Pacific sea levels are rising faster than global average, says WMO Sea levels in the Pacific Ocean are rising more rapidly than the global average, endangering low-lying island nations, a World Meteorological Organisation (WMO) report revealed on Tuesday. While global sea levels have increased by an average of 3.4 millimeters annually over the last 30 years, the WMO report noted that regions north and east of Australia are experiencing significantly higher rates.