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Ilha surfForecast / São Paulo / Brazil
16 Day Weather and Surf, issued 8 am Monday 18 May 2026 -03Forecast update in hr min s Forecast update imminent
Ilha surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ilha sea temperature is
23.3° C
(Which is slightly warmer than usual)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 Wednesday (May 20) at 6AM. The primary swell is predicted to be 1.4m and 15s period with a secondary swell of 0.7m and 7s. 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 16s and forecast to arrive on Thursday (May 21) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 20th May) | 4.5ft (1.4m) 15s |
| Best Surf | 9PM (Fri 22nd May) | 6.5ft (2.0m) 14s |
| Most Powerful | 6PM (Thu 21st May) | 6.5ft (2.0m) 16s |
Table - best surf conditions forecast for Ilha over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 18mm), heaviest on Mon night. Warm (max 24°C on Mon morning, min 19°C on Mon night). Winds decreasing (fresh winds from the SW on Mon afternoon, calm by Wed night). | Days 4-6 Weather SummaryHeavy rain (total 43mm), heaviest during Sat morning. Warm (max 20°C on Thu morning, min 18°C on Fri night). Winds increasing (calm on Fri night, fresh winds from the ESE by Sat morning). | ||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
S 10 | SSW 10 | SSW 6 | S 8 | SSW 8 | S 16 | S 14 | S 14 | S 13 | SSE 16 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | S 13 | S 12 | SSE 12 | S 12 | S 11 | |
50 | 125 | 123 | 177 | 155 | 991 | 802 | 529 | 427 | 1016 | 1730 | 1576 | 1328 | 1240 | 788 | 746 | 498 | 314 | 236 | 213 | 151 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | cross-on | cross | cross-off | cross | cross | cross | cross | glassy | on | on | cross-on | cross | cross-on | cross | cross-on | cross-on | cross-on | cross | cross-on | cross | |
High Tide | 3:57PM1.21m | 3:28AM0.99m | 4:41PM1.10m | 4:02AM0.98m | 5:27PM0.99m | 4:40AM0.96m | 6:20PM0.88m | 5:27AM0.93m | 7:29PM0.81m | 6:29AM0.88m | 11:55PM0.82m | 7:58AM0.85m | 11:45PM0.84m | ||||||||
Low Tide | 9:48AM0.09m | 10:54PM0.51m | 10:29AM0.12m | 11:42PM0.62m | 11:19AM0.19m | 00:37AM0.70m | 12:30PM0.26m | 9:39PM0.79m | 1:52PM0.32m | 9:26PM0.78m | 3:10PM0.35m | 3:57AM0.66m | 4:17PM0.36m | ||||||||
 |  |  | |  |  | | |  | | |  | | |  |  | | | |  |  | |
 | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — |
 | — | 5:28 | — | — | 5:28 | — | — | 5:27 | — | — | 5:27 | — | — | 5:27 | — | — | 5:25 | — | — | 5:25 | — |
— | 1 | 7 | 1 | — | — | 2 | 1 | 6 | 1 | 1 | 4 | 1 | 2 | 11 | 11 | 3 | 9 | 4 | 1 | — | |
Temp °C | 24 | 22 | 20 | 20 | 19 | 19 | 19 | 20 | 20 | 20 | 19 | 19 | 19 | 20 | 19 | 19 | 20 | 20 | 21 | 21 | 21 |
26 | 20 | 18 | 19 | 18 | 18 | 19 | 20 | 22 | 18 | 19 | 18 | 20 | 21 | 21 | 16 | 18 | 20 | 18 | 17 | 18 | |
Swell 1 Height (m) Direction Period (s) | S 10 | SSE 16 | SSE 14 | S 8 | S 8 | S 16 | S 14 | S 14 | S 13 | SSE 16 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | S 13 | S 12 | SSE 12 | S 12 | S 11 |
 kJ | 50 | 24 | 40 | 177 | 93 | 991 | 802 | 529 | 427 | 1016 | 1730 | 1576 | 1328 | 1240 | 788 | 746 | 498 | 314 | 236 | 213 | 151 |
Swell 2 Height (m) Direction Period (s) | — | — | E 7 | SSE 13 | SE 8 | SE 7 | SE 6 | SE 6 | SE 6 | E 8 | — | — | — | — | E 9 | SE 5 | ESE 7 | ESE 6 | ESE 6 | ESE 7 | ESE 6 |
| kJ | — | — | 1 | 33 | 93 | 57 | 34 | 24 | 18 | 1 | — | — | — | — | 6 | 40 | 76 | 80 | 34 | 38 | 22 |
Swell 3 Height (m) Direction Period (s) | S 16 | E 7 | — | S 21 | SSE 19 | SSW 8 | — | — | — | — | — | — | — | — | — | E 7 | — | — | — | — | E 6 |
| kJ | 5 | 1 | — | 9 | 124 | 127 | — | — | — | — | — | — | — | — | — | 4 | — | — | — | — | 39 |
Wind waves Height (m) Direction Period (s) | WSW 3 | SSW 10 | SSW 6 | SW 8 | SSW 8 | — | — | — | — | SSE 5 | — | — | — | — | SSE 5 | — | — | — | SW 3 | SW 4 | SW 4 |
| kJ | 1 | 125 | 123 | 122 | 155 | — | — | — | — | 31 | — | — | — | — | 58 | — | — | — | 1 | 12 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 174 | 24 | 10 | 12 | 4 | 4 | 4 | 0 | 57 | 8 | 2 | 2 | 2 | 12 | 53 | 57 | 15 | 8 | 57 | 8 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
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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