Iwami Arpt climate by month
Averages and records for each calendar month at Iwami Arpt, Japan, from 1955 to 1989. The warmest month is August, averaging 30.3°C; the coolest is January at 8.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 8.6°C | 1.8°C | 18.3°C23 January 1972 | −5.8°C16 January 1963 | 35 / 35 |
| February | 9.2°C | 1.9°C | 22.2°C23 February 1958 | −6.8°C26 February 1981 | 35 / 35 |
| March | 12.4°C | 3.8°C | 25.7°C17 March 1955 | −3.9°C5 March 1977 | 35 / 35 |
| April | 17.5°C | 8.7°C | 29.5°C22 April 1964 | −0.3°C3 April 1957 | 35 / 35 |
| May | 21.6°C | 13.1°C | 30.5°C21 May 1971 | 3.0°C1 May 1965 | 35 / 35 |
| June | 24.6°C | 17.5°C | 33.3°C25 June 1966 | 8.6°C1 June 1978 | 35 / 35 |
| July | 29.2°C | 22.5°C | 36.2°C28 July 1961 | 12.2°C4 July 1966 | 35 / 35 |
| August | 30.3°C | 23.0°C | 37.7°C7 August 1960 | 15.2°C19 August 1956 | 35 / 35 |
| September | 26.2°C | 18.8°C | 35.8°C3 September 1967 | 8.1°C28 September 1987 | 35 / 35 |
| October | 21.4°C | 12.6°C | 29.9°C3 October 1962 | 3.9°C31 October 1986 | 35 / 35 |
| November | 16.5°C | 7.8°C | 26.0°C2 November 1959 | 0.7°C23 November 1966 | 35 / 35 |
| December | 11.6°C | 3.9°C | 21.5°C9 December 1978 | −3.8°C31 December 1960 | 35 / 35 |
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 35 to 35 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.