | 22.9°C | 16.7°C | 29.7°C2 October 1998 | 8.7°C31 October 1986 | 65 / 71 |
| November | 18.6°C | 11.9°C | 27.2°C2 November 2000 | 3.2°C26 November 1969 | 63 / 71 |
| December | 13.9°C | 7.1°C | 23.3°C4 December 2018 | −0.3°C27 December 1976 | 65 / 70 |
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 59 to 67 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.