The Costa del Sol enjoys a Mediterranean climate characterized by hot summers and mild winters, making it a popular year-round destination. It gets its name, "Coast of the Sun," from the fact that it enjoys more than 320 days of sunshine each year.
Here's a general guide to the weather throughout the year:
Spring (March to May): Temperatures range from around 20°C (68°F) in March to around 25°C (77°F) in May. The weather is generally mild and pleasant, with low chances of rain.
Summer (June to August): Summers are hot, with temperatures ranging from 25°C (77°F) to 30°C (86°F) and sometimes higher. These are the busiest months for tourism, with people flocking to the beaches.
Autumn (September to November): Autumn is still quite warm, with temperatures ranging from 20°C (68°F) to 30°C (86°F) in September, dropping to around 15-20°C (59-68°F) by November. Rainfall increases slightly during this period.
Winter (December to February): Winters are mild by most standards. Daytime temperatures generally range from 15°C (59°F) to 18°C (64°F), though nights can be cooler. These are the wettest months of the year, but even so, rainfall is still relatively low.
Keep in mind that these are average temperatures and actual conditions can vary. It's always a good idea to check the weather forecast closer to your trip. Despite the relatively mild winters, if you're planning to swim in the sea, you'll probably find the water too cold outside of the summer months.
This region is well known for its microclimates, and temperatures can vary quite a bit from the coast to the inland areas, especially in the mountainous regions where it can be considerably cooler.