Genoa has a humid subtropical climate (Cfa) with Mediterranean influences, moderated by the Ligurian Sea. The city sits in a narrow coastal strip between the sea and the Apennine Mountains, which trap moisture and create Genoa’s characteristically humid conditions. Annual rainfall averages 1,070mm, concentrated in autumn and spring. Sea temperatures stay swimmable from June through September.
Genoa Weather by Month: Temperature and Rainfall
The table below shows average high and low temperatures, rainfall, humidity, sunshine hours, and sea temperatures for each month in Genoa.
| Month | Avg High (°C/°F) | Avg Low (°C/°F) | Rainfall (mm) | Humidity (%) | Sun Hours | Sea Temp (°C/°F) |
|---|---|---|---|---|---|---|
| January | 11 / 52 | 5 / 41 | 106 | 71 | 4 | 14 / 57 |
| February | 12 / 54 | 6 / 43 | 95 | 68 | 5 | 13 / 55 |
| March | 14 / 57 | 8 / 46 | 106 | 68 | 5 | 14 / 57 |
| April | 17 / 63 | 11 / 52 | 95 | 71 | 6 | 15 / 59 |
| May | 21 / 70 | 14 / 57 | 76 | 72 | 7 | 18 / 64 |
| June | 25 / 77 | 18 / 64 | 53 | 72 | 8 | 21 / 70 |
| July | 28 / 82 | 21 / 70 | 26 | 70 | 10 | 24 / 75 |
| August | 28 / 82 | 21 / 70 | 54 | 71 | 9 | 25 / 77 |
| September | 24 / 75 | 18 / 64 | 88 | 71 | 7 | 23 / 73 |
| October | 20 / 68 | 14 / 57 | 157 | 72 | 5 | 20 / 68 |
| November | 15 / 59 | 9 / 48 | 168 | 72 | 4 | 17 / 63 |
| December | 12 / 54 | 6 / 43 | 116 | 71 | 4 | 15 / 59 |
January and February Weather in Genoa
January averages 11°C (52°F) highs and 5°C (41°F) lows with 106mm of rain across 12 wet days. Snow is rare at sea level but the surrounding hills sometimes dust white. February brings slightly warmer 12°C (54°F) highs and lower rainfall at 95mm. Hotel prices drop to their annual low, making this a budget-friendly period for exploring Genoa’s historic center and museums.
March and April Weather in Genoa
March climbs to 14°C (57°F) with 106mm of rain. April warms to 17°C (63°F) with 6 hours of daily sun. Spring in Genoa is unpredictable: you can get a string of 20°C days followed by a week of rain. Pack layers and a waterproof jacket. The best time to visit Genoa guide explains why May and September edge out April.
May and June Weather in Genoa
May delivers Genoa’s first reliably warm, dry weather: 21°C (70°F) highs, 76mm rain, and 7 hours of daily sun. June is the driest month alongside July at 53mm, with 25°C (77°F) highs and comfortable 18°C (64°F) lows. Sea temperature reaches 21°C (70°F) in June, warm enough for swimming at Boccadasse and Nervi beaches.
July and August Weather in Genoa
July is Genoa’s best month: 28°C (82°F) highs, only 26mm rain, and 10 hours of daily sunshine. August matches July’s temperatures but rain doubles to 54mm. Humidity stays at 70-71%, and the city’s narrow medieval streets trap heat. Sea temperatures peak at 25°C (77°F) in August. Book the best places to stay in Genoa well ahead for July and August.
September and October Weather in Genoa
September stays warm at 24°C (75°F) with 88mm rain. October marks the turn toward autumn with 157mm of rain and temperatures dropping to 20°C (68°F). October and November are Genoa’s wettest months; the Apennines funnel Atlantic storms into the Gulf of Genoa. Pack serious rain gear.
November and December Weather in Genoa
November is Genoa’s wettest month at 168mm with temperatures at 15°C (59°F). December brings 12°C (54°F) highs and 116mm rain. The Christmas lights along Via Garibaldi and the Porto Antico ice rink provide winter atmosphere, but expect to spend significant time indoors.
