Summer gives Vilnius a warm, lively character, filling its plazas, river paths, and historic courtyards with activity. July in Vilnius is the most popular month, offering temperatures of 22°C–26°C (72°F–79°F) and long daylight hours perfect for slow city wandering. Visitors can kayak along the Neris River, explore the Old Town’s architectural mix of Baroque and Gothic styles, or join outdoor concerts throughout the city. Open-air markets, evening festivals, and riverside dining bring a festive rhythm to daily life. Day trips to Trakai Island Castle become especially appealing, offering a blend of nature and history. Summer’s bright, easygoing atmosphere makes Vilnius feel lively yet welcoming.