Extended La Niña Pattern Delivers Exceptional North Pacific Season

A persistent La Niña pattern in the tropical Pacific has produced an exceptionally consistent winter swell season across the North Pacific corridor, with buoy data confirming above-average wave energy for the ninth consecutive month.

The pattern, which began developing in late 2024, has kept the subtropical jet stream displaced northward while strengthening the Aleutian Low — the primary swell generator for Hawaii, the Pacific Northwest, and Northern California. Buoy 46059, the offshore West Coast reference station, has recorded more days above fifteen feet of significant wave height than in any comparable period since records began.

Forecasters at Surfline noted that La Niña events of this duration tend to peak in their second winter. If the pattern holds through the Northern Hemisphere autumn, the 2026-27 season could be even more productive for exposed breaks from Mavericks to Sunset Beach.

Water temperatures have remained slightly cooler than normal along the California coast, which has improved water quality at many urban breaks where warm-water algae blooms have historically been a seasonal issue.