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Praia dos Castelhanos (Ilha Bela) surfForecast / São Paulo / Brazil
12 Day Weather and Surf, issued 8 am Sunday 13 Jul 2025 -03
Best Forecast Surf Conditions for Praia dos Castelhanos (Ilha Bela) this week:
The surf forecast for Praia dos Castelhanos (Ilha Bela) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 15) at 6AM. The primary swell is predicted to be 0.2m and 18s period with a secondary swell of 0.4m and 8s. Another secondary swell of 0.2m and 7s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Praia dos Castelhanos (Ilha Bela) in the next 12 days are 0.9m 12s and forecast to arrive on Saturday (Jul 19) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Friday (Jul 18) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 15th Jul) | 0.5ft (0.2m) 18s |
| Best Surf | 6AM (Sat 19th Jul) | 3ft (0.9m) 12s |
| Most Powerful | 6AM (Sat 19th Jul) | 3ft (0.9m) 12s |
Table - best surf conditions forecast for Praia dos Castelhanos (Ilha Bela) over the next 12 days.
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 4 | 5 | 5 | 8 | 17 | 8 | 7 | 7 | 7 | 15 | 7 | 7 | 7 | 7 | 7 | 8 | 11 | 11 | 10 | 9 | 9 | 8 | 8 | 7 | 5 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 50 | 43 | 31 | 45 | 30 | 74 | 54 | 30 | 34 | 36 | 31 | 51 | 71 | 134 | 47 | 49 | 52 | 107 | 206 | 191 | 134 | 92 | 84 | 59 | 40 | 31 | 37 | 48 | 39 | 37 | 44 | 46 | 47 | 49 | 66 | 46 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | cross- on | cross- on | on | cross- on | glass | on | cross | cross- on | on | cross- on | cross- on | cross- on | cross- on | off | cross- off | off | off | cross | cross- on | on | on | cross- on | cross- on | on | cross- on | glass | on | cross | off | cross- off | off | cross- off | cross- off | cross- off |
High Tide / height (m) | 4:37PM 1.07 | 4:14AM 1.09 | 5:12PM 1.03 | 4:53AM 1.07 | 5:49PM 0.96 | 5:36AM 1.02 | 6:29PM 0.88 | 6:27AM 0.95 | 7:15PM 0.80 | 7:34AM 0.86 | 8:12PM 0.72 | 9:41AM 0.81 | 9:51PM 0.67 | 12:40PM 0.90 | 11:54PM 0.69 | 1:33PM 0.99 | 12:39AM 0.75 | 2:11PM 1.06 | 1:14AM 0.82 | 2:42PM 1.09 | 1:47AM 0.91 | 3:09PM 1.09 | 2:19AM 1.00 | |||||||||||||
Low Tide / height (m) | 10:41AM 0.01 | 11:07PM 0.38 | 11:24AM 0.05 | 11:47PM 0.41 | 12:11PM 0.13 | 12:32AM 0.45 | 1:04PM 0.23 | 1:26AM 0.47 | 2:10PM 0.33 | 2:34AM 0.47 | 3:33PM 0.42 | 3:53AM 0.43 | 5:05PM 0.46 | 5:10AM 0.35 | 6:27PM 0.46 | 6:15AM 0.25 | 7:27PM 0.43 | 7:09AM 0.14 | 8:11PM 0.42 | 7:56AM 0.06 | 8:46PM 0.41 | 8:37AM -0.00 | 9:15PM 0.40 | |||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||||||||||||
| Sunrise | 6:43 | - | - | 6:43 | - | - | 6:43 | - | - | 6:43 | - | - | 6:41 | - | - | 6:41 | - | - | 6:41 | - | - | 6:41 | - | - | 6:41 | - | - | 6:41 | - | - | 6:41 | - | - | 6:39 | - | - |
| Sunset | - | 5:30 | - | - | 5:30 | - | - | 5:30 | - | - | 5:30 | - | - | 5:30 | - | - | 5:31 | - | - | 5:31 | - | - | 5:32 | - | - | 5:32 | - | - | 5:34 | - | - | 5:34 | - | - | 5:34 | - |
 | |  | | | | | | | | | | | | | |  |  |  | | | | | | | | | | | | |  |  |  |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 15 | 18 | 8 | - |
| Temp. °C | 21 | 21 | 19 | 19 | 19 | 18 | 20 | 20 | 19 | 20 | 20 | 19 | 23 | 22 | 22 | 22 | 21 | 18 | 20 | 20 | 19 | 20 | 20 | 19 | 20 | 20 | 19 | 23 | 22 | 24 | 20 | 20 | 19 | 17 | 18 | 17 |
| Feels °C (?) | 19 | 19 | 17 | 18 | 18 | 18 | 21 | 20 | 19 | 20 | 19 | 18 | 22 | 21 | 21 | 21 | 21 | 18 | 21 | 21 | 20 | 20 | 20 | 18 | 21 | 20 | 20 | 24 | 23 | 24 | 18 | 19 | 18 | 17 | 15 | 14 |
Short Range Forecast: Mostly dry. Warm (max 21°C on Sun morning, min 17°C on Mon night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 23°C on Thu morning, min 18°C on Wed night). Wind will be generally light. | Days 6-9 Weather Summary Mostly dry. Warm (max 20°C on Sat morning, min 19°C on Sat morning). Wind will be generally light. | Long Range Forecast: Heavy rain (total 42mm), heaviest during Thu morning. Warm (max 24°C on Tue night, min 16°C on Thu night). Winds increasing (calm on Tue morning, fresh winds from the W by Wed morning). | |||||||||||||||||||||||||||||||||
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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 12 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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