Base Esperanza climate by month
Averages and records for each calendar month at Base Esperanza, Antarctica, from 1961 to 2026. The warmest month is January, averaging 3.6°C; the coolest is July at −6.6°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 3.6°C | −1.3°C | 14.8°C1 January 1978 | −8.5°C3 January 2000 | 41 / 63 |
| February | 3.0°C | −2.3°C | 18.4°C7 February 2020 | −13.2°C27 February 2015 | 40 / 63 |
| March | 0.9°C | −5.5°C | 18.0°C13 March 1979 | −20.9°C21 March 1983 | 39 / 63 |
| April | −2.4°C | −9.9°C | 15.9°C2 April 1999 | −26.0°C19 April 1973 | 38 / 63 |
| May | −4.6°C | −12.0°C | 17.2°C27 May 2016 | −29.6°C24 May 1971 | 42 / 63 |
| June | −6.1°C | −14.8°C | 13.3°C12 June 1998 | −30.0°C21 June 1975 | 42 / 63 |
| July | −6.6°C | −14.9°C | 14.0°C15 July 2010 | −38.4°C18 July 1994 | 41 / 63 |
| August | −5.5°C | −14.0°C | 13.0°C5 August 1975 | −31.1°C11 August 1964 | 42 / 63 |
| September | −2.9°C | −11.1°C | 11.4°C16 September 2003 | −32.6°C11 September 1996 | 40 / 63 |
| October | −0.2°C | −7.6°C | 17.0°C10 October 1976 | −23.2°C13 October 2014 | 40 / 61 |
| November | 1.5°C | −4.2°C | 14.3°C26 November 1992 | −17.8°C8 November 1981 | 37 / 60 |
| December | 3.5°C | −1.9°C | 14.6°C1 December 1985 | −9.7°C2 December 1996 | 39 / 60 |
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 37 to 42 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.