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Siriu Surf Forecast
/ Santa Catarina – Sul (37 surf breaks) /
Surf Forecasts:
Siriu surfForecast / Santa Catarina – Sul / Brazil
48hr Weather and Surf, issued 8 pm Saturday 30 May 2026 -03Forecast update in hr min s Forecast update imminent
Siriu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Siriu sea temperature is
18.6° C
(Which is 2.4°C colder than average for this time of year)How big are the waves at Siriu today (31 May):
- Morning surf: Morning surf (31 May, local time) - 3.5ft (1.1m), 10s period with SSE swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 3ft (0.9m), 9s period with SE swell.
- Evening surf: Evening surf (31 May, local time) - 3ft (0.9m), 9s period with SE swell.
The current surf forecast for Siriu at 4AM is: 1.5m 10s primary swell from a Southeast direction and 0.6m 6s secondary swell from a East direction (forecast issued at 08:00pm May 30). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 3.5ft (1.1m) | 10s |
| Afternoon (31 May) | 3ft (0.9m) | 9s |
| Evening (31 May) | 3ft (0.9m) | 9s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 19°C on Sun morning, min 14°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 30 | Sunday 31 | Monday 1 | Tuesday 2 | |||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SE 11 | SE 10 | SSE 10 | SE 10 | SSE 10 | SSE 10 | SSE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SSE 8 | SSE 8 | SE 8 | SE 8 | S 6 | SE 10 | SE 10 | S 8 | S 8 | |
652 | 510 | 353 | 432 | 320 | 231 | 226 | 123 | 123 | 128 | 101 | 84 | 118 | 95 | 93 | 111 | 101 | 55 | 69 | 91 | 80 | 64 | 157 | 191 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | cross-off | cross-off | glassy | glassy | cross-on | cross-on | cross | cross-off | glassy | glassy | glassy | cross-off | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | |
High Tide | 00:59AM0.61m | 2:10PM0.73m | 1:29AM0.62m | 2:44PM0.72m | 2:00AM0.63m | |||||||||||||||||||
Low Tide | 8:12PM0.31m | 7:50AM0.08m | 8:49PM0.34m | 8:23AM0.07m | 9:25PM0.36m | 9:01AM0.07m | ||||||||||||||||||
 | | | | |  | | |  | | | | |  | | |  | | | | | | | | |
 | — | — | — | — | 6:56 | — | — | — | — | — | — | — | 6:56 | — | — | — | — | — | — | — | 6:58 | — | — | — |
 | — | — | — | — | — | — | — | 5:25 | — | — | — | — | — | — | — | 5:25 | — | — | — | — | — | — | — | 5:25 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 16 | 16 | 16 | 16 | 18 | 19 | 19 | 17 | 17 | 16 | 16 | 15 | 16 | 18 | 17 | 17 | 16 | 16 | 15 | 14 | 15 | 18 | 18 |
18 | 16 | 16 | 16 | 16 | 19 | 19 | 19 | 17 | 17 | 16 | 17 | 15 | 16 | 17 | 16 | 15 | 14 | 14 | 13 | 13 | 14 | 16 | 16 | |
Swell 1 Height (m) Direction Period (s) | SE 11 | SE 10 | SSE 10 | SE 10 | SSE 10 | SSE 10 | SSE 10 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SSE 8 | SSE 8 | SE 8 | SE 8 | SSE 6 | S 7 | S 7 | S 8 | S 8 |
 kJ | 652 | 510 | 353 | 432 | 320 | 231 | 226 | 123 | 123 | 128 | 101 | 84 | 118 | 95 | 93 | 111 | 101 | 55 | 69 | 64 | 59 | 59 | 72 | 105 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 6 | E 6 | E 6 | E 6 | ESE 6 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 6 | E 6 | E 6 | ENE 6 | ENE 6 | SE 8 | SE 10 | SE 10 | SE 9 | SE 9 |
| kJ | 2 | 38 | 38 | 28 | 20 | 27 | 38 | 43 | 56 | 56 | 55 | 44 | 43 | 32 | 30 | 20 | 20 | 12 | 12 | 32 | 80 | 59 | 52 | 52 |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 6 | E 7 | E 6 | E 6 | S 10 | S 9 | S 9 | S 9 | S 8 | S 9 | S 8 | S 8 | SE 11 | SE 11 | SE 11 | — | SE 10 | ENE 6 | ENE 6 | ENE 6 | ENE 6 |
| kJ | — | — | — | 29 | 32 | 20 | 38 | 65 | 61 | 40 | 39 | 35 | 13 | 22 | 22 | 33 | 31 | 31 | — | 27 | 7 | 7 | 7 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 5 | S 4 | S 4 | S 5 | SSE 6 | S 6 | — | S 6 | S 8 | S 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 | 9 | 37 | 37 | 60 | 91 | — | 64 | 157 | 191 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 13 | 10 | 0 | 0 | 0 | 0 | 0 | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 10 | 10 |
Best forecast wave conditions in Santa Catarina - 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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