Genoa Weather in September

September in Genoa averages 23°C (73°F) during the day and 17°C (63°F) at night. Quite a bit of rainfall is typical this month, with around 121 mm (4.8 in) on average. An umbrella is a good idea.

Rainfall in Genoa in September

Typically, you can expect about 10 days of rain this month, with 121 mm (4.8 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Genoa in September

Temperatures in Genoa in September top out at 23°C (73°F) and drop to 17°C (63°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights drop to around 17°C (63°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Genoa in September

Expect a lot of sunshine this month, with about 203 hours of sun. These sunny conditions add to the overall experience.

Wind Speed in Genoa in September

September sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

Average water temperature in September

The water sits at 21°C (70°F), which is a nice temperature for swimming. Not too cold, not too warm — most visitors are happy to spend time in the water.

If your ideal day consists of dry skies and pleasant temperatures, May, June, July and August typically offer the best circumstances for Genoa.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Italy, check out our Genoa's climate page.

Genoa Temperature in September

Min Temperature 17°C (63°F)  

Max Temperature 23°C (73°F)  

Water Temperature 21°C (70°F) *  

Chance of Rain 32%  

Precipitation 121 mm (4.8 in)  

Rainy days 10 days  

Humidity 66% *  

Windspeed 4 m/s (8 knots) *  

Sunshine 203 hours *  

Percentage Sunshine *  

* Data from: Genua, Italy (7 KM, 4 Miles).

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Genoa typically stay consistent throughout September, with daily highs averaging around 23°C (73°F). Nights are pleasant, with lows typically ranging from 16°C (61°F) to 19°C (66°F).

Average temperatures in September

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in September

‹ Select year to compare to 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 ›

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

‹ January February March April May June July August September October November December ›

Historical weather for Genoa in September

Browse day-by-day weather records for Genoa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

‹ 2026 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 ›

‹ January February March April May June July August September October November December ›

Genoa historical weather extremes in September

Based on 49 years of weather observations in Genoa between 1976 and 2025, these are the recorded extremes.

• On September 13, 2020, temperatures climbed to 33°C (91°F), marking the warmest September day on record.
• On September 27, 2007, Genoa saw its coldest September day with temperatures maxing out at 13°C (55°F).
• The coldest night in September in Genoa was on September 14, 1998, with a minimum of 4°C (39°F).

What to Wear in Genoa in September

For Genoa in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 21°C (70°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Genoa in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

9/10

Walking

9/10

Camping

6/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Italy, check out our Genoa's climate page.

More climate data for Genoa

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Genoa climate overview or explore weather in Italy.