Leblon - surf spot statistics

Best Surf Season (May - August)

The austral winter fires up the South Atlantic, and Leblon reaps the rewards. As deep lows track north of the Antarctic pack ice, they send consistent, long-period S and SSE groundswells marching toward Rio. May sees the swell engine really start to hum, with average heights climbing to 1.5m and periods stretching past 11 seconds. June and July are the peak months, offering the highest percentage of offshore winds from the north (N, NW, NNW) – over 57% of the time the breeze is clean. This is prime time: expect punchy, well-shaped waves in the 1-2m range, with the occasional pumping 2m+ set on the best days. The combo of solid swell and favorable wind creates firing conditions along this south-facing beach.

Fair Surf Season (March - April & September - October)

These transitional months bring a mix of quality and compromise. March and April still see decent S swell from late-season storms, with average heights around 1.2-1.4m and periods in the 10-11 second range. However, the wind is more variable. Frontal systems passing south of Brazil can swing the breeze onshore from the S or SE, dropping the ideal wind percentage to around 48%. When a high-pressure system settles over the continent, expect light offshore northerlies and clean, fun waves. September and October see a similar pattern – the beginning of the spring transition. Swell remains solid in September (1.5m avg) but onshore winds become more frequent as the ITCZ shifts. October is the toughest month, with only 38% offshore wind. Patience and a keen eye on the forecast are key during these months.

Low Surf Season (November - February)

Summer settles in over Rio, and the surf takes a mellow turn. The South Atlantic storm track weakens and shifts poleward, resulting in smaller, shorter-period swell. Average heights drop to 1.1-1.3m and periods hover around 9.5-10 seconds. While there are still pulses of S swell from occasional cold fronts, they are less frequent and smaller. On the bright side, summer also brings a higher chance of light offshore winds, especially in December and January when the wind blows from the north up to 52% of the time. The waves become fun-sized and rippable, perfect for logging or groveling on a shortboard, but don't expect any pumping, firing days. It's a great time for beginners or for those looking to work on their technique in smaller, cleaner conditions.

October: The Windy Month

October is the most challenging month for consistent quality at Leblon. The average swell height drops to 1.3m, and the period shortens to 10.0s. Swell from the S and SSE still dominates (48.8% combined), but there are fewer big-wave days. The real issue is the wind: only 38% of the time does the wind blow from the offshore quadrants. The dominant wind is from the E (21.1%) and ENE (17.2%), both onshore directions. The result is frequently choppy, bumpy conditions. However, don't write October off entirely. When a high-pressure system stalls over Argentina, it can pump northerly winds down the coast, creating glassy, clean conditions. On those days, the swell, though smaller, can be fun and rippable. This month rewards the dedicated forecaster who can spot those narrow windows of opportunity.