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

information circle12 Day Weather and Surf, issued 2 am Saturday 27 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
26.8° 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 Sunday (Dec 28) at 9AM. The primary swell is predicted to be 0.4m and 7s period with a secondary swell of 0.3m 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 1.7m 16s and forecast to arrive on Wednesday (Dec 31) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Sunday (Dec 28) at 12PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Sun 28th Dec)1.5ft (0.4m) 7s
Best Surf 6AM (Wed 31st Dec)4.5ft (1.4m) 18s
Most Powerful12PM (Wed 31st Dec)5.5ft (1.7m) 16s

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 Moderate rain (total 15mm), heaviest on Mon night. Warm (max 27°C on Sat morning, min 24°C on Mon night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 31mm), heaviest during Wed afternoon. Warm (max 27°C on Thu morning, min 24°C on Tue night). Wind will be generally light.

Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
1
0
1
1
0
0
0
0
2
4
4
2
2
1
1
1
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
ESE
0.4
ESE
0.5
E
0.4
ESE
0.5
E
0.4
S
0.4
ESE
0.4
S
0.3
S
0.2
S
0.2
S
0.4
SSE
1.6
SSE
1.7
SSE
1.5
SSE
1.1
SSE
0.9
SSE
0.8
SSE
0.6
S
0.6
S
0.5
S
Period(s) (?)776771071111101020161614131212111110
Wave
Graph
(?)Metric surfscale
Energy kJ (?)1516181823331636208715413601376850437252183858351
Wind
(km/h)
5
SW
10
E
10
NE
5
WSW
10
SE
5
N
10
SW
5
SE
10
WSW
0
NW
5
SSE
5
NNW
0
S
5
SW
10
NNE
5
WSW
5
ESE
5
NNW
10
WSW
5
SSE
5
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassoncross-
on
cross-
off
cross-
on
glasscross-
off
cross-
on
offglasscross-
on
cross-
off
glassglasscross-
on
cross-
off
cross-
on
glassoffcrosscross-
on
High Tide
/ height (m)
7:28PM
0.87
8:58AM
0.79
9:11PM
0.83
11:00AM
0.77
11:38PM
0.89
12:05PM
0.78
12:54AM
0.99
12:43PM
0.79
1:45AM
1.08
1:15PM
0.83
2:28AM
1.13
1:44PM
0.87
Low Tide
/ height (m)
2:47PM
0.50
3:22AM
0.32
4:00PM
0.46
4:43AM
0.34
5:08PM
0.38
6:00AM
0.34
6:08PM
0.28
7:05AM
0.33
7:00PM
0.17
7:59AM
0.33
7:47PM
0.07
8:44AM
0.35
8:31PM
-0.00
Saturday
27
Sunday
28
Monday
29
Tuesday
30
Wednesday
31
Thursday
01
Friday
02
Sunrise5:13--5:13--5:13--5:15--5:16--5:16--5:16--
Sunset-6:50--6:50--6:50--6:51--6:51--6:51--6:52-
clear
clear
clear
clear
clear
clear
clear
thunderstorm
rain showers
rain showers
thunderstorm
thunderstorm
part cloud
thunderstorm
rain showers
rain showers
thunderstorm
thunderstorm
part cloud
thunderstorm
part cloud
Rain (mm)
-------69152-152141-1-
Temp. °C272726272725272624252525262525272625262625
Feels °C (?)303029303029303027302929293028313030303029
  • 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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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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