Tallows - surf spot statistics

Best Surf Season (May - August)

As the Southern Hemisphere winter takes hold, the Tasman Sea becomes a cauldron of powerful mid-latitude storms. The Roaring Forties shift north, driving consistent long-period swell from the E through SSE quadrant directly into Tallows' east-southeast facing beach. Average wave periods climb to 9.5-9.6s, with a solid 1.5-1.7m of average height. More importantly, the frequency of offshore winds from the W, WNW, and NW peaks between 22% and 26%, creating the cleanest, most groomed conditions of the year. This is the window for the best quality surf.

Fair Surf Season (April & September)

The transition months of April and September offer a mixed bag. April retains a healthy average swell of 1.7m with a 9.2s period, but the percentage of ideal offshore wind drops to 17%. September sees a similar pattern with 1.5m at 8.8s and 19% ideal wind. Swell directions become more variable, and while you can score excellent waves when a strong cut-off low aligns with a westerly wind, the consistency and quality are less reliable than the peak winter months.

Low Surf Season (October - March)

From spring through summer and into early autumn, Tallows struggles. The prevailing wind regime shifts to a dominant onshore flow from the E, ESE, and SE, with the percentage of ideal offshore wind plummeting to between 10% and 15%. Average swell periods drop to the 8.2-8.9s range, producing weaker, more wind-affected waves. While the occasional pulse of long-period energy from a distant tropical cyclone can produce a brief window of clean, rideable surf, the default pattern is small, choppy, and generally poor quality. This is the time to chase other coasts or wait for a synoptic miracle.

October: Autumn's Decline

October marks a clear step down in quality as spring advances. Average swell height is 1.5m and period drops to 8.5s. The dominant swell directions are tied to the SE (17.6%), SSE (19.4%), and E (13.2%), with a significant increase in NNE and NE swell (19.6% combined) as tropical influences creep in. These northerly swells are poor for Tallows. Ideal offshore wind frequency falls to 15%, and the wind rose shows a dominance of N (20.2%) and NNE (11.9%) winds. These are offshore but often too strong (30-50+ kph) or variable, creating gusty conditions. When the wind aligns perfectly from the W or NW, you can still find some fun-sized waves, but they're rare.