Water temperature in Harbour Breton (NL) in September
Is it warm enough to swim in Harbour Breton in September? Average water temperature in Harbour Breton in September is 14.4°C and therefore is not suitable for comfortable swimming. The warmest sea in Harbour Breton in September is 19.7°C, and the coldest is 9.8°C. Average high air temperature in Harbour Breton in September is 16°C, and average low temperature is 10°C. To find out the sea temperature today and in the coming days, go to Current sea temperature in Harbour Breton
Changes water temperature in Harbour Breton in September 2025, 2024
To get an accurate forecast for the water temperature in Harbour Breton for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Harbour Breton, 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:
| Day | 2025 | 2024 | Min | Max |
|---|---|---|---|---|
| 1 September | 14.5°C | 15.9°C | 14.2°C | 18.1°C |
| 2 September | 14.7°C | 15.8°C | 13.8°C | 19°C |
| 3 September | 13.8°C | 16°C | 13.7°C | 19.7°C |
| 4 September | 15.3°C | 15.8°C | 13.8°C | 19.4°C |
| 5 September | 16.1°C | 15.6°C | 13.9°C | 19°C |
| 6 September | 15.7°C | 15.8°C | 13.7°C | 18.5°C |
| 7 September | 15.7°C | 13.7°C | 18.7°C | |
| 8 September | 15.9°C | 13.5°C | 18.3°C | |
| 9 September | 16.5°C | 13.1°C | 17.8°C | |
| 10 September | 16.1°C | 13.2°C | 16.7°C | |
| 11 September | 16°C | 13.1°C | 16.6°C | |
| 12 September | 16.2°C | 11.5°C | 16.4°C | |
| 13 September | 16.2°C | 12.4°C | 16.2°C | |
| 14 September | 16.3°C | 12.8°C | 16.3°C | |
| 15 September | 16.2°C | 12.7°C | 16.2°C |
| Day | 2025 | 2024 | Min | Max |
|---|---|---|---|---|
| 16 September | 15.7°C | 12.7°C | 16.6°C | |
| 17 September | 16°C | 12.4°C | 18°C | |
| 18 September | 16.1°C | 10.9°C | 17.1°C | |
| 19 September | 15.9°C | 10.6°C | 16.8°C | |
| 20 September | 15.7°C | 10.9°C | 16.3°C | |
| 21 September | 15.9°C | 10.8°C | 15.9°C | |
| 22 September | 15.5°C | 10.4°C | 15.7°C | |
| 23 September | 15.5°C | 10.6°C | 15.7°C | |
| 24 September | 15.2°C | 10.7°C | 15.6°C | |
| 25 September | 14.9°C | 10.7°C | 15.7°C | |
| 26 September | 14.9°C | 11.3°C | 15.6°C | |
| 27 September | 14.5°C | 11.3°C | 15.3°C | |
| 28 September | 14.3°C | 11.1°C | 14.9°C | |
| 29 September | 14.6°C | 10.6°C | 14.6°C | |
| 30 September | 14.3°C | 9.8°C | 14.3°C |
Average water temperature in Harbour Breton in September over a decade
| 2015 | 2016 | 2017 | 2018 | 2019 |
| 14.7°C | 13.1°C | 14.3°C | 14.9°C | 12.6°C |
| 2020 | 2021 | 2022 | 2023 | 2024 |
| 14.5°C | 15.5°C | 15.3°C | 16.1°C | 15.6°C |
Harbour Breton sea state in September
Chart comparing the height of waves in Harbour Breton 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.
Weather and climate in Harbour Breton in September
This data display average monthly climate indicators in Harbour Breton 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 temperature10°C
- Average rainfall5.5''/140mm
Harbour Breton water temperature during other months:
You can also view information about water temperature for other months by clicking on the month button below
