Surf Forecasts:
Praia do Porto surf forecast from 21 Aug 2026:
- Best quality surf: Sunday 23 Aug, 9PM (local time) - 10ft (3.0m), 12s period, S swell with offshore winds.
- Most powerful swell: Monday 24 Aug, 9AM (local time) - 10ft (3.0m), 16s period, S swell with 3,769 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 6PM (local time) - 8ft (2.5m), 9s period with S swell.
Best Forecast Surf Conditions for Praia do Porto this week:
The surf forecast for Praia do Porto over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 6PM. The primary swell is predicted to be 2.5m and 9s period with a secondary swell of 0.6m and 8s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Praia do Porto in the next 16 days are 3.0m 16s and forecast to arrive on Monday (Aug 24) at 9AM. Winds are predicted to be offshore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Fri 21st Aug) | 8ft (2.5m) 9s |
| Best Surf | 9PM (Sun 23rd Aug) | 10ft (3.0m) 12s |
| Most Powerful | 9AM (Mon 24th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Praia do Porto over the next 16 days.
The Lowdown
Alright, Rusty here, talkin’ about Praia do Porto.
First couple of days? Don’t bother. Friday the 21st of August has barely surfable waves, and the afternoon is poor. Save your energy. Everything kicks off Saturday morning, 22nd August.
That Saturday, you’ve got 8ft of south swell, a light offshore wind out of the southwest, and energy’s pumping at (963). This is a beach/jetty break, fairly consistent, and the wind is gonna keep the surface clean as a whistle. 8ft is too big for beginners, but if you’re comfortable out there, this is a solid session.
Sunday the 23rd is a beauty. Morning has 6ft south swell with an offshore breeze and the period hitting 12 seconds. Energy is at (1021), clean, and the waves have shape. By Sunday afternoon the swell jumps to 7ft from the south, period still 12 seconds, and the combined energy shoots to (1407). This is excellent for anyone with a bit of experience under their belt.
Then Monday the 24th morning… this is the standout. 10ft of south swell, 16-second period, combined energy at (3774). That is powerful, deep-water groundswell. The offshore wind is glassy at 5 km/h, so the surface will be perfect. 10ft with a 16-second interval means serious power—this is experts-only territory. It could get a little dumpy at the beach break with that long period, but it’ll be clean. That’s your session if you’ve got the stones.
After that, the wind turns onshore from Tuesday the 25th onward, and it’s poor to marginal for nearly a week. Not worth paddling out.
Sunday the 30th of August morning gives a small reprieve—5ft of east-northeast swell with a light offshore SW wind. Combined energy is (370), weak but clean. Good for a longboard cruise.
Then on the 2nd of September, Wednesday morning, the south swell comes back at about 7ft with an 8-second period and a clean offshore wind. Afternoon that day has 8ft with clean, light winds and energy at (695). That’s a fun way to wrap up the forecast.
Water temp is 19° F, normal for this time of year.
The real highlights here are Sunday the 23rd afternoon and the big Monday the 24th morning. Monday is the one for the brave—10ft, 16-second south groundswell, nearly glassed off. That is going to be an intense, memorable session if you’re ready for it. For the rest of us, Sunday afternoon with 7ft and clean conditions is the call.
Rusty out.
Short Range ForecastMostly dry. Very mild (max 19°C on Fri morning, min 10°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed afternoon. Very mild (max 19°C on Wed afternoon, min 11°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | SSW 7 | S 9 | S 9 | S 9 | S 10 | S 10 | S 12 | S 12 | S 14 | S 16 | S 14 | S 13 | S 13 | S 12 | S 12 | SSE 15 | SSE 13 | SSE 13 | SSE 14 | SSE 14 | SSE 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 186 | 549 | 1198 | 923 | 782 | 661 | 988 | 1392 | 3128 | 3769 | 2814 | 1710 | 1173 | 841 | 615 | 568 | 1028 | 837 | 779 | 700 | 346 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | off | cross-off | glassy | off | cross-off | off | off | cross | cross-on | cross-on | on | cross-on | on | on | on | on | on | cross-on |
High Tide | 1:10PM0.39m | 8:07PM0.39m | 12:21PM0.42m | 10:23PM0.39m | 12:07PM0.46m | 11:27PM0.45m | 12:34PM0.51m | 00:07AM0.52m | 1:15PM0.56m | 00:48AM0.58m | 1:57PM0.61m | 1:34AM0.63m | 2:30PM0.65m | 2:16AM0.67m | |||||||
Low Tide | 9:34AM0.35m | 4:25PM0.28m | 4:23AM0.16m | 12:13PM0.39m | 5:06AM0.11m | 5:41PM0.20m | 5:48AM0.06m | 6:24PM0.17m | 6:33AM0.02m | 7:05PM0.14m | 7:16AM-0.02m | 7:40PM0.12m | 7:51AM-0.04m | 8:09PM0.11m | |||||||
 | |  |  | |  | | | | | | |  | | | |  | | | | | |
 | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — |
 | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — |
Temp °C | 19 | 18 | 14 | 13 | 12 | 11 | 14 | 14 | 12 | 13 | 13 | 12 | 16 | 17 | 14 | 18 | 19 | 18 | 24 | 24 | 19 |
Feels °C | 15 | 13 | 9 | 9 | 7 | 9 | 11 | 10 | 8 | 11 | 11 | 10 | 14 | 13 | 12 | 17 | 18 | 17 | 21 | 21 | 16 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | S 10 | S 12 | S 12 | S 14 | S 16 | S 14 | S 13 | S 13 | S 12 | S 12 | S 11 | SSE 13 | SSE 13 | SSE 14 | SSE 14 | SSE 13 |
| kJ | 54 | 59 | 35 | 40 | 43 | 661 | 988 | 1392 | 3128 | 3769 | 2814 | 1710 | 1173 | 841 | 615 | 410 | 1028 | 837 | 779 | 700 | 346 |
Swell 2 Height (m) Direction Period (s) | E 11 | E 11 | — | — | — | ENE 8 | NE 8 | NE 8 | ENE 7 | ENE 7 | — | — | — | — | SE 16 | SSE 15 | — | — | — | — | — |
| kJ | 2 | 2 | — | — | — | 28 | 16 | 15 | 5 | 5 | — | — | — | — | 127 | 568 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | NE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 7 | S 9 | S 9 | S 9 | S 10 | — | — | — | — | — | — | — | — | NE 4 | NE 4 | NE 4 | NE 5 | ENE 6 | ENE 7 | NE 7 | NE 7 |
| kJ | 186 | 549 | 1198 | 923 | 782 | — | — | — | — | — | — | — | — | 13 | 16 | 15 | 47 | 209 | 218 | 287 | 293 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 97 | 0 | 0 | 13 | 0 | 0 | 0 | 0 | 0 | 13 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 126 | 51 |
Best forecast wave conditions in Santa Catarina - Sul | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Praia do Porto Surf forecast
The above surf forecast table for Praia do Porto provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Praia do Porto can be found by selecting the local surf guide option on the grey menu. Our Praia do Porto 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 (Praia do Porto) 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 Praia do Porto 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.
Praia do Porto is 2 km (1 miles) from Imbituba. If you plan a holiday in Santa Catarina - Sul, look for hotels and other accommodation in Imbituba. Imbituba has rooms for a wide range of budgets as well as car hire and transport links.
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