Green Harbor water temp

This data the coastal Green Harbor ocean 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 ocean temperature in Green Harbor

Water temperature in Green Harbor today is 66.2°F. Based on our historical data over a period of ten years, the warmest water in this day in the Cape Cod Bay near Green Harbor was recorded in 2018 and was 71.2°F, and the coldest was recorded in 2017 at 62.6°F. Sea water temperature in Green Harbor is expected to drop to 65.1°F in the next 10 days. September average water temperature in Green Harbor is 64.8°F, the minimum temperature is 59.2°F, and the maximum is 72°F.

The swimming season in Green Harbor lasts from July to August. During those months, Green Harbor water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Green Harbor in winter reaches 41.5°F, in spring 44.6°F, in summer the average temperature rises to 64.9°F, and in autumn it is 58.5°F.

Green Harbor water temperature now

Surf Forecast in Green Harbor 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 Green Harbor. 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 Green Harbor. Data in table shown for September 5, 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Green Harbor

Green Harbor weather forecast

Current temperature and weather

Data in a table show Green Harbor temperature today (September 5, 2025). For more information and forecast for a few days, go to the weather forecast Green Harbor.

0-3 h	3-6 h	6-9 h	9-12 h
64.6°F	65.5°F	66.7°F	68.7°F

12-15 h	15-18 h	18-21 h	21-24 h
75°F	78.8°F	73.2°F	69.1°F

Green Harbor water temperature by month

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

The nearest beaches and cities from Green Harbor 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
Peggotty Beach	65.5°F	78.8°F		2' 2"
Minot Beach	65.1°F	75.2°F		2' 2"
Scituate	64.6°F	75.2°F		2' 2"
Cohasset	64.6°F	75.2°F		2' 2"
Sandy Beach	64.6°F	75.2°F		2' 2"
Manomet	67.6°F	73.4°F		1' 8"
Weymouth	64.4°F	78.8°F		1' 7"
Ellisville	68°F	73.4°F		1' 8"
Race Point Beach	67.1°F	69.8°F		2' 4"
Nantasket Beach	64.4°F	80.6°F		1' 7"

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Green Harbor Beach

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Our report for Green Harbor 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.