Surf Forecasts:
Barra do Sul surf forecast from 17 Aug 2026:
- Best quality surf: Sunday 23 Aug, 12PM (local time) - 6ft (1.8m), 8s period, SSE swell with glassy winds.
- Most powerful swell: Sunday 23 Aug, 12PM (local time) - 6ft (1.8m), 8s period, SSE swell with 424 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 6AM (local time) - 3.5ft (1.1m), 8s period with E swell.
Best Forecast Surf Conditions for Barra do Sul this week:
The surf forecast for Barra do Sul over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 6AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.1m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Barra do Sul in the next 16 days are 1.8m 8s and forecast to arrive on Sunday (Aug 23) at 12PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Aug 21) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 18th Aug) | 3.5ft (1.1m) 8s |
| Best Surf | 12PM (Sun 23rd Aug) | 6ft (1.8m) 8s |
| Most Powerful | 12PM (Sun 23rd Aug) | 6ft (1.8m) 8s |
Table - best surf conditions forecast for Barra do Sul over the next 16 days.
The Lowdown
G'day, I'm Rusty. Let me tell you, the next 16 days at Barra do Sul are a bit of a head-scratcher for the most part, but we've got a couple of moments that'll make the paddle out worth it.
We start off Monday the 17th with a small east swell running about 5ft, but the wind is all over the shop and the period is a short 8 seconds. The energy is weak (266). It's a no-go. Tuesday the 18th morning is where we get our first real look. The swell drops to 4ft, but the wind goes dead calm, glassy as a lake. The energy is moderate (160). It's not big, but it'll be clean as a whistle. That's your best bet for the first week.
From there, we hit a flat, boring patch. The waves get tiny, the wind gets messy. Sunday the 23rd afternoon has a little 3ft swell from the south-east with a glassy surface, but it's still nothing to write home about.
The only real standout, and it's a big one, is Monday the 24th of August. A solid 7ft south-southeast swell arrives with a long 12-second period. The energy is massive (1557). This is a serious, powerful wave. If you're not an expert, stay on the beach. The wind will be a cross-onshore breeze, so it won't be perfect, but the size and grunt will make for some heavy, hollow sections. The water temp is about average for the season.
After that, it fades away into the next week. The best of the rest comes on Sunday the 30th and Monday the 31st. We get a 3ft to 3ft south-east swell with a 10-12 second period and glassy to clean offshore winds. The energy is moderate (343-348). These are the days you get a nice, long board out and just enjoy being in the water. Not a classic, but a solid end to the run.
So, the big highlight is the 7ft swell on Monday the 24th for the big-wave hunters, and the clean, small days on the 30th and 31st for the rest of us. The rest of the time, you're better off doing something else.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 18°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Thu night, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 | ENE 7 | E 7 | E 8 | E 8 | E 8 | ENE 8 | SSE 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 223 | 253 | 239 | 195 | 157 | 195 | 137 | 124 | 93 | 72 | 55 | 57 | 69 | 86 | 127 | 140 | 68 | 73 | 93 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | on | cross | glassy | cross-on | glassy | cross | cross-on | glassy | glassy | cross-on | off | cross-off | cross-off | cross-off | off | on | cross-on |
High Tide | 4:52AM1.09m | 5:14PM0.93m | 5:35AM0.99m | 5:43PM0.85m | 6:29AM0.88m | 6:19PM0.77m | 7:48AM0.79m | 2:56PM0.73m | 7:32PM0.70m | 3:43AM0.52m | 2:16PM0.74m | 9:29PM0.68m | 11:28AM0.87m | 11:03PM0.76m | |||||
Low Tide | 9:30PM0.29m | 9:59AM0.27m | 10:02PM0.27m | 10:26AM0.38m | 10:38PM0.30m | 10:56AM0.49m | 11:20PM0.36m | 11:32AM0.61m | 5:39PM0.68m | 00:17AM0.44m | 4:24AM0.52m | 12:36PM0.73m | 6:23PM0.60m | 5:38AM0.41m | 6:50PM0.52m | ||||
 |  |  |  | | |  | | | | | | | | | | | |  | |
 | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — |
 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 19 | 21 | 22 | 19 | 25 | 27 | 25 | 21 | 20 | 17 | 21 | 21 | 22 | 20 | 21 | 16 | 18 | 19 | 16 |
Feels °C | 20 | 23 | 23 | 20 | 27 | 29 | 28 | 22 | 21 | 18 | 23 | 22 | 23 | 15 | 17 | 13 | 18 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 7 | ENE 7 | E 7 | E 8 | E 8 | E 8 | ENE 8 | E 8 |
| kJ | 223 | 253 | 239 | 195 | 157 | 195 | 137 | 124 | 93 | 72 | 55 | 57 | 69 | 86 | 127 | 140 | 68 | 73 | 33 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SSE 10 | SSE 10 | SSE 9 | SE 9 | SE 8 | SE 8 | S 8 | E 13 | — | S 7 | SSE 6 | SSE 6 | SE 6 | — | SSE 10 | SE 5 | SE 10 | SE 15 |
| kJ | 16 | 10 | 9 | 17 | 3 | 3 | 3 | 1 | 3 | — | 1 | 4 | 3 | 1 | — | 38 | 4 | 25 | 8 |
Swell 3 Height (m) Direction Period (s) | E 13 | E 12 | — | — | — | S 9 | E 14 | S 9 | — | SE 13 | SE 11 | E 12 | E 11 | SSE 6 | S 8 | — | SSE 10 | — | — |
| kJ | 13 | 3 | — | — | — | 2 | 4 | 2 | — | 7 | 4 | 3 | 3 | 3 | 5 | — | 10 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 4 | SSE 4 | — | — | — | — | SW 3 | — | — | — | — | SSE 6 |
| kJ | — | — | — | — | — | — | — | 7 | 2 | — | — | — | — | 2 | — | — | — | — | 93 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 21 | 19 | 66 | 19 | 0 | 105 | 0 | 29 | 100 | 0 | 0 | 183 | 0 | 19 | 25 | 0 | 0 | 100 | 29 |
Best forecast wave conditions in Santa Catarina - Norte | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
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Information about the Barra do Sul Surf forecast
The above surf forecast table for Barra do Sul provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Barra do Sul can be found by selecting the local surf guide option on the grey menu. Our Barra do Sul 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 (Barra do Sul) 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 Barra do Sul 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.
Barra do Sul is 15 km (9 miles) from Barra Velha. If you plan a holiday in Santa Catarina - Norte, look for hotels and other accommodation in Barra Velha. Barra Velha has rooms for a wide range of budgets as well as car hire and transport links.
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