Water temperature in Guantanamo Bay

This data the coastal Guantanamo Bay 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 Guantanamo Bay

Water temperature in Guantanamo Bay today is 30.5°C. Based on our historical data over a period of ten years, the warmest water in this day in the Caribbean Sea near Guantanamo Bay was recorded in 2024 and was 30.7°C, and the coldest was recorded in 2018 at 29.2°C. Sea water temperature in Guantanamo Bay is expected to drop to 29.7°C in the next 10 days. September average water temperature in Guantanamo Bay is 29.9°C, the minimum temperature is 28.9°C, and the maximum is 31.2°C.

The swimming season in Guantanamo Bay lasts from January to December, twelve months per year! During those months, Guantanamo Bay water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Guantanamo Bay in winter reaches 27.4°C, in spring 27.7°C, in summer the average temperature rises to 29.5°C, and in autumn it is 29.4°C.

Guantanamo Bay water temperature now

The sea salinity in Guantanamo Bay is 36.22‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Guantanamo Bay 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 Guantanamo Bay. 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 Guantanamo Bay. Data in table shown for 27 September 2025, time in GMT 0 format (you can change the time zone on the sea state forecast page)

Surf report in Guantanamo Bay

Guantanamo Bay weather forecast

Current temperature and weather

Data in a table show Guantanamo Bay temperature today (27 September 2025). For more information and forecast for a few days, go to the weather forecast Guantanamo Bay.

0-3 h	3-6 h	6-9 h	9-12 h
27°C	26°C	25.6°C	25.5°C

12-15 h	15-18 h	18-21 h	21-24 h
25.8°C	26.5°C	26.9°C	27.1°C

Guantanamo Bay water temperature by month

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

The nearest beaches and cities from Guantanamo Bay 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
Dame Marie	30.1°C	26°C		0.46 m
Grand'Anse	30.2°C	26°C		0.49 m
Jeremie	30.5°C	28°C		0.31 m
Les Irois	30°C	26°C		0.76 m
Mole Saint Nicolas	30.6°C	22°C		0.61 m
Tiburon	30°C	28°C		0.76 m
Les Anglais	30°C	26°C		0.73 m
Baie De Henne	30.7°C	22°C		0.49 m
Chardonniere	30.1°C	26°C		0.66 m
Port A Piment	30.1°C	26°C		0.66 m

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Our report for Guantanamo Bay 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.