August is peak summer, and the Atlantic again makes Rabat a relief rather than a trial. Daytime highs around 28°C, cooled by a constant sea breeze, keep the capital comfortable while inland Morocco swelters above 40°C. Mornings can be misty before bright afternoons, the evenings are warm and convivial, and the city's monuments and gardens — the Oudayas, the Hassan Tower, the Chellah — stay enjoyable across the day in the maritime air.
This is when Rabat's coastal location is most valuable. The riverfront, the ramparts and the Atlantic shore catch the cooling wind, and a trip down the coast to Casablanca offers more of the same ocean-tempered warmth. For travellers who find Marrakech or the desert unbearable in high summer, the capital is a strategic, comfortable base from which to enjoy Morocco's culture without the punishing interior heat.
August is busy with European holidaymakers, so the coast and accommodation should be booked ahead and the most popular spots can be lively. But Rabat carries the season far more gracefully than the crowded headline cities. With dry, bright weather, that essential Atlantic breeze and warm summer evenings, August remains a genuinely good month to enjoy the capital on Morocco's temperate coast.