May is warm, dry and dependable in the capital. Daytime highs reach around 23°C, the Atlantic breeze keeps the heat pleasant rather than heavy, and the skies are reliably bright. It is excellent timing for sightseeing of every kind — the Kasbah des Oudayas, the Hassan Tower, the Chellah and the riverside medina are all at their best in the warm, settled weather, and the evenings are mild enough for long, easy outdoor dinners.
Rabat's big cultural event falls in this window: Mawazine (Rhythms of the World), one of Africa's largest music festivals, typically takes place in late spring — often late May or June, with dates that vary each year — drawing major international acts to stages across the capital. It transforms the city for its run, so check the festival dates for your travel year, book accommodation early, and expect a livelier, busier Rabat than usual.
Beyond the festival, May is a strong month for combining the capital with the coast and the imperial inland. The Atlantic shore is fresh and bright, Casablanca is a quick train ride, and Meknes and Volubilis are comfortable in the warm, dry weather. With reliable sunshine, mild evenings and the whole region accessible, May closes the spring window on a high note before the warmer summer arrives.