Water temperature in Port-Cartier

This data the coastal Port-Cartier sea water temperature today, tomorrow and the upcoming days. Besides, you can also get information about the weather and surf forecast, as well as the data on sunrise / sunset and moonrise / moonset at a given point on any given day.

Current sea temperature in Port-Cartier

Water temperature in Port-Cartier today is 8.2°C. Based on our historical data over a period of ten years, the warmest water in this day in Port-Cartier was recorded in 2023 and was 13.4°C, and the coldest was recorded in 2020 at 4.9°C. Sea water temperature in Port-Cartier is expected to rise to 8.7°C in the next 10 days. September average water temperature in Port-Cartier is 11.1°C, the minimum temperature is 4.9°C, and the maximum is 17°C.

Throughout the year, the water temperature in Port-Cartier does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in Port-Cartier in winter reaches -0.2°C, in spring 1.5°C, in summer the average temperature rises to 12.9°C, and in autumn it is 7.5°C.

Port-Cartier water temperature now

The sea salinity in Port-Cartier is 27.33‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Port-Cartier for today

Another important indicators for a comfortable holiday on the beach are the presence and height of the waves, as well as the speed and direction of the wind. Please find below data on the swell size for Port-Cartier. We calculate the swell size based on the mean wave height (trough to crest) of each third highest wave. For more information on surf forecasts for the next ten days, please visit sea state forecast Port-Cartier. Data in table shown for 26 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Port-Cartier

Port-Cartier weather forecast

Current temperature and weather

Data in a table show Port-Cartier temperature today (26 September 2025). For more information and forecast for a few days, go to the weather forecast Port-Cartier.

0-3 h	3-6 h	6-9 h	9-12 h
9.3°C	9.5°C	10.1°C	13.6°C

12-15 h	15-18 h	18-21 h	21-24 h
17.1°C	15.9°C	13.5°C	11.7°C

Port-Cartier water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Port-Cartier. In addition to the table values, the graph below displays of changes average surface temperature during the year. Values are calculated based on the data over the past 10 years. Using them, you can check the water temperature in Port-Cartier on any day of this period that interests you. Click on the month link and you will see a table for each day, or alternatively you can view the temperature curve of the month and select 2 different years you want to compare, either in a table or as a curve

Chart monthly average water temperature in Port-Cartier

The nearest beaches and cities from Port-Cartier with the water temperature today, as well as the air temperature and the state of the weather during the day and the average wave height for today

	Water	Weather		Wave
Sept-Iles	7.6°C	15°C		0.45 m
Cap-Chat	11°C	13°C		0.46 m
Matane	9.9°C	14°C		0.25 m
Rimouski	7.8°C	13°C		0.25 m
Gaspe	12.1°C	20°C		0.57 m
Carleton Sur Mer	12.3°C	19°C		0.17 m
New Richmond	13.3°C	19°C		0.18 m
Campbellton	14°C	17°C		0.19 m
Bonaventure	12.5°C	15°C		0.28 m
Chandler	12.7°C	15°C		0.83 m

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Our report for Port-Cartier 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.