The Streets seasonal overview
Best Surf Season (November - February)
The winter half of the year is the most reliable window at The Streets, even though 'reliable' is a relative term along this east-facing stretch of coast. Average surf heights hover around 0.9-1.0m (3-3.3ft), with average periods in the 7.4-8.1s range. This is when the NO-ONO-O-OSO swell window, which translates to NE-ENE-E-ESE, is most active, feeding the beach with the most consistent lines. The ideal surfing wind score also peaks around 15-16% during December, January and February, as passing cold fronts introduce more SW-W-WNW offshore flow. It won't be firing every day, but the chances of scoring clean, rideable 2-4ft waves are better than at any other time of year.
Fair Surf Season (March - April and September - October)
Spring and early fall occupy the middle ground. March and April still see plenty of ENE and ESE swell, but the trade wind machine strengthens and the percentage of ideal surfing wind drops. September and October, meanwhile, sit squarely in hurricane season, when warm water and tropical disturbances can inject longer-period E and ENE swell. The catch is that these same systems often bring strong onshore winds or unstable conditions, so the window between groundswell arrival and wind deterioration can be short. Still, when it lines up, the waves run bigger and more powerful than the seasonal averages suggest.
Low Surf Season (May - August)
The summer months are the slow season. Average surf heights sink to 0.5-0.7m (1.5-2.5ft) and the dominant ESE trade winds blow onshore much of the time. The swell direction is usually favorable, but the energy is too small and the surface too windblown to produce much beyond micro-grovelers. The only exceptions are passing tropical storms or distant hurricanes that track close enough to send real ESE and SE groundswell. Those are rare, and when they do arrive, the wind is often the deciding factor.