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Genoa in September: Weather, Average temperature and Climate

Take a look at past year’s weather for Genoa in September and see if it is worth visiting.
Check flight prices to Genoa on Avionero:
September

Weather in Genoa in September 2025

Good Weather
Warm
☀️
Sunny
🌊
Comfortable water
Are you considering a trip to Genoa in September? Well, the weather is usually on your side with an average maximum temperature of +75°F and about 13 sunny days. Just keep in mind that there may be some rain, with an average of 8 rainy days and 110 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+75°F
Avg. max. temperature
+50°F
Min.
+91°F
Max.
110 mm
Total precipitation
69%
Avg. humidity
3 m/s
Avg. wind
13 ☀️
Sunny Days
4 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: Genoa has good weather in September.

Average temperature in Genoa in September

Here are the expected maximum, average and minimum temperatures in Genoa for September based on the historical data.
Last Year
Historical Data

The temperature in September is +81°F on average, with a range between a maximum of +88°F during the day and a minimum of +57°F at night.

The average maximum temperature goes up 6% by the end of the month, compared with the beginning of the month, from +77°F to +79°F.

Is Genoa warm or cold in September?

Genoa is typically warm in September.

Maximum temperatures go down compared to the previous month from +81°F to +75°F. The minimum temperature also goes down from +72°F to +66°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

September is one of the warmest months in Genoa, here is the comparison with other months:

Water temperature in Genoa in September

Water in Genoa in September is Comfortable. It varies from +70°F to +77°F, with an average of +73°F. This is almost similar to the air temperature, which averages +75°F.

The water temperature in September is one of the warmest of the entire year:

The warmest water temperatures in Genoa are reached in August, when the average sea temperature rises to +76°F. The coldest water temperatures are in February, with an average of +55°F.

Can you swim in Genoa in September?

The water in Genoa in September is pretty comfortable (+73°F in average). Ideal for swimming, especially in outdoor pools and open water. Suitable for recreational and casual swimmers.
🦭
Cold
Below +61°F
🏄‍♂️
Fresh
61°F - 70°F
🏊
Comfortable
70°F - 77°F
👙
Warm
77°F - 82°F
🔥
Very warm
+82°C and up
Don’t forget a large beach towel or two for drying off.

Climate in Genoa in September

Genoa weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+81°F+75°F+68°F
Min. temperature
+57°F+50°F+41°F
Max. temperature
+97°F+91°F+81°F
Rainfall
58 mm110 mm179 mm
Wind
2 m/s3 m/s4 m/s
Avg. water temperature
+76°F+73°F+68°F
Humidity
70%69%71%
Air pressure
1014 HPa1015 HPa1016 HPa
Sunny days
151310
Cloudy days
445
Rainy days
7813
Snowy days
000

September weather is still as good as in August. It’s getting colder in September. From +81°F in the day, the average maximum temperature lowers to +75°F. Prepare for more rain. Average rainfall goes from 58 mm to 110 mm. It feels drier, as humidity decreases from 70% to 69%. Winds are stronger in comparison to August, going up from 2 m/s to 3 m/s on average. The days becoming less sunny, going from 15 sunny days in August to 13 in September.

October brings much the same weather, it remains good.

Wind

Wind speed in Genoa in September based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Genoa is gradually decreasing during September, going from 3 m/s to 1 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Genoa based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in September stands at 37%, leading to total precipitation of around 275 mm. The maximum amount of rainfall per day is around 80 mm, which is considered heavy rain. September is a pretty wet month with over 11 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
Genoa wettest month is November, where a typical day has a 43% chance of precipitation and 195 mm of rainfall per day. July, on the other hand, is the driest month with a mere 23% chance of precipitation and 29 mm of rainfall per day.

How was the weather last September in Genoa?

This is the weather in Genoa in September 2023:
1 September
☁️
+77°F
2 September
☀️
+83°F
3 September
☁️
+86°F
4 September
☀️
+86°F
5 September
☀️
+84°F
6 September
☀️
+85°F
7 September
☀️
+88°F
8 September
☀️
+88°F
9 September
☀️
+87°F
10 September
☀️
+85°F
11 September
☀️
+81°F
12 September
☀️
+80°F
13 September
☁️
+78°F
14 September
🌧️
+79°F
15 September
☀️
+81°F
16 September
🌧️
+80°F
17 September
🌧️
+80°F
18 September
☁️
+78°F
19 September
☁️
+79°F
20 September
🌧️
+76°F
21 September
🌧️
+73°F
22 September
🌧️
+75°F
23 September
☀️
+71°F
24 September
☀️
+78°F
25 September
☀️
+78°F
26 September
☀️
+80°F
27 September
☀️
+82°F
28 September
☀️
+83°F
29 September
☀️
+82°F
30 September
☀️
+78°F
In September 2023 Genoa had 19 sunny days, 5 cloudy days, and 6 rainy days. The average maximum temperature was +81°F, with an absolute maximum of +88°F and a minimum of +72°F. The average humidity was 77%, with a maximum of 100% and a minimum of 48%. The average wind speed was 3 m/s, with a maximum of 11 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how Genoa climate has changed over the last 43 years.

The climate in Genoa in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1980 (+62°F) and the highest in 2022 (+69°F). The driest year was 2007 with only 644 mm of rainfall, and the wettest year was 2019 with 3379 mm.

FAQ

Frequently asked questions about the weather in Genoa in September:

Is September a good time to visit Genoa?

September is a really good time to go to Genoa. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Genoa.

Can you sunbathe in Genoa in September?

September is warm in Genoa. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Can you swim in Genoa in September?

Yes, the water temperature in Genoa in September is considered moderate and enjoyable for most people, averaging around +73°F.

Is Genoa rainy in September?

Genoa is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Genoa in September?

The amount of sunny days in Genoa during September varies; prepare for a mix of clouds and sun.

Other cities in Italy

Check out the weather for other cities in Italy.

Monthly weather in Genoa

Source of the data

For this page, we’ve looked at the typical weather in Genoa, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.