The best time to visit Venice is April to June and September to October, when the weather is mild (16–24 °C), the light is cinematic, and the summer crush is either building or fading.
Spring (April–May): Gardens bloom on the lagoon islands, temperatures are comfortable for walking, and Easter draws some crowds but nothing compared to summer. Late April and May are arguably the finest weeks of the year.
Summer (June–August): Venice is hot (up to 32 °C), extremely crowded, and occasionally plagued by mosquitoes from the lagoon. Prices peak. That said, long evenings, outdoor concerts, and the Venice Biennale (in odd years) have their own appeal. Book everything months ahead.
Autumn (September–October): Often the best-kept secret. Temperatures cool, the aqua alta (high water) season begins in October but rarely causes serious disruption at this stage, and the post-summer exodus leaves the alleys noticeably quieter.
Winter (November–February): Venice in winter is atmospheric, affordable, and genuinely romantic — misty mornings on the canals, fewer visitors, and the magical derangement of Carnevale in February. Aqua alta is more frequent November–January; pack waterproof boots.