Surf Forecasts:
Ilha surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 9PM (local time) - 5ft (1.5m), 8s period, E swell with glassy winds.
- Most powerful swell: Monday 24 Aug, 3PM (local time) - 4.5ft (1.3m), 12s period, SSE swell with 494 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 6PM (local time) - 3ft (0.9m), 8s period with ESE 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 Monday (Aug 17) at 6PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.4m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Ilha in the next 16 days are 1.3m 12s and forecast to arrive on Monday (Aug 24) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Thursday (Aug 20) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Mon 17th Aug) | 3ft (0.9m) 8s |
| Best Surf | 9PM (Mon 17th Aug) | 5ft (1.5m) 8s |
| Most Powerful | 3PM (Mon 24th Aug) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Ilha over the next 16 days.
Short Range ForecastMostly dry. Warm (max 28°C on Tue night, min 18°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 27°C on Thu night, min 17°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | E 7 | E 6 | ESE 8 | ESE 8 | S 7 | S 11 | S 10 | S 9 | S 8 | S 12 | SSE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 165 | 100 | 277 | 103 | 73 | 50 | 32 | 31 | 21 | 17 | 26 | 112 | 64 | 49 | 73 | 344 | 230 | 127 | 88 | 101 | 363 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-on | cross | cross-on | cross-off | cross-on | cross | cross | glassy | cross | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 4:55PM1.03m | 5:14AM1.09m | 5:18PM0.97m | 5:53AM0.97m | 5:43PM0.90m | 6:41AM0.84m | 6:13PM0.81m | 8:17AM0.73m | 12:59PM0.78m | 7:09PM0.72m | 1:10PM0.89m | 00:24AM0.73m | 1:28PM0.99m | 00:51AM0.86m | |||||||
Low Tide | 11:06AM0.31m | 10:51PM0.32m | 11:19AM0.43m | 11:14PM0.35m | 11:24AM0.55m | 11:44PM0.41m | 11:01AM0.66m | 2:35AM0.48m | 9:43AM0.73m | 4:48PM0.69m | 4:46AM0.44m | 6:15PM0.60m | 5:58AM0.33m | 6:54PM0.50m | |||||||
 | |  | | | | | |  | | | |  |  |  |  | | | | | | |
 | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | 1 |
Temp °C | 20 | 20 | 22 | 24 | 24 | 28 | 25 | 20 | 19 | 20 | 23 | 27 | 23 | 20 | 20 | 18 | 18 | 17 | 18 | 18 | 18 |
Feels °C | 21 | 22 | 24 | 25 | 24 | 28 | 24 | 20 | 20 | 20 | 24 | 25 | 22 | 18 | 19 | 17 | 16 | 16 | 16 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | S 11 | ESE 5 | ESE 8 | ESE 8 | S 7 | S 11 | S 10 | S 9 | S 8 | SSE 8 | SSE 11 |
| kJ | 165 | 100 | 93 | 103 | 73 | 50 | 32 | 31 | 21 | 17 | 10 | 30 | 64 | 49 | 73 | 344 | 230 | 127 | 88 | 94 | 363 |
Swell 2 Height (m) Direction Period (s) | S 10 | SSE 10 | SSE 10 | SSE 9 | S 9 | S 10 | S 10 | S 10 | — | — | SW 5 | S 10 | S 9 | — | ESE 8 | ESE 8 | ESE 8 | E 7 | SSE 13 | S 12 | E 8 |
| kJ | 55 | 35 | 20 | 9 | 6 | 2 | 2 | 2 | — | — | 1 | 8 | 6 | — | 21 | 13 | 6 | 4 | 35 | 101 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | SE 9 | S 11 | SE 8 | S 14 | S 14 | SE 13 | S 5 | SE 12 | S 7 | S 6 | — | S 14 | — | — | S 15 | E 7 | E 7 | — |
| kJ | — | — | — | 3 | 2 | 3 | 4 | 4 | 7 | 1 | 6 | 1 | 3 | — | 4 | — | — | 5 | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | — | — | E 8 | — | — | — | — | SSW 3 | — | WSW 3 | E 7 | E 6 | SSW 3 | S 5 | — | — | — | — | — | — | E 4 |
| kJ | — | — | 277 | — | — | — | — | 1 | — | 2 | 26 | 112 | 1 | 46 | — | — | — | — | — | — | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 4 | 8 | 2 | 4 | 2 | 0 | 21 | 88 | 30 | 31 | 63 | 0 | 16 | 101 | 96 | 96 | 136 | 2 | 2 | 2 | 2 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Ilha surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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