September weather forecast
Genoa, Italy

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.