April–May (Spring) and September–October (Fall) offer ideal weather, moderate crowds, and affordable prices. Daytime temps hover 18–23°C with occasional rain. Hotels charge €100–150 per night.
June–August (Summer) brings peak tourism, heat (25–30°C), humidity, and inflated prices (€150–250/night). Expect 30,000+ daily visitors; lines at museums exceed 90 minutes. However, all attractions have extended hours, and weather is reliable for island day trips.
November–February (Winter) features fewer tourists, lower prices (€60–100/night), and cool, rainy weather (10–15°C). Acqua Alta (high water flooding) occurs Nov–Mar; water levels rise 0.5–2 meters, submerging piazza walkways. City pumps water away within hours. Waterproof bags and waterproof boots recommended. Venice Carnival (mid-February) brings crowds and festive energy.
March & November transition months with unpredictable weather but moderate crowds and prices. Best value-to-experience ratio.