Malaga city, as well as various points of the Guadalhorce valley and the Costa del Sol, woke up to thick fog for the second successive morning on Wednesday.
The phenomenon, known as 'taró', was reported as far back as Phoenician times and is a type of sea advection fog. It normally occurs at this time of the year when a warmer southeasterly wind sweeps over the surface of the much cooler sea, creating high humidity (recorded at 100 per cent at the airport at one point) and a low fog.
The 'taró' finally cleared at around 11am on Wednesday with the arrival of a strong easterly wind.
The fog was strongest on Tuesday night, going into Wednesday morning, and it caused a total of 17 flights, (one at night, 16 in the morning), to be diverted due to low visibility.
Six were diverted to Seville, seven to Granada and three to Jerez.