The best time to visit Kostrena is during the warmer months, specifically from June to September, when the weather is ideal for enjoying the coast.This period offers long, sunny days and comfortable sea temperatures, great for swimming, sunbathing, and watersports. The average daily temperature during these months ranges from 24°C to 28°C, making it pleasant for outdoor activities.For those who enjoy a lively option and don't mind larger crowds, July and August are peak season. You'll find all restaurants and amenities fully operational, and there are often local events and festivals taking place. Couples looking for a romantic getaway will appreciate the warm evenings for seaside dinners and strolls.If you prefer a more tranquil experience with fewer people but still excellent weather, June and September are superb choices. The sea is still warm enough for swimming, and the temperatures are slightly milder, which is lovely for exploring the coastal paths or enjoying a quiet coffee by the sea.