Praia dos Castelhanos (Ilha Bela) Surf Forecast

/ São Paulo (84 surf breaks) /

Brazil (447 surf breaks) / Lat Long: (23.86° S 45.29° W)

Surf Forecasts:

Praia dos Castelhanos (Ilha Bela) surfForecast / São Paulo / Brazil

12 Day Weather and Surf, issued 8 am Thursday 28 Aug 2025 -03

Forecast 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 22.2° C
(Which is 1.6°C warmer than normal for this time of year)

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 Thursday (Aug 28) at 12PM. The primary swell is predicted to be 0.7m and 11s period with a secondary swell of 0.4m and 5s. 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 12 days are 2.5m 9s and forecast to arrive on Wednesday (Sep 03) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Thursday (Aug 28) at 3PM.

Wave Type	Time (-03) & Date	Wave Height & Period
Next good surf (1 star+)	12PM (Thu 28th Aug)	2.5ft (0.7m) 11s
Best Surf	6AM (Sat 30th Aug)	4ft (1.2m) 6s
Most Powerful	6AM (Wed 3rd Sep)	8ft (2.5m) 9s

Table - best surf conditions forecast for Praia dos Castelhanos (Ilha Bela) over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Light rain (total 4mm), mostly falling on Fri afternoon. Warm (max 21°C on Sat morning, min 19°C on Thu night). Wind will be generally light.									Days 3-6 Weather Summary Mostly dry. Warm (max 21°C on Sun morning, min 20°C on Sun morning). Mainly fresh winds.
	Thursday 28			Friday 29			Saturday 30			Sunday 31			Monday 01			Tuesday 02			Wednesday 03
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	1	1	1	1	1	0	2	0	0	0	0	0	0	0	0	0	0	0	2	0	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	S	S	S	S	S	S	E	ESE	E	E	ESE	E	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	E
Period(s) (?)	11	11	11	11	11	10	7	6	6	7	7	7	7	7	7	8	8	8	9	9	8
Wave Graph (?)
Energy (?)	143	143	116	122	91	127	283	112	116	350	168	211	225	209	267	353	363	439	1410	430	1280
Wind (km/h)	WSW	WSW	WNW	WSW	WSW	ENE	ENE	E	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	off	cross- off	cross- off	cross- off	glass	cross- on	glass	on	cross- on	on	on	on	on	on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on
High Tide / height (m)		4:42PM 0.94		5:08AM 0.97	5:05PM 0.88		5:48AM 0.86	5:34PM 0.80		6:45AM 11:36AM 0.75 0.66		6:15PM 0.71		12:20PM 0.78	8:01PM 11:46PM 0.62 0.62		12:49PM 0.89	12:22AM 0.74		1:15PM 1.00	12:47AM 0.86
Low Tide / height (m)	11:04AM 0.31		11:01PM 0.28	11:31AM 0.42		11:33PM 0.33		12:15PM 0.54	12:41AM 0.40	10:38AM 0.66	2:47PM 0.62		3:10AM 0.43	4:59PM 0.58	10:03PM 0.61	4:53AM 0.36		6:08PM 0.48	5:58AM 0.24		6:50PM 0.39

	Thursday 28			Friday 29			Saturday 30			Sunday 31			Monday 01			Tuesday 02			Wednesday 03
Sunrise	6:16	-	-	6:15	-	-	6:13	-	-	6:13	-	-	6:11	-	-	6:11	-	-	6:09	-	-
Sunset	-	5:47	-	-	5:49	-	-	5:49	-	-	5:49	-	-	5:50	-	-	5:50	-	-	5:50	-

Rain (mm)	-	-	-	-	4	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	20	20	19	20	20	20	21	21	20	21	21	20	21	21	20	21	21	20	22	21	21
Feels °C (?)	20	21	20	21	22	21	21	20	18	20	20	18	20	19	18	19	19	17	21	20	21

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for São Paulo

Wind Update Recent cross-shore wind 91 km from Praia dos Castelhanos (Ilha Bela) has fallen light (calm at Parati). Waves should be turning clean at Praia dos Castelhanos (Ilha Bela). 1.0m 11s groundswell from the S with a 0.5m 5s windswell from the ESE and a 0.3m 5s windswell from the S. 3 swells combining to make bigger set waves.
1 hour 8 minutes ago Praia dos Castelhanos (Ilha Bela)

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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.