Surf Forecasts:
Barra da Lagoa surf forecast from 17 Aug 2026:
- Best quality surf: Sunday 23 Aug, 12AM (local time) - 2.5ft (0.7m), 12s period, SSE swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 12AM (local time) - 2.5ft (0.7m), 12s period, SSE swell with 160 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 12AM (local time) - 2.5ft (0.7m), 12s period with SSE swell.
Best Forecast Surf Conditions for Barra da Lagoa this week:
The surf forecast for Barra da Lagoa over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 23) at 12AM. The primary swell is predicted to be 0.7m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Barra da Lagoa in the next 16 days are 0.7m 12s and forecast to arrive on Sunday (Aug 23) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 12s period and expected on Monday (Aug 24) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 23rd Aug) | 2.5ft (0.7m) 12s |
| Best Surf | 12AM (Sun 23rd Aug) | 2.5ft (0.7m) 12s |
| Most Powerful | 12AM (Sun 23rd Aug) | 2.5ft (0.7m) 12s |
Table - best surf conditions forecast for Barra da Lagoa over the next 16 days.
The Lowdown
Alright, let’s talk about the waves around here. It’s been a grim stretch, I’m not gonna sugarcoat it. The forecast runs for 16 days, but we’re looking at a big gap at the start with nothing to ride. The first real chance of a wave doesn’t show up until about a week in, and it’s small and messy. The whole run is a struggle, but there’s one decent pulse right at the very end.
The only spot worth talking about is Barra da Lagoa. The water is 65°, which is about what you’d expect for this time of year – nothing unusual.
The first week is a dead loss. The earliest we see a bump is Monday the 26th of August, with a weak 3ft ENE swell, but the wind is cross-on and choppy, and the energy is low at 58. That’s not even worth paddling for. The best of the early stuff is the morning of Thursday the 29th of August, with a clean cross-off wind from the S, but it’s flat – no height at all.
Then we get to the big one. On Tuesday the 1st of September, the afternoon brings a solid 5ft SSE groundswell. The period is 12 seconds, so there’s some real power behind it, and the combined swell energy is a moderate 658. That’s a proper pulse. The wind is onshore from the E, which isn’t perfect for clean faces, but for a spot that’s been starved for waves, it’s a total game-changer. The swell direction is SSE, which is close to the optimum ENE direction for the break, so it should wrap in okay. This is the only real standout of the whole forecast – it’s not perfect, but it’s the best we’ve got. Don’t expect a groomed wave, but if you’re desperate, that’s your window.
The rest of the run is a bust. Even the Sunday the 30th of August has a 4ft ENE swell, but the wind is clean, and the energy is still low at 84. That’s better than nothing, but it’s a far cry from the Tuesday session.
So, to sum it up: the first week is a total write-off. The second week has a few tiny, crappy days, but the real hope is that Tuesday afternoon on the 1st of September. For a spot that’s usually fairly consistent, this is a long dry spell, but it’s not unheard of. Keep an eye on that forecast, as long-range calls can shift.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Tue afternoon, min 17°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Thu morning, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 10 | ENE 8 | SE 8 | N 3 | NNW 4 | ENE 8 | SE 12 | SE 13 | ENE 8 | N 3 | NNE 4 | NNW 3 | SSE 5 | ENE 8 | S 9 | S 9 | SE 15 | SSE 12 | S 11 | S 11 | S 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 57 | 0 | 3 | 6 | 9 | 0 | 6 | 7 | 0 | 2 | 16 | 7 | 3 | 0 | 0 | 0 | 9 | 160 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross-on | glassy | cross-off | cross | glassy | cross | cross-on | cross-off | cross-off | cross | cross-off | cross-off | cross | cross-off | glassy | cross-on | cross-off |
High Tide | 4:14PM0.67m | 4:34AM0.74m | 4:34PM0.64m | 5:18AM0.65m | 4:52PM0.60m | 6:21AM0.56m | 1:10PM0.55m | 12:32PM0.61m | 12:33PM0.68m | 11:20PM0.51m | 12:47PM0.75m | 11:56PM0.60m | |||||||||
Low Tide | 10:11AM0.28m | 9:31PM0.27m | 10:02AM0.36m | 9:58PM0.27m | 9:57AM0.44m | 10:32PM0.30m | 9:38AM0.50m | 2:43PM0.54m | 2:21AM0.34m | 4:22AM0.29m | 6:28PM0.44m | 5:27AM0.21m | 6:42PM0.38m | ||||||||
 |  |  | | | | | |  | | | | |  | | | |  | | | | |
 | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — |
 | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 20 | 18 | 23 | 24 | 21 | 20 | 21 | 19 | 20 | 20 | 20 | 20 | 17 | 16 | 16 | 15 | 14 | 14 | 14 | 14 |
Feels °C | 19 | 19 | 18 | 23 | 24 | 23 | 21 | 23 | 22 | 19 | 19 | 21 | 18 | 14 | 13 | 15 | 11 | 10 | 13 | 13 | 10 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | S 9 | S 9 | S 8 | S 9 | S 11 | S 11 | NE 8 |
| kJ | 435 | 466 | 413 | 298 | 390 | 284 | 176 | 135 | 102 | 83 | 81 | 94 | 147 | 244 | 469 | 357 | 279 | 450 | 639 | 595 | 15 |
Swell 2 Height (m) Direction Period (s) | SSE 10 | SSE 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 8 | S 7 | S 7 | S 9 | S 8 | S 8 | NW 4 | ENE 9 | ENE 9 | ENE 9 | SSE 12 | ENE 8 | ENE 8 | NE 8 |
| kJ | 57 | 33 | 7 | 8 | 2 | 2 | 2 | 6 | 37 | 33 | 60 | 22 | 12 | 2 | 213 | 121 | 121 | 160 | 37 | 24 | 16 |
Swell 3 Height (m) Direction Period (s) | — | — | SE 8 | SE 8 | SE 8 | E 14 | SE 12 | SE 13 | S 12 | S 10 | SE 12 | SSE 6 | SSE 5 | — | — | — | SE 15 | ENE 8 | — | — | — |
| kJ | — | — | 3 | 3 | 3 | 4 | 6 | 7 | 11 | 31 | 6 | 3 | 3 | — | — | — | 9 | 62 | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 8 | — | — | N 3 | NNW 4 | S 4 | S 4 | S 4 | — | N 3 | NNE 4 | NNW 3 | WNW 3 | S 8 | S 9 | — | — | — | — | — | S 12 |
| kJ | 239 | — | — | 6 | 9 | 9 | 14 | 2 | — | 2 | 16 | 7 | 3 | 57 | 731 | — | — | — | — | — | 997 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 43 | 56 | 43 | 5 | 43 | 4 | 13 | 21 | 3 | 3 | 67 | 3 | 3 | 25 | 13 | 13 | 89 | 0 | 4 | 21 | 17 |
Best forecast wave conditions in Florianópolis | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Barra da Lagoa Surf forecast
The above surf forecast table for Barra da Lagoa provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Barra da Lagoa can be found by selecting the local surf guide option on the grey menu. Our Barra da Lagoa 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 da Lagoa) 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 da Lagoa 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 da Lagoa is 9 km (6 miles) from Florianopolis. If you plan a holiday in Florianópolis, look for hotels and other accommodation in Florianopolis. Florianopolis has rooms for a wide range of budgets as well as car hire and transport links.
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