structural:summarization, structural:expansion, stylistic:style_transfer, structural:scholar_edition
Climate

Genoa has a Mediterranean climate (Csa) in the Köppen climate classification, with plentiful precipitation due to its location on a common storm track. Due to its position between the sea and mountains over 1000 meters high, each neighborhood of Genoa has specific climatic characteristics.

The average yearly temperature is around 20 °C (68 °F) during the day and 14 °C (57 °F) at night. In the coldest months, the average temperature is 12 °C (54 °F) during the day and 6 °C (43 °F) at night. In the warmest months – July and August – the average temperature is 28 °C (82 °F) during the day and 22 °C (72 °F) at night. The daily temperature range is limited, with an average range of about 6 °C (11 °F) between high and low temperatures. Genoa also sees significant moderation from the sea, in stark contrast to areas behind the Ligurian mountains such as Parma, where summers are hotter and winters are quite cold.

Annually, the average 2.9 of nights recorded temperatures of ≤ 0 °C (32 °F) (mainly in January). The coldest temperature ever recorded was −8 °C (18 °F) in February 2012; the highest temperature ever recorded during the day is 38.5 °C (101 °F) in August 2015. Average annual number of days with temperatures of ≥ 30 °C (86 °F) is about 8, four days in July and August.

Average annual temperature of the sea is 17.5 °C (64 °F), from 13 °C (55 °F) in the period January–March to 25 °C (77 °F) in August. In the period from June to October, the average sea temperature exceeds 19 °C (66 °F).

Genoa is also a windy city, especially during winter when northern winds often bring cool air from the Po Valley (usually accompanied by lower temperatures, high pressure and clear skies). Another typical wind blows from southeast, mostly as a consequence of Atlantic disturbances and storms, bringing humid and warmer air from the sea. Snowfall is sporadic, but does occur almost every year, albeit big amounts in the city centre are rare. Genoa often receives heavy rainfall in autumn from strong convection. Even so, the overall number of precipitation days is quite modest. There are on average 11.57 days annually with thunder, which is more common from May to October than other times of the year.

Annual average relative humidity is 68%, ranging from 63% in February to 73% in May.

Sunshine hours total above 2,200 per year, from an average 4 hours of sunshine duration per day in winter to average 9 hours in summer.