World sea water temperatures

Water temperature in Dartmouth (NS)

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This data the coastal Dartmouth 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 Dartmouth

Water temperature in Dartmouth today is 19°C. Based on our historical data over a period of ten years, the warmest water in this day in Dartmouth was recorded in 2018 and was 19.8°C, and the coldest was recorded in 2024 at 14.2°C. Sea water temperature in Dartmouth is expected to drop to 16.8°C in the next 10 days. September average water temperature in Dartmouth is 16.6°C, the minimum temperature is 13.7°C, and the maximum is 21.3°C.

Throughout the year, the water temperature in Dartmouth does not rise above 20°C and therefore is not suitable for comfortable swimming. The average water temperature in Dartmouth in winter reaches 3.3°C, in spring 3.5°C, in summer the average temperature rises to 14.5°C, and in autumn it is 13.3°C.

Dartmouth water temperature now


5 September 2025
today temp
19°C
4 September 2025
yesterday temp
19.1°C


The sea salinity in Dartmouth is 30.92‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Dartmouth 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 Dartmouth. 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 Dartmouth. Data in table shown for 6 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

0-3 h3-6 h6-9 h9-12 h
2' 1"2' 0"2' 0"2' 2"
0.63 m0.62 m0.62 m0.65 m
12-15 h15-18 h18-21 h21-24 h
2' 5"2' 9"2' 11"2' 10"
0.74 m0.83 m0.88 m0.87 m

Surf report in Dartmouth

Dartmouth wave height and direction

Dartmouth weather forecast

Dartmouth wind speed and direction

Current temperature and weather

Data in a table show Dartmouth temperature today (6 September 2025). For more information and forecast for a few days, go to the weather forecast Dartmouth.

0-3 h3-6 h6-9 h9-12 h
17°C18.4°C18.7°C19.3°C
12-15 h15-18 h18-21 h21-24 h
19°C19.1°C19°C19°C

You may also be interested in other sections of our site for Dartmouth: Sunrise and Sunset, Tides

Dartmouth water temperature by month

These figures shows the average, minimum and maximum monthly sea temperature in Dartmouth. 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 Dartmouth 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

MonthAvrMinMax
January2.9°C-2.2°C6.3°Ccold
Sea water temperature in Dartmouth in January
February1.3°C-0.9°C3.9°Ccold
Sea water temperature in Dartmouth in February
March1.3°C-0.9°C5.1°Ccold
Sea water temperature in Dartmouth in March
April2.9°C-0.5°C7.6°Ccold
Sea water temperature in Dartmouth in April
May6.3°C2.2°C12.2°Ccold
Sea water temperature in Dartmouth in May
June10.8°C6.6°C17°Ccold
Sea water temperature in Dartmouth in June
July15.4°C10.8°C21.4°Ccold
Sea water temperature in Dartmouth in July
August17.4°C13.2°C20.7°Ccold
Sea water temperature in Dartmouth in August
September16.6°C13.7°C21.3°Ccold
Sea water temperature in Dartmouth in September
October13.7°C8.5°C17.4°Ccold
Sea water temperature in Dartmouth in October
November9.6°C4.5°C14.6°Ccold
Sea water temperature in Dartmouth in November
December5.8°C0.1°C10.2°Ccold
Sea water temperature in Dartmouth in December

Chart monthly average water temperature in Dartmouth

Water temperature in Dartmouth

Where is the warmest sea water in the world?

If you want to plan a vacation on the beach and enjoy the warm sea, choose the day of the year, region and the minimum comfortable sea/ocean temperature that interests you. As a result, you will get a list of countries and cities in which the average sea temperature or maximum temperature on this day over the past 10 years exceeds your chosen value

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

Nearby beaches and cities

The nearest beaches and cities from Dartmouth 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

WaterWeatherWave
Herring Cove20°C19°C0.83 m
Lawrencetown20.1°C19°C0.81 m
Rainbow Haven Beach20.1°C19°C0.81 m
Conrad's Beach20.1°C19°C0.81 m
Cow Bay20.1°C19°C0.81 m
Sambro20°C19°C0.83 m
Lawrencetown Beach19.9°C19°C0.81 m
Crystal Crescent Beach20°C19°C0.83 m
Tantallon19.5°C20°C0.35 m
Glen Haven19.5°C20°C0.35 m

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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 Dartmouth 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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