Surf Forecasts:
Ilha surf forecast from 24 Jul 2026:
- Best quality surf: Sunday 26 Jul, 3AM (local time) - 3ft (0.9m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Friday 24 Jul, 6PM (local time) - 3.5ft (1.1m), 9s period, S swell with 212 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 9PM (local time) - 3.5ft (1.0m), 9s 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 Friday (Jul 24) at 9PM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.2m and 8s. 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 9s and forecast to arrive on Friday (Jul 24) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Wednesday (Jul 29) at 12PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Fri 24th Jul) | 3.5ft (1.0m) 9s |
| Best Surf | 3AM (Sun 26th Jul) | 3ft (0.9m) 9s |
| Most Powerful | 6PM (Fri 24th Jul) | 3.5ft (1.1m) 9s |
Table - best surf conditions forecast for Ilha over the next 16 days.
The Lowdown
Alright Rusty again, I’ll give it to you in feet and miles per hour now.
Right now and for the rest of this week, it’s pretty bleak. We’ve got a few small pulses of swell but the wind is mostly cross or cross-on, keeping things messy. The water temp is about 69°, which is pretty standard for this time of year, so nothing unusual there.
The first real chance of anything decent is on the morning of Sunday the 26th. The wind goes glassy with an ENE breeze at just 3 mph, and there’s a long-period groundswell from the south at 2 ft but with a period of 14 seconds. The combined swell energy is 242, so moderate energy heading in. It’s a clean, glassy window, but the swell is tiny. For a reef break like Ilha, that long period could mean better-shaped but very small waves. This is the first glimmer of hope.
After that, we drop back into ordinary or poor conditions right through the end of July and into early August. There’s a long gap with nothing worth writing home about – just tiny swell, cross-shore breezes, and very little energy.
The standout in this whole outlook lands on Monday morning, August 3rd. We’ve got a clean, light cross-off wind from the west at 3 mph, with a 2 ft southerly groundswell running at 14 seconds. The combined energy reads 207 – moderate – and the conditions are clean. It’s not big, but for a reef setup with that kind of period, you can expect some nicely shaped, lined-up waves. The wind is light and off the land, so it’ll be glassy and user-friendly. This is easily the best session on offer.
The second notable window is the following Saturday morning, August 8th. The swell bumps up to 3 ft from the south, period at 8 seconds, combined energy at 215, and the wind goes glassy with an easterly breeze at just 3 mph. Expect clean, surfable waves again – a solid finisher to an otherwise patchy run.
Overall, if you can wait, the 3rd and the 8th of August are your best bets. The rest is mostly small, windy, or flat. Ilha is a fairly consistent reef, but it’s really gonna take those clean, glassy windows to shine.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri afternoon. Warm (max 22°C on Mon morning, min 18°C on Fri afternoon). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Thu morning. Warm (max 30°C on Tue morning, min 19°C on Thu morning). Wind will be generally light. | |||||||||||||||||||
Fri 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | ||||||||||||||
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 9 | S 9 | SSE 9 | SSE 9 | SSE 9 | S 14 | S 13 | S 12 | SE 8 | SE 8 | S 12 | ESE 8 | ESE 7 | ESE 8 | S 12 | S 11 | ESE 7 | S 10 | S 10 | ESE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 198 | 176 | 153 | 149 | 130 | 142 | 123 | 104 | 54 | 42 | 47 | 40 | 47 | 51 | 24 | 23 | 30 | 18 | 17 | 10 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross | cross-on | glassy | glassy | cross-on | glassy | cross | cross-on | glassy | cross-off | cross | cross-off | glassy | cross-on | cross-off | cross-off | cross-on | cross |
High Tide | 11:46PM0.76m | 1:28PM0.98m | 00:45AM0.84m | 1:56PM1.06m | 1:21AM0.93m | 2:21PM1.12m | 1:49AM1.03m | 2:44PM1.16m | 2:16AM1.12m | 3:07PM1.20m | 2:44AM1.20m | 3:31PM1.21m | ||||||||
Low Tide | 6:14PM0.57m | 6:10AM0.32m | 7:07PM0.50m | 7:01AM0.22m | 7:45PM0.43m | 7:43AM0.13m | 8:18PM0.37m | 8:20AM0.06m | 8:49PM0.33m | 8:56AM0.01m | 9:18PM0.31m | 9:30AM-0.02m | 9:48PM0.29m | |||||||
 |  |  |  |  | | |  | | | | | | | | |  |  | | | |
 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — |
 | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — |
mm | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 13 | 2 | 1 |
Temp °C | 18 | 18 | 19 | 19 | 18 | 19 | 19 | 20 | 22 | 22 | 24 | 30 | 27 | 29 | 29 | 21 | 24 | 22 | 21 | 19 |
Feels °C | 18 | 20 | 20 | 19 | 20 | 19 | 19 | 22 | 22 | 23 | 24 | 29 | 26 | 29 | 28 | 22 | 25 | 21 | 22 | 19 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SE 9 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 7 | ESE 8 | ESE 6 | ESE 7 | ESE 7 | ESE 6 | S 10 | SSW 4 |
| kJ | 198 | 176 | 153 | 149 | 130 | 99 | 75 | 66 | 54 | 42 | 32 | 40 | 47 | 51 | 12 | 15 | 30 | 13 | 17 | 6 |
Swell 2 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SSE 13 | S 14 | S 13 | S 12 | SSE 11 | S 11 | S 12 | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 10 | ESE 6 | ESE 7 |
| kJ | 6 | 6 | 6 | 6 | 35 | 142 | 123 | 104 | 43 | 20 | 47 | 24 | 24 | 26 | 24 | 23 | 21 | 18 | 8 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | S 10 | S 15 | E 8 | E 7 | E 7 | E 7 | S 15 | SSE 13 | ESE 4 | S 15 | — | E 7 | SE 8 | SE 8 | ESE 8 | SE 8 | SE 8 | S 9 |
| kJ | — | — | 8 | 5 | 4 | 1 | 4 | 1 | 4 | 17 | 6 | 4 | — | 4 | 9 | 9 | 6 | 2 | 3 | 6 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | E 4 | — | ESE 4 | E 5 | — | — | — | — | — | — | SW 3 | SSW 4 | — |
| kJ | — | — | — | — | — | — | — | 10 | — | 4 | 10 | — | — | — | — | — | — | 4 | 6 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 4 | 0 | 4 | 96 | 0 | 0 | 2 | 0 | 2 | 2 | 0 | 0 | 2 | 0 | 5 | 86 | 0 | 21 | 30 | 53 |
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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