Saint John's Sea Temperature
Looking to find out what the sea water temperature in Saint John's is for today and the next few days? Below are data and charts that will give you information about sea temperatures in Saint John's and nearby locations.
Water temperature in Saint John's right now
Below is the current sea temperature for Saint John's, Antigua and Barbuda on 2nd October 2022.
- yesterday: 28.48° C (83.26° F)
- a week ago: 29.11° C (84.4° F)
This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.
The average sea temperature for Saint John's on October 2nd over the last 10 years is 29.18° C (84.53° F), with a low temperature of 28.55° C (83.39° F) and a high of 30.04° C (86.07° F).
Analysis and forecast for Saint John's water temperatures
The water temperature in Saint John's today is higher than the average temperature of 29.18° C (84.53° F) and the temperature on this day last year, 2nd October 2021, was 29.59° C (85.26° F).
The chart and table below shows the change in water temperature in Saint John's over the last 30 days:
|Date||Temperature (Celsius)||Temperature (Fahrenheit)|
|October 2||29.58° C||85.24° F|
|October 1||28.48° C||83.26° F|
|October 1||28.48° C||83.26° F|
|September 30||28.42° C||83.16° F|
|September 29||28.76° C||83.77° F|
|September 28||28.69° C||83.64° F|
|September 27||28.82° C||83.88° F|
|September 26||28.87° C||83.97° F|
|September 25||29.11° C||84.4° F|
|September 24||28.97° C||84.15° F|
|September 23||29.07° C||84.33° F|
|September 22||28.91° C||84.04° F|
|September 21||28.95° C||84.11° F|
|September 20||28.98° C||84.16° F|
|September 19||29.06° C||84.31° F|
|September 18||29.4° C||84.92° F|
|September 17||29.48° C||85.06° F|
|September 16||29.42° C||84.96° F|
|September 15||29.5° C||85.1° F|
|September 14||29.56° C||85.21° F|
|September 13||29.64° C||85.35° F|
|September 12||29.54° C||85.17° F|
|September 11||29.51° C||85.12° F|
|September 10||29.42° C||84.96° F|
|September 9||29.3° C||84.74° F|
|September 8||29.19° C||84.54° F|
|September 7||29.07° C||84.33° F|
|September 6||29.04° C||84.27° F|
|September 5||29.04° C||84.27° F|
|September 4||29.19° C||84.54° F|
The actual nearshore temperatures may vary by several degrees and this can also be heavily affected by weather. Strong winds can cause cold, deep waters to replace the surface waters that had been warmed by the sun, and heavy rain can also reduce the temperature of the sea surface temperature as well.
Water temperature in Saint John's by month
The chart below shows the monthly average water temperature in Saint John's.
For more detailed information on how the sea temperature in Saint John's changes for each month of the year, choose from the months below.
Saint John's map and nearby water temperatures
Locations near Saint John's
Why measure sea surface temperatures (SST) in Saint John's?
The ocean covers about 71% of the Earth's surface, and scientists record the sea surface temperature (SST) of locations such as Saint John's because they want to understand and learn how the ocean communicates with the atomosphere of Earth.
SST is one measure that provides information on the global climate, and it can be used to predict the weather in Saint John's as well as atmospheric model simulations and to study marine ecosystems in the area.
Data source and citation
Raw data for the calculations made to find the sea surface temperature in Saint John's comes from the National Oceanic and Atmospheric Administration (NOAA) and their 1/4° daily Optimum Interpolation Sea Surface Temperature.
The water temperature data is constructed by combining observations from different platforms (satellites, ships, buoys, and Argo floats) on a regular global grid. A spatially complete sea surface temperature map is then built by interpolating to fill in gaps in the data.
If you'd like to use any of the information above in the format it is presented, please use the citation tool below.
"Saint John's Sea Temperature". SeaTemperatures.net. Accessed on October 2, 2022. http://seatemperatures.net/central-america-and-the-caribbean/antigua-and-barbuda/saint-johns/.
"Saint John's Sea Temperature". SeaTemperatures.net, http://seatemperatures.net/central-america-and-the-caribbean/antigua-and-barbuda/saint-johns/. Accessed 2 October, 2022
Saint John's Sea Temperature. SeaTemperatures.net. Retrieved from http://seatemperatures.net/central-america-and-the-caribbean/antigua-and-barbuda/saint-johns/.