Surf Forecasts:
Barra da Lagoa surf forecast from 16 Sep 2026:
- Most powerful swell: Friday 18 Sep, 3AM (local time) - 3.5ft (1.1m), 10s period, SSE swell with 260 kJ wave energy.
Best Forecast Surf Conditions for Barra da Lagoa this week:
The most powerful waves expected at Barra da Lagoa in the next 16 days are 1.1m 10s and forecast to arrive on Friday (Sep 18) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 8s period and expected on Sunday (Sep 20) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3AM (Fri 18th Sep) | 3.5ft (1.1m) 10s |
Table - best surf conditions forecast for Barra da Lagoa over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break down the same stretch but in feet and Fahrenheit.
We’re looking at a long, quiet run for Barra da Lagoa. The water temp is about 64°F, which feels a bit cooler than average for this time of year.
From Wednesday the 16th right through to Thursday the 24th, it’s mostly flat. There’s a tiny 1ft bump on the 18th, but it’s all marked as poor. You’ve got a solid 9-day gap with nothing worth paddling out for. Plenty of glassy mornings, but no swell to go with them.
The first real window shows up on Friday morning, the 25th of September. We get a pulse of 6ft from the SSE with a very long 14-second period. That’s a groundswell with some serious energy (1023). The wind is moderate and cross-shore, so not perfect but workable. For a beginner-friendly spot like Barra, 6ft is big, and with that long period, the waves might close out or get shifty on the sandbars. The afternoon turns onshore and choppy, so the morning is your only shot.
After that, it’s slim pickings. A couple of pulses on the 27th (2ft) and 28th (2ft) are still no good. Then on the 1st of October, we get a 5ft windswell from the NE, but with a short 6-second period. The wind is clean and cross-offshore, but the wave is weak and mushy.
The only true standout is Friday the 25th morning. That’s the biggest and most energetic day of the whole outlook. It’s not clean, and it’s not for beginners, but it’s the only real swell on the board.
Rusty.
Short Range ForecastHeavy rain (total 27mm), heaviest during Fri night. Very mild (max 19°C on Fri afternoon, min 14°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 46mm), heaviest during Sat morning. Warm (max 24°C on Mon morning, min 18°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | |||||||||||||||
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) | S 8 | SSE 15 | SE 8 | S 9 | S 11 | ESE 11 | ENE 5 | NE 6 | NE 7 | SSE 13 | SSE 13 | SSE 9 | NE 8 | NE 8 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | S 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 42 | 10 | 0 | 0 | 22 | 28 | 75 | 0 | 17 | 17 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | glassy | glassy | cross-on | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-off | glassy | cross-on | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:46PM0.67m | 4:55AM0.65m | 4:01PM0.62m | 5:54AM0.56m | 12:38PM0.58m | 00:14AM0.34m | 12:08PM0.63m | 12:09PM0.70m | 11:08PM0.53m | 12:22PM0.76m | 11:34PM0.63m | 12:39PM0.81m | 11:59PM0.72m | ||||||||
Low Tide | 9:14AM0.40m | 9:29PM0.20m | 9:12AM0.46m | 9:54PM0.26m | 8:52AM0.51m | 3:16PM0.57m | 10:21PM0.33m | 3:55AM0.29m | 5:45PM0.44m | 4:58AM0.20m | 6:01PM0.37m | 5:43AM0.12m | 6:25PM0.32m | ||||||||
 | |  | | |  |  | |  |  | |  | |  | | |  | | | |  | |
 | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — |
mm | — | — | — | — | — | — | 1 | 2 | 24 | 16 | 18 | 9 | 1 | 2 | — | — | — | — | 3 | 4 | 1 |
Temp °C | 18 | 18 | 16 | 17 | 18 | 18 | 18 | 19 | 18 | 18 | 19 | 19 | 21 | 21 | 20 | 24 | 23 | 22 | 19 | 14 | 14 |
Feels °C | 16 | 14 | 14 | 15 | 15 | 17 | 18 | 18 | 18 | 16 | 18 | 19 | 21 | 21 | 21 | 26 | 25 | 25 | 18 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | S 8 | S 9 | S 10 | S 9 | S 11 | S 10 | S 10 | SSE 10 | SSE 9 | S 9 | S 9 | E 8 | S 13 | S 12 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | ENE 8 |
| kJ | 233 | 269 | 476 | 189 | 291 | 314 | 200 | 154 | 113 | 59 | 40 | 187 | 28 | 25 | 536 | 398 | 333 | 256 | 157 | 137 | 112 |
Swell 2 Height (m) Direction Period (s) | E 7 | E 8 | E 7 | E 8 | E 7 | E 7 | E 10 | ESE 10 | ESE 8 | ESE 8 | SSE 13 | SSE 12 | — | S 12 | S 11 | S 10 | S 9 | S 9 | N 4 | N 5 | E 15 |
| kJ | 39 | 40 | 27 | 18 | 17 | 9 | 31 | 31 | 23 | 14 | 17 | 51 | — | 25 | 9 | 8 | 7 | 6 | 10 | 4 | 5 |
Swell 3 Height (m) Direction Period (s) | S 11 | SSE 15 | SE 8 | SSE 12 | E 11 | ESE 11 | — | — | S 14 | SSE 13 | S 11 | SSE 9 | — | — | — | — | — | S 12 | S 8 | E 13 | E 13 |
| kJ | 64 | 42 | 10 | 48 | 9 | 22 | — | — | 4 | 17 | 2 | 8 | — | — | — | — | — | 3 | 1 | 4 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | ENE 5 | NE 6 | NE 7 | ENE 7 | ENE 7 | NNE 8 | NE 8 | NE 8 | — | — | — | — | SW 2 | S 4 | S 6 |
| kJ | — | — | — | — | — | — | 28 | 75 | 178 | 218 | 251 | 322 | 773 | 663 | — | — | — | — | 2 | 12 | 100 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 21 | 4 | 4 | 21 | 4 | 4 | 7 | 67 | 67 | 67 | 3 | 19 | 56 | 4 | 3 | 4 | 3 | 21 | 76 | 25 |
Best forecast wave conditions in Florianópolis | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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