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Water temperature in Bratislava in September

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Is it warm enough to swim in Bratislava in September? Average water temperature in Bratislava in September is 18.1°C and therefore is not suitable for comfortable swimming. The warmest water in Bratislava in September is 26°C, and the coldest is 12°C. To find out the water temperature today and in the coming days, go to Current water temperature in Bratislava

Changes water temperature in Bratislava in September 2025, 2024

To get an accurate forecast for the water temperature in Bratislava for any chosen month, compare two years within a 10 year range using the chart below.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024
1 September21°C26°C
2 September20°C26°C
3 September20°C26°C
4 September19°C25°C
5 September19°C24°C
6 September 24°C
7 September 23°C
8 September 22°C
9 September 21°C
10 September 20°C
11 September 18°C
12 September 16°C
13 September 14°C
14 September 13°C
15 September 12°C
Day 2025 2024
16 September 12°C
17 September 13°C
18 September 14°C
19 September 15°C
20 September 16°C
21 September 16°C
22 September 16°C
23 September 16°C
24 September 16°C
25 September 16°C
26 September 16°C
27 September 15°C
28 September 14°C
29 September 14°C
30 September 13°C

Bratislava water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in September?

Want to know where the water temperature in September is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 16°C
 Average temperature  Maximum temperature

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Bratislava is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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