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Praia dos Castelhanos (Ilha Bela) surfForecast / São Paulo / Brazil
48hr Weather and Surf, issued 8 am Thursday 18 Dec 2025 -03Forecast 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
25.4° C
(Which is slightly warmer than usual)How big are the waves at Praia dos Castelhanos (Ilha Bela) today?
The current surf forecast for Praia dos Castelhanos (Ilha Bela) at 3PM is: 0.8m 11s primary swell from a South direction and 0.6m 6s secondary swell from a Southeast direction, 0.3m 3s secondary swell from a East-northeast direction (forecast issued at 08:00am December 18). The wind direction is predicted to be onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Dec) | 3.5ft (1.1m) | 8s |
| Afternoon (18 Dec) | 2.5ft (0.8m) | 11s |
| Evening (18 Dec) | 2.5ft (0.7m) | 10s |
Table - waves today at Praia dos Castelhanos (Ilha Bela). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 8 | 11 | 11 | 10 | 10 | 9 | 6 | 9 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 93 | 160 | 265 | 149 | 141 | 94 | 87 | 58 | 58 | 40 | 42 | 41 | 35 | 40 | 60 | 35 | 24 | 26 | 27 | 26 | 29 | 28 | 69 | 74 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | cross- on |
High Tide / height (m) | 1:26PM 0.90 | 2:22AM 1.06 | 1:54PM 0.94 | 2:52AM 1.07 | 2:24PM 0.97 | |||||||||||||||||||
Low Tide / height (m) | 7:55AM 0.34 | 7:53PM 0.10 | 8:32AM 0.34 | 8:30PM 0.06 | 9:07AM 0.34 | 9:08PM 0.04 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| Sunrise | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:45 | - | - | - | - | - | - | - | 6:45 | - | - | - |
 |  | | | |  | | | | | | |  | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 22 | 23 | 23 | 23 | 22 | 22 | 22 | 22 | 23 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 25 | 24 | 24 | 23 | 23 |
| Feels °C (?) | 21 | 22 | 23 | 22 | 22 | 21 | 21 | 22 | 23 | 24 | 25 | 23 | 23 | 23 | 24 | 25 | 26 | 27 | 25 | 26 | 25 | 25 | 25 | 25 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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