Surf Forecasts:
Barra da Lagoa surf forecast from 31 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 12PM (local time) - 5ft (1.5m), 8s period, ESE swell with offshore winds.
- Most powerful swell: Tuesday 1 Sep, 9PM (local time) - 8ft (2.4m), 8s period, SSE swell with 661 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 6AM (local time) - 4.5ft (1.3m), 8s period with ESE 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 Tuesday (Sep 01) at 6AM. The primary swell is predicted to be 1.3m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Barra da Lagoa in the next 16 days are 2.4m 8s and forecast to arrive on Tuesday (Sep 01) 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 1.6m 5s period and expected on Saturday (Sep 05) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 1st Sep) | 4.5ft (1.3m) 8s |
| Best Surf | 12PM (Tue 1st Sep) | 5ft (1.5m) 8s |
| Most Powerful | 9PM (Tue 1st Sep) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Barra da Lagoa over the next 16 days.
The Lowdown
Alright, Rusty here, and I'm looking at the outlook for our local stretch. The next couple of weeks are a bit of a mixed bag, with a long stretch of flat, quiet days in the middle, but there are a couple of windows that could get interesting.
We start off with on Monday afternoon, August 31st, with some rain and a tiny 4ft SE swell, but the wind is messy and the energy is weak (135), so it’s a no-go. The water is sitting at 67°, which is about normal for this time of year.
Things start to look a little better heading into Tuesday morning, September 1st. The swell picks up a touch to 5ft from the ESE, and with a light S wind blowing cross-offshore, the conditions are clean. The energy is still on the low side (245), but it’s surfable. There’s a chance of a thundery shower later in the day, but that morning session is the pick of the early week.
The standout moment really comes on Wednesday morning, September 2nd. We’ve got clean conditions, a light SSW breeze, and a clean 6ft swell from the SE. The energy jumps up to a moderate 427, and the forecast says to expect good surf. This is your best bet for the first week. The size is friendly for most, but keep an eye on the tide.
After that, things go downhill fast. From Thursday the 3rd through to the 8th, we’re looking at a long dead spell. The swell drops away, and for several days, the energy readings are basically zero. It’s a proper flat spell, so don’t bother paddling out.
A tiny pulse tries to show up on the morning of Tuesday, September 8th, with an 3ft cross-onshore wave, but it’s not worth getting excited about.
The real interest comes back in the second week. On Wednesday afternoon, September 9th, the energy jumps back up to a strong 467, with a 4ft SSE swell and an 11-second period. The wind is light cross-shore, but the forecast says it’s marginal. It’s something to watch.
Then, keep an eye on the period from the 13th onwards. By Sunday afternoon, September 13th, we’re looking at a 8ft SSE swell with a massive energy reading of 1186, but the wind is cross-onshore and choppy. That’s a lot of power, but it’ll be messy. On Monday the 14th, the swell drops to 7ft, still with a strong energy of 778, but the wind is still cross-onshore. This is more of a big-wave setup for experienced surfers only.
The best of the late window looks like Tuesday morning, September 15th. A 6ft SE swell, 12-second period, generating 899 energy, and a light NNW cross-shore wind. The forecast says marginal, but with that kind of energy and a clean cross-shore, it could be fun. The SSE wind swing in the afternoon might mess it up, but the morning window is the one to pencil in.
Overall, if you’re picking a single session, go for the Wednesday morning, September 2nd – it’s clean, it’s got a good size, and the energy is well-balanced. For the second week, the Tuesday morning, September 15th is the most promising, but it’s a long way out, so take it with a pinch of salt.
Rusty.
Short Range ForecastHeavy rain (total 39mm), heaviest during Mon afternoon. Very mild (max 19°C on Mon afternoon, min 14°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 31mm), heaviest during Sat morning. Warm (max 20°C on Fri morning, min 15°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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) | SE 7 | ESE 8 | ESE 8 | SE 8 | SE 8 | SE 9 | SE 9 | SE 10 | SE 11 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SSE 14 | SSE 13 | SE 10 | SE 9 | S 8 |
Wave Graph | ||||||||||||||||||||
121 | 162 | 245 | 270 | 645 | 427 | 430 | 478 | 361 | 286 | 187 | 132 | 84 | 35 | 24 | 20 | 35 | 4 | 3 | 0 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross | cross-on | cross | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off |
High Tide | 3:49PM0.75m | 3:58AM0.84m | 4:16PM0.68m | 4:43AM0.76m | 4:43PM0.60m | 5:40AM0.67m | 5:10PM0.52m | 00:11AM0.36m | 11:53AM0.67m | 00:12AM0.40m | 12:28PM0.78m | 00:12AM0.46m | 12:59PM0.85m | 00:02AM0.53m | ||||||
Low Tide | 9:54PM0.27m | 10:59AM0.27m | 9:48PM0.29m | 12:22PM0.39m | 9:33PM0.30m | 9:27AM0.53m | 2:33PM0.47m | 9:35PM0.32m | 9:39PM0.36m | 3:51AM0.28m | 6:22PM0.40m | 5:05AM0.18m | 6:44PM0.36m | |||||||
— | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | |
5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | |
mm | 23 | 13 | 1 | 2 | — | — | — | — | — | — | — | — | — | 9 | 14 | 6 | 2 | — | — | — |
Temp °C | 19 | 19 | 19 | 18 | 17 | 18 | 18 | 16 | 18 | 18 | 17 | 20 | 18 | 16 | 15 | 15 | 15 | 16 | 16 | 14 |
Feels °C | 20 | 21 | 17 | 15 | 14 | 17 | 17 | 15 | 14 | 14 | 15 | 18 | 15 | 13 | 14 | 13 | 12 | 11 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | SE 7 | ESE 8 | ESE 8 | ENE 8 | — | SE 9 | SE 9 | SE 10 | SE 11 | SE 11 | SE 11 | NNE 6 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | ENE 7 |
121 | 162 | 245 | 51 | — | 427 | 430 | 478 | 361 | 286 | 187 | 55 | 130 | 181 | 147 | 122 | 112 | 63 | 63 | 21 | |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ENE 8 | NE 8 | NE 8 | — | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | SE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SSE 13 | S 12 | S 12 | E 8 |
168 | 108 | 67 | 57 | — | 189 | 153 | 116 | 90 | 61 | 58 | 132 | 84 | 35 | 24 | 14 | 35 | 26 | 24 | 21 | |
Swell 3 Height (m) Direction Period (s) | ESE 8 | — | — | — | — | — | — | — | — | S 11 | S 10 | ENE 8 | — | S 9 | S 9 | SSE 14 | SE 9 | SE 10 | SE 9 | — |
14 | — | — | — | — | — | — | — | — | 3 | 2 | 55 | — | 2 | 2 | 20 | 14 | 4 | 3 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 8 | SE 8 | — | — | — | NNW 4 | NNE 4 | N 5 | — | S 3 | S 5 | S 5 | SSE 5 | S 5 | S 5 | S 5 | S 8 |
— | — | — | 270 | 645 | — | — | — | 10 | 40 | 54 | — | 7 | 28 | 27 | 56 | 73 | 104 | 71 | 334 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 3 | 3 | 0 | 38 | 17 | 0 | 21 | 3 | 3 | 67 | 3 | 0 | 21 | 21 | 13 | 21 | 21 | 38 | 89 | 21 |
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.











