The city of Santander has an oceanic climate (Köppen climate classification Cfb), the annual thermal oscillation of the average monthly temperatures reaching around 10 °C (18 °F).

The maximum temperature reached in Santander Airport was 37.8 °C (100 °F) on 27 June 2009, and the minimum temperature −5.4 °C (22 °F) on 21 January 1957.
The warmest maximum daytime average for a month was in August 2003, with 27.1 °C (80.8 °F).
Warm months (mean above 22 °C (72 °F)) are however rare.

Sunshine hours are very low by comparison with the rest of mainland and southern Spain.
Even compared with other areas of northern Spain, such as Galicia, which have much more sunshine hours in coastal cities such as Vigo or Pontevedra.
With just around 1650 hours of sunshine, Santander is about as sunny as London and Paris, and quite a bit less sunny than most of England's south coastal regions.
The city of Santander has an oceanic climate (Köppen climate classification Cfb), the annual thermal oscillation of the average monthly temperatures reaching around 10 °C (18 °F).
The maximum temperature reached in Santander Airport was 37.8 °C (100 °F) on 27 June 2009, and the minimum temperature −5.4 °C (22 °F) on 21 January 1957. The warmest maximum daytime average for a month was in August 2003, with 27.1 °C (80.8 °F). Warm months (mean above 22 °C (72 °F)) are however rare.
Sunshine hours are very low by comparison with the rest of mainland and southern Spain. Even compared with other areas of northern Spain, such as Galicia, which have much more sunshine hours in coastal cities such as Vigo or Pontevedra. With just around 1650 hours of sunshine, Santander is about as sunny as London and Paris, and quite a bit less sunny than most of England's south coastal regions.
Santander, Spain