Venice's calendar shifts more than most Italian cities.
January
The quietest month, genuinely so. Cold, cheap. Best for: budget travellers, photographers.
February
Quiet at the start, then Carnival — the densest, most expensive time. Verdict: Highly conditional.
March
Spring arriving. Crowds build from mid-month. Verdict: Solid shoulder-season choice.
April
Wisteria blooms. Easter week significantly busier. Verdict: Great, with Easter caveat.
May
Long days, warm but not humid. The Vogalonga late in the month. Verdict: Excellent — the sweet spot.
June
Good to mid-month, busier after. Getting genuinely hot.
July
Peak summer. The Redentore festival (third weekend) is a joyful highlight. Verdict: Busy and hot, but worth it.
August
Very hot. Many Venetians leave; tourists fill the gap.
September
The Regata Storica (first Sunday). Film Festival on the Lido. Verdict: Excellent.
October
Warm sea, soft light, far thinner crowds. Verdict: Outstanding.
November
Acqua alta season in earnest. Genuinely thin crowds. Verdict: Rewarding for the right traveller.
December
Christmas decorations transform San Marco. Big crowd for Capodanno. Verdict: Lovely, book carefully around the peak.