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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 18 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
15.5° 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 3AM is: 1.4m 16s primary swell from a South-southeast direction (forecast issued at 08:00pm May 18). The wind direction is predicted to be offshore and the swell rating is 3.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 4.5ft (1.4m) | 14s |
| Afternoon (19 May) | 3.5ft (1.0m) | 13s |
| Evening (19 May) | 3ft (0.9m) | 12s |
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 14°C on Tue afternoon, min 8°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||||||||
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 10 | SSE 18 | SSE 17 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 12 | S 12 | SSE 12 | SSE 12 | SSE 14 | SSE 15 | SSE 16 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | |
222 | 390 | 980 | 978 | 773 | 731 | 497 | 367 | 280 | 263 | 299 | 313 | 469 | 596 | 960 | 1656 | 1785 | 1751 | 1773 | 1652 | 2507 | 1094 | 983 | 816 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 3:40PM0.39m | 9:14PM0.66m | 10:15AM0.28m | 4:19PM0.35m | 10:10PM0.71m | 11:04AM0.26m | 4:59PM0.30m | 11:05PM0.72m | 11:52AM0.25m | |||||||||||||||
Low Tide | 5:23PM0.36m | 6:15AM-0.10m | 12:51PM0.17m | 6:00PM0.32m | 7:04AM-0.12m | 1:42PM0.15m | 6:40PM0.27m | 7:54AM-0.10m | 2:37PM0.14m | |||||||||||||||
 | | | | |  | | | | | | | | | | |  | | | | |  | | | |
 | — | — | — | — | 7:13 | — | — | — | — | — | — | — | 7:13 | — | — | — | — | — | — | — | 7:13 | — | — | — |
 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:36 | — | — | — | — | — | — | — | 5:36 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 12 | 11 | 10 | 8 | 8 | 11 | 14 | 13 | 12 | 10 | 9 | 8 | 8 | 12 | 14 | 14 | 13 | 12 | 12 | 12 | 12 | 13 | 13 |
10 | 9 | 8 | 6 | 4 | 4 | 6 | 9 | 9 | 8 | 6 | 5 | 3 | 3 | 7 | 9 | 10 | 9 | 7 | 8 | 8 | 8 | 8 | 8 | |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SSE 13 | SSE 17 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 12 | S 12 | SSE 12 | SSE 12 | SSE 14 | SSE 15 | SSE 16 | SSE 16 | — | — | — | SSE 13 | SSE 13 | SSE 13 | SSE 13 |
 kJ | 222 | 390 | 980 | 978 | 773 | 731 | 497 | 367 | 280 | 263 | 299 | 313 | 469 | 596 | 960 | 1656 | 1785 | — | — | — | 2507 | 1094 | 983 | 816 |
Swell 2 Height (m) Direction Period (s) | SSE 20 | SSE 19 | — | — | — | — | — | — | — | — | — | — | SSE 15 | — | — | — | — | — | — | — | — | — | SE 18 | SSE 17 |
| kJ | 39 | 139 | — | — | — | — | — | — | — | — | — | — | 196 | — | — | — | — | — | — | — | — | — | 155 | 351 |
Swell 3 Height (m) Direction Period (s) | — | SSE 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 381 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | WSW 3 | W 3 | WSW 3 | WSW 3 | WSW 3 | W 3 | W 3 | W 4 | WSW 4 | WSW 4 | WSW 4 | — | — | SSE 15 | SSE 14 | SSE 14 | SSE 13 | — | — | — |
| kJ | — | — | — | — | 1 | 6 | 3 | 3 | 3 | 8 | 8 | 10 | 15 | 17 | 8 | — | — | 1751 | 1773 | 1652 | 1249 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 9 | 9 | 9 | 9 | 210 | 236 | 235 | 235 | 210 | 9 | 9 | 224 | 224 | 235 | 293 | 235 | 529 | 336 | 293 | 274 | 274 | 235 | 235 | 235 |
Best forecast wave conditions in Rio Grande Do Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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