
Surf Forecasts:
Itaipu surf forecast from 4 Aug 2026:
- Best quality surf: Saturday 8 Aug, 6PM (local time) - 4ft (1.2m), 13s period, SSE swell with glassy winds.
- Most powerful swell: Tuesday 11 Aug, 3AM (local time) - 6ft (1.9m), 12s period, SSE swell with 1,002 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 6PM (local time) - 1.5ft (0.5m), 12s period with S swell.
Best Forecast Surf Conditions for Itaipu this week:
The surf forecast for Itaipu over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 04) at 6PM. The primary swell is predicted to be 0.5m and 12s period with a secondary swell of 0.5m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Itaipu in the next 16 days are 1.9m 12s and forecast to arrive on Tuesday (Aug 11) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Aug 07) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 4th Aug) | 1.5ft (0.5m) 12s |
| Best Surf | 6PM (Sat 8th Aug) | 4ft (1.2m) 13s |
| Most Powerful | 3AM (Tue 11th Aug) | 6ft (1.9m) 12s |
Table - best surf conditions forecast for Itaipu over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let’s be straight with you: the next couple of weeks are looking pretty average for Itaipu. There’s surf on the charts, but it’s mostly going to be a case of small, jumbled, and wind-affected waves. We’ve got a long stretch of nothing worth getting excited about, but a couple of windows do open up if you’re patient.
The water is sitting at 69°, which is right around the normal mark for this time of year, so no surprises there.
The week starts off flat and messy. Tuesday morning you might see a tiny 1ft S swell, but with the weak energy (64) and poor conditions, it’s not worth paddling out for. The next few days are more of the same: small, short-period leftovers and onshore breezes messing things up. We’re looking at a real dry spell from Tuesday through to Friday of the first week, with nothing but minuscule, weak surf. Don’t bother getting your hopes up.
Finally, on Saturday the 8th, things start to stir a little. The morning brings a cleaner 3ft S swell (357 energy) with glassy conditions, and it’s surfable but nothing special. The afternoon, though, sees a jump in size to 5ft from the SSE, and the energy climbs to 1210, but the wind turns onshore and it gets messy. It’s a tease, really.
Sunday the 9th keeps that 3ft S swell with a clean morning, but it’s still pretty ordinary. Then we slip back into another run of poor surf, with onshore winds and lumpy conditions from Monday the 10th through to Wednesday the 12th. This is a rough patch, folks. The swell stays small, the wind is messy, and the wave quality is poor. Not a good look.
Thursday the 13th is a bit all over the place, with a short-period ESE swell in the morning that’s not going to offer anything clean.
Now, here’s the standout. Friday the 14th. The morning is where it’s at. We’ve got a 5ft SSE groundswell, with a period of 14 seconds, and the energy is strong at 1006. The wind is glassy, and the report says to expect very good surf conditions. This is the one to circle on the calendar. It’s not huge, but it’s clean, has some push, and will be the best wave quality we’ve seen in this whole window. It’s a long-period swell, so keep in mind that Itaipu, being a sheltered spot, might see it a bit more lined up than a beach break. Make the most of the morning, because the afternoon gets windier and more onshore.
After that high point, the weekend and the start of the next week fade back into the ordinary. Saturday the 15th and Sunday the 16th have small, weak swells with cross-shore winds. The following week, from the 17th to the 18th, looks pretty poor – small, short-period, and choppy. Not worth the effort.
Hang on, one more glimmer. On Wednesday the 19th, there’s a bigger SSW swell pushing in, 6ft in the morning with glassy conditions. The energy is solid at 666, and the report says to expect good surf. This is a bigger, more powerful swell, but the period is a bit shorter at 10 seconds, so it might not be as clean as the 14th. Still, it’s the biggest surf of the period and could be a fun one for the more experienced crew. The afternoon sees it jump to 7ft, but the wind turns cross-onshore, so it’ll get lumpy.
So, bottom line: the next 16 days are mostly a waiting game. The standout is definitely Friday morning the 14th – clean, glassy, and with a decent groundswell. The 19th is the other one to watch, but it’s a bit less certain. Everything else is pretty much a write-off. Get out there on the 14th and make it count.
Rusty
Short Range ForecastMostly dry. Warm (max 31°C on Thu morning, min 22°C on Tue afternoon). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Fri night. Warm (max 27°C on Sat night, min 19°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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) | SSE 12 | S 12 | S 11 | S 11 | S 10 | SSE 10 | ESE 8 | E 8 | ESE 7 | ESE 8 | ESE 7 | S 12 | SSE 14 | SSE 12 | S 13 | S 12 | S 7 | SSE 11 | SSE 11 | S 13 |
Wave Graph | ||||||||||||||||||||
50 | 104 | 91 | 86 | 53 | 33 | 35 | 42 | 18 | 19 | 18 | 368 | 571 | 313 | 427 | 319 | 195 | 394 | 401 | 386 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-off | glassy | cross-on | cross-off | cross-off | glassy | glassy | cross-on | cross-on | off | glassy | on | glassy | cross-on | cross-on | cross-on | on | cross-on | on |
High Tide | 6:10PM0.99m | 6:31AM1.03m | 6:54PM0.87m | 7:40AM0.92m | 7:53PM0.75m | 12:34PM0.88m | 9:47PM0.69m | 1:21PM1.03m | 00:34AM0.76m | 1:54PM1.14m | 1:04AM0.87m | 2:22PM1.21m | 1:32AM0.99m | |||||||
Low Tide | 00:44AM0.45m | 2:10PM0.48m | 2:30AM0.48m | 4:04PM0.55m | 4:16AM0.45m | 5:46PM0.53m | 5:40AM0.34m | 6:57PM0.46m | 6:42AM0.20m | 7:45PM0.41m | 7:32AM0.07m | 8:23PM0.38m | ||||||||
— | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | |
5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | 1 | 6 | 3 | 4 | 8 |
Temp °C | 23 | 24 | 26 | 23 | 25 | 31 | 30 | 27 | 25 | 23 | 20 | 24 | 24 | 27 | 21 | 20 | 19 | 19 | 19 | 19 |
Feels °C | 23 | 23 | 25 | 23 | 24 | 31 | 30 | 27 | 23 | 23 | 23 | 25 | 26 | 28 | 23 | 22 | 20 | 20 | 19 | 20 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | S 12 | S 11 | S 11 | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 7 | ESE 8 | ESE 7 | S 12 | SSE 14 | SSE 12 | S 13 | S 12 | SSE 6 | SSE 11 | SSE 11 | S 13 |
25 | 104 | 91 | 86 | 34 | 33 | 35 | 42 | 18 | 19 | 18 | 368 | 571 | 313 | 427 | 319 | 64 | 394 | 401 | 386 | |
Swell 2 Height (m) Direction Period (s) | SSE 12 | ESE 7 | ESE 7 | ESE 7 | S 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 11 | SSE 10 | SSE 5 | ESE 8 | SSE 15 | ESE 5 | ESE 5 | SSE 12 | ESE 8 | ESE 8 | ESE 6 |
50 | 27 | 16 | 30 | 53 | 33 | 29 | 16 | 8 | 12 | 10 | 16 | 6 | 186 | 9 | 5 | 195 | 7 | 6 | 22 | |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | ESE 9 | — | — | S 16 | SE 15 | SSE 13 | SSE 12 | SSE 8 | — | ESE 7 | E 8 | E 7 | — | — | ESE 8 | — | E 13 | E 8 |
17 | 15 | 8 | — | — | 5 | 8 | 17 | 14 | 7 | — | 5 | 29 | 9 | — | — | 13 | — | 3 | 5 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | WSW 3 | — | N 2 | NNW 3 | SW 3 | — | — | E 8 | — | — | SSW 4 | S 7 | — | SE 6 | — |
— | — | — | — | — | 1 | — | 1 | 4 | 5 | — | — | 10 | — | — | 8 | 173 | — | 28 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 10 | 0 | 0 | 12 | 7 | 7 | 7 | 7 | 27 | 33 | 14 | 0 | 25 | 0 | 12 | 68 | 152 | 73 | 73 | 190 |
Best forecast wave conditions in São Paulo | ||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||
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Information about the Itaipu Surf forecast
The above surf forecast table for Itaipu provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Itaipu can be found by selecting the local surf guide option on the grey menu. Our Itaipu 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 (Itaipu) 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 Itaipu 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.
Itaipu is 2 km (1 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.











