Surf Forecasts:
Barra do Sul surf forecast from 21 Aug 2026:
- Best quality surf: Saturday 22 Aug, 6AM (local time) - 6ft (1.8m), 10s period, SSE swell with glassy winds.
- Most powerful swell: Saturday 22 Aug, 6AM (local time) - 6ft (1.8m), 10s period, SSE swell with 627 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 12AM (local time) - 2.5ft (0.7m), 7s 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 Friday (Aug 21) at 12AM. The primary swell is predicted to be 0.7m and 7s period with a secondary swell of 0.1m and 12s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Barra do Sul in the next 16 days are 1.8m 10s and forecast to arrive on Saturday (Aug 22) at 6AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Friday (Aug 21) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 21st Aug) | 2.5ft (0.7m) 7s |
| Best Surf | 6AM (Sat 22nd Aug) | 6ft (1.8m) 10s |
| Most Powerful | 6AM (Sat 22nd Aug) | 6ft (1.8m) 10s |
Table - best surf conditions forecast for Barra do Sul over the next 16 days.
The Lowdown
Alright, Rusty here. Let's chew the fat on what this stretch of coast is offering. It starts off a bit of a dud, but if you play the waiting game, there's some gold in there.
The first few days, Thursday the 20th and Friday the 21st, are lean. Tiny 2ft waves from the east with no push behind them (energy barely registering at 47 to 40) and messy wind. Save your energy.
Saturday the 22nd shows a little pulse. The swell bumps up to 3ft from the southeast with a 10-second period, and the energy jumps to a moderate 218. But the wind is blowing cross-shore and then onshore, so the surface will be bumpy.
The first real window to get excited about opens Monday the 24th. The swell is 3 to 4ft from the SE, but the period is a meaty 16 to 17 seconds – that’s proper groundswell. The combined energy is strong, hitting 505 to 540. The water temp is a nice 68°, which is a touch warmer than usual for this time of year. The problem is the wind is still a little cross-onshore, making it only a marginal call.
The absolute standout of the whole forecast is Tuesday the 25th. The morning is dead glassy. Zero wind. The swell is a clean 3ft from the SE with a long 14-second period, and the energy is a solid 223. That’s your session. The conditions will be silky smooth and perfect at Barra do Sul. The afternoon stays glassy but the swell drops a little.
Wednesday the 26th afternoon and Thursday the 27th morning also offer glassy conditions with that consistent 3ft SE groundswell, so you've got a few good options.
Looking into the second week, Friday the 28th and Saturday the 29th mornings are worth a look. The swell jumps back to a fun 4ft from the east, and with a clean offshore or cross-off wind, the waves will have some shape. The energy is moderate (262 to 263), but the shorter 8-9 second period might make it a bit more crumbly.
After that, it gets a bit rough and onshore again as we head into September. So, if you can only paddle out once, make it Tuesday the 25th for the glass, or Friday the 28th morning for the size. Stay salty.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Thu afternoon, min 13°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Very mild (max 16°C on Tue afternoon, min 13°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 7 | E 7 | E 7 | E 7 | E 8 | SE 10 | SE 10 | SE 10 | SE 12 | SE 13 | SE 14 | SE 17 | SE 16 | SE 14 | SE 14 | SE 13 | SE 16 | SE 14 | SE 14 | SE 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 39 | 51 | 35 | 36 | 60 | 170 | 163 | 25 | 86 | 136 | 221 | 482 | 539 | 248 | 221 | 140 | 127 | 297 | 265 | 269 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | cross-off | cross-off | cross-on | cross | on | cross-on | cross | cross-on | cross-on | cross | cross-on | glassy | glassy | glassy | cross-on | cross-on | glassy | glassy |
High Tide | 7:32PM0.70m | 3:43AM0.52m | 2:16PM0.74m | 9:29PM0.68m | 11:28AM0.87m | 11:03PM0.76m | 12:18PM0.98m | 11:59PM0.88m | 12:54PM1.08m | 00:39AM1.00m | 1:26PM1.17m | 1:14AM1.11m | 1:57PM1.23m | 1:48AM1.20m | ||||||
Low Tide | 5:39PM0.68m | 00:17AM0.44m | 4:24AM0.52m | 12:36PM0.73m | 6:23PM0.60m | 5:38AM0.41m | 6:50PM0.52m | 6:19AM0.30m | 7:13PM0.45m | 6:51AM0.20m | 7:33PM0.39m | 7:18AM0.11m | 7:50PM0.35m | 7:43AM0.04m | 8:05PM0.32m | |||||
 |  |  | |  | | |  |  | | | | | | | |  |  | |  | |
 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — |
 | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 1 |
Temp °C | 22 | 22 | 21 | 22 | 16 | 15 | 15 | 14 | 15 | 15 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 18 |
Feels °C | 23 | 22 | 17 | 19 | 14 | 15 | 13 | 13 | 14 | 13 | 11 | 12 | 13 | 14 | 15 | 15 | 16 | 16 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | SE 10 | SE 12 | SE 13 | SE 14 | SE 17 | SE 16 | SE 14 | SE 14 | SE 13 | SE 12 | SE 14 | SE 14 | SE 14 |
| kJ | 39 | 51 | 35 | 36 | 60 | 48 | 36 | 25 | 86 | 136 | 221 | 482 | 539 | 248 | 221 | 140 | 124 | 297 | 265 | 269 |
Swell 2 Height (m) Direction Period (s) | SE 5 | E 12 | S 6 | SE 6 | SE 10 | — | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 7 | E 7 | E 7 | NE 5 | NE 5 | SE 16 | SE 16 | E 8 | — | — |
| kJ | 4 | 3 | 1 | 1 | 51 | — | 55 | 21 | 6 | 5 | 4 | 4 | 1 | 1 | 1 | 42 | 127 | 1 | — | — |
Swell 3 Height (m) Direction Period (s) | SE 10 | S 9 | E 11 | SE 8 | — | — | — | — | — | — | — | E 7 | — | E 7 | E 6 | ENE 5 | — | — | — | — |
| kJ | 4 | 2 | 2 | 3 | — | — | — | — | — | — | — | 4 | — | 1 | 1 | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SW 3 | WSW 3 | SE 5 | SE 10 | SE 10 | SE 5 | — | — | SE 4 | SE 4 | — | — | — | — | ENE 4 | ENE 5 | ENE 6 | ENE 6 |
| kJ | — | — | 4 | 1 | 38 | 170 | 163 | 16 | — | — | 8 | 15 | — | — | — | — | 4 | 42 | 65 | 104 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 205 | 0 | 42 | 19 | 19 | 19 | 104 | 29 | 19 | 152 | 29 | 29 | 57 | 0 | 0 | 0 | 19 | 19 | 0 | 0 |
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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