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 2 pm Monday 15 Sep 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 20.8° C
(Which is 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 Tuesday (Sep 16) at 9AM. The primary swell is predicted to be 1.6m and 13s period with a secondary swell of 1.3m and 7s. 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 1.6m 13s and forecast to arrive on Monday (Sep 15) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Monday (Sep 22) at 3PM.

Wave Type	Time (-03) & Date	Wave Height & Period
Next good surf (1 star+)	9AM (Tue 16th Sep)	5ft (1.6m) 13s
Best Surf	9AM (Tue 16th Sep)	5ft (1.6m) 13s
Most Powerful	9PM (Mon 15th Sep)	5ft (1.6m) 13s

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 Mostly dry. Warm (max 22°C on Tue morning, min 19°C on Mon night). Wind will be generally light.											Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Fri afternoon. Warm (max 28°C on Sat morning, min 20°C on Thu night). Wind will be generally light.
	Mon 15		Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	0	0	4	2	3	3	2	2	1	0	2	2	0	2	2	0	1	1	1	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	SE	SE	SE	SE	SE	SE	SE	SE	SE	SE	ESE	ESE	ESE	ESE	ESE	ESE	E	ESE	E	ESE	ESE
Period(s) (?)	14	13	13	13	13	13	13	12	12	12	9	9	9	9	9	9	8	9	9	9	9
Wave Graph (?)
Energy (?)	947	933	1076	884	762	685	436	414	437	416	440	404	308	295	212	186	404	194	536	138	181
Wind (km/h)	ENE	ENE	SSW	S	W	W	SW	WSW	ENE	E	SE	SSE	E	W	N	ENE	NE	SSW	NE	N	NW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	on	cross- on	glass	cross	off	off	cross- off	cross- off	on	on	glass	glass	on	off	glass	on	cross- on	glass	cross- on	cross	cross- off
High Tide / height (m)		12:14AM 0.56		1:14PM 0.96	12:19AM 0.69		1:31PM 1.01	12:35AM 0.83		1:44PM 1.04	12:57AM 0.96		1:57PM 1.07	1:23AM 1.07		2:11PM 1.08	1:49AM 1.14		2:27PM 1.09	2:17AM 1.19
Low Tide / height (m)		10:16PM 0.55	4:58AM 0.32		6:44PM 0.56	6:03AM 0.21		7:00PM 0.48	6:48AM 0.11		7:22PM 0.40	7:24AM 0.05		7:45PM 0.33	7:55AM 0.01		8:08PM 0.27	8:24AM 0.01		8:30PM 0.22	8:51AM 0.04

	Mon 15		Tuesday 16			Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21
Sunrise	-	-	5:56	-	-	5:56	-	-	5:54	-	-	5:54	-	-	5:52	-	-	5:52	-	-	5:50
Sunset	5:53	-	-	5:54	-	-	5:54	-	-	5:54	-	-	5:55	-	-	5:55	-	-	5:55	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	1	1	-	-	-	-	-	-	-
Temp. °C	21	20	22	21	20	22	22	20	21	21	20	22	22	24	28	27	26	27	31	32	35
Feels °C (?)	20	19	23	23	22	23	23	22	21	21	22	25	23	26	28	27	27	29	29	29	33

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 Continuing clean conditions at Praia dos Castelhanos (Ilha Bela) (calm at Parati 91 km from Praia dos Castelhanos (Ilha Bela)). A 2.0m groundswell from the SE
1 hour 21 minutes ago Praia dos Castelhanos (Ilha Bela)

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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Praia dos Castelhanos (Ilha Bela) 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 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.