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

information circle12 Day Weather and Surf, issued 8 pm Friday 05 Dec 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
24.8° C
(Which is slightly warmer than usual)


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 Monday (Dec 08) at 6AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.2m 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 1.5m 8s and forecast to arrive on Wednesday (Dec 10) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Thursday (Dec 11) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 8th Dec)2.5ft (0.8m) 6s
Best Surf 3PM (Wed 10th Dec)4.5ft (1.4m) 9s
Most Powerful 6PM (Wed 10th Dec)5ft (1.5m) 8s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Mon afternoon. Warm (max 25°C on Mon morning, min 21°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 22mm), heaviest during Tue afternoon. Warm (max 32°C on Thu morning, min 23°C on Mon night). Wind will be generally light.

Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Fri
12
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
0
0
0
0
0
0
1
0
0
0
0
0
1
2
1
1
0
0
1
0
Swell
Height Map
Wave Height (m) & direction (?)
0.7
SSE
0.9
SE
0.9
SE
0.9
E
0.9
ESE
0.8
ESE
0.8
E
0.8
ESE
0.8
ESE
0.6
ESE
0.9
ESE
1.3
E
1
ESE
1.4
E
1.4
E
0.9
ESE
0.8
ESE
0.7
E
0.4
ESE
0.7
S
0.7
S
Period(s) (?)88856666667778989991311
Wave
Graph
(?)Metric surfscale
Energy kJ (?)58918447594443454729621591082652901021037625163116
Wind
(km/h)
20
NE
15
ENE
20
E
25
ENE
10
SE
15
ESE
15
NE
5
SSE
10
ENE
15
NE
10
ENE
15
NE
10
NE
10
N
10
NW
10
NNW
10
NW
15
E
5
NW
0
WSW
10
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
ononcross-
on
cross-
on
oncross-
on
glassoncross-
on
cross-
on
cross-
on
cross-
on
crosscross-
off
cross-
off
cross-
off
oncross-
off
glasscross-
on
High Tide
/ height (m)
3:30AM
1.12
2:45PM
0.92
4:10AM
1.05
3:17PM
0.94
4:48AM
0.96
3:53PM
0.95
5:28AM
0.87
4:33PM
0.94
6:10AM
0.80
5:20PM
0.90
7:03AM
0.75
6:19PM
0.84
8:25AM
0.72
Low Tide
/ height (m)
9:11PM
0.02
10:08AM
0.44
9:53PM
0.03
10:45AM
0.52
10:37PM
0.07
11:19AM
0.59
11:25PM
0.14
11:55AM
0.62
12:19AM
0.22
12:43PM
0.63
1:21AM
0.30
1:48PM
0.61
2:29AM
0.36
3:01PM
0.57
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Fri
12
Sunrise-5:05--5:05--5:05--5:05--5:05--5:05--5:07-
Sunset--6:37--6:38--6:38--6:39--6:40--6:40--6:42
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
clear
thunderstorm
part cloud
part cloud
thunderstorm
rain showers
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
thunderstorm
Rain (mm)
--------1--157-------1
Temp. °C222323232424232525242625242929273230282927
Feels °C (?)202423222626252828262826263231293431313331
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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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