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.

September: Spring Transition, Mixed Bag

September ushers in spring, and the consistency starts to break down. Swell average is 2.2m, period 10.6s — still solid but declining. Swell directions see a resurgence of E and ESE contributions (8.6% and 7.0%), alongside S (16.9%) and SSW (14.6%). This mix can produce good waves, but the wind becomes more challenging. NE winds jump to 18.5%, ENE to 12.1%, and ideal offshore wind drops to 22% (NW 1.4%, WNW 1.5%, W 2.3%, NNW 1.8%). The southwest winds (SW 16.2%, SSW 12.2%) are still common, often as post-frontal westerlies that can be clean. Overall, September is a fair month with less reliability. You may need to hunt for windows between frontal systems. When a high pressure builds over the interior, the combination of a solid SSW swell and light offshore can deliver magical sessions. But expect a lot of onshore days too.