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

information circle16 Day Weather and Surf, issued 2 pm Saturday 30 May 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
22.8° C
(Which is normal for this time of year)

Praia dos Castelhanos (Ilha Bela) surf forecast from 30 May 2026:

  • Best quality surf: Saturday 30 May, 9PM (local time) - 4.5ft (1.3m), 10s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Thursday 4 Jun, 12AM (local time) - 4.5ft (1.3m), 12s period, SSE swell with 456 kJ wave energy.
  • Next surfable swell (1★+): Saturday 30 May, 9PM (local time) - 4.5ft (1.3m), 10s period with SSE swell.

Best Forecast Surf Conditions for Praia dos Castelhanos (Ilha Bela) this week:

The surf forecast for Praia dos Castelhanos (Ilha Bela) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (May 30) at 9PM. The primary swell is predicted to be 1.3m and 10s period with a secondary swell of 0.1m and 7s. 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 16 days are 1.3m 12s and forecast to arrive on Thursday (Jun 04) at 12AM. Winds are predicted to be 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 Tuesday (Jun 02) at 3PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sat 30th May)4.5ft (1.3m) 10s
Best Surf 9PM (Sat 30th May)4.5ft (1.3m) 10s
Most Powerful12AM (Thu 4th Jun)4.5ft (1.3m) 12s

Table - best surf conditions forecast for Praia dos Castelhanos (Ilha Bela) over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Mon night. Warm (max 22°C on Sun afternoon, min 19°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 15mm), heaviest on Tue night. Warm (max 21°C on Tue afternoon, min 19°C on Tue night). Wind will be generally light.

Sat
30
Sunday
31
Monday
1
Tuesday
2
Wednesday
3
Thursday
4
Friday
5
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
1
2
2
2
2
2
0
1
1
1
1
2
0
0
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SSE
11
1.3
SSE
11
1.2
SSE
11
1.2
SSE
10
1
SSE
10
0.9
SSE
10
0.8
SSE
9
0.8
SSE
9
0.8
SSE
10
0.6
SE
9
0.8
SSE
8
0.9
SSE
10
1
SSE
9
1.3
SSE
12
0.9
SSE
11
0.8
SSE
11
1.1
ESE
7
1.1
E
7
0.6
SSE
13
0.8
SSE
12
0.7
SSE
12
Wave Graph
Metric surfscale
Energy kJ
207
359
322
292
212
148
110
106
105
71
80
148
151
456
170
156
117
113
133
195
142
Wind (km/h)
10
ENE
10
W
10
SW
10
SW
5
NNW
0
SSW
10
S
10
SSW
10
SW
15
SSW
5
WSW
0
S
15
E
20
ENE
20
E
20
E
15
ENE
15
ENE
15
E
20
ENE
10
NE
on
off
cross-off
cross-off
glassy
glassy
cross
cross-off
cross-off
cross-off
cross-off
glassy
on
on
on
on
on
on
on
cross-on
cross-on
High Tide
1:53AM0.94m
2:47PM1.06m
2:21AM0.95m
3:19PM1.05m
2:51AM0.96m
3:51PM1.02m
3:24AM0.97m
4:25PM0.99m
4:01AM0.97m
5:04PM0.96m
4:43AM0.95m
5:50PM0.92m
5:30AM0.93m
Low Tide
8:29PM0.33m
8:27AM0.09m
9:04PM0.36m
9:02AM0.08m
9:39PM0.38m
9:40AM0.09m
10:15PM0.41m
10:21AM0.12m
10:55PM0.44m
11:08AM0.16m
11:43PM0.47m
12:02PM0.20m
00:40AM0.49m
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
rain showers
clear
clear
rain showers
rain showers
light rain
rain showers
light rain
cloud
rain showers
clear
clear
rain showers
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
6:35
6:35
6:35
6:37
6:37
6:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:21
5:21
5:21
5:21
5:21
5:21
5:21
5:21
2
3
1
2
4
1
4
3
Temp °C
21
20
21
22
20
21
21
20
21
21
19
20
20
20
20
20
19
21
21
19
20
22
21
22
23
22
22
22
21
21
20
19
22
19
18
18
18
18
19
19
17
19
Swell 1
Height (m)
Direction
Period (s)
0.9
SSE
11
1.3
SSE
11
1.2
SSE
11
1.2
SSE
10
1
SSE
10
0.9
SSE
10
0.8
SSE
9
0.8
SSE
9
0.8
SSE
10
0.6
SE
9
0.8
SSE
8
0.9
SSE
10
1
SSE
9
1.3
SSE
12
1
SE
7
0.8
SSE
11
0.7
SSE
11
0.9
ESE
7
0.6
SSE
13
0.9
ESE
7
0.9
ESE
6
Energy kJ
207
359
322
292
212
148
110
106
105
71
80
148
151
456
85
156
117
64
133
70
62
Swell 2
Height (m)
Direction
Period (s)
0.1
E
7
0.1
E
7
0.1
E
7
0.7
ESE
7
0.7
ESE
7
0.6
S
10
0.3
SE
12
0.2
E
6
0.2
E
6
0.4
S
8
0.6
SE
9
0.7
SE
8
0.2
SSE
13
0.1
S
18
0.9
SSE
11
0.1
S
20
0.2
SSE
18
0.7
SSE
10
0.5
S
10
0.8
SSE
12
0.7
SSE
12
Energy kJ
1
1
1
41
40
66
23
3
3
22
64
71
17
6
170
8
30
106
49
195
142
Swell 3
Height (m)
Direction
Period (s)
0.6
ESE
7
0.5
ESE
6
0.4
E
6
0.4
S
9
0.2
E
6
0.2
E
6
0.2
E
6
0.2
E
6
0.3
SE
10
0.1
S
21
0.4
SSE
14
Energy kJ
35
23
12
25
3
3
3
3
15
9
73
Wind waves
Height (m)
Direction
Period (s)
0.2
SSW
2
0.5
SW
3
0.7
SE
8
1.1
ESE
6
1.2
ESE
6
1.2
ESE
7
1.1
ESE
7
1.1
E
7
0.8
ESE
7
1.2
ESE
7
1.2
E
6
Energy kJ
1
5
60
94
117
120
99
113
59
135
109
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
2
2
1
1
1
1
1
2
2
3
2
2
2
2
2
2
2
Distance (km)
18
0
0
0
0
0
348
0
0
0
0
0
37
26
26
26
26
12
29
18
10
Best forecast wave conditions in São Paulo
Rating
(10 max)
2
2
2
2
2
2
1
1
1
1
2
2
3
2
2
2
2
2
2
2
Best forecast wave conditions in Brazil
Rating
(10 max)
3
3
2
2
2
2
2
2
2
1
1
2
2
3
3
2
3
3
2
3
3
Header Global
Rating
(10 max)
7
7
6
5
5
4
5
5
6
4
4
5
5
5
4
5
8
5
5
7
9
  • 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 16 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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