May (Festival Season): The Cannes Film Festival transforms the city into celebrity and cinema haven. Croisette buzzes with red carpet energy, world premieres, and international film industry presence. Accommodation scarce and expensive; book months ahead.
April & June-September (Peak Season): Mediterranean warmth without excessive crowds. July-August busiest with beach tourism; May and September offer ideal balance of weather and manageable crowds.
November-March (Off-Season): Fewer tourists, lower prices, mild weather. Rain possible but not frequent. December-January coldest but rarely freezing. Excellent for experiencing authentic local Cannes.
Weather Summary: Mediterranean climate with hot, dry summers (25-28°C) and mild winters (8-13°C). Occasional mistral winds from north. Sea swimming possible April-October.