After a few days of relative relief from the heatwave that hit all of mainland Spain, the mercury will rise again from Thursday onwards as a so-called heat dome forms over much of the peninsula, trapping in Saharan-like air.

A mass of warm air will gradually push up temperatures, bringing intense heat by the weekend, except in the north of the peninsula.

A mass of air "warmer than normal" will spread across the country over the week, sending temperatures soaring into the weekend, with only the north spared.