Surf Forecasts:
Barra da Lagoa surf forecast from 9 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 12AM (local time) - 6.5ft (2.0m), 12s period, SSE swell with glassy winds.
- Most powerful swell: Wednesday 12 Aug, 12AM (local time) - 6.5ft (2.0m), 12s period, SSE swell with 1,108 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 12AM (local time) - 6.5ft (2.0m), 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 Wednesday (Aug 12) at 12AM. The primary swell is predicted to be 2.0m and 12s 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 2.0m 12s and forecast to arrive on Wednesday (Aug 12) at 12AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 9s period and expected on Sunday (Aug 09) at 3PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 12th Aug) | 6.5ft (2.0m) 12s |
| Best Surf | 12AM (Wed 12th Aug) | 6.5ft (2.0m) 12s |
| Most Powerful | 12AM (Wed 12th Aug) | 6.5ft (2.0m) 12s |
Table - best surf conditions forecast for Barra da Lagoa over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s break down the next couple of weeks. It’s a bit of a tale of two forecasts: a solid, clean window mid-week, followed by a long, flat stretch that’ll test your patience.
The action starts Wednesday morning, the 12th. A new SSE swell fills in with waves around 6ft, and the period is a solid 12 seconds. The energy is strong, and the wind is forecast to be glassy. That’s the recipe for a great session. This is the standout window, so if you can get out early, you’ll find some clean, well-ordered waves at Barra da Lagoa. The water temp is 65.8°, which is about average for this time of year.
The afternoon gets a bit bumpy as the wind swings north, but the swell holds around 5.6ft. Thursday morning has some cross-shore wind, but the swell is still there at 5.2ft with a longer 14-second period. The real gem is Thursday afternoon. The wind goes glassy again, and you’ve got 5.6ft of clean, long-period groundswell. That longer period means more power and better shape. This is another one to circle on the calendar.
Friday morning the swell drops off a cliff, down to 1ft. It’s a quick fade. The afternoon kicks back up to 4.9ft, but it’s a bit junky with cross-shore wind. Saturday sees a new pulse of 5.6ft in the morning with a light cross-offshore wind, which is a good option. The energy is a bit weaker, but it’s still rideable. The afternoon backs off to 4.3ft with a shorter period, so it loses some drive.
Then comes the long, flat spell. Sunday the 16th has some junky, cross-onshore 6ft waves, but it’s not worth the paddle out. From Monday the 17th through to Saturday the 22nd, we’re looking at tiny, weak surf—mostly under 1.3ft. There’s no power, no push, nothing. It’s a proper dead period. The wind is all over the place, but the lack of swell is the real story. The last day of the window, Sunday the 23rd, has a small, short-period NE bump that’s not going to offer anything of note.
So, the game plan is simple: make the most of Wednesday morning and Thursday afternoon. Those are your clean, powerful windows. After that, it’s a long wait for the ocean to come back to life.
Short Range ForecastModerate rain (total 10mm), heaviest on Sun afternoon. Very mild (max 14°C on Sun morning, min 11°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Fri afternoon. Warm (max 20°C on Thu afternoon, min 13°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 | S 9 | S 11 | S 12 | S 12 | S 12 | S 12 | S 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 14 | SSE 13 | S 13 | SSE 16 | SSE 14 | SE 8 | SSE 12 | SE 9 | SE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1108 | 887 | 780 | 636 | 1002 | 989 | 0 | 52 | 769 | 86 | 723 | 281 | 343 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | glassy | glassy | cross | cross | cross | glassy | cross | cross-off | cross | glassy | cross-off | cross-off | glassy |
High Tide | 1:31PM0.88m | 00:26AM0.58m | 2:02PM0.91m | 00:47AM0.66m | 2:26PM0.90m | 1:13AM0.74m | 2:44PM0.86m | 1:42AM0.81m | 3:01PM0.81m | 2:13AM0.86m | 3:17PM0.77m | 2:46AM0.88m | 3:35PM0.73m | ||||||||
Low Tide | 7:35PM0.32m | 7:01AM0.03m | 8:09PM0.33m | 7:44AM-0.04m | 8:38PM0.35m | 8:24AM-0.06m | 9:03PM0.38m | 8:59AM-0.05m | 9:21PM0.39m | 9:30AM0.01m | 9:29PM0.38m | 9:56AM0.09m | 9:20PM0.35m | ||||||||
 |  |  | | |  | | | | |  |  | |  |  | | | | | | | |
 | 6:48 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — |
mm | — | 2 | 3 | 1 | — | — | — | 2 | 2 | 2 | — | — | — | 1 | 3 | 3 | 5 | 3 | — | — | — |
Temp °C | 14 | 14 | 11 | 12 | 14 | 13 | 13 | 11 | 13 | 14 | 16 | 16 | 18 | 20 | 19 | 19 | 19 | 19 | 18 | 19 | 18 |
Feels °C | 9 | 9 | 7 | 8 | 9 | 9 | 11 | 10 | 13 | 13 | 15 | 15 | 19 | 21 | 21 | 20 | 20 | 21 | 19 | 21 | 20 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | ENE 7 | S 11 | ENE 8 | ENE 9 | S 12 | S 12 | S 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 14 | SSE 13 | S 13 | SSE 12 | SSE 14 | SSE 12 | SSE 12 | SE 9 | SE 9 |
| kJ | 42 | 42 | 1005 | 33 | 44 | 1313 | 1254 | 956 | 1108 | 887 | 780 | 636 | 1002 | 989 | 752 | 781 | 769 | 519 | 723 | 281 | 343 |
Swell 2 Height (m) Direction Period (s) | E 15 | — | ENE 7 | E 13 | — | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | NE 5 | NE 6 | NE 6 | NE 6 | NE 6 | SSE 8 | SE 8 | ENE 7 | S 11 | SSE 11 |
| kJ | 4 | — | 43 | 3 | — | 38 | 24 | 12 | 11 | 5 | 5 | 26 | 60 | 51 | 40 | 43 | 117 | 86 | 28 | 256 | 191 |
Swell 3 Height (m) Direction Period (s) | — | E 14 | E 14 | — | — | — | — | — | — | — | — | — | — | — | — | SSE 16 | ENE 7 | NE 7 | E 16 | ENE 7 | ENE 7 |
| kJ | — | 4 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | 52 | 40 | 37 | 5 | 36 | 36 |
Wind waves Height (m) Direction Period (s) | S 8 | S 9 | — | S 12 | S 12 | — | — | — | — | — | NE 7 | NE 5 | — | — | — | — | — | — | — | — | — |
| kJ | 756 | 836 | — | 1277 | 1363 | — | — | — | — | — | 7 | 42 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 89 | 13 | 17 | 17 | 13 | 13 | 4 | 0 | 0 | 4 | 4 | 4 | 0 | 4 | 4 | 3 | 0 | 0 | 0 | 0 |
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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