Eastham water temp

This data the coastal Eastham 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 Eastham

Water temperature in Eastham today is 65.5°F. Based on our historical data over a period of ten years, the warmest water in this day in the Atlantic Ocean near Eastham was recorded in 2018 and was 70.3°F, and the coldest was recorded in 2017 at 63°F. Sea water temperature in Eastham is expected to drop to 64.6°F in the next 10 days. September average water temperature in Eastham is 64.2°F, the minimum temperature is 58.8°F, and the maximum is 70.7°F.

The swimming season in Eastham lasts from July to August. During those months, Eastham water temperature does not drop below 68°F and therefore suitable for comfortable swimming. The average water temperature in Eastham in winter reaches 43.2°F, in spring 44.2°F, in summer the average temperature rises to 64°F, and in autumn it is 58.1°F.

Eastham water temperature now

The sea salinity in Eastham is 31.63‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Eastham 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 Eastham. 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 Eastham. 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 Eastham

Eastham weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
63.5°F	64.2°F	65.3°F	67.1°F

12-15 h	15-18 h	18-21 h	21-24 h
69.1°F	70.2°F	69.4°F	69.1°F

Eastham water temperature by month

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

The nearest beaches and cities from Eastham 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
Coast Guard Beach	65.5°F	69.8°F		2' 7"
Nauset Light Beach	65.5°F	69.8°F		2' 7"
Nauset Beach	65.5°F	69.8°F		2' 5"
Marconi Beach	64.9°F	69.8°F		2' 7"
Cahoon Hollow Beach	64.8°F	69.8°F		2' 8"
Lecount Hollow Beach	64.8°F	69.8°F		2' 8"
Pleasant Bay	65.3°F	71.6°F		2' 4"
Orleans	67.8°F	69.8°F		1' 9"
Skaket Beach	67.8°F	69.8°F		1' 9"
First Encounter Beach	67.8°F	69.8°F		1' 9"

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Our report for Eastham 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.