The mean daily temperature in Palma de Mallorca, in mid-October is 18C. Typical daily maximums are around 22C, falling to 12C overnight. There's an average of 64mm of rain during the month.
For comparison, the mean daily temperature in London, at that time, is 11C. Typical daily maximums are around 15C, falling to 7C overnight. London has an average of 74mm of rain in October.