
Surf Forecasts:
Ilha surf forecast from 17 Oct 2026:
- Best quality surf: Monday 19 Oct, 12AM (local time) - 4.5ft (1.3m), 12s period, S swell with glassy winds.
- Most powerful swell: Monday 19 Oct, 12AM (local time) - 4.5ft (1.3m), 12s period, S swell with 505 kJ wave energy.
- Next surfable swell (1★+): Saturday 17 Oct, 6PM (local time) - 2.5ft (0.8m), 9s period with SE 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 (Oct 17) at 6PM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.7m 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 1.3m 12s and forecast to arrive on Monday (Oct 19) at 12AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sat 17th Oct) | 2.5ft (0.8m) 9s |
| Best Surf | 12AM (Mon 19th Oct) | 4.5ft (1.3m) 12s |
| Most Powerful | 12AM (Mon 19th Oct) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Ilha over the next 16 days.
Short Range ForecastHeavy rain (total 27mm), heaviest during Fri night. Warm (max 21°C on Fri night, min 19°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Wed night. Warm (max 21°C on Wed morning, min 18°C on Tue night). Mainly fresh winds. | ||||||||||||||||||
Saturday 17 | Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | ||||||||||||||
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 8 | SE 8 | SE 9 | SE 9 | S 8 | S 11 | S 12 | S 11 | S 11 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | E 6 |
Wave Graph | |||||||||||||||||||
114 | 95 | 107 | 97 | 68 | 272 | 505 | 403 | 326 | 284 | 281 | 281 | 218 | 220 | 206 | 167 | 164 | 128 | 126 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | cross-on | cross-on | glassy | on | on | cross-on | cross-on | cross-on | cross | glassy | cross-on | cross | cross | cross-on | cross-off |
High Tide | 5:51AM0.87m | 5:21PM0.85m | 7:07AM0.78m | 6:32PM0.77m | 12:08PM0.87m | 9:14PM0.76m | 12:22PM0.97m | 11:33PM0.89m | 12:38PM1.06m | 00:06AM1.02m | 12:56PM1.13m | 00:37AM1.14m | |||||||
Low Tide | 10:49PM0.34m | 10:04AM0.67m | 1:34AM0.45m | 9:30AM0.74m | 3:25PM0.68m | 3:36AM0.42m | 4:42PM0.60m | 4:48AM0.32m | 5:32PM0.49m | 5:40AM0.21m | 6:12PM0.38m | 6:24AM0.11m | 6:49PM0.28m | ||||||
— | 5:30 | — | — | 5:28 | — | — | 5:28 | — | — | 5:26 | — | — | 5:26 | — | — | 5:24 | — | — | |
6:09 | — | 6:09 | — | — | 6:10 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — | |
mm | 23 | 1 | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — | 4 | 2 | — | 1 |
Temp °C | 21 | 20 | 21 | 20 | 20 | 20 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 20 | 21 | 21 | 21 |
Feels °C | 23 | 21 | 23 | 21 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 19 | 18 | 21 | 20 | 18 | 22 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SE 8 | SE 9 | SE 9 | S 8 | S 11 | S 12 | S 11 | S 11 | S 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | ESE 6 |
114 | 95 | 107 | 97 | 68 | 272 | 505 | 403 | 326 | 284 | 281 | 281 | 218 | 220 | 206 | 167 | 164 | 128 | 77 | |
Swell 2 Height (m) Direction Period (s) | — | S 6 | S 7 | S 8 | SE 9 | SE 11 | SE 10 | SE 9 | SE 9 | SE 9 | ESE 8 | ESE 8 | ESE 10 | ESE 9 | — | — | — | — | SSE 10 |
— | 36 | 50 | 44 | 65 | 114 | 61 | 31 | 21 | 12 | 7 | 7 | 10 | 8 | — | — | — | — | 92 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 15 | SE 11 | — | — | — | — | — | — | SE 11 | — | — | — | — | — | — | — |
— | — | — | 4 | 20 | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 3 | — | — | — | — | — | — | — | E 3 | E 4 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | E 6 |
— | — | — | — | 2 | — | — | — | — | — | — | — | 1 | 10 | 30 | 83 | 104 | 97 | 126 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 53 | 4 | 10 | 0 | 4 | 96 | 0 | 8 | 116 | 2 | 2 | 2 | 2 | 0 | 15 | 38 | 2 | 2 | 0 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










