Your trips
Organize your trips easily with tabs
New York
Bologna
Any date
+ Search
background

Bologna in September: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Bologna in September will be like? Take a look at our weather guide for Bologna, based on historical data.
Check flight prices to Bologna on Avionero:
September

Weather in Bologna in September 2025

Good Weather
Warm
☀️
Sunny
Planning a trip to Bologna in September? You are in luck! The weather is generally good, with an average maximum temperature of +79°F and approximately 12 sunny days. Just be prepared for some rain, as there are usually around 11 rainy days and 194 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.

Average weather

☀️
+79°F
Avg. max. temperature
+45°F
Min.
+93°F
Max.
194 mm
Total precipitation
69%
Avg. humidity
1 m/s
Avg. wind
12 ☀️
Sunny Days
4 ⛅️
Cloudy
11 🌦
Rainy
Our opinion: Bologna has good weather in September.

Average temperature in Bologna in September

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

Going from a maximum of +90°F during the day to a minimum of +55°F during the night, the temperature in September averages around +82°F.

The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +82°F to +82°F.

Is Bologna warm or cold in September?

Bologna is typically warm in September.

Maximum temperatures go down compared to the previous month from +86°F to +79°F. The minimum temperature also goes down from +68°F to +61°F.

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

Take a look at how September is compared to other months in Bologna:

Climate in Bologna in September

Bologna weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+86°F+79°F+68°F
Min. temperature
+52°F+45°F+36°F
Max. temperature
+104°F+93°F+90°F
Rainfall
65 mm194 mm182 mm
Wind
1 m/s1 m/s1 m/s
Humidity
62%69%78%
Air pressure
1013 HPa1015 HPa1016 HPa
Sunny days
15129
Cloudy days
249
Rainy days
101112
Snowy days
000

September weather is still as good as in August. It’s getting colder in September. From +86°F in the day, the average maximum temperature lowers to +79°F. Prepare for more rain. Average rainfall goes from 65 mm to 194 mm. Humidity rises from 62% to 69%. The average wind speed doesn’t change much during September, staying around 1 m/s. The days becoming less sunny, going from 15 sunny days in August to 12 in September.

Next month (October) brings a further decline in the weather.

Wind

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

The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.

The average wind speed in Bologna is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in Bologna based on historical data.
Last Year
Historical Data
Typically, there is a 27% chance of rain on an average day in September, with total rainfall of approximately 40 mm. The maximum amount of rainfall per day is around 25 mm, which is moderate rain. On average, there are about 8 rainy days during September, so prepare to bring an umbrella.
September is one of the rainiest months in Bologna, here is a comparison with other months, total mm:
Bologna wettest month is September, where a typical day has a 37% chance of precipitation and 194 mm of rainfall per day. January, on the other hand, is the driest month with a mere 26% chance of precipitation and 41 mm of rainfall per day.

How was the weather last September in Bologna?

This is the weather in Bologna in September 2023:
1 September
☀️
+83°F
2 September
☀️
+86°F
3 September
☀️
+87°F
4 September
☀️
+83°F
5 September
☀️
+78°F
6 September
☀️
+83°F
7 September
☀️
+84°F
8 September
☀️
+85°F
9 September
☀️
+86°F
10 September
☀️
+86°F
11 September
☀️
+88°F
12 September
☀️
+90°F
13 September
☀️
+84°F
14 September
☀️
+84°F
15 September
☀️
+78°F
16 September
☀️
+80°F
17 September
☀️
+82°F
18 September
☀️
+84°F
19 September
☀️
+85°F
20 September
☀️
+82°F
21 September
☁️
+81°F
22 September
☀️
+77°F
23 September
☀️
+79°F
24 September
☀️
+72°F
25 September
☀️
+75°F
26 September
☀️
+78°F
27 September
☀️
+80°F
28 September
☀️
+80°F
29 September
☀️
+80°F
30 September
☀️
+82°F
In September 2023 Bologna had 29 sunny days, 1 cloudy days, and 0 rainy days. The average maximum temperature was +82°F, with an absolute maximum of +90°F and a minimum of +72°F. The average humidity was 62%, with a maximum of 100% and a minimum of 24%. The average wind speed was 2 m/s, with a maximum of 6 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

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

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

The average temperature was the lowest in 1980 (+63°F) and the highest in 2022 (+69°F). The driest year was 2006 with only 549 mm of rainfall, and the wettest year was 2019 with 11684 mm.

FAQ

Frequently asked questions about the weather in Bologna in September:

Is September a good time to visit Bologna?

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

Can you sunbathe in Bologna in September?

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

Is Bologna rainy in September?

Bologna 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 Bologna in September?

The amount of sunny days in Bologna 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 Bologna

Source of the data

For this page, we’ve looked at the typical weather in Bologna, 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.