
Surf Forecasts:
Ilha Porchat surf forecast from 2 Sep 2026:
- Best quality surf: Wednesday 2 Sep, 9PM (local time) - 4.5ft (1.4m), 11s period, SSE swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 12PM (local time) - 5ft (1.6m), 10s period, S swell with 541 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 9PM (local time) - 4.5ft (1.4m), 11s period with SSE swell.
Best Forecast Surf Conditions for Ilha Porchat this week:
The surf forecast for Ilha Porchat over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 02) at 9PM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 0.2m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ilha Porchat in the next 16 days are 1.6m 10s and forecast to arrive on Monday (Sep 07) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 6s period and expected on Friday (Sep 04) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Wed 2nd Sep) | 4.5ft (1.4m) 11s |
| Best Surf | 9PM (Wed 2nd Sep) | 4.5ft (1.4m) 11s |
| Most Powerful | 12PM (Mon 7th Sep) | 5ft (1.6m) 10s |
Table - best surf conditions forecast for Ilha Porchat over the next 16 days.
The Lowdown
Alright surfers, Rusty here. Let’s have a look at what’s on the cards for Ilha Porchat over the next couple of weeks.
Right off the bat, I gotta be straight with you: this is a tough stretch. The water is sitting at a warm 71°F, which is a touch warmer than usual for this time of year, but the quality of the surf just isn't cooperating for the most part. We’ve got a long, dry spell of poor conditions ahead before we see anything even close to worthwhile.
The first real chance to get wet without completely hating life looks like Thursday morning, September 3rd. The wind will be glassy and the swell is a clean 4 ft from the SSE with a period of 11 seconds. That’s a proper groundswell, and for a sheltered point like Ilha Porchat, that long period can wrap in nicely. The energy is moderate, sitting at 360. It’s not going to be world-class, but it’s surfable. The afternoon will see the wind shift cross-shore and mess things up, so you’ll want to be on it early.
After that, we slip back into the doldrums. Friday morning, September 4th is glassy again, but the swell drops right off to just 3 ft. You could probably get a few little ones on a log, but it’s ordinary.
Then we hit a nasty run. From Saturday the 5th all the way through to Tuesday the 8th, we’ve got persistent cross-onshore winds and rain. The swell does bump up a bit, hitting 5 ft on Monday the 7th with a big energy reading of 481, but it’s all wind-chop. That’s more of a kite-surfing setup than a paddle-surfing one.
There’s a brief moment of calm on Wednesday afternoon, September 9th. The wind goes glassy again, but the swell is a weak 3 ft from the ESE with a short period of 7 seconds. The energy is low at 144. It’s a tease.
The next proper chance comes on Thursday morning, September 10th. It’s glassy again, with a 3 ft ESE swell. The energy is a bit better at 180, and those conditions are clean. It’s still just ordinary, but it’s the best we’ve got in this window. Later that afternoon the swell jumps to 5 ft with a huge energy of 529, but the wind comes onshore and ruins it.
After that, it’s more of the same: onshore winds, rain, and poor surf. We get a brief moment of glassy conditions on Sunday morning, September 13th, but the swell is barely 1 ft, even if the period is a very long 15 seconds. That’s a tease if I’ve ever had one.
The final kicker comes on Thursday, September 17th. The swell is a modest 4 ft, but the period is a massive 16 seconds from the SSE, and the energy is strong at 699. The problem? The wind is a moderate cross-onshore at 12 to 15 mph and it’s raining. It’s going to be a bumpy, messy mess. That’s another one that would be a dream on a glassy day, but as it stands, it’s a write-off.
The Standout: Honestly, if you had to pick one, it’s Thursday morning, September 3rd. That glassy wind with a solid 4 ft SSE groundswell is the cleanest wave we’re going to see. It’s not pumping, but it’s the only time the stars align for a proper paddle.
So what’s the bottom line? This is a quiet period for Ilha Porchat. Don’t expect much. Keep your eyes on the forecasts, because things can change, but for now, you’re better off waxing the longboard and waiting for a better day.
Stay frothy,
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Wed morning. Warm (max 25°C on Fri morning, min 17°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 50mm), heaviest during Sat night. Warm (max 21°C on Sat morning, min 16°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | S 6 | SE 10 | SSE 6 | SSE 7 | SSE 6 | S 6 | SSE 9 | S 10 | S 11 | SSE 10 | SE 10 | ESE 7 |
Wave Graph | |||||||||||||||||||||
130 | 342 | 431 | 353 | 313 | 193 | 138 | 78 | 42 | 36 | 28 | 92 | 141 | 94 | 52 | 471 | 496 | 326 | 285 | 363 | 162 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | glassy | cross | glassy | glassy | cross-on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | glassy |
High Tide | 5:24PM0.95m | 6:07AM1.00m | 6:00PM0.83m | 7:19AM0.86m | 12:36PM0.81m | 6:48PM0.71m | 1:05PM0.96m | 8:58PM0.64m | 1:29PM1.07m | 00:41AM0.79m | 1:49PM1.15m | 00:53AM0.93m | 2:05PM1.20m | 1:17AM1.08m | |||||||
Low Tide | 11:53AM0.46m | 10:51PM0.37m | 11:09AM0.64m | 1:57PM0.62m | 10:51PM0.44m | 10:17AM0.76m | 4:22PM0.66m | 10:57PM0.53m | 4:10AM0.44m | 6:02PM0.59m | 5:35AM0.31m | 6:52PM0.50m | 6:33AM0.16m | 7:25PM0.43m | 7:18AM0.04m | 7:54PM0.38m | |||||
6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | |
— | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:55 | — | |
mm | 1 | — | — | — | — | — | — | — | 1 | 2 | 3 | 12 | 7 | 5 | 7 | 3 | 2 | 9 | 3 | 3 | 1 |
Temp °C | 20 | 20 | 19 | 21 | 22 | 21 | 25 | 22 | 19 | 21 | 20 | 19 | 18 | 17 | 17 | 16 | 16 | 17 | 18 | 19 | 18 |
Feels °C | 21 | 19 | 19 | 20 | 22 | 22 | 25 | 21 | 21 | 23 | 20 | 18 | 18 | 16 | 15 | 15 | 16 | 15 | 17 | 20 | 19 |
Swell 1 Height (m) Direction Period (s) | S 8 | SSE 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | S 6 | S 6 | ESE 9 | ESE 8 | S 9 | ESE 6 | SSE 9 | S 10 | S 11 | SSE 10 | SE 10 | S 10 |
130 | 342 | 431 | 353 | 313 | 193 | 138 | 78 | 42 | 36 | 24 | 7 | 11 | 39 | 22 | 471 | 496 | 326 | 285 | 363 | 68 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | ESE 8 | ESE 8 | ESE 8 | — | ESE 6 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | — | S 14 | S 13 | S 8 | ESE 7 | ESE 7 | ESE 7 | S 17 | S 16 | — |
102 | 7 | 7 | 7 | — | 31 | 45 | 50 | 40 | 23 | 14 | — | 16 | 14 | 23 | 10 | 15 | 10 | 6 | 5 | — | |
Swell 3 Height (m) Direction Period (s) | ESE 9 | — | — | — | — | — | S 11 | S 10 | SSW 4 | SE 10 | SE 10 | — | SE 9 | — | S 12 | — | — | — | — | — | — |
16 | — | — | — | — | — | 2 | 2 | 6 | 27 | 28 | — | 3 | — | 11 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | E 4 | ESE 4 | E 6 | — | SSW 3 | — | — | — | SSE 6 | SSE 7 | SSE 6 | S 6 | — | — | E 7 | ESE 4 | ESE 5 | ESE 7 |
— | — | — | 9 | 26 | 102 | — | 3 | — | — | — | 92 | 141 | 94 | 52 | — | — | 10 | 21 | 66 | 162 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 149 | 0 | 0 | 2 | 0 | 0 | 111 | 8 | 9 | 111 | 70 | 70 | 70 | 70 | 70 | 261 | 70 | 2 | 9 | 0 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
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 Ilha Porchat Surf forecast
The above surf forecast table for Ilha Porchat provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ilha Porchat can be found by selecting the local surf guide option on the grey menu. Our Ilha Porchat 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 (Ilha Porchat) 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 Ilha Porchat 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.
Ilha Porchat is 4 km (2 miles) from the city of Praia Grande. If you plan a holiday in São Paulo, look for hotels and other accommodation in Praia Grande. Praia Grande has rooms for a wide range of budgets as well as car hire and transport links.










