French Riviera in May and September: Warm Water Without Crowds

Experience the Cote d’Azur at its golden best: Cannes Film Festival buzz and September swimming.

Written by ETH Editorial Team

Published: Aug 13, 2026 • Fact-checked by ETH Editorial Team

• The Smart Traveler’s Riviera

The Smart Traveler’s Riviera

Locals consider September the undisputed best month on the French Riviera.

Water Temperatures: The Mediterranean retains the summer heat, with water temperatures around 23°C to 24°C, perfect for swimming.
Quiet Beaches: Public beaches in Nice and Villefranche empty out as European schools resume in early September.
May Appeal: Enjoy warm sunshine and the glamour of the Monaco Grand Prix and Cannes Film Festival atmosphere.

About the Author

ETH Editorial Team

The ETH (Euro Travel Hacks) Editorial Team researches European travel costs, transport, accommodation, and trip-planning information using official sources and structured Euro Travel Hacks data. Changing prices and travel information are dated and reviewed against cited sources where practical.

Experience: Structured research and verification across official European transport operators, municipal transit authorities, and national tourism offices.

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