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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 am Thursday 21 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
15.1° C
(Which is 2.3°C colder than average for this time of year)How big are the waves at Cassino today?
The current surf forecast for Cassino at 3PM is: 2.0m 16s primary swell from a South-southeast direction and 1.1m 16s secondary swell from a Southeast direction (forecast issued at 08:00am May 21). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 6ft (1.9m) | 13s |
| Afternoon (21 May) | 6.5ft (2.0m) | 16s |
| Evening (21 May) | 8ft (2.5m) | 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 16°C on Fri night, min 11°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSE 13 | SSE 13 | SSE 13 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SSE 10 | |
1380 | 1193 | 953 | 2046 | 3265 | 2840 | 1247 | 2019 | 1777 | 1490 | 1336 | 1060 | 551 | 419 | 347 | 336 | 275 | 251 | 242 | 218 | 180 | 176 | 138 | 127 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | on | on | on | |
High Tide | 11:52AM0.25m | 5:44PM0.26m | 00:00AM0.69m | 12:41PM0.25m | 6:37PM0.23m | 00:57AM0.64m | 1:33PM0.26m | 7:49PM0.22m | 1:55AM0.57m | |||||||||||||||
Low Tide | 7:54AM-0.10m | 2:37PM0.14m | 7:21PM0.23m | 8:46AM-0.05m | 3:35PM0.14m | 8:04PM0.21m | 9:40AM0.02m | 4:40PM0.15m | 8:48PM0.22m | |||||||||||||||
 |  | | |  | | |  | | | |  | | | | | | | |  | | | | | |
 | 7:13 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — | 7:16 |
 | — | — | — | 5:36 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — | — | 5:35 | — | — | — | 5:34 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 11 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 |
6 | 6 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 11 | 13 | 14 | 14 | 14 | 14 | 13 | 13 | 14 | 14 | 15 | 15 | |
Swell 1 Height (m) Direction Period (s) | SSE 13 | SSE 13 | SSE 13 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | SSE 10 |
 kJ | 1380 | 1193 | 953 | 2046 | 3265 | 2840 | 1247 | 2019 | 1777 | 1490 | 1336 | 1060 | 551 | 419 | 347 | 336 | 275 | 251 | 242 | 218 | 180 | 176 | 138 | 127 |
Swell 2 Height (m) Direction Period (s) | — | SE 18 | SSE 17 | SE 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 10 | — | — | E 9 | E 9 | — |
| kJ | — | 83 | 504 | 625 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | 2 | 2 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 9 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 15 | SSE 14 | — | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | — | — | — | — | — | — | — | — | — | — | — | ENE 3 |
| kJ | — | — | — | — | 1712 | 1435 | — | 1008 | 965 | 936 | 679 | 669 | — | — | — | — | — | — | — | — | — | — | — | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 432 | 274 | 235 | 235 | 235 | 235 | 235 | 235 | 235 | 235 | 235 | 515 | 540 | 362 | 278 | 235 | 235 | 320 | 286 | 240 | 286 | 235 | 210 | 210 |
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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