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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 Thursday 21 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
20.4° C
(Which is 1.1°C colder than average for this time of year)How big are the waves at Siriu today?
The current surf forecast for Siriu at 11PM is: 2.5m 14s primary swell from a South-southeast direction (forecast issued at 08:00pm May 21). The wind direction is predicted to be offshore and the swell rating is 4.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | - | - |
| Afternoon (21 May) | - | - |
| Evening (21 May) | 8ft (2.5m) | 14s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 10mm), heaviest on Fri night. Warm (max 20°C on Sun morning, min 12°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||||||||
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 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | 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 | S 11 | S 11 | SSE 11 | S 11 | |
2409 | 2267 | 2541 | 2638 | 2411 | 2137 | 1937 | 1910 | 1677 | 1422 | 1211 | 1025 | 903 | 742 | 599 | 505 | 486 | 411 | 320 | 303 | 286 | 286 | 460 | 657 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | cross-off | off | off | glassy | cross-on | cross | cross-off | off | off | cross-off | cross-off | glassy | glassy | glassy | glassy | glassy | cross-off | off | off | cross-off | cross-off | cross | |
High Tide | 10:39PM0.66m | 3:47AM0.59m | 11:24PM0.64m | 4:48AM0.57m | 11:54PM0.61m | 6:16AM0.53m | ||||||||||||||||||
Low Tide | 1:57AM0.57m | 1:26PM0.17m | 2:50AM0.55m | 2:35PM0.19m | 3:37AM0.49m | |||||||||||||||||||
 |  | | |  |  | | | |  | | | |  | | | | | | | |  | | | |
 | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — |
 | — | — | — | — | — | — | — | 5:29 | — | — | — | — | — | — | — | 5:29 | — | — | — | — | — | — | — | 5:28 |
— | — | — | — | — | — | — | — | — | 1 | 3 | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 13 | 13 | 13 | 12 | 14 | 17 | 17 | 16 | 15 | 14 | 13 | 13 | 15 | 16 | 16 | 15 | 16 | 15 | 15 | 15 | 17 | 20 | 20 |
10 | 10 | 10 | 11 | 10 | 12 | 15 | 15 | 16 | 15 | 13 | 12 | 12 | 15 | 16 | 16 | 16 | 16 | 14 | 14 | 14 | 16 | 18 | 17 | |
Swell 1 Height (m) Direction Period (s) | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | ESE 6 | ESE 6 | ESE 6 | ESE 7 | E 8 | SSE 6 |
 kJ | 2409 | 2267 | 2541 | 2638 | 2411 | 2137 | 1937 | 1910 | 1677 | 1422 | 1211 | 1025 | 903 | 742 | 599 | 505 | 486 | 411 | 136 | 122 | 114 | 147 | 135 | 77 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | E 6 | E 6 | E 6 | E 5 | ESE 5 | ESE 6 | ESE 6 | SSE 11 | SSE 11 | S 11 | S 11 | S 11 | E 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 75 | 75 | 49 | 36 | 28 | 39 | 88 | 320 | 303 | 286 | 286 | 274 | 115 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | E 10 | E 10 | E 9 | SE 6 | — | — | — | — | SSE 6 | SSE 6 | — | S 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 2 | 16 | — | — | — | — | 64 | 41 | — | 229 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | E 5 | — | — | — | — | — | ESE 6 | ESE 6 | ESE 6 | — | — | SW 3 | SSE 11 | S 11 |
| kJ | — | — | — | — | — | — | — | — | — | — | 31 | — | — | — | — | — | 90 | 159 | 220 | — | — | 2 | 460 | 657 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 13 | 38 | 21 | 0 | 0 | 0 | 0 | 0 | 10 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Santa Catarina - Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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