
Surf Forecasts:
Praia do Porto surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 12AM (local time) - 8ft (2.4m), 9s period, S swell with offshore winds.
- Most powerful swell: Sunday 6 Sep, 3PM (local time) - 8ft (2.5m), 10s period, S swell with 1,401 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 9AM (local time) - 2.5ft (0.7m), 10s period with SE 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 (Sep 04) at 9AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.6m and 6s. 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 2.5m 10s and forecast to arrive on Sunday (Sep 06) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Friday (Sep 04) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Fri 4th Sep) | 2.5ft (0.7m) 10s |
| Best Surf | 12AM (Mon 7th Sep) | 8ft (2.4m) 9s |
| Most Powerful | 3PM (Sun 6th Sep) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Praia do Porto over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for Praia do Porto. The next couple of weeks are a real mixed bag, with a definite peak in the first week and then a promising window further out.
Right now, the start is a bit slow. Friday morning the 4th is small, with 2ft waves from the SE and a period of 10 seconds. The wind is offshore, but the energy is weak (167). It’s surfable, but nothing to write home about. The afternoon picks up just a touch to 3ft, but the wind goes cross-offshore and the period drops to 8 seconds, so it’s still pretty ordinary.
Saturday the 5th is where things start to get interesting. The morning is glassy with light rain, and the swell bumps up to 3ft. The energy jumps to 305 (moderate), and the conditions are clean. The afternoon goes offshore with a bit more size at 4ft and a 9-second period, and the energy is up to 328. This is a solid, fun day for beginner plus surfers.
Now, Sunday the 6th is a standout. The morning brings a 8ft swell from the S, with a stiff 25 km/h offshore wind. The energy is strong at 711, and the waves are clean. This is a big step up. The afternoon gets even bigger at 8ft, with a 10-second period, but the wind goes cross-offshore and the energy is very strong (1414). This is only for experienced surfers – it’s powerful and will be a handful.
Monday the 7th is still pumping in the morning with 6ft, clean offshore wind, and good energy (540). The afternoon, however, is a write-off with cross-onshore wind and poor conditions. Tuesday the 8th is also poor, with onshore or cross-onshore winds all day.
Wednesday the 9th is another highlight. The morning is glassy with a 7ft swell from the NE. The energy is very strong (1107), and the conditions are clean. This is a big, clean swell, great for the more experienced crew. The afternoon gets a bit messy with cross-onshore wind, but the morning is the pick.
Thursday the 10th is a smaller, glassy morning with 4ft, but the wind turns onshore in the afternoon. Friday the 11th and Saturday the 12th are mostly poor, with onshore wind and small, weak swells.
Then we hit a really promising long-range run. Sunday the 13th sees the swell build back to 8ft from the S, with moderate offshore wind. The energy is strong (1150). The afternoon pushes it further with a 10-second period and very strong energy (1335). This is excellent for experienced surfers. Monday the 14th is the biggest of the bunch. The morning has 8ft from the S, a 13-second period, and very strong energy (1863) with offshore wind. The afternoon is similar but with a 14-second period and even more energy (1933). This is a serious groundswell – long period, big energy. It’s only for experts. Tuesday the 15th stays excellent, with 6ft and 5ft swells from the SSE, 13-second periods, and gentle offshore winds. The energy is still very strong (1556 and 1380). This is a fantastic run of clean, powerful waves.
Wednesday the 16th is glassy with 5ft and a 12-second period, still decent energy (983), but it starts to fade. From Thursday the 17th onward, it tails off quickly with onshore wind and small swells. Friday the 18th and Saturday the 19th look poor, with onshore wind and messy conditions.
The best of the entire forecast is the window from Sunday the 13th through Tuesday the 15th. That’s the real deal – big, clean, powerful groundswell with long periods. If you’re an expert, that’s your target. For the average surfer, Saturday the 5th and Wednesday the 9th morning are your best bets.
Stay safe out there.
Rusty
Short Range ForecastModerate rain (total 15mm), heaviest on Sat afternoon. Very mild (max 16°C on Fri morning, min 9°C on Sun night). Winds increasing (calm on Sat morning, fresh winds from the SSW by Sun afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Wed night. Warm (max 23°C on Wed morning, min 11°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | SE 10 | ENE 8 | ENE 8 | S 9 | S 9 | S 8 | S 8 | S 10 | S 9 | S 10 | S 10 | SSE 10 | S 10 | SSE 9 | ENE 8 | NE 8 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph | |||||||||||||||||||||
106 | 71 | 128 | 134 | 189 | 298 | 665 | 1401 | 921 | 529 | 405 | 502 | 273 | 185 | 310 | 571 | 418 | 264 | 201 | 187 | 206 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | off | glassy | off | off | off | cross-off | off | off | cross-on | cross-on | cross-on | on | cross-on | glassy | cross-on | off | glassy | cross-on | on |
High Tide | 12:17PM0.43m | 7:27PM0.37m | 12:47PM0.49m | 8:40PM0.35m | 1:23PM0.54m | 11:15PM0.41m | 1:51PM0.57m | 11:51PM0.48m | 2:05PM0.60m | 00:29AM0.55m | 2:15PM0.61m | 1:13AM0.61m | 2:30PM0.62m | 1:59AM0.66m | |||||||
Low Tide | 9:17AM0.38m | 4:12PM0.30m | 3:47AM0.18m | 4:57PM0.26m | 4:40AM0.10m | 5:35PM0.23m | 5:24AM0.03m | 6:13PM0.20m | 6:09AM-0.02m | 6:53PM0.17m | 6:56AM-0.05m | 7:27PM0.15m | 7:37AM-0.06m | 7:56PM0.12m | |||||||
6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | |
— | 6:01 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | |
mm | — | — | 7 | 2 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 11 |
Temp °C | 16 | 16 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 19 | 20 | 17 | 23 | 22 | 18 | 20 | 20 | 19 |
Feels °C | 14 | 14 | 13 | 14 | 12 | 10 | 6 | 6 | 8 | 10 | 10 | 12 | 17 | 17 | 16 | 22 | 22 | 18 | 20 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | SE 10 | ENE 8 | ENE 8 | ENE 8 | S 9 | ENE 8 | E 8 | ENE 8 | S 9 | S 10 | S 10 | SSE 10 | S 10 | SSE 9 | ENE 8 | ENE 8 | SSE 12 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
106 | 71 | 128 | 134 | 189 | 68 | 32 | 13 | 686 | 529 | 405 | 502 | 273 | 185 | 310 | 422 | 228 | 264 | 201 | 187 | 206 | |
Swell 2 Height (m) Direction Period (s) | NE 6 | SE 10 | S 6 | S 9 | ENE 8 | SE 10 | E 9 | — | E 8 | E 8 | E 8 | E 8 | ENE 8 | S 16 | SSE 9 | S 11 | — | S 11 | S 10 | S 11 | S 10 |
22 | 63 | 41 | 134 | 99 | 16 | 14 | — | 12 | 11 | 11 | 5 | 11 | 5 | 110 | 85 | — | 143 | 65 | 114 | 52 | |
Swell 3 Height (m) Direction Period (s) | ENE 8 | S 8 | SE 10 | SE 10 | SE 11 | S 14 | — | — | — | — | — | ENE 8 | S 16 | S 16 | S 14 | SSE 9 | — | — | S 12 | E 14 | ESE 14 |
39 | 1 | 63 | 37 | 40 | 15 | — | — | — | — | — | 7 | 5 | 5 | 16 | 29 | — | — | 72 | 4 | 20 | |
Wind waves Height (m) Direction Period (s) | S 4 | S 5 | — | — | SSW 2 | S 8 | S 8 | S 10 | S 9 | — | — | NE 4 | E 5 | ENE 6 | — | NE 8 | NE 8 | — | SW 3 | — | — |
26 | 33 | — | — | 1 | 298 | 665 | 1401 | 921 | — | — | 21 | 47 | 146 | — | 571 | 418 | — | 2 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1479 | 0 | 0 | 2 | 2 | 2 | 2 | 2 | 0 | 2 | 0 | 0 | 2 | 2 |
Best forecast wave conditions in Santa Catarina - Sul | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










