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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 8 pm 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 2AM is: 1.7m 14s primary swell from a South-southeast direction and 0.1m 9s secondary swell from a East direction (forecast issued at 08:00pm May 11). An open ocean swell of 0.6m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 5ft (1.6m) | 13s |
| Afternoon (12 May) | 4.5ft (1.3m) | 13s |
| Evening (12 May) | 3.5ft (1.1m) | 13s |
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 18°C on Tue afternoon, min 8°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 11 | Tuesday 12 | Wednesday 13 | Thursday 14 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 | SSE 12 | SSE 12 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | |
1353 | 1306 | 1306 | 979 | 965 | 863 | 711 | 606 | 476 | 389 | 283 | 254 | 232 | 209 | 273 | 415 | 566 | 653 | 551 | 518 | 400 | 387 | 361 | 432 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | cross-off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 1:01AM0.49m | 12:15PM0.30m | 1:39AM0.46m | 12:48PM0.33m | 2:19AM0.39m | 4:13AM0.39m | 1:20PM0.37m | |||||||||||||||||
Low Tide | 5:57PM0.10m | 8:18AM0.19m | 7:20PM0.09m | 8:45AM0.19m | 8:33PM0.07m | 3:45AM0.39m | 9:18AM0.19m | |||||||||||||||||
 | | | | |  | | | | | | | | | | |  | | | | |  | | | |
 | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:07 | — | — | — | — | — | — | — | 7:09 | — | — | — |
 | — | — | — | — | — | — | — | 5:40 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 12 | 10 | 9 | 8 | 9 | 15 | 18 | 16 | 14 | 12 | 11 | 10 | 11 | 15 | 17 | 16 | 15 | 15 | 14 | 13 | 13 | 15 | 16 |
10 | 8 | 6 | 5 | 3 | 4 | 9 | 13 | 12 | 11 | 8 | 7 | 6 | 8 | 13 | 15 | 15 | 14 | 14 | 12 | 11 | 10 | 12 | 11 | |
Swell 1 Height (m) Direction Period (s) | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 | SSE 12 | SSE 12 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 |
 kJ | 1353 | 1306 | 1306 | 979 | 965 | 863 | 711 | 606 | 476 | 389 | 283 | 254 | 232 | 209 | 273 | 415 | 566 | 653 | 551 | 518 | 400 | 387 | 361 | 432 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | SE 16 | SE 16 | SE 16 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 |
| kJ | 2 | 2 | 2 | 2 | 6 | 6 | 2 | 2 | 2 | 2 | 2 | 10 | 10 | 10 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | E 10 | E 10 | E 10 | E 15 | E 15 | ENE 10 | E 10 | E 10 | SE 14 | E 10 | E 10 | E 10 | E 10 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 4 | 4 | 9 | 8 | 8 | 8 | 8 | 8 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | WSW 3 | W 4 | W 4 | W 3 | W 3 | W 3 | W 4 | W 4 | W 4 | W 4 | WSW 4 | WSW 4 | W 4 | WSW 3 | W 3 | — | — | — | — | — | — | — | — | — |
| kJ | 4 | 13 | 21 | 8 | 8 | 8 | 9 | 9 | 9 | 13 | 15 | 11 | 6 | 2 | 2 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 9 | 9 | 9 | 9 | 9 | 9 | 236 | 9 | 9 | 9 | 9 | 210 | 210 | 224 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 210 | 210 | 235 |
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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