
Surf Forecasts:
Ilha surf forecast from 8 Aug 2026:
- Best quality surf: Saturday 8 Aug, 6PM (local time) - 3.5ft (1.1m), 16s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 10 Aug, 12PM (local time) - 6.5ft (2.0m), 13s period, S swell with 1,336 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 6PM (local time) - 3.5ft (1.1m), 16s period with S swell.
Best Forecast Surf Conditions for Ilha this week:
The surf forecast for Ilha over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 08) at 6PM. The primary swell is predicted to be 1.1m and 16s period with a secondary swell of 1.0m and 16s. Another secondary swell of 0.7m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Ilha in the next 16 days are 2.0m 13s and forecast to arrive on Monday (Aug 10) at 12PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 8th Aug) | 3.5ft (1.1m) 16s |
| Best Surf | 6PM (Sat 8th Aug) | 3.5ft (1.1m) 16s |
| Most Powerful | 12PM (Mon 10th Aug) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Ilha over the next 16 days.
The Lowdown
G’day, Rusty here. Gotta be straight with you – this outlook for Ilha is a bit of a mixed bag. We’ve got a solid run of surf coming, but the wind is going to be a pain for most of it. The water’s sitting at 70°, which is a touch warmer than normal for this time of year, so that’s a nice bonus.
The pattern looks like this: the first few days are pretty much a write-off. Saturday the 8th through Tuesday the 11th all have poor surf conditions. Onshore winds and moderate chop, swells around 3ft to 5ft from the south and SSE, but it’s messy. The combined swell energy is moderate (between 238 and 857), but it just doesn’t matter with the wind.
Then things start to look up. Wednesday the 12th morning is the first real highlight. Ilha gets a 4ft south swell (12 seconds) with glassy conditions – a light NNE breeze at 3 mph. It’s not huge, but it’ll be clean and fun for intermediates. Combined swell energy at 457 (moderate). The afternoon gets choppy again, so get in early.
Thursday the 13th morning is another glassy one: a smaller 3ft SSE swell (12 seconds). Again, clean as a whistle. But the real standout of the whole outlook is Friday the 14th morning. We score a 4ft SSE swell (14 seconds) with a light cross-offshore wind from the west at 6 mph. That is a long-period groundswell, which should set up nicely on the reef, offering clean, well-shaped waves. Combined energy is 548 (moderate). That’s the session to aim for. The afternoon gets blown out, so stick to the morning.
Saturday the 15th morning is glassy again with a 4ft south swell (12 seconds) – clean, but nothing special. Sunday the 16th morning has another small glassy window: 3ft SSE swell (11 seconds). After that, from Monday the 17th onward, the swell drops off and the periods get short (7-8 seconds). There are a few clean-ish mornings (Monday 17th with a 4ft ESE swell at 7 seconds, Tuesday 18th with a 3ft ESE at 8 seconds), but the wave quality is ordinary at best. The combined energy drops into the low 100s and even below 100 by Wednesday the 19th. It’s pretty flat from the 20th to the 23rd, with only tiny, weak swells. That’s a long gap of poor surf, so don’t get your hopes up for the second week.
Overall, your best bet is Friday the 14th morning at Ilha. It’s not the biggest swell, but that long-period S/SSE groundswell with cross-offshore wind will give you the cleanest, best-shaped waves of the window. The glassy mornings on the 12th and 13th are decent fallback options for a quiet paddle.
Stay stoked, Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Mon morning. Warm (max 27°C on Sat night, min 17°C on Mon afternoon). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Tue morning. Warm (max 22°C on Thu morning, min 18°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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 10 | S 11 | S 14 | S 14 | S 13 | SSE 12 | SSE 12 | SSE 13 | SSE 13 | S 13 | SSE 13 | S 12 | S 12 | SSE 12 | S 12 | SSE 12 | SSE 12 | SSE 15 | SSE 14 | SSE 14 | SSE 13 |
Wave Graph | |||||||||||||||||||||
202 | 289 | 496 | 372 | 272 | 511 | 514 | 841 | 670 | 564 | 710 | 446 | 432 | 461 | 299 | 236 | 179 | 657 | 471 | 492 | 539 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross | cross-on | on | on | on | cross-on | cross-on | cross-on | cross | glassy | cross-on | cross | glassy | cross-on | glassy | cross-off | cross-on | cross |
High Tide | 1:20PM1.03m | 00:34AM0.76m | 1:54PM1.14m | 1:04AM0.87m | 2:21PM1.21m | 1:32AM0.99m | 2:46PM1.24m | 2:01AM1.11m | 3:08PM1.23m | 2:31AM1.21m | 3:29PM1.20m | 3:02AM1.27m | 3:50PM1.16m | ||||||||
Low Tide | 6:57PM0.46m | 6:42AM0.20m | 7:45PM0.41m | 7:32AM0.07m | 8:23PM0.38m | 8:15AM-0.02m | 8:54PM0.37m | 8:53AM-0.07m | 9:20PM0.37m | 9:28AM-0.07m | 9:43PM0.36m | 9:58AM-0.02m | 10:01PM0.35m | ||||||||
6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | |
— | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | |
mm | — | — | — | 1 | 2 | 4 | 4 | 4 | 4 | 2 | 2 | 1 | — | — | — | — | — | — | — | 1 | 1 |
Temp °C | 23 | 26 | 27 | 20 | 20 | 19 | 19 | 17 | 18 | 18 | 19 | 19 | 19 | 20 | 19 | 22 | 22 | 21 | 20 | 20 | 18 |
Feels °C | 23 | 26 | 28 | 19 | 21 | 19 | 18 | 15 | 16 | 16 | 16 | 17 | 20 | 20 | 20 | 22 | 23 | 21 | 21 | 20 | 18 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 11 | S 14 | S 14 | S 13 | SSE 12 | SSE 12 | ESE 8 | SSE 13 | S 13 | SSE 13 | S 12 | S 12 | SSE 12 | S 12 | SSE 12 | SSE 12 | SSE 15 | SSE 14 | SSE 14 | SSE 13 |
202 | 289 | 496 | 372 | 272 | 511 | 514 | 6 | 670 | 564 | 710 | 446 | 432 | 461 | 299 | 236 | 179 | 657 | 471 | 492 | 539 | |
Swell 2 Height (m) Direction Period (s) | ESE 7 | E 7 | ESE 5 | ESE 5 | ESE 5 | SSE 16 | E 7 | E 8 | — | E 8 | — | ESE 5 | ESE 5 | — | — | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | ESE 7 |
10 | 4 | 19 | 9 | 5 | 52 | 17 | 10 | — | 10 | — | 17 | 25 | — | — | 42 | 28 | 20 | 14 | 18 | 10 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | E 13 | — | — | — | — | — | — | — | — | — | SSE 16 | — | SSE 18 | E 7 | — |
— | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | 137 | — | 63 | 24 | — | |
Wind waves Height (m) Direction Period (s) | E 7 | E 4 | — | SW 3 | S 4 | — | — | SSE 13 | ESE 6 | ESE 5 | — | — | — | ESE 5 | ESE 6 | — | E 6 | — | — | SW 3 | S 5 |
26 | 12 | — | 5 | 14 | — | — | 841 | 50 | 25 | — | — | — | 35 | 69 | — | 49 | — | — | 2 | 22 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 8 | 0 | 96 | 136 | 113 | 57 | 57 | 57 | 15 | 57 | 8 | 0 | 2 | 2 | 0 | 2 | 0 | 0 | 136 | 4 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Ilha Surf forecast
The above surf forecast table for Ilha provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Ilha can be found by selecting the local surf guide option on the grey menu. Our Ilha 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) 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 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.
Are you planning a holiday in São Paulo? If you are looking for accommodation near Ilha, camping, hotels and holiday cottages in São Paulo, consider staying in Praia Grande which is 19 km (12 miles) away. Other places in and around São Paulo where you can find information about places to rent, and car hire include Bertioga which is 19 km (12 miles) away, Guaruja, Cubatao and Santos.











