Tenerife starts to cool as it moves from summer to winter. There's not that many seasons on Tenerife, just hot and hot. Tenerife's mean daily maximum is 27°C and mean daily minimum 19°C.
An estimated 16mm of rain falls over the entire island in 4 days in October, with 20.5 of those days being partially cloudy and an estimated 7.1 days sunny with no clouds in sight. This is second only to December, with 7.5 sunny days and not a cloud in sight.
Tenerife gets 7 hours of sunshine a day in October and the sea, like in September, is 25°C.
This is based on MeteoBlue’s climate data for Tenerife at the time of writing.