World sea water temperatures

Water temperature in Vilnius in September

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Is it warm enough to swim in Vilnius in September? Average water temperature in Vilnius in September is 15.2°C and therefore is not suitable for comfortable swimming. The warmest water in Vilnius in September is 20°C, and the coldest is 9°C. Average high air temperature in Vilnius in September is 16°C, and average low temperature is 8°C. To find out the water temperature today and in the coming days, go to Current water temperature in Vilnius

Changes water temperature in Vilnius in September 2025, 2024

To get an accurate forecast for the water temperature in Vilnius 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 September19°C20°C
2 September20°C20°C
3 September20°C20°C
4 September19°C20°C
5 September19°C20°C
6 September20°C20°C
7 September20°C20°C
8 September19°C19°C
9 September 19°C
10 September 18°C
11 September 18°C
12 September 18°C
13 September 19°C
14 September 19°C
15 September 19°C
Day 2025 2024
16 September 19°C
17 September 19°C
18 September 18°C
19 September 18°C
20 September 17°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 16°C
28 September 15°C
29 September 14°C
30 September 12°C

Average water temperature in Vilnius in September over a decade

20152016201720182019
14.6°C16.1°C15.1°C
20202021202220232024
15.7°C12.2°C12.2°C17.6°C17.8°C

Weather and climate in Vilnius in September

This data display average monthly climate indicators in Vilnius in September based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature16°C
  • Average LOW temperature8°C
  • Average humidity
    79
  • Average rainfall days10 days
  • Average rainfall2.6''/66mm
  • Average daylight13h
  • Average sunshine4.7h
  • Average UV index3

Vilnius 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 Vilnius 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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