WASHINGTON (AP) — Driven by exceptionally warm ocean waters, Earth smashed a record for heat in May and is likely to keep on breaking high temperature marks, experts say.

The National Oceanic and Atmospheric Administration Monday said May’s average temperature on Earth of 59.93 degrees Fahrenheit (15.54 degrees Celsius) beat the old record set four years ago. In April, the globe tied the 2010 record for that month. Records go back to 1880.