Oceans' temps highest on record this summer

WASHINGTON -- Sea-surface temperatures worldwide have been the hottest on record over the last three months, the National Oceanic and Atmospheric Administration said Wednesday.

Ocean temperatures averaged 62.5 degrees Fahrenheit in the June-August period, 1.04 degree higher than normal for the period.

And for August the world sea-surface average was 62.4 degrees, 1.03 higher than usual, also the warmest for August on record, NOAA's National Climatic Data Center said.

The report is based on data back to 1880.

The combined land and water temperature worldwide was 61.2 degrees, third warmest on record for the three-month period. For August it was 58.2 degrees, fourth warmest.

Climate change has been raising the planet's average temperature steadily in recent decades. All of the 10 hottest years on record have occurred since 1997.