Water temperature in Cayman Brac

This data the coastal Cayman Brac 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 Cayman Brac

Water temperature in Cayman Brac today is 31°C. Based on our historical data over a period of ten years, the warmest water in this day in the Caribbean Sea near Cayman Brac was recorded in 2023 and was 30.8°C, and the coldest was recorded in 2007 at 29.5°C. Sea water temperature in Cayman Brac is expected to drop to 30°C in the next 10 days. September average water temperature in Cayman Brac is 30.1°C, the minimum temperature is 28.9°C, and the maximum is 31.3°C.

The swimming season in Cayman Brac lasts from January to December, twelve months per year! During those months, Cayman Brac water temperature does not drop below 20°C and therefore suitable for comfortable swimming. The average water temperature in Cayman Brac in winter reaches 27.3°C, in spring 27.7°C, in summer the average temperature rises to 29.5°C, and in autumn it is 29.5°C.

Cayman Brac water temperature now

The sea salinity in Cayman Brac is 36.07‰, and the average salinity of the World Ocean is 35‰.

Surf Forecast in Cayman Brac 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 Cayman Brac. 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 Cayman Brac. 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 Cayman Brac

Cayman Brac weather forecast

Current temperature and weather

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

0-3 h	3-6 h	6-9 h	9-12 h
30.2°C	29.9°C	29.7°C	29.7°C

12-15 h	15-18 h	18-21 h	21-24 h
31.3°C	31°C	30.5°C	30.2°C

Cayman Brac water temperature by month

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

The nearest beaches and cities from Cayman Brac 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
Jardines de la Reina	31.2°C	30°C		0.26 m
Seven Mile Beach	30.9°C	32°C		0.43 m
Negril	30.7°C	29°C		0.34 m
Lucea	30.6°C	28°C		0.26 m
Santa Cruz del Sur	31.3°C	29°C		0.06 m
Sandy Bay	30.5°C	28°C		0.24 m
Montego Bay	30.6°C	28°C		0.21 m
Niquero	30.7°C	30°C		0.09 m
Playa Ancon	30.8°C	33°C		0.21 m
Savanna La Mar	31.1°C	29°C		0.27 m

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Our report for Cayman Brac 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.