Peak Season (May-September): The most popular time with warm weather, long daylight hours, and numerous festivals. Average temperatures range from 15-23°C (59-73°F). All attractions open, outdoor cafés buzzing, and river cruises operating. Book accommodations in advance, especially during major events.
Shoulder Season (April, October): Ideal for budget travelers seeking fewer crowds. Weather can be unpredictable (5-15°C / 41-59°F) but the city remains charming. Museums and indoor attractions fully operational. Beautiful autumn colors in October make parks particularly photogenic.
Winter Season (November-March): Cold temperatures (-5 to 5°C / 23-41°F) but magical Christmas markets, festive lights on Laisvės Alėja, and winter light festivals at botanical gardens. Lowest accommodation prices. Perfect for museum hopping and cozy café culture. Snow can add romantic atmosphere.
Recommended Duration: 2-3 days for main attractions, 4-5 days including day trips to Trakai, Vilnius, or Rumšiškės.