Santa Rosa - surf spot statistics

Best Surf Season (December - April)

The austral summer brings the most consistent and powerful swell to Santa Rosa. As the South Pacific storm track shifts south, a steady stream of groundswells arrives from the SSW and SW quadrants, often with periods in the 10-14s range and heights averaging 1.5-1.7m. The average swell direction aligns perfectly with the beach's WSW exposure, delivering punchy, well-organized lines. However, the wind remains a challenge: the dominant S/SSW flow creates onshore or cross-shore conditions the vast majority of the time. Still, when the wind briefly backs off or shifts to a light easterly breeze — a rare occurrence (<5% of the time) — the waves clean up into rippable, fun-sized surf. This window, though narrow, offers the best chance for glassy sessions with moderate offshore texture.

Fair Surf Season (May & November)

May and November represent transitional months. Swell heights remain respectable (1.6-1.8m on average) and periods hold in the 13s range, but the wind patterns begin to shift. In May, the S/SSW wind becomes stronger and more persistent, pushing the 'ideal wind' percentage to nearly zero. November sees a slight increase in lighter wind events but still no substantial offshore flow. These months can deliver solid, powerful surf — especially around the new and full moons when the swell energy peaks — but you'll be battling textured, sometimes choppy conditions. Only the most dedicated are rewarded with clean, rideable waves when the wind aligns just right.

Low Surf Season (June - October)

The austral winter is the low season for surf quality at Santa Rosa. From June through October, the South Pacific storm belt is at its strongest, producing a consistent run of long-period SSW and S swells that average 1.8-1.9m with periods around 13s. This is the peak in raw swell energy — many days offer pumping, heavy wave heights in the 1.5-2.5m range. But the catch is the wind: a persistent, often strong S/SSW flow slams directly into the beach, creating onshore, choppy, messy conditions that blow out the wave faces. The 'ideal wind' percentage drops to a flat 0% in most months. While there are occasional lulls or slight directional shifts, the default state is blown-out, textured surf. Only the most wave-starved or well-protected breaks will offer anything clean. This is the time to be chasing sheltered points or taking a breather.

December: The Season Turns

December marks the beginning of the best season with an average swell height of 1.5m and period of 12.8s. The swell direction is once again dominated by SSW (87.7%) and SW (10%), with nearly half the waves (49.6%) in the 1-1.5m range and another 34.3% in 1.5-2m. This is fun, good, solid surf. The wind pattern is still heavily from the S (41.9%) and SSW (45.7%), but the speeds are generally lower — mostly 0-10kph and 10-20kph. Interestingly, the ideal offshore wind fraction remains 0% in the data, but the frequency of lighter winds and occasional shifts to the east (ESE/SE) increase slightly (0.1% combined). December offers the promise of the summer season: consistent, rideable waves with the potential for clean conditions as the wind regime slowly transitions. Keep an eye on the morning glass-offs.