Coffee Bay - surf spot statistics

Best Surf Season (May - August)

As the Southern Hemisphere winter takes hold, the breathing of the planet shifts and the Indian Ocean begins to pulse with purpose. For Coffee Bay, this is prime time. The combination of long-period groundswells from the deep Southern Ocean and the increased frequency of offshore westerly winds creates the most consistent and high-quality surf of the year. Average wave heights sit in the 2.0-2.3m range, with periods stretching beyond 11 seconds — that's powerful, long-period energy that wraps beautifully around the headlands. The wind is ideal a solid 31-46% of the time, with clean westerly and northwesterly flows grooming the lines. This is when Coffee Bay earns its reputation as a world-class wave. Expect pumping, heavy sets and plenty of rippable walls.

Fair Surf Season (April & September)

The shoulder months bring a mix of everything. In April, the swell is still robust at 2.1m average and periods are long (10.7s), but the wind starts to swing more onshore from the northeast. Ideal wind sits at 26%, which means you need to pick your windows. September sees the transition back to spring: swell holds at 2.2m and periods remain decent at 10.6s, but the offshore breeze consistency drops to 22%. During these months, the magic often comes in short but sweet bursts when a high-pressure system stalls over the interior, delivering glassy mornings and groomed, punchy surf.

Low Surf Season (October - March)

Summer brings the heat, and with it, the trade winds dominate. From October through March, the prevailing wind is from the northeast and east — directly onshore at Coffee Bay, ruining the wave quality. Average wave heights are still around 1.9-2.2m, but the periods shorten to 9.6-10.3s, producing more average, punchy and often choppy conditions. Ideal wind plummets to just 13-18%. The swell direction remains favorable (E through SSE), but the constant onshore flow makes it a struggle. That said, if a strong cold front pushes through and swings the wind to the west, you can score some fun to good waves before the trade winds reestablish. For the most part, though, it's a grovel or a waiting game.

August: Late Winter, Still Firing

August holds strong as winter transitions to spring. Average swell height increases to 2.3m — the highest of any month — while the period dips slightly to 11.1s (still long period). Swell direction remains south-southwest dominant: S (16.2%) and SSW (15.6%), but with a slight uptick in E and ENE directions (8.9% and 8.5% respectively). The wind ideal percentage drops to 31% as NE winds increase to 16.7% and ENE rises to 8.4%. However, there are still plenty of offshore windows: NW (4.1%), WNW (3.2%), W (3.8%), and NNW (4.1%). The larger swell average means more days with pumping, heavy waves, often in the 1.5-2.5m range and occasionally pushing over 2.5m (especially from S and SSW). August is still firmly in the best season, but the window for clean conditions narrows a bit. Early mornings tend to be best before the sea breeze fills in. If you time it right, you can score some of the biggest waves of the year.