Surf Forecasts:
Praia do Porto surf forecast from 18 Aug 2026:
- Best quality surf: Monday 24 Aug, 3AM (local time) - 10ft (3.0m), 12s period, S swell with offshore winds.
- Most powerful swell: Monday 24 Aug, 3AM (local time) - 10ft (3.0m), 12s period, S swell with 2,725 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 3PM (local time) - 5.5ft (1.7m), 8s period with ENE 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 Tuesday (Aug 18) at 3PM. The primary swell is predicted to be 1.7m and 8s period with a secondary swell of 0.2m and 10s. Another secondary swell of 1.0m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Praia do Porto in the next 16 days are 3.0m 12s and forecast to arrive on Monday (Aug 24) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Aug 19) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Tue 18th Aug) | 5.5ft (1.7m) 8s |
| Best Surf | 3AM (Mon 24th Aug) | 10ft (3.0m) 12s |
| Most Powerful | 3AM (Mon 24th Aug) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Praia do Porto over the next 16 days.
The Lowdown
Alright, gather ‘round. This is Rusty.
We got a slow burn at Praia do Porto. The first couple days are small and weak. Tuesday the 18th has a 7ft NE windswell, but it’s cross-on and short period – nothing special. Water’s 66°, pretty normal for this time.
Wednesday the 19th is even smaller, knee-to-waist high with an offshore breeze but barely any energy. Thursday and Friday look like junk – onshore wind and poor quality. So you’re looking at a few days of nothing worth paddling out for.
Then things wake up on Saturday the 22nd. The morning has a solid 7ft S swell, moderate offshore wind, and wave energy picking up. That’s a good size for a confident surfer, but a bit much for beginners. The real highlight is Sunday the 23rd. Glassy in the morning with a 6ft S groundswell and building energy. The afternoon gets even better – 6ft S swell, clean conditions, and strong energy. That’s excellent, clean surf for experienced folks. The 11-second period means the waves will have better shape and power.
Monday the 24th is the big one. A 10ft S swell with a 13-second period and massive energy. That’s expert-only. Too big for beginners, and even strong surfers need to be on their game. The wind is light offshore in the morning, so it’ll be powerful and clean, but you gotta know what you’re doing. The afternoon is still solid at 8ft.
After that, it drops off fast. Tuesday the 25th is onshore and messy, and then we’re stuck with weak, short-period junk and NE winds for days. There’s a small window on the 1st of September with a 6ft SSW swell and offshore wind, but it’s nothing special. The end of the forecast is more rain and onshore slop.
So, bottom line: Sunday the 23rd and Monday the 24th are your days. Sunday is the best all-rounder for experienced surfers – clean, fun, and manageable. Monday is for the brave. The rest is mostly a skip. And yeah, crowds can pop up here when it’s good, so expect some company.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 33°C on Tue afternoon, min 18°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Fri morning, min 11°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | NE 8 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | S 9 | ENE 7 | ENE 7 | ENE 7 | SSW 7 | S 9 | S 8 | S 8 | S 8 | S 11 | S 11 | S 12 | S 13 | S 12 | S 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 555 | 365 | 280 | 165 | 116 | 81 | 106 | 183 | 40 | 102 | 259 | 732 | 589 | 372 | 381 | 714 | 819 | 1738 | 2508 | 1749 | 1151 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | off | off | cross-off | on | on | on | off | off | cross-off | off | off | cross-off | glassy | glassy | cross-off | off | off | cross-off | glassy |
High Tide | 5:34PM0.49m | 00:07AM0.22m | 6:24AM0.50m | 6:24PM0.45m | 7:19AM0.45m | 12:30PM0.36m | 7:12PM0.42m | 8:18AM0.40m | 1:10PM0.39m | 8:07PM0.39m | 12:21PM0.42m | 10:23PM0.39m | 12:07PM0.46m | 11:27PM0.45m | 12:34PM0.51m | 00:07AM0.52m | |||||
Low Tide | 11:51AM0.24m | 9:43PM0.20m | 9:36AM0.29m | 12:35PM0.29m | 10:01PM0.21m | 9:36AM0.32m | 3:01PM0.32m | 3:13AM0.21m | 4:25PM0.28m | 4:23AM0.16m | 12:13PM0.39m | 5:06AM0.11m | 5:41PM0.20m | 5:48AM0.06m | 6:24PM0.17m | ||||||
 |  |  | | | | | |  | | | | | | | | |  | | | | |
 | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — |
 | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 32 | 33 | 22 | 20 | 20 | 18 | 22 | 22 | 19 | 20 | 19 | 14 | 14 | 13 | 13 | 14 | 14 | 13 | 15 | 14 | 14 |
Feels °C | 31 | 34 | 24 | 20 | 21 | 21 | 20 | 19 | 18 | 17 | 15 | 9 | 10 | 9 | 11 | 12 | 11 | 10 | 12 | 11 | 13 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 9 | NE 5 | ENE 7 | ENE 8 | ENE 8 | S 8 | ENE 9 | S 8 | S 11 | S 11 | ENE 8 | S 13 | S 12 | S 12 |
| kJ | 403 | 365 | 280 | 165 | 116 | 81 | 99 | 71 | 24 | 102 | 120 | 111 | 401 | 71 | 381 | 714 | 575 | 6 | 2508 | 1749 | 1151 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 9 | S 9 | S 9 | S 7 | S 9 | SE 12 | ENE 7 | SSW 8 | — | — | ENE 9 | S 15 | S 13 | ENE 8 | NE 8 | — | ENE 7 | ENE 7 | NE 7 |
| kJ | 8 | 8 | 6 | 2 | 1 | 24 | 106 | 6 | 40 | 19 | — | — | 86 | 17 | 163 | 26 | 16 | — | 5 | 5 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | E 14 | SE 12 | S 7 | S 10 | SE 12 | — | SSW 8 | SSW 4 | — | — | — | S 12 | ENE 9 | — | — | — | — | — | — |
| kJ | — | — | 4 | 6 | 1 | 19 | 6 | — | 22 | 1 | — | — | — | 3 | 50 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NE 8 | N 5 | SW 3 | SSW 3 | SSW 3 | NE 2 | — | ENE 7 | N 4 | SW 4 | SSW 7 | S 9 | S 8 | S 8 | — | — | S 11 | S 12 | — | — | — |
| kJ | 555 | 45 | 1 | 2 | 2 | 1 | — | 183 | 21 | 2 | 259 | 732 | 589 | 372 | — | — | 819 | 1738 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 0 | 0 | 0 | 0 | 2 | 2 | 9 | 0 | 0 | 122 | 0 | 0 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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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