Water temperature in Bologna in September
Is it warm enough to swim in Bologna in September? Average water temperature in Bologna in September is 21.1°C and therefore suitable for comfortable swimming. The warmest water in Bologna in September is 27°C, and the coldest is 16°C. To find out the water temperature today and in the coming days, go to Current water temperature in Bologna
Changes water temperature in Bologna in September 2025, 2024
To get an accurate forecast for the water temperature in Bologna for any chosen month, compare two years within a 10 year range using the chart below.
You can choose any other years:
Day |
2025 |
2024 |
1 September | 23°C | 26°C |
2 September | 22°C | 26°C |
3 September | 23°C | 26°C |
4 September | 23°C | 25°C |
5 September | 23°C | 24°C |
6 September | 23°C | 24°C |
7 September | | 23°C |
8 September | | 23°C |
9 September | | 23°C |
10 September | | 22°C |
11 September | | 21°C |
12 September | | 20°C |
13 September | | 20°C |
14 September | | 19°C |
15 September | | 18°C |
Day |
2025 |
2024 |
16 September | | 17°C |
17 September | | 16°C |
18 September | | 16°C |
19 September | | 17°C |
20 September | | 17°C |
21 September | | 17°C |
22 September | | 17°C |
23 September | | 18°C |
24 September | | 19°C |
25 September | | 19°C |
26 September | | 19°C |
27 September | | 19°C |
28 September | | 19°C |
29 September | | 19°C |
30 September | | 18°C |
Average water temperature in Bologna in September over a decade
2015 | 2016 | 2017 | 2018 | 2019 |
| | 19.9°C | 21.8°C | 20.7°C |
2020 | 2021 | 2022 | 2023 | 2024 |
22.1°C | 21°C | 20.6°C | 22.8°C | 20.2°C |
Bologna water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below