T-Street - surf spot statistics

Best Surf Season (October - March)

The North Pacific roars to life during the autumn months, and T-Street feels the full force of the winter swell window. From October through March, a steady procession of extratropical cyclones marching across the Gulf of Alaska and the far North Pacific generate long-period SW to W swells that wrap perfectly into this southwest-facing beach. Combined with frequent high-pressure systems over the Great Basin that deliver offshore flow from the NE to NNE quadrants, the result is clean, powerful surf. Wave heights average between 0.8m and 1.0m, with periods often exceeding 12 seconds — punchy, rippable waves that hold up well. The peak months of December through February see ideal wind conditions over 50% of the time, making this the most consistent window for quality surf.

Fair Surf Season (April & September)

As the winter storm track begins to weaken in April, the swell regime shifts. Long-period SW to W groundswells still arrive with respectable height (0.9-1.0m average) and excellent period (13-14s), but the trade-off is a marked increase in onshore flow. The wind is ideal only 22% of the time in April, and by May it plummets to 10%. Still, when a strong North Pacific low lingers and a weak coastal eddy holds on, T-Street can fire. September offers a similar transitional feel: the first autumn storms start to rekindle the swell window, though the lingering summer wind pattern — dominated by westerly and southwesterly breezes — keeps the clean-surf percentage low (18%). These months are a gamble, but the payoff can be a glassy session with waist-to-chest high lines peeling down the point.

Low Surf Season (May - August)

Summer brings the doldrums to T-Street. The North Pacific storm track retreats northward, and the primary swell source shifts to a weak, intermittent mix of Southern Hemisphere groundswell and local windswell. Average wave heights drop to 0.8m, and while the periods remain deceptively long (13-14s), the energy is often too anemic to produce quality shape. The bigger culprit, however, is the wind. From May through August, the prevailing onshore flow from the SW and W directions dominates, with ideal offshore winds occurring only 8-10% of the time. This creates choppy, disorganized conditions most days. The few bright spots come when a rogue SW groundswell coincides with a rare early-morning northeast land breeze — but these windows are fleeting. It’s a time for longboards and low expectations.

September: Autumn Stirring

September marks the beginning of the transition. Average swell height remains 0.8m, period holds at 13.6s, but the wind ideal jumps to 18% — the highest since April. Swell directions see a slight shift: SW (43.7%) and WSW (26.6%) still dominate, but SSW (24.3%) contributes more. Onshore winds from WSW (19.8%) and W (19.1%) are still prevalent, but the frequency of NE (2.8%) and NNE (3.2%) offshore winds increases. Early-season North Pacific lows can send pulses of SW groundswell that, when paired with a morning land breeze, produce waist-high, glassy waves. September is the month to start watching the forecast again.