The Mediterranean climate of the region means there’s a long season where you can enjoy sunny holidays in Halkidiki. Generally, from around June to September, you’ll enjoy hot days with the temperature peaking in July and August and often hitting 30°C. If you want a good deal, visit Halkidiki in the cooler months of April, May or October, when you’ll have warm weather on most days and quieter resorts, although there can be a little more rain from September onwards.