What's the sea temperature in Morocco for swimming?

People dream of Morocco beaches as tropical bathwater, and the Atlantic gently corrects them. This is a cool ocean. A current runs down the African Atlantic coast that keeps the water bracing, somewhere around 16–18°C in winter and only climbing to about 20–22°C at its late-summer warmest. That is refreshing and perfectly swimmable on a hot day, but it is a sharp first plunge, not a warm soak, and it is why you see more surfers in wetsuits than sunbathers wading in along much of the coast.

Where you go makes a real difference. Agadir, in a south-facing bay with the warmest, calmest Atlantic water and reliable sun, is the most genuinely beach-and-swim friendly spot on the Atlantic side, and the long sandy bay is built for it. Essaouira further north has gorgeous beach but the wind and cooler water make it more a kitesurf and stroll beach than a swimming one. Casablanca and the central coast are pleasant but cool, and most resorts and riads there lean on pools.

The warmer water is up on the Mediterranean side. The far north coast around Tangier, Tetouan, M'diq and the Saidia resort strip faces the Med, which warms up nicely in summer to around 24–25°C, much closer to the gentle swim people imagine. If a warm sea is genuinely high on your list, that northern Mediterranean coast in summer is where I point you, rather than the cooler Atlantic.

My honest take for swimmers: the Atlantic is invigorating and beautiful but rarely warm, so come for the surf, the dramatic coast and the seafood more than for tropical bathing. If you want to actually float and swim in warm water, head to Agadir on the Atlantic or the Mediterranean north in summer, and either way know that many travellers happily split the difference by enjoying the wild ocean by day and a heated riad or resort pool for their proper swim.