September is an ideal month to travel if you have some flexibility in your schedule. Stay tuned for updatesRelated: The 25 best hotels in LondonMinnesotaLAVIN PHOTOGRAPHY/GETTY IMAGESDo you love food on a stick? It was one of TPG's picks for the best places to go in 2025 for its boom in luxury beach resorts and easy access to Athens, just 10 miles away. Best of all, September is still warm enough to enjoy the beach and swim in the azure sea. TPG tip: Start your trip at the newly reopened (and very spruced up) Conrad Athens The Ilisian, one of our favorite new hotel openings.