Sea Surface Temperature

This chart shows the temperature of the sea surface over the course of a whole year. Each picture shows 1 month and the animation shows how it changes over that time. The temperatures range from -2 degrees celsius, up to 35 degrees celsius.

Sea surface temperature is the temperature of the top millimeter of the ocean's surface. Sea surface temperatures influence weather, including hurricanes, as well as plant and animal life in the ocean. Like Earth's land surface, sea surface temperatures are warmer near the equator and colder near the poles. Currents like giant rivers move warm and cold water around the world's oceans. Some of these currents flow on the surface, and they are obvious in sea surface temperature images.

Warm ocean waters help form clouds and affect weather patterns. The sea's surface temperature is also correlated to the availability of tiny ocean plants, called phytoplankton. For all of these reasons scientists monitor the sea's surface temperature. These maps show satellite measurements of the sea's surface temperature for a given day, or for a span of days.