Atlantic Ocean Water Temperature Today & Regional Overview

Current Water Temperature

The water temperature in the Atlantic Ocean today ranges from -0.2°C (Tasiilaq, Greenland) to 29.7°C (Ponta da Areia, Brazil).

As of today, the minimum water temperature in the Atlantic Ocean ranges less than 41°F (5°C). Such water is extremely cold and not recommended for swimming without proper preparation. In these conditions, the risk of hypothermia is very high, and prolonged exposure to the water can be hazardous to your health. If you decide to swim, it is important to have the appropriate gear, such as a wetsuit. Typically, only experienced swimmers or those who practice winter swimming venture into such waters.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Water Temperature and Swimming Conditions Throughout the Year

Month	Min	Max
January	-3°C	31°C
February	-3°C	32°C
March	-4°C	31°C
April	-3°C	32°C
May	-3°C	33°C
June	-3°C	32°C
July	-2°C	34°C
August	0°C	34°C
September	0°C	33°C
October	-2°C	32°C
November	-2°C	31°C
December	-3°C	31°C

The Atlantic Ocean spans a wide range of water temperatures because it crosses tropical, temperate and polar zones. In the tropical Atlantic waters typically stay warm year‑round at about 24–30 °C. Subtropical regions commonly range from roughly 18–28 °C, warming toward the higher end in summer. Temperate portions of the North and South Atlantic experience larger seasonal swings: summer surface temperatures often rise to about 15–24 °C, while winter values can fall to around 5–15 °C depending on latitude and local currents. Near the subpolar and polar margins, surface temperatures can be near freezing in winter, roughly −1–4 °C, and only rise to about 4–12 °C in summer. Coastal upwelling zones and major currents such as the Gulf Stream and the North Atlantic Drift can push local temperatures several degrees above or below these averages.

Swimming Conditions

Swimming in the Atlantic is widely practiced and generally allowed where beaches and coastlines provide safe access, but suitability depends heavily on temperature and hazards. In tropical and many subtropical areas, water temperatures of 24–30 °C make swimming comfortable year‑round. In temperate zones, swimming is most comfortable in late spring through early autumn when surface temperatures reach 15–24 °C; many swimmers tolerate 15–20 °C with acclimation or wetsuits. Waters below about 15 °C increase the risk of cold shock and hypothermia for unprotected swimmers, and below 10 °C are hazardous without proper thermal protection. Beyond temperature, strong currents, rip tides, waves, water quality and local regulations determine whether swimming is advisable, so checking local guidance and safety flags is recommended before entering the water.

Popular Resorts with the Warmest Water Today