September weather forecast
Venice, Italy

The first month of the autumn, September, is still a warm month in Venice, Italy, with an average temperature ranging between min 14.3°C (57.7°F) and max 23.5°C (74.3°F).

Temperature

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

Humidity

In September, the average relative humidity is 75%.

Rainfall

In Venice, during September, the rain falls for 5.9 days and regularly aggregates up to 72mm (2.83") of precipitation. In Venice, during the entire year, the rain falls for 78.3 days and collects up to 748mm (29.45") of precipitation.

Sea temperature

In Venice, the average seawater temperature in September is 23.6°C (74.5°F).
Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 23.6°C (74.5°F).

Daylight

In September, the average length of the day in Venice, Italy, is 12h and 32min.
On the first day of September in Venice, sunrise is at 06:32 and sunset at 19:49. On the last day of the month, sunrise is at 07:07 and sunset at 18:53 CEST.

Sunshine

In Venice, the average sunshine in September is 6.6h.

UV index

In Venice, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.