Surf Forecasts:
Barra do Sul surf forecast from 8 Aug 2026:
- Best quality surf: Thursday 13 Aug, 12PM (local time) - 2.5ft (0.8m), 15s period, SSE swell with glassy winds.
- Most powerful swell: Monday 10 Aug, 6AM (local time) - 4ft (1.2m), 13s period, SE swell with 486 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 6PM (local time) - 2ft (0.6m), 15s period with SE 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 Saturday (Aug 08) at 6PM. The primary swell is predicted to be 0.6m and 15s period with a secondary swell of 0.7m and 5s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Barra do Sul in the next 16 days are 1.2m 13s and forecast to arrive on Monday (Aug 10) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 8th Aug) | 2ft (0.6m) 15s |
| Best Surf | 12PM (Thu 13th Aug) | 2.5ft (0.8m) 15s |
| Most Powerful | 6AM (Mon 10th Aug) | 4ft (1.2m) 13s |
Table - best surf conditions forecast for Barra do Sul over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s just say the first week and a half of this forecast is a tough one for Barra do Sul. We’re looking at a long stretch of days with small, weak swell and messy wind. On the bright side, things get interesting later on, but you’ll need some patience.
The first real glimmer of something decent doesn’t show up until Tuesday the 12th of August. That’s when the wind finally starts to cooperate, swinging cross-offshore, so the surface gets clean. The swell is small though, around 2ft to 3ft from the southeast, with a period of 12 seconds. It’s weak, with combined energy around 133 to 194 (moderate energy). Not a standout, but it's surfable. The water is a touch warmer than normal for this time of year, so you won’t need the thickest wetsuit.
Then we hit a real gem. The 18th of August, Tuesday morning, is where it’s at. The wind drops right out, going glassy, with a nice 6ft easterly swell rolling in, period of 9 seconds. The combined energy jumps to 649 (strong wave energy), so there’s some heft behind it. That afternoon, the wind swings offshore from the WNW at 12 mph, keeping it clean. This is the best on offer. For a more experienced surfer, this is your window. At 6ft, beginners might find it a bit much.
It holds for the 19th of August as well, with clean offshore winds, 6ft easterly swell, and energy up to 742 (strong wave energy). The period sits at 9 to 10 seconds, so it’s got some push. The 20th of August morning is still good, with glassy conditions and a 4ft easterly swell, but it starts to drop off that afternoon.
After that, the following days are a mix of small, weak swells and onshore wind, nothing to write home about. The 23rd of August morning has a brief moment of glassy conditions with a 3ft southeast swell, but it’s small and inconsistent.
So, the long story short: the first week is a write-off for good waves. The standout is definitely the 18th and 19th of August. That’s your time to go if you can. Keep an eye on it, because long-range calls like that are promising but not locked in.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Sat night. Very mild (max 19°C on Sat afternoon, min 12°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Tue afternoon. Warm (max 20°C on Thu afternoon, min 13°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
AM | 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) | SSE 14 | SE 16 | SE 14 | SSE 15 | SE 13 | SE 5 | SSE 5 | SE 6 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 15 | SE 14 | SE 13 | SE 14 | SE 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 175 | 119 | 91 | 84 | 55 | 87 | 90 | 84 | 82 | 162 | 122 | 118 | 184 | 118 | 90 | 67 | 188 | 160 | 87 | 169 | 134 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross-off | cross-off | cross-off | off | glassy | glassy | on | glassy | cross-on | cross-on | cross |
High Tide | 11:52AM1.04m | 11:46PM0.81m | 12:50PM1.15m | 00:36AM0.90m | 1:35PM1.22m | 1:16AM1.01m | 2:13PM1.25m | 1:53AM1.10m | 2:48PM1.24m | 2:29AM1.18m | 3:20PM1.20m | 3:04AM1.22m | 3:50PM1.14m | ||||||||
Low Tide | 7:25PM0.39m | 6:59AM0.20m | 8:06PM0.37m | 7:38AM0.10m | 8:39PM0.38m | 8:11AM0.03m | 9:05PM0.42m | 8:37AM-0.00m | 9:12PM0.46m | 8:52AM0.01m | 8:44PM0.45m | 9:01AM0.05m | 8:42PM0.40m | ||||||||
 |  |  | | |  | |  |  | | | | | | | |  | | | | | |
 | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — |
 | — | 5:51 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — |
mm | 1 | — | 5 | 3 | 2 | 3 | 1 | — | — | — | 1 | — | — | — | — | — | — | 2 | — | 3 | 3 |
Temp °C | 17 | 19 | 18 | 16 | 14 | 14 | 12 | 14 | 14 | 14 | 14 | 13 | 14 | 15 | 16 | 19 | 20 | 19 | 18 | 18 | 17 |
Feels °C | 17 | 20 | 19 | 14 | 11 | 12 | 8 | 11 | 12 | 12 | 13 | 12 | 13 | 15 | 18 | 20 | 21 | 21 | 17 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | ENE 5 | E 7 | E 6 | E 7 | E 7 | E 8 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | E 5 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | SE 14 | SE 13 |
| kJ | 43 | 29 | 22 | 33 | 31 | 23 | 24 | 33 | 82 | 162 | 122 | 118 | 184 | 118 | 28 | 34 | 48 | 40 | 31 | 169 | 134 |
Swell 2 Height (m) Direction Period (s) | SE 14 | SE 16 | SE 14 | SE 13 | SE 13 | E 13 | — | SE 13 | E 8 | E 8 | E 8 | ENE 7 | ENE 7 | E 5 | SE 12 | SE 12 | SE 15 | SE 14 | SE 13 | E 6 | E 6 |
| kJ | 73 | 119 | 91 | 63 | 42 | 3 | — | 84 | 31 | 29 | 28 | 18 | 10 | 11 | 90 | 67 | 188 | 160 | 87 | 20 | 20 |
Swell 3 Height (m) Direction Period (s) | SSE 14 | SE 5 | ENE 8 | SSE 15 | — | — | — | — | — | — | — | — | — | E 7 | — | SE 16 | — | — | SE 17 | SE 8 | SE 7 |
| kJ | 175 | 7 | 19 | 84 | — | — | — | — | — | — | — | — | — | 4 | — | 38 | — | — | 45 | 16 | 16 |
Wind waves Height (m) Direction Period (s) | ESE 5 | ENE 4 | — | SSE 5 | SE 5 | SE 5 | SSE 5 | SE 6 | SE 5 | — | — | — | — | — | ENE 6 | — | — | — | — | — | SE 7 |
| kJ | 20 | 16 | — | 61 | 55 | 87 | 90 | 72 | 35 | — | — | — | — | — | 43 | — | — | — | — | — | 35 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 70 | 19 | 0 | 100 | 96 | 91 | 100 | 29 | 19 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 0 | 30 | 29 | 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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