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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 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 1PM is: 1.5m 16s primary swell from a South-southeast direction (forecast issued at 08:00am May 20). An open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 4ft (1.2m) | 14s |
| Afternoon (20 May) | 5.5ft (1.7m) | 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 8°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 14 | SSE 15 | SSE 16 | SSE 16 | SSE 15 | SSE 14 | SSE 13 | 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 | SE 12 | |
411 | 596 | 849 | 1428 | 1591 | 2049 | 2167 | 2220 | 1274 | 998 | 852 | 1839 | 2999 | 1435 | 1247 | 1856 | 863 | 745 | 679 | 587 | 481 | 384 | 371 | 314 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | cross-off | 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-on | cross-on | on | 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 | 7:04AM-0.12m | 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 | — | — | — | — | — | — | — | 7:13 | — | — | — | — | — | — | — | 7:15 | — | — | — | — | — | — | 7:15 |
 | — | — | — | 5:36 | — | — | — | — | — | — | — | 5:36 | — | — | — | — | — | — | — | 5:35 | — | — | — | 5:35 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 8 | 8 | 12 | 14 | 14 | 12 | 11 | 11 | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 16 | 16 | 16 |
3 | 2 | 7 | 8 | 9 | 7 | 6 | 6 | 6 | 8 | 10 | 9 | 9 | 10 | 11 | 11 | 11 | 11 | 11 | 11 | 13 | 14 | 14 | 14 | |
Swell 1 Height (m) Direction Period (s) | SSE 13 | SSE 14 | SSE 15 | SSE 16 | SSE 16 | — | — | SSE 13 | 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 | SE 12 |
 kJ | 411 | 596 | 849 | 1428 | 1591 | — | — | 2220 | 1274 | 998 | 852 | 1839 | 2999 | 1435 | 1247 | 1856 | 863 | 745 | 679 | 587 | 481 | 384 | 371 | 314 |
Swell 2 Height (m) Direction Period (s) | SSE 15 | — | — | — | — | — | — | — | — | SE 18 | SSE 17 | SSE 16 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 196 | — | — | — | — | — | — | — | — | 82 | 504 | 717 | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 4 | WSW 4 | W 4 | WSW 4 | — | SSE 15 | SSE 14 | SSE 14 | — | — | — | — | SSE 15 | — | — | SSE 14 | — | — | — | — | — | — | — | — |
| kJ | 13 | 15 | 7 | 13 | — | 2049 | 2167 | 1628 | — | — | — | — | 1537 | — | — | 1008 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 210 | 224 | 515 | 293 | 293 | 336 | 303 | 336 | 336 | 9 | 9 | 235 | 235 | 235 | 235 | 235 | 235 | 235 | 420 | 544 | 514 | 240 | 286 | 320 |
Best forecast wave conditions in Rio Grande Do Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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