Map
Grumari
Today's Surf Conditions at Grumari
Spot Conditions Map
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Today's Surf & Wind Forecast (Hourly)
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Spot Overview & Description
Nestled west of Prainha, Grumari is a true gem of Rio’s coastline, where steep, jungle-clad hills frame a long, golden sweep of sand. The setting alone is worth the drive—about an hour from Ipanema—but the surf seals the deal. This beach is a reliable performer, soaking up SSW swell and handling waves from 3 to 8 feet with ease. Both lefts and rights peel over a forgiving sandy bottom, making it a welcoming playground for beginners and a solid option for more experienced surfers looking to dial in their turns. Tide windows are generous: low, mid, and high all produce rideable waves, but watch the extremes—very low or very high tide can send the lineup into messy closeouts. The preferred north wind helps groom things out, keeping the surface cleaner. Access involves a pleasant walk through the park, and once you’re in the water, the paddle back is easiest near the right corner. Drift too far toward the middle of the beach, and you’ll earn a workout fighting the waves on the return. During the week, the crowd factor is low, giving you room to roam along the long beach. Weekends, however, bring the crowds and a competitive edge, especially around that right corner—keep your cool and share the stoke. The best consistency rolls in during autumn and winter, when the swell machine fires up more regularly. Whether you’re a newbie finding your feet or a seasoned surfer chasing that smooth, running wall, Grumari delivers a dose of wild beauty and reliable waves.
Best Surf Season & Climatology
Best Surf Season (May - August)
During the Southern Hemisphere winter, Grumari comes alive as a series of strong cold fronts and low-pressure systems track across the South Atlantic, firing long-period swell from the S and SSW quadrants directly into the beach's SSE-facing exposure. Average wave heights climb to 1.2-1.3m with periods consistently above 10 seconds, often reaching 11 seconds. The South Atlantic high-pressure system strengthens, promoting offshore winds from the N and NW quadrants a majority of the time. This combination produces clean, powerful surf that is both rippable and sometimes pumping. The highest percentage of ideal wind occurs in June (55%) and July (53%), making these the prime months for consistent sessions.
Fair Surf Season (March - April & September - October)
As the seasons transition, the swell window remains active but becomes more variable. March and April still enjoy robust S and SSE swell from late-season storms, with average heights around 1.0-1.2m and periods in the 10-second range. Wind patterns become less reliable, with increasing influence of the trade winds from the E and ENE, which can degrade conditions. September and October see a similar dynamic: the South Atlantic still generates sizable groundswell, but the frequency of ideal offshore winds drops to 37% and 31% respectively. This is a time of trade-offs—when the wind cooperates, the surf can be excellent, but those windows are narrower.
Low Surf Season (November - February)
The austral summer brings a lull in Southern Ocean storm activity. Average swell heights drop to 0.9-1.0m, and the dominant swell shifts eastwards with more ESE and SE energy that struggles to wrap effectively into the cove. Periods decrease to the 9-10 second range, resulting in less powerful waves. The trade wind regime dominates, with onshore E to ENE winds blowing 20-30% of the time, chopping up the surface. Offshore winds from the N and NW are less frequent, though they do occur. February stands out with a slightly higher ideal wind percentage (47%), but the smaller swell size limits quality. It's a time for smaller boards and patience.
Detailed Surf Information for Grumari
Detailed Surf Forecast
Access our detailed 8-day swell and wind forecast charts for Grumari with tidal graphs, period ranges, and daily forecast text summaries.
Swell & Wind Statistics
Explore historical swell consistency, wave heights, and offshore wind windows month-by-month, compiled from over 40 years of data.
Historical Surf Report
Browse the historical database archives to view past wave reports and understand spot climatology during specific years and months.
