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Praia dos Castelhanos (Ilha Bela) surfForecast / São Paulo / Brazil
16 Day Weather and Surf, issued 2 pm Wednesday 27 May 2026 -03Forecast update in hr min s Forecast update imminent
Praia dos Castelhanos (Ilha Bela) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Praia dos Castelhanos (Ilha Bela) sea temperature is
23.0° C
(Which is normal for this time of year)Praia dos Castelhanos (Ilha Bela) surf forecast from 27 May 2026:
- Best quality surf: Thursday 28 May, 3AM (local time) - 4ft (1.2m), 9s period, S swell with offshore winds.
- Most powerful swell: Sunday 31 May, 12AM (local time) - 4.5ft (1.3m), 11s period, SSE swell with 419 kJ wave energy.
- Next surfable swell (1★+): Thursday 28 May, 12AM (local time) - 3ft (0.9m), 7s period with S swell.
Best Forecast Surf Conditions for Praia dos Castelhanos (Ilha Bela) this week:
The surf forecast for Praia dos Castelhanos (Ilha Bela) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (May 28) at 12AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.5m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Praia dos Castelhanos (Ilha Bela) in the next 16 days are 1.3m 11s and forecast to arrive on Sunday (May 31) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (May 27) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 28th May) | 3ft (0.9m) 7s |
| Best Surf | 3AM (Thu 28th May) | 4ft (1.2m) 9s |
| Most Powerful | 12AM (Sun 31st May) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for Praia dos Castelhanos (Ilha Bela) over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 21°C on Wed afternoon, min 19°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Mon morning, min 19°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Wed 27 | Thursday 28 | Friday 29 | Saturday 30 | Sunday 31 | Monday 1 | Tuesday 2 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
SSE 11 | S 7 | S 9 | S 9 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SE 9 | SSE 9 | SE 9 | SE 10 | SSE 8 | SSE 8 | |
97 | 74 | 251 | 229 | 119 | 83 | 76 | 48 | 33 | 145 | 419 | 339 | 208 | 220 | 168 | 128 | 106 | 88 | 73 | 104 | 185 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | off | off | cross-off | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | glassy | on | cross | off | cross-off | cross-off | off | cross-off | cross | glassy | |
High Tide | 00:32AM0.89m | 1:03PM1.00m | 00:58AM0.92m | 1:40PM1.04m | 1:25AM0.93m | 2:14PM1.06m | 1:53AM0.94m | 2:47PM1.06m | 2:21AM0.95m | 3:19PM1.05m | 2:51AM0.96m | 3:51PM1.02m | 3:24AM0.97m | ||||||||
Low Tide | 6:35PM0.31m | 6:44AM0.24m | 7:15PM0.31m | 7:19AM0.17m | 7:53PM0.32m | 7:53AM0.12m | 8:29PM0.33m | 8:27AM0.09m | 9:04PM0.36m | 9:02AM0.08m | 9:39PM0.38m | 9:40AM0.09m | 10:15PM0.41m | 10:21AM0.12m | |||||||
 |  | | | |  | |  | | | | | | | | | | |  |  | | |
 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 |
 | 5:22 | — | — | 5:22 | — | — | 5:22 | — | — | 5:21 | — | — | 5:21 | — | — | 5:21 | — | — | 5:21 | — | 5:21 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 2 | |
Temp °C | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 21 | 21 | 20 | 22 | 21 | 20 | 21 | 21 | 20 | 20 |
20 | 19 | 21 | 21 | 22 | 21 | 20 | 19 | 20 | 20 | 19 | 22 | 22 | 21 | 24 | 22 | 22 | 22 | 21 | 19 | 21 | |
Swell 1 Height (m) Direction Period (s) | SSE 11 | S 7 | S 9 | S 9 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SE 9 | SSE 9 | SE 9 | SE 10 | SSE 8 | SSE 8 |
 kJ | 97 | 74 | 251 | 229 | 119 | 83 | 76 | 48 | 33 | 145 | 419 | 339 | 208 | 220 | 168 | 128 | 106 | 88 | 73 | 104 | 185 |
Swell 2 Height (m) Direction Period (s) | SE 6 | S 11 | E 7 | E 7 | SE 7 | SE 13 | SSE 12 | SSE 12 | SSE 9 | SE 12 | E 7 | ESE 7 | SSE 12 | S 10 | S 10 | E 6 | ESE 6 | ESE 6 | S 8 | ESE 6 | SE 9 |
| kJ | 6 | 61 | 4 | 1 | 2 | 7 | 15 | 13 | 17 | 6 | 1 | 42 | 60 | 51 | 90 | 20 | 8 | 7 | 22 | 7 | 39 |
Swell 3 Height (m) Direction Period (s) | E 5 | E 8 | SE 10 | SE 7 | S 14 | S 10 | E 7 | SSE 11 | — | E 7 | — | — | SE 12 | E 6 | E 6 | S 9 | S 9 | S 9 | E 6 | SE 9 | E 6 |
| kJ | 2 | 5 | 4 | 2 | 4 | 17 | 1 | 12 | — | 1 | — | — | 73 | 12 | 19 | 42 | 25 | 24 | 12 | 13 | 7 |
Wind waves Height (m) Direction Period (s) | SW 4 | WSW 3 | WNW 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 3 | — | — |
| kJ | 23 | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 348 | 0 | 0 | 0 | 0 | 0 | 85 | 12 | 12 | 26 | 18 | 0 | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 45 | 0 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Praia dos Castelhanos (Ilha Bela) Surf forecast
The above surf forecast table for Praia dos Castelhanos (Ilha Bela) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Praia dos Castelhanos (Ilha Bela) can be found by selecting the local surf guide option on the grey menu. Our Praia dos Castelhanos (Ilha Bela) 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 (Praia dos Castelhanos (Ilha Bela)) 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 Praia dos Castelhanos (Ilha Bela) 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.
Praia dos Castelhanos (Ilha Bela) is 11 km (7 miles) from the city of Ilhabela. If you plan a holiday in São Paulo, look for hotels and other accommodation in Ilhabela. Ilhabela has rooms for a wide range of budgets as well as car hire and transport links.
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