Surf Forecasts:
Praia dos Castelhanos (Ilha Bela) surf forecast from 12 Jun 2026:
- Best quality surf: Saturday 13 Jun, 12AM (local time) - 1.5ft (0.5m), 9s period, SE swell with cross-offshore winds.
- Most powerful swell: Thursday 18 Jun, 6AM (local time) - 4ft (1.2m), 15s period, SSE swell with 666 kJ wave energy.
- Next surfable swell (1★+): Saturday 13 Jun, 12AM (local time) - 1.5ft (0.5m), 9s period with SE 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 Saturday (Jun 13) at 12AM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.4m and 4s. Another secondary swell of 0.3m and 3s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Praia dos Castelhanos (Ilha Bela) in the next 16 days are 1.2m 15s and forecast to arrive on Thursday (Jun 18) at 6AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Jun 13) at 3PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sat 13th Jun) | 1.5ft (0.5m) 9s |
| Best Surf | 12AM (Sat 13th Jun) | 1.5ft (0.5m) 9s |
| Most Powerful | 6AM (Thu 18th Jun) | 4ft (1.2m) 15s |
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 ForecastHeavy rain (total 23mm), heaviest during Sun night. Warm (max 23°C on Fri morning, min 19°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 47mm), heaviest during Mon night. Warm (max 20°C on Mon morning, min 18°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||
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) | SSE 10 | SSE 9 | SE 9 | SE 9 | ESE 9 | S 11 | S 11 | S 10 | S 9 | S 8 | S 8 | S 12 | SSE 9 | SSE 10 | S 12 | SSE 13 | S 13 | S 12 | SSE 14 | SSE 14 | SSE 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 86 | 58 | 36 | 55 | 55 | 58 | 284 | 198 | 106 | 89 | 33 | 80 | 137 | 222 | 139 | 299 | 334 | 224 | 631 | 596 | 613 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross-off | cross-off | glassy | cross-on | on | cross | cross-off | cross-off | cross-on | cross-on | cross-on | on | on | on | on | on | on | cross-on |
High Tide | 1:05PM1.07m | 1:06AM0.87m | 1:55PM1.13m | 1:37AM0.87m | 2:42PM1.15m | 2:08AM0.88m | 3:26PM1.13m | 2:39AM0.91m | 4:07PM1.08m | 3:13AM0.94m | 4:45PM1.00m | 3:49AM0.97m | 5:22PM0.92m | ||||||||
Low Tide | 7:34PM0.25m | 7:32AM0.13m | 8:27PM0.28m | 8:17AM0.06m | 9:16PM0.34m | 9:02AM0.02m | 10:00PM0.41m | 9:47AM0.01m | 10:39PM0.48m | 10:32AM0.03m | 11:15PM0.54m | 11:19AM0.08m | 11:50PM0.57m | ||||||||
 |  |  | | |  | |  |  | |  |  | | | | | | | | |  | |
 | 6:39 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — |
 | — | 5:21 | — | — | 5:21 | — | — | 5:21 | — | — | 5:21 | — | — | 5:21 | — | — | 5:22 | — | — | 5:22 | — |
mm | — | 1 | 1 | — | — | — | — | 2 | 19 | 5 | 5 | 15 | 4 | 5 | 4 | 4 | 1 | 4 | 2 | — | — |
Temp °C | 23 | 22 | 23 | 23 | 21 | 19 | 21 | 21 | 20 | 20 | 19 | 20 | 19 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 20 |
Feels °C | 23 | 24 | 24 | 21 | 19 | 19 | 21 | 22 | 22 | 21 | 19 | 21 | 18 | 19 | 19 | 18 | 18 | 18 | 18 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SSE 9 | SE 9 | SE 9 | ESE 9 | S 6 | S 11 | S 10 | S 9 | SE 9 | S 8 | SSE 6 | SSE 9 | SSE 10 | S 12 | SSE 13 | S 13 | S 12 | SSE 14 | SSE 14 | SSE 14 |
| kJ | 86 | 58 | 36 | 55 | 55 | 23 | 284 | 198 | 106 | 21 | 33 | 70 | 137 | 222 | 139 | 299 | 334 | 224 | 631 | 596 | 613 |
Swell 2 Height (m) Direction Period (s) | SE 14 | ESE 3 | ESE 4 | ESE 5 | SE 12 | ESE 9 | SE 10 | SE 10 | ESE 9 | E 4 | SE 9 | S 12 | S 11 | SSE 13 | ESE 8 | SE 8 | ESE 8 | SSE 16 | SE 9 | E 9 | ESE 8 |
| kJ | 30 | 2 | 6 | 9 | 23 | 52 | 50 | 48 | 34 | 1 | 19 | 80 | 88 | 57 | 19 | 2 | 6 | 203 | 21 | 56 | 14 |
Swell 3 Height (m) Direction Period (s) | E 4 | SSE 14 | SE 13 | SE 13 | SSE 11 | S 11 | ENE 6 | E 3 | E 3 | S 16 | SSE 15 | ESE 8 | SSE 14 | ESE 8 | — | S 20 | SSE 18 | SE 10 | — | — | — |
| kJ | 1 | 18 | 26 | 25 | 12 | 58 | 8 | 2 | 2 | 5 | 22 | 7 | 36 | 6 | — | 8 | 32 | 4 | — | — | — |
Wind waves Height (m) Direction Period (s) | E 6 | E 4 | NNE 3 | — | SSW 4 | — | — | — | ENE 3 | S 8 | S 5 | — | — | SE 6 | SE 6 | ESE 6 | ESE 6 | ESE 4 | E 4 | E 4 | E 5 |
| kJ | 5 | 4 | 2 | — | 27 | — | — | — | 2 | 89 | 25 | — | — | 52 | 73 | 37 | 25 | 17 | 11 | 28 | 34 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 12 | 0 | 30 | 52 | 0 | 18 | 12 | 10 | 0 | 0 | 45 | 45 | 45 | 12 | 29 | 29 | 26 | 26 | 26 | 26 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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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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