September weather forecast
Genoa, Italy

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Weather in September

September in Genoa marks the transition from summer to autumn. Though temperatures start to dwindle, the city continues to bask in the residual warmth left by summer. The sun gradually reduces its intense glare, with daylight decreasing to 12.5 hours. However, ascending precipitation levels are experienced, culminating in the highest rainfall of the year at 136mm (5.35") on average. Despite being an overall warm period, a steady drop in temperatures towards the latter half heralds the onset of autumn.

Temperature

With the onset of September, the average high-temperature in Genoa subtly recedes from August's 27.7°C (81.9°F) to a still moderately hot 24.4°C (75.9°F). The nighttime temperature in Genoa, during September, averages of 17.9°C (64.2°F).

Rainfall

In Genoa, in September, it is raining for 6 days, with typically 136mm (5.35") of accumulated precipitation. In Genoa, during the entire year, the rain falls for 75.7 days and collects up to 1079mm (42.48") of precipitation.

Sea temperature

In Genoa, the average seawater temperature in September is 23°C (73.4°F).
Note: Given an individual's cold sensitivity, considering factors like sunshine, wind, and air temperature, a brief swim in 23°C (73.4°F) water might be pleasurable. (FYI: The standard water temperature for Olympic swimming contests is 25°C (77°F) to 28°C (82.4°F).)

Daylight

In Genoa, the average length of the day in September is 12h and 31min.
On the first day of September, sunrise is at 06:47 and sunset at 20:00. On the last day of the month, sunrise is at 07:21 and sunset at 19:06 CEST.

Sunshine

In Genoa, Italy, the average sunshine in September is 6.7h.

UV index

In September, the average daily maximum UV index in Genoa is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the UV index of 5 transforms into the following advice:
Heed the precautions - Suggestions to avoid sunburn are made. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Alert! UV radiation becomes sharper due to reflections from sand and water.

Frequently asked questions

What is the usual temperature for Genoa in September?

The high-temperature in Genoa during September is 24.4°C (75.9°F) and the low-temperature is 17.9°C (64.2°F).

How many days does it rain in September in Genoa?

In Genoa, in September, during 6 rainfall days, 136mm (5.35") of precipitation is typically accumulated.

What is the water temperature in September in Genoa?

In September, the average sea temperature in Genoa is 23°C (73.4°F). Depending on a person's sensitivity to cold, with regards to sunshine, wind, and air temperature, a quick swim in 23°C (73.4°F) water may be enjoyable.

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

In Genoa, Italy, the average day length in September is 12h and 31min.

What time are sunrise and sunset in September in Genoa?

In September, on the first day of the month, sunrise is at 06:47 and sunset at 20:00. On the last day of the month, in Genoa, sunrise is at 07:21 and sunset at 19:06 CEST.

How many hours of sunshine does Genoa have in September?

The average sunshine duration in September is 6.7h.

What is the UV index intensity in September in Genoa?

In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average rainfall days
Average daylight
Average sunshine
Average UV index

Average temperature in September
Genoa, Italy

Average temperature in September - Genoa, Italy
  • Average high temperature in September: 24.4°C

The warmest month (with the highest average high temperature) is August (27.7°C).
The month with the lowest average high temperature is January (11.5°C).

  • Average low temperature in September: 17.9°C

The month with the highest average low temperature is August (21°C).
The coldest month (with the lowest average low temperature) is January (5.5°C).

Average rainfall in September
Genoa, Italy

Average rainfall in September - Genoa, Italy
  • Average rainfall in September: 136.4mm

The wettest month (with the highest rainfall) is October (171.3mm).
The driest month (with the least rainfall) is July (24.2mm).

Average rainfall days in September
Genoa, Italy

Average rainfall days in September - Genoa, Italy
  • Average rainfall days in September: 6 days

The month with the highest number of rainy days is April (8.1 days).
The month with the least rainy days is July (2.8 days).

Average sea temperature in September
Genoa, Italy

Average sea temperature in September - Genoa, Italy
  • Average sea temperature in September: 23°C

The best month for swimming (with the highest average sea temperature) is August (24.3°C).
The coldest month (with the lowest average sea temperature) is February (13.2°C).

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

Average daylight in September / Average sunshine in September - Genoa, Italy
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in September: 6h and 4min

The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).

Average UV index in September
Genoa, Italy

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

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

Genoa, Italy

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