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Cassino Surf Forecast
/ Rio Grande Do Sul (19 surf breaks) /
Surf Forecasts:
Cassino surfForecast / Rio Grande Do Sul / Brazil
48hr Weather and Surf, issued 2 am Monday 11 May 2026 -03Forecast update in hr min s Forecast update imminent
Cassino surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cassino sea temperature is
18.7° C
(Which is normal for this time of year)How big are the waves at Cassino today?
The current surf forecast for Cassino at 7AM is: 1.8m 14s primary swell from a South-southeast direction and 0.1m 10s secondary swell from a East direction (forecast issued at 02:00am May 11). An open ocean swell of 1.0m 5s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 4.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 May) | 6ft (1.9m) | 14s |
| Afternoon (11 May) | 6.5ft (2.0m) | 14s |
| Evening (11 May) | 6ft (1.8m) | 14s |
Table - waves today at Cassino. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 17°C on Tue afternoon, min 8°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Monday 11 | Tuesday 12 | Wednesday 13 | ||||||||||||||||||||||
12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SSE 15 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 | SSE 11 | SSE 13 | SSE 13 | |
1781 | 1624 | 1413 | 1496 | 1433 | 1440 | 1306 | 1226 | 1106 | 994 | 876 | 863 | 711 | 606 | 476 | 389 | 283 | 254 | 232 | 213 | 273 | 343 | 623 | 683 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | cross-off | off | off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | off | |
High Tide | 11:45AM0.26m | 1:01AM0.49m | 12:15PM0.30m | 1:39AM0.46m | 12:48PM0.33m | |||||||||||||||||||
Low Tide | 8:02AM0.19m | 5:57PM0.10m | 8:18AM0.19m | 7:20PM0.09m | 8:45AM0.19m | 8:33PM0.07m | ||||||||||||||||||
 | | |  | | | | | | | | | | | | | | | | | | |  |  | |
 | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — |
 | — | — | — | — | — | 5:42 | — | — | — | — | — | — | — | 5:40 | — | — | — | — | — | — | — | 5:39 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 10 | 9 | 8 | 8 | 12 | 14 | 14 | 12 | 10 | 9 | 8 | 8 | 15 | 17 | 16 | 14 | 12 | 11 | 10 | 10 | 14 | 16 | 16 | 15 |
3 | 3 | 2 | 2 | 6 | 9 | 10 | 8 | 6 | 5 | 3 | 3 | 9 | 12 | 12 | 11 | 8 | 7 | 7 | 7 | 12 | 14 | 15 | 14 | |
Swell 1 Height (m) Direction Period (s) | SSE 15 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 | SSE 11 | SSE 13 | SSE 13 |
 kJ | 1781 | 1624 | 1413 | 1496 | 1433 | 1440 | 1306 | 1226 | 1106 | 994 | 876 | 863 | 711 | 606 | 476 | 389 | 283 | 254 | 232 | 213 | 273 | 343 | 623 | 683 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | SE 16 | SE 16 | E 10 | E 10 | E 10 | E 10 |
| kJ | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 6 | 6 | 2 | 2 | 2 | 2 | 2 | 2 | 10 | 10 | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 10 | E 10 | E 10 | E 15 | E 15 | E 10 | E 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 4 | 4 | 2 | 4 |
Wind waves Height (m) Direction Period (s) | WSW 5 | WSW 5 | WSW 5 | WSW 4 | WSW 4 | W 4 | — | W 4 | W 4 | W 4 | W 4 | W 3 | W 3 | W 3 | W 4 | W 4 | WSW 4 | W 4 | W 4 | — | — | — | — | — |
| kJ | 45 | 45 | 45 | 36 | 18 | 13 | — | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 12 | 13 | 15 | 9 | 6 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 354 | 375 | 235 | 235 | 235 | 235 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 210 | 210 | 210 | 210 | 9 | 9 | 9 | 9 |
Best forecast wave conditions in Rio Grande Do Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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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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