Venice
Italy
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Venice, Italy

A background view of Santa Maria Della Salute Basilica from the Grand water canal of Venice in Italy
A background view of Santa Maria Della Salute Basilica from the Grand water canal of Venice in Italy
September transitions to the lovely fall weather with temperatures in a comfortable range of 13.9°C (57°F) to 22.8°C (73°F). September is one of the best months to visit Venice and one of the busiest. Venice is prone to seasonal floods, and early autumn is one of the high water periods when the gravitational force of the moon, along with the effect of the winds, creates high tides.
September also sees many regatta races that are a joy to take part in or watch from a peaceful setting.
  • 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).

  • 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%).

  • Average rainfall in September: 72mm

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

  • 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 lowest number of rainy days is February (5.2 days).

  • Average sea temperature in September: 23.6°C

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).

  • Average daylight in September: 12.5h

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

  • Average sunshine in September: 6.6h

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

  • 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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