Merimbula Bar - surf spot statistics

Best Surf Season (May - August)

Winter along the NSW South Coast fires up the Merimbula Bar consistently. As the Pacific storm track intensifies, powerful S and SSW groundswells push into the bay with average periods climbing into the 9s range. The Tasman Sea low-pressure systems align perfectly with the coastline, and the offshore wind windows from the NW and NNW become frequent and reliable – up to 44% of the time in July. This is when the bar truly comes alive: clean, hollow peaks breaking over the sandbanks, with wave heights often in the 1.5–2.5 m ‘pumping’ range. If you time it with a solid 10-second-plus long-period pulse, you’ll find some of the most rippable waves of the year.

Fair Surf Season (April & September)

These shoulder months offer a blend of building or fading winter energy. April sees the tail end of autumn with increasing S/SSW swell and a 36% chance of offshore winds – a good transition window with average periods around 9.1 s. September holds onto winter’s momentum: 33% ideal wind and a mix of S/SSW and ENE/NE swells. Conditions can be inconsistent but deliver excellent sessions when a strong low passes through. Expect punchy, rideable waves in the 1–1.5 m ‘fun’ range, with occasional pumping sets as the season shifts.

Low Surf Season (October - March)

Spring and summer bring a frustrating combination for Merimbula Bar. The dominant wind regime shifts to NE and NNE onshore breezes that rip the surface apart, and the ideal offshore window from the NW/NNW drops below 30% (as low as 22% in January). Swell directions become dominated by the east quadrant (NE, ENE, E) – which are shadowed or wrap weakly around the headlands, rarely producing the clean, lined-up waves the bar is known for. Wave periods drop to 8 s or less, making for chop and weak, short-period lines. While there can be the occasional fun groveler on a tiny SSE groundswell, the overall quality is poor. Most of the swell is small to medium (0.5–1.5 m) and often wind-affected. For consistent, high-quality surf, focus on the winter months.

June: Peak Winter Consistency

June is a classic winter month along the Sapphire Coast. The average swell height is 1.7 m with a period of 9.3 s, maintaining that potent winter energy. The swell direction distribution is strongly southerly: S (12.8%), SSW (11.3%), SSE (11.9%), and SE (9.8%) dominate, with the east quadrant diminished to secondary status. This is ideal for Merimbula Bar, wrapping in cleanly from the east-facing funnel. Wind conditions are superb, with an ideal offshore percentage of 41%. The prevailing wind pattern sees a strong westerly component: SW (17.8%), WSW (14.7%), and W (8.8%) are common, but these are cross-shore to offshore when the bar is facing SSE. The true offshore NNW and NW winds are less frequent but still present. When the synoptic setup is right – a low in the Tasman Sea and a high moving over the continent – long-period S/SSW swell arrives with light NW winds, creating glassy, lined-up waves. Wave heights frequently hit the 1.5–2.5 m range, offering powerful, hollow rides. June is consistently good.