Tokyo/Haneda Intl climate by month
Averages and records for each calendar month at Tokyo/Haneda Intl, Japan, from 1949 to 1960. The warmest month is August, averaging 29.9°C; the coolest is January at 9.1°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 9.1°C | 1.0°C | 20.6°C5 January 1960 | −5.0°C28 January 1954 | 12 / 12 |
| February | 9.6°C | 1.8°C | 21.1°C27 February 1954 | −3.3°C11 February 1949 | 12 / 12 |
| March | 12.5°C | 4.6°C | 22.2°C20 March 1954 | −3.3°C1 March 1957 | 12 / 12 |
| April | 17.7°C | 9.9°C | 27.2°C19 April 1954 | 0.6°C1 April 1956 | 12 / 12 |
| May | 22.0°C | 14.4°C | 28.3°C19 May 1950 | 5.0°C3 May 1953 | 12 / 12 |
| June | 24.2°C | 18.0°C | 32.2°C29 June 1955 | 10.0°C9 June 1949 | 11 / 12 |
| July | 28.2°C | 22.3°C | 35.6°C30 July 1955 | 13.9°C4 July 1949 | 12 / 12 |
| August | 29.9°C | 23.7°C | 36.1°C21 August 1953 | 16.7°C27 August 1953 | 12 / 12 |
| September | 26.3°C | 20.2°C | 33.3°C2 September 1959 | 12.2°C28 September 1951 | 11 / 11 |
| October | 20.2°C | 14.2°C | 26.7°C15 October 1951 | 6.7°C31 October 1949 | 11 / 11 |
| November | 15.6°C | 8.7°C | 24.4°C1 November 1953 | −1.1°C29 November 1951 | 11 / 11 |
| December | 11.3°C | 3.4°C | 21.7°C13 December 1957 | −3.9°C23 December 1956 | 11 / 11 |
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 11 to 12 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.