Surf Forecasts:
Ilha surf forecast from 2 Aug 2026:
- Best quality surf: Tuesday 4 Aug, 9AM (local time) - 1ft (0.3m), 13s period, S swell with glassy winds.
- Most powerful swell: Sunday 9 Aug, 9AM (local time) - 3.5ft (1.1m), 8s period, SSE swell with 151 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 9AM (local time) - 1ft (0.3m), 13s 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 Tuesday (Aug 04) at 9AM. The primary swell is predicted to be 0.3m and 13s period with a secondary swell of 0.4m and 7s. Another secondary swell of 0.3m and 11s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Ilha in the next 16 days are 1.1m 8s and forecast to arrive on Sunday (Aug 09) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Aug 08) at 12PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Tue 4th Aug) | 1ft (0.3m) 13s |
| Best Surf | 9AM (Tue 4th Aug) | 1ft (0.3m) 13s |
| Most Powerful | 9AM (Sun 9th Aug) | 3.5ft (1.1m) 8s |
Table - best surf conditions forecast for Ilha over the next 16 days.
The Lowdown
Alright, let’s talk about what’s on offer around Ilha.
Honestly, the first week and a half is a bit of a write-off. We’ve got a long stretch of small, weak, or messy surf. The first few days are basically flat with poor conditions, typical of a mid-summer lull that’s overstaying its welcome. Things start to get a little more interesting around the 9th, with a push of swell, but the wind is just not cooperating. The 10th and 11th bring in some bigger, cleaner energy, but the wind is howling and the whole setup just looks like a mess. It’s one of those situations where the ocean is full of energy but not for us – probably more interesting for the kite crew than a paddle surfer.
Now, the real standouts don’t show up until the second week. The first one we’ve got to talk about is Thursday the 13th, in the morning. This is the best it’s been in a long time. The wind is glassy, and we’re looking at a solid 3 ft swell from the south with a long period of 12 seconds. That’s real groundswell, the kind that brings shape and power. The combined energy is moderate at 314. It’s not a monster, but after the junk we’ve had, this is a gift. The water is a touch warmer than normal for the time of year, about 69 °F, so it’s comfortable. This is the one to circle. It’s a reef break, so it handles that long period swell well.
Then, on Saturday the 15th in the morning, we get another crack. This is a late call, but it looks promising. Glassy conditions again, with a 4 ft south-southeast swell, period of 11 seconds, and combined energy of 362. That’s a bit of punch behind it. This is a great option for the weekend, and it’s the most consistent swell we’ve seen. The wind is light and offshore, so it will be clean. Keep in mind, this is a long-range call, so it’s a bit less certain, but it’s the best looking weekend surf we’ve got.
The rest of the second week is a mix of cross-onshore winds, smaller swell, and marginal conditions. Don’t expect much on the 16th or 17th.
So, to sum it up: the first half is a blank. The real action is on the morning of the 13th and the morning of the 15th. Those are the times to get wet.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Sun morning, min 18°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 34°C on Fri afternoon, min 21°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 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) | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | SE 11 | S 13 | SSE 12 | S 12 | S 11 | S 11 | S 10 | SSE 10 | ESE 8 | ESE 8 | ESE 7 | ESE 8 | ESE 7 | SSE 9 | SSE 9 | S 5 |
Wave Graph  | |||||||||||||||||||||
 kJ | 37 | 38 | 26 | 16 | 16 | 20 | 31 | 50 | 104 | 93 | 86 | 52 | 33 | 34 | 22 | 18 | 13 | 11 | 17 | 8 | 29 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | on | cross | cross-on | on | cross | glassy | glassy | cross-off | cross | cross-on | cross-off | glassy | on | glassy | off | cross-off | off | off | cross-on | cross |
High Tide | 4:57PM1.16m | 4:58AM1.23m | 5:31PM1.09m | 5:41AM1.14m | 6:09PM0.98m | 6:31AM1.03m | 6:53PM0.86m | 7:40AM0.92m | 7:53PM0.75m | 12:33PM0.88m | 9:48PM0.69m | 1:20PM1.03m | 00:34AM0.76m | ||||||||
Low Tide | 11:13AM0.10m | 11:20PM0.35m | 11:52AM0.21m | 11:55PM0.40m | 12:43PM0.34m | 00:43AM0.45m | 2:10PM0.48m | 2:29AM0.49m | 4:04PM0.55m | 4:16AM0.45m | 5:46PM0.53m | 5:39AM0.34m | 6:57PM0.46m | ||||||||
 | |  |  | | | | | | | |  | | | | | | | | | | |
 | 6:39 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — |
 | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:44 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 24 | 20 | 18 | 19 | 21 | 23 | 21 | 24 | 22 | 21 | 23 | 26 | 24 | 25 | 32 | 34 | 30 | 33 | 20 | 21 |
Feels °C | 28 | 23 | 20 | 19 | 20 | 21 | 22 | 21 | 23 | 21 | 21 | 23 | 25 | 24 | 24 | 31 | 33 | 28 | 30 | 18 | 22 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | S 12 | S 11 | S 11 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 8 | ESE 7 | ESE 5 | ESE 5 | S 5 |
| kJ | 37 | 38 | 26 | 16 | 16 | 15 | 15 | 29 | 104 | 93 | 86 | 34 | 23 | 34 | 22 | 18 | 11 | 11 | 4 | 5 | 29 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | SSW 4 | SSW 5 | SE 11 | SE 11 | SSE 12 | ESE 7 | ESE 7 | ESE 8 | S 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | ESE 4 | SSE 9 | SSE 9 | ESE 7 |
| kJ | 8 | 7 | 2 | 1 | 2 | 20 | 19 | 50 | 30 | 30 | 34 | 52 | 33 | 29 | 16 | 15 | 13 | 3 | 17 | 8 | 9 |
Swell 3 Height (m) Direction Period (s) | SE 9 | S 8 | S 8 | SE 11 | SE 12 | S 14 | S 13 | SE 10 | SE 10 | SE 11 | — | — | S 16 | S 15 | SSE 13 | SSE 12 | SSE 11 | SSE 8 | ESE 7 | E 8 | S 9 |
| kJ | 3 | 1 | 1 | 5 | 6 | 16 | 31 | 17 | 16 | 18 | — | — | 5 | 4 | 17 | 14 | 12 | 6 | 5 | 1 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | SW 4 | — | — | — | — | — | — | — | — | — | — | — | NNW 2 | — | E 4 | N 3 | NW 3 | — |
| kJ | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 9 | 2 | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 63 | 31 | 31 | 64 | 3 | 0 | 0 | 0 | 4 | 30 | 0 | 0 | 2 | 0 | 5 | 21 | 31 | 61 | 297 | 6 |
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.
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