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Water temperature in Lewisporte (NL) in September

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Is it warm enough to swim in Lewisporte in September? Average water temperature in Lewisporte in September is 13.1°C and therefore is not suitable for comfortable swimming. The warmest sea in Lewisporte in September is 19.7°C, and the coldest is 9.3°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Lewisporte

Changes water temperature in Lewisporte in September 2025, 2024

To get an accurate forecast for the water temperature in Lewisporte for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Lewisporte, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of September.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
1 September15.7°C16.7°C12.6°C18.9°C
2 September16.1°C16.9°C11.8°C18.9°C
3 September16°C16.7°C11.8°C19°C
4 September15.9°C16.8°C12°C18.6°C
5 September16°C16.9°C11.9°C19.7°C
6 September16.4°C16.4°C11.3°C19°C
7 September16.8°C16.5°C11.4°C17.7°C
8 September14.8°C16.1°C10.9°C17.4°C
9 September15.3°C15.8°C10.8°C17.1°C
10 September15°C16.8°C11.2°C18°C
11 September14.3°C16.1°C11.2°C17.4°C
12 September14°C16.4°C10.6°C16.8°C
13 September14°C16.4°C10.9°C16.4°C
14 September13.4°C16°C10.7°C16.1°C
15 September14.2°C16.5°C11°C16.5°C
Day 2025 2024 Min Max
16 September13.4°C15.9°C10.8°C16.5°C
17 September13.5°C15.8°C10.7°C16.1°C
18 September14.5°C16.3°C10.7°C16.3°C
19 September14.9°C16.1°C10.5°C16.1°C
20 September14.4°C15.6°C10.5°C15.6°C
21 September13.8°C15.2°C10.8°C15.2°C
22 September13.6°C14.5°C10.3°C15.2°C
23 September13.1°C14.8°C10.6°C14.9°C
24 September12.9°C14.3°C10.3°C15°C
25 September12.6°C13.9°C9.9°C14.6°C
26 September13°C13.1°C9.6°C14.4°C
27 September 13.8°C9.6°C14.1°C
28 September 13.8°C9.5°C13.8°C
29 September 12.7°C9.4°C13.2°C
30 September 12.5°C9.3°C13.5°C
Lewisporte water temp chart in September

Average water temperature in Lewisporte in September over a decade

20152016201720182019
12.2°C12°C13.1°C14.5°C11.6°C
20202021202220232024
13.2°C14.2°C15.6°C14.6°C15.5°C

Lewisporte sea state in September

Chart comparing the height of waves in Lewisporte in September over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Lewisporte in September

Lewisporte 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

Temperature in neighboring cities

The nearest locations with the average water temperature in September. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Twillingate12.9°C8.6°C19.7°C
Gander Bay13°C8.9°C19.4°C
Newtown12.5°C8.9°C17.7°C
Clarenville13.3°C10.4°C16.4°C
Bonavista12.6°C8.6°C18.1°C
Carbonear13.3°C9.3°C17.6°C
Bay Roberts13.4°C9.4°C17.9°C
Marystown14.4°C10.8°C18.8°C
Grand Bank14.5°C10.3°C19.8°C
Torbay13°C8.3°C17.8°C

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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 Lewisporte 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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