Santander/Ballesteros Arpt climate by month
Averages and records for each calendar month at Santander/Ballesteros Arpt, Spain, from 1954 to 2025. The warmest month is August, averaging 23.9°C; the coolest is January at 13.4°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | 13.4°C | 5.9°C | 24.6°C24 January 2016 | −4.6°C16 January 1963 | 63 / 64 |
| February | 13.9°C | 6.0°C | 29.0°C28 February 1960 | −4.6°C5 February 1963 | 63 / 64 |
| March | 15.3°C | 6.9°C | 30.1°C31 March 2021 | −3.0°C9 March 1965 | 62 / 63 |
| April | 16.5°C | 8.4°C | 30.7°C1 April 2011 | 0.8°C22 April 2007 | 62 / 63 |
| May | 18.8°C | 11.0°C | 35.4°C27 May 2005 | 2.6°C25 May 1963 | 62 / 64 |
| June | 21.3°C | 13.8°C | 36.8°C24 June 2025 | 5.6°C11 June 1965 | 63 / 64 |
| July | 23.3°C | 15.9°C | 37.2°C21 July 1989 | 6.0°C3 July 1962 | 61 / 63 |
| August | 23.9°C | 16.2°C | 36.5°C19 August 2020 | 6.0°C21 August 1963 | 61 / 63 |
| September | 22.8°C | 14.4°C | 37.6°C17 September 1987 | 2.8°C29 September 1972 | 62 / 62 |
| October | 20.3°C | 11.9°C | 35.1°C2 October 2023 | 1.4°C21 October 1964 | 61 / 62 |
| November | 16.2°C | 8.6°C | 29.2°C8 November 2015 | −2.3°C22 November 1998 | 61 / 62 |
| December | 14.2°C | 6.8°C | 24.6°C2 December 1985 | −5.2°C25 December 2001 | 61 / 62 |
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 61 to 63 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.