September weather forecast and climate
Venice, Italy

The Grand water canal of Venice in Italy and a background view of Santa Maria Della Salute Basilica
The Grand water canal of Venice in Italy and a background view of Santa Maria Della Salute Basilica

Weather in September

September, the first month of the autumn, in Venice, is still a warm month, with temperature in the range of an average high of 23.5°C (74.3°F) and an average low of 14.3°C (57.7°F).

Temperature

In September, the average high-temperature slightly decreases, from 27.5°C (81.5°F) in August, to a still warm 23.5°C (74.3°F). In Venice, in September, the average low-temperature is 14.3°C (57.7°F).

Humidity

In Venice, the average relative humidity in September is 75%.

Rainfall

In Venice, during 5.9 rainfall days, 72mm (2.83") of precipitation is typically accumulated. Throughout the year, there are 78.3 rainfall days, and 748.4mm (29.46") of precipitation is accumulated.

Sea temperature

In September, the average sea temperature in Venice is 23.6°C (74.5°F).
Note: Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23.6°C (74.5°F) water may be enjoyable. (FYI: The official water temperature required for the Olympic swimming competition is 25°C (77°F) to 28°C (82.4°F).)

Daylight

In September, the average length of the day is 12.5h.

Sunshine

In Venice, the average sunshine is 6.6h.

UV index

In Venice, Italy, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for the average person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Venice?

The average high-temperature, in September, in Venice, Italy, is 23.5°C (74.3°F), while the average low-temperature is 14.3°C (57.7°F).

What is the average humidity in September in Venice?

In Venice, the average relative humidity in September is 75%.

How many days does it rain in September in Venice?

In Venice, in September, it is raining for 5.9 days, with typically 72mm (2.83") of accumulated precipitation.

How warm is the water in September in Venice?

In Venice, Italy, the average seawater temperature in September is 23.6°C (74.5°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23.6°C (74.5°F) water may be enjoyable.

What is the average length of the day in September in Venice?

The average length of the day in September in Venice is 12.5h.

How many hours of sunshine does Venice have in September?

The average sunshine in September in Venice is 6.6h.

What is the UV index intensity in September in Venice?

In Venice, Italy, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV radiation.

Average temperature in September
Venice, Italy

Average temperature in September - Venice, Italy
  • Average high temperature in September: 23.5°C

The warmest month (with the highest average high temperature) is July (27.7°C).
The month with the lowest average high temperature is January (6.6°C).

  • Average low temperature in September: 14.3°C

The month with the highest average low temperature is July (18.3°C).
The coldest month (with the lowest average low temperature) is January (-0.1°C).

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Average humidity in September
Venice, Italy

Average humidity in September - Venice, Italy
  • Average humidity in September: 75%

Months with the highest relative humidity are January and December (81%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in September
Venice, Italy

Average rainfall in September - Venice, Italy
  • Average rainfall in September: 72mm

The wettest month (with the highest rainfall) is June (78mm).
The driest month (with the least rainfall) is January (47mm).

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Average rainfall days in September
Venice, Italy

Average rainfall days in September - Venice, Italy
  • Average rainfall days in September: 5.9 days

The month with the highest number of rainy days is June (8.6 days).
The month with the least rainy days is February (5.2 days).

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Average sea temperature in September
Venice, Italy

Average sea temperature in September - Venice, Italy
  • Average sea temperature in September: 23.6°C

The best months for swimming (with the highest average sea temperature) are July and August (25.4°C).
The coldest month (with the lowest average sea temperature) is February (8.8°C).

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Average daylight in September /
Average sunshine in September
Venice, Italy

Average daylight in September / Average sunshine in September - Venice, Italy
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.6h).
The month with the shortest days is December (Average daylight: 8.8h).

  • Average sunshine in September: 6.6h

The month with the most sunshine is July (Average sunshine: 9.3h).
The month with the least sunshine is December (Average sunshine: 2.5h).

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Average UV index in September
Venice, Italy

Average UV index in September - Venice, Italy
  • Average UV index in September: 5

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January and December (UV index 1).

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