Weather in Venice in August

How August compares

August is the 1st warmest month of the year in Venice and ranks 100th of 134 destinations we compare for August - see where else is hot in August. Within Italy it is 14th of 16 (Italy in August). Against London's average high of 21.4°C in August, Venice is 6.0°C warmer by day and 6.7°C warmer at night.

Daytime and night-time in August

The typical August day in Venice peaks at 27.4°C, but that is an average: the warmest 10% of days reach 31.4°C or more. About 80% of days top 25°C and 1 in 5 pass 30°C. Nights average 20.2°C; one night in ten drops to 17.3°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 34.1°C (2018-08-01) and the coldest night 11.6°C (1995-08-29).

Rain in August

Wet (more than 8 rainy days): about 8 days with 1 mm or more, 82 mm in total. Year to year it varies a lot - the wettest August was 2002 with 191 mm, the driest 2011 with 8 mm. Humidity averages 71%.

Sea temperature in August

The sea averages 25.9°C - warm enough to swim (22°c+). Depending on the year it ranges from 24.7°C to 27.0°C. This is the warmest the sea gets here all year.

Sunshine and daylight

Around 8.3 hours of sunshine a day (estimated from cloud cover), 13.9 hours of daylight: the sun rises about 06:12 and sets about 20:19 local time in mid-August. Average cloud cover is 40%.

Is August a good time to visit Venice?

Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Venice on our scoring are July, August, June; months averaging 25°C or more: Jul, Aug.

Expect heat that can feel close

August is Venice's warmest month, and the heat is a regular feature rather than an occasional bonus. Around 80% of days reach 25°C, while 20% reach 30°C. Humidity averages 71%, so walking can feel more tiring than the temperature alone suggests. Plan your more active time for the morning, and leave room for shade or an indoor break around midday. Lightweight, breathable clothes make sense, as does accommodation where you can cool down comfortably. Evenings usually remain warm, so do not rely on sunset to bring much relief. This is a better fit for heat-lovers than travellers who prefer brisk walking weather.

Allow for rain, not just sunshine

The catch is that August is hot but also wet: about 8 days have measurable rain. That does not mean those days are complete washouts, but it does make a completely dry trip something you should not count on. Pack a compact umbrella or a lightweight waterproof that will not feel too heavy in the warmth. Keep outdoor plans movable rather than committing every day to being outside. There is still about 8.3 hours of sunshine a day on average, so the useful approach is to prepare for both strong sun and rain, rather than treating August as reliably dry.

Warm water and plenty of daylight

If swimming is part of your wider trip, the sea is warm enough to make it a comfortable option. It averages around 26°C in August, with a year-to-year range of 25°C to 27°C, so cold water is unlikely to be the main concern. For time in the city, about 13.9 hours of daylight gives you flexibility to pause during the hottest part of the day and head out again later. Bring sun protection and light clothing, alongside your rain cover. August works well if you enjoy warmth and a slower pace; it is less appealing if you want to stay active outdoors throughout the day.