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Surf Forecasts:

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

information circle12 Day Weather and Surf, issued 2 pm Tuesday 13 Jan 2026 -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
27.5° C
 (Which is 1.7°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 Tuesday (Jan 13) at 9PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.2m and 9s. 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 2.3m 9s and forecast to arrive on Tuesday (Jan 20) 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 0.7m 4s period and expected on Monday (Jan 19) at 3AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Tue 13th Jan)3ft (0.9m) 8s
Best Surf 3AM (Thu 15th Jan)4.5ft (1.3m) 8s
Most Powerful 9PM (Tue 20th Jan)7.5ft (2.3m) 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 DaysHourly
Print Table

Short Range Forecast Light rain (total 8mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue afternoon, min 24°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 34mm), heaviest during Sun afternoon. Warm (max 28°C on Sun morning, min 23°C on Mon morning). Wind will be generally light.

Tue
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
1
1
0
1
0
0
1
1
0
2
1
0
1
1
0
1
1
1
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
ESE
0.8
ESE
1.3
E
1.3
E
1.1
ESE
1.2
ESE
0.9
ESE
1.5
E
0.9
ESE
0.9
ESE
1.4
E
1.1
ESE
0.9
ESE
1.3
E
1.1
ESE
0.9
ESE
0.9
ESE
0.9
ESE
0.6
ESE
1.4
S
1.6
SSE
Period(s) (?)888888888778878888868
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1076419319113818110526610278206131991811351021028944148359
Wind
(km/h)
10
ESE
5
N
10
ENE
15
E
10
W
10
NE
5
ENE
10
N
0
SW
15
E
5
WNW
5
WSW
10
ESE
10
N
5
W
15
E
10
NNW
15
WSW
15
W
25
S
20
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onglassononoffcross-
on		cross-
on		crossglassoncross-
off		glassoncrossoffoncross-
off		offoffcrosscross-
off
High Tide
/ height (m)
12:54AM
0.85
12:20PM
0.74
1:31AM
0.94
12:59PM
0.81
2:02AM
1.01
1:30PM
0.88
2:29AM
1.06
1:57PM
0.95
2:55AM
1.10
2:24PM
1.03
3:20AM
1.12
2:52PM
1.09
3:45AM
1.12
Low Tide
/ height (m)
5:24PM
0.36
6:26AM
0.49
6:23PM
0.27
7:15AM
0.43
7:09PM
0.18
7:53AM
0.37
7:50PM
0.09
8:27AM
0.33
8:28PM
0.03
8:59AM
0.30
9:04PM
-0.02
9:30AM
0.29
9:40PM
-0.04
10:02AM
0.29
Tue
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Sunrise--5:26--5:26--5:26--5:28--5:28--5:28--5:30
Sunset6:52--6:52--6:52--6:52--6:52--6:52--6:52--
rain showers
thunderstorm
clear
thunderstorm
thunderstorm
cloud
cloud
cloud
clear
part cloud
thunderstorm
clear
thunderstorm
part cloud
part cloud
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
part cloud
Rain (mm)
31-22-----1-2--17410918-
Temp. °C272626262426262527272527272528282624242423
Feels °C (?)302928282628292631292730292830302926262422
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

View detailed surf forecast for Praia dos Castelhanos (Ilha Bela) at:
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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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