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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 pm Wednesday 20 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
15.3° C
(Which is 2.1°C colder than average for this time of year)How big are the waves at Cassino today?
The current surf forecast for Cassino at 6PM is: 2.5m 15s primary swell from a South-southeast direction and 1.9m 16s secondary swell from a South-southeast direction (forecast issued at 02:00pm May 20). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | - | - |
| Afternoon (20 May) | 5ft (1.6m) | 16s |
| Evening (20 May) | 7ft (2.2m) | 15s |
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 16°C on Fri night, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSE 15 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 16 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | |
849 | 1327 | 2809 | 2049 | 2137 | 2253 | 1294 | 998 | 852 | 1862 | 2122 | 1969 | 1189 | 994 | 1605 | 837 | 679 | 587 | 481 | 384 | 371 | 285 | 280 | 215 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | on | on | cross-on | on | |
High Tide | 11:04AM0.26m | 4:59PM0.30m | 11:05PM0.72m | 11:52AM0.25m | 5:44PM0.26m | 00:00AM0.69m | 12:41PM0.25m | 6:37PM0.23m | 00:57AM0.64m | |||||||||||||||
Low Tide | 1:42PM0.15m | 6:40PM0.27m | 7:54AM-0.10m | 2:37PM0.14m | 7:21PM0.23m | 8:46AM-0.05m | 3:35PM0.14m | 8:04PM0.21m | ||||||||||||||||
 | |  |  | | | |  | |  |  | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 7:13 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 7:15 | — |
 | — | 5:36 | — | — | — | — | — | — | — | 5:36 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | 5:35 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 12 | 14 | 13 | 12 | 11 | 11 | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 16 | 16 | 16 | 16 | 16 |
7 | 8 | 8 | 7 | 6 | 6 | 6 | 8 | 9 | 9 | 9 | 10 | 10 | 11 | 10 | 10 | 11 | 11 | 13 | 14 | 14 | 14 | 14 | 13 | |
Swell 1 Height (m) Direction Period (s) | SSE 15 | SSE 16 | SSE 16 | — | — | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 16 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 |
 kJ | 849 | 1327 | 1762 | — | — | 2253 | 1294 | 998 | 852 | 1862 | 2122 | 1969 | 1189 | 994 | 1605 | 837 | 679 | 587 | 481 | 384 | 371 | 285 | 280 | 215 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 18 | SSE 17 | SE 16 | — | — | — | — | — | — | — | — | — | — | — | — | E 9 | E 9 |
| kJ | — | — | — | — | — | — | — | 82 | 504 | 625 | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WSW 4 | WSW 4 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | — | — | — | — | SSE 15 | SSE 14 | — | — | SSE 13 | — | — | — | — | — | — | — | — | — |
| kJ | 13 | 5 | 2809 | 2049 | 2137 | 1628 | — | — | — | — | 1578 | 1578 | — | — | 863 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 515 | 293 | 515 | 336 | 336 | 336 | 235 | 9 | 9 | 235 | 235 | 235 | 235 | 235 | 235 | 235 | 235 | 545 | 514 | 286 | 286 | 293 | 303 | 336 |
Best forecast wave conditions in Rio Grande Do Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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