Surf Forecasts:
Ribanceira surf forecast from 15 Aug 2026:
- Best quality surf: Saturday 22 Aug, 12AM (local time) - 7ft (2.2m), 8s period, SSW swell with offshore winds.
- Most powerful swell: Saturday 22 Aug, 9PM (local time) - 7.5ft (2.3m), 12s period, S swell with 1,547 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 12AM (local time) - 3.5ft (1.0m), 8s period with S swell.
Best Forecast Surf Conditions for Ribanceira this week:
The surf forecast for Ribanceira over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 12AM. The primary swell is predicted to be 1.0m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Ribanceira in the next 16 days are 2.3m 12s and forecast to arrive on Saturday (Aug 22) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 8s period and expected on Tuesday (Aug 18) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 20th Aug) | 3.5ft (1.0m) 8s |
| Best Surf | 12AM (Sat 22nd Aug) | 7ft (2.2m) 8s |
| Most Powerful | 9PM (Sat 22nd Aug) | 7.5ft (2.3m) 12s |
Table - best surf conditions forecast for Ribanceira over the next 16 days.
The Lowdown
G’day, it’s Rusty here. Let’s be straight with you—this 16-day stretch for Ribanceira is a real mixed bag, with a long, flat, and frankly boring start that’s going to test your patience. The good news is that once we get past the middle of the month, things fire up proper, and there’s a standout window that’s worth circling on the calendar.
The opening days, from the 15th through the 20th, are grim. We’re talking tiny, weak swell—the combined energy is mostly in the single or double digits, like 7 or 22—with onshore breezes messing things up. It’s a desert out there. You’d be better off doing maintenance on your board than paddling out. There’s a slight tease on the afternoon of the 21st when a pulse of 6ft SSW swell shows up, but the short 8-second period and the “questionable tide” call keep it from being worth the drive. That energy reading of 620 is still weak-to-moderate, so it’s not the one.
The real story starts on Saturday the 22nd. The morning is looking clean with a 7ft S swell at 10 seconds and a cross-offshore breeze. The energy is picking up to 849, which is solidly moderate. It’s surfable, but it’s not the peak. Then Sunday the 23rd brings a proper upgrade: a 7ft S swell at 12 seconds, light SW offshore wind in the morning, and very good conditions. That’s a proper session right there. The afternoon gets a bit messier with a cross-offshore, but still clean.
But the standout, the one you tell your mates about, is Monday the 24th. This is the pick of the entire run. We’ve got an 8ft S swell with a long 15-second period, light offshore SW winds in the morning, and an energy reading of 2942—that’s strong, very strong. This is groundswell, proper power, and the description says it’s excellent for experienced surfers. This is a big, clean day. For the sandbar here, that long period means the waves will be well-shaped but might be a bit straight at times, so pick your peaks. This is not for beginners; at 8ft, it’s experts only.
The surf stays very good through Tuesday the 25th, with a 6ft S swell at 14 seconds and glassy conditions all day. The energy is still strong at 1324 and 1388. This is another great day, with calm winds and clean faces. It’s a step down in size from Monday, but still a fantastic session.
From Wednesday the 26th, the quality starts to fade. The morning is marginal, and then the afternoon sees a big, messy 12ft SSE pulse with a short 10-second period and cross-onshore winds rocking up. That’s a lot of water moving but it’s going to be ugly. The combined energy hits 4060, which is very strong, but with that wind and short period, it’s going to be a washing machine. For a sandbar setup, this is more interesting for the kite crew than for us paddle surfers.
The last few days of the month taper off in a disappointing way. Thursday the 27th and Friday the 28th are poor, with rain showers and onshore winds. Saturday the 29th has a glimmer of hope in the morning with a clean 3ft SSW swell and light offshore winds, but it’s small and “very ordinary.” Then Sunday the 30th is poor again with onshore winds.
So, there it is. A long, flat 7-day gap to start, followed by a proper run of swell from the 22nd to the 25th. If you can only pick one, make it Monday the 24th—that’s the big one. The Saturday and Sunday before it are solid backups. After that, I’d probably find something else to do. The water temp is a touch above average for this time of year at 66°, so it’s comfortable. Stay stoked, and be ready to charge when it comes.
Rusty
Short Range ForecastLight rain (total 6mm), mostly falling on Sat afternoon. Warm (max 30°C on Tue morning, min 17°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 25°C on Tue afternoon, min 18°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | E 8 | E 8 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | S 11 | S 10 | S 10 | S 9 | S 9 | SSW 8 | S 8 | SSE 7 | S 8 | S 8 | S 8 | SSW 8 | SSW 8 |
Wave Graph | ||||||||||||||||||||
553 | 565 | 221 | 108 | 80 | 33 | 19 | 9 | 8 | 7 | 6 | 6 | 11 | 110 | 79 | 33 | 24 | 20 | 392 | 629 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | cross-on | on | cross-on | cross-on | cross-off | cross-on | off | cross-off | glassy | on | on | glassy | off | cross-off | off |
High Tide | 4:05PM0.61m | 4:01AM0.67m | 4:29PM0.58m | 4:36AM0.63m | 4:56PM0.54m | 5:22AM0.56m | 5:34PM0.49m | 00:07AM0.22m | 6:24AM0.50m | 6:24PM0.45m | 7:19AM0.45m | 12:30PM0.36m | 7:12PM0.42m | 8:18AM0.40m | 1:10PM0.39m | 8:07PM0.39m | ||||
Low Tide | 9:37PM0.18m | 10:07AM0.10m | 9:54PM0.19m | 10:53AM0.18m | 9:49PM0.20m | 11:51AM0.24m | 9:43PM0.20m | 9:36AM0.29m | 12:35PM0.29m | 10:01PM0.21m | 9:36AM0.32m | 3:01PM0.32m | 3:13AM0.21m | 4:25PM0.28m | ||||||
— | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | |
5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | |
mm | 5 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 18 | 18 | 21 | 21 | 19 | 24 | 24 | 19 | 30 | 25 | 21 | 23 | 22 | 19 | 23 | 23 | 20 | 22 | 20 | 15 |
Feels °C | 18 | 17 | 19 | 18 | 17 | 22 | 22 | 19 | 29 | 27 | 23 | 23 | 21 | 21 | 22 | 21 | 20 | 20 | 16 | 12 |
Swell 1 Height (m) Direction Period (s) | S 11 | E 8 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | S 11 | ENE 8 | S 10 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | SE 6 | ENE 8 | ENE 7 | S 8 | S 8 |
351 | 565 | 141 | 108 | 80 | 33 | 19 | 9 | 493 | 7 | 324 | 197 | 165 | 119 | 122 | 21 | 150 | 99 | 223 | 432 | |
Swell 2 Height (m) Direction Period (s) | — | S 11 | S 10 | E 13 | — | — | SE 9 | — | S 10 | — | S 9 | S 9 | SSW 8 | S 8 | SSE 7 | S 8 | S 8 | S 8 | ENE 7 | ENE 8 |
— | 233 | 221 | 13 | — | — | 3 | — | 8 | — | 6 | 6 | 11 | 110 | 79 | 33 | 22 | 20 | 94 | 103 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | E 13 | S 8 | SE 13 | SE 13 | S 9 | SE 12 | SE 6 | SSE 6 | S 16 | S 15 |
— | — | — | — | — | — | — | — | — | — | 4 | 1 | 7 | 7 | 14 | 6 | 6 | 4 | 5 | 18 | |
Wind waves Height (m) Direction Period (s) | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | NE 8 | NE 9 | NE 8 | NE 8 | SW 2 | SSW 4 | SSW 4 | — | NE 3 | NE 8 | N 4 | SSW 4 | SSW 8 | SSW 8 |
553 | 709 | 645 | 493 | 531 | 617 | 702 | 628 | 711 | 479 | 1 | 7 | 5 | — | 4 | 284 | 24 | 5 | 392 | 629 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 5 | 5 | 6 | 47 | 221 | 70 | 121 | 23 | 122 | 4 | 5 | 4 | 17 | 0 | 2 | 290 | 5 | 4 | 17 | 0 |
Best forecast wave conditions in Santa Catarina - Sul | ||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||
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Information about the Ribanceira Surf forecast
The above surf forecast table for Ribanceira provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ribanceira can be found by selecting the local surf guide option on the grey menu. Our Ribanceira surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ribanceira) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Ribanceira may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Ribanceira is 6 km (4 miles) from Imbituba. If you plan a holiday in Santa Catarina - Sul, look for hotels and other accommodation in Imbituba. Imbituba has rooms for a wide range of budgets as well as car hire and transport links.











