When to visit
The weather in the south is warmer than the north, meaning the only time of the year you really should avoid, are July and August. Seville is the hottest part of Spain, frequently seeing summer temperatures rise to 45 degrees. While the coastal towns of Malaga and Cadiz are cooled by evening sea breezes. October and November are good options and off-season which is a plus if you’re wanting to visit the sights.
Alternatively, March through June are also great months to visit, allowing you to enjoy the buzz of the summer nights while avoiding the summer’s peak. Winter is quiet in comparison but notably warmer than northern Europe.