Surf Forecasts:
How big are the waves at Siriu today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 3ft (0.9m), 10s period with SSE swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 3ft (0.9m), 9s period with SSE swell.
- Evening surf: Evening surf (18 Sep, local time) - 2.5ft (0.8m), 9s period with SSE swell.
The current surf forecast for Siriu at 6AM is: 1.0m 10s primary swell from a South-southeast direction and 0.4m 10s secondary swell from a East direction, 0.5m 4s secondary swell from a Northeast direction (forecast issued at 02:00am September 18). The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 3ft (0.9m) | 10s |
| Afternoon (18 Sep) | 3ft (0.9m) | 9s |
| Evening (18 Sep) | 2.5ft (0.8m) | 9s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 41mm), heaviest during Sat afternoon. Warm (max 23°C on Sun afternoon, min 18°C on Fri morning). Winds decreasing (fresh winds from the NNE on Sat night, calm by Sun night). | ||||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | ENE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 10 | NE 10 | NE 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 306 | 255 | 209 | 169 | 154 | 147 | 115 | 113 | 113 | 88 | 186 | 303 | 259 | 191 | 222 | 290 | 557 | 785 | 925 | 909 | 950 | 1111 | 1954 | 1864 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross |
High Tide | 5:37AM0.51m | 12:07PM0.54m | 3:55PM0.52m | 11:52PM0.30m | 12:05PM0.59m | 11:20PM0.37m | 12:15PM0.64m | |||||||||||||||||
Low Tide | 8:21AM0.46m | 2:52PM0.52m | 9:45PM0.29m | 1:59AM0.29m | 9:41PM0.37m | 3:45AM0.24m | 5:46PM0.40m | |||||||||||||||||
 | |  |  |  | | |  |  | | |  | | |  |  | | | | | | | | | |
 | — | — | 6:09 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — |
 | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:08 | — | — | — | — | — | — | — | 6:08 | — |
mm | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 2 | 3 | 7 | 7 | 5 | 3 | 4 | 1 | — | — | — | — |
Temp °C | 15 | 15 | 15 | 18 | 21 | 21 | 19 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 19 | 19 | 20 | 23 | 20 | 20 |
Feels °C | 13 | 13 | 13 | 16 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 13 | 14 | 17 | 18 | 19 | 22 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | E 6 | SSE 9 | ENE 7 | ENE 7 | S 9 | SSE 9 | SSE 8 | SSE 12 | SSE 11 | SSE 11 | S 12 | S 12 | S 12 | ENE 10 | ENE 10 |
| kJ | 306 | 255 | 209 | 169 | 154 | 147 | 115 | 113 | 113 | 66 | 84 | 191 | 181 | 39 | 25 | 14 | 49 | 25 | 25 | 11 | 11 | 11 | 1163 | 1003 |
Swell 2 Height (m) Direction Period (s) | E 7 | E 7 | E 10 | E 10 | E 10 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | SSE 9 | SSE 13 | S 9 | S 9 | SSE 13 | SSE 12 | SSE 12 | — | — | S 8 | — | — | — | S 11 | S 11 |
| kJ | 9 | 9 | 33 | 31 | 30 | 29 | 28 | 26 | 14 | 88 | 17 | 57 | 40 | 32 | 31 | 29 | — | — | 1 | — | — | — | 10 | 9 |
Swell 3 Height (m) Direction Period (s) | ESE 11 | E 11 | ENE 4 | ENE 4 | — | — | — | — | SE 14 | ESE 8 | — | SSE 13 | SSE 13 | SSE 9 | SSE 9 | — | — | — | — | — | — | — | — | — |
| kJ | 11 | 9 | 3 | 3 | — | — | — | — | 7 | 14 | — | 17 | 31 | 15 | 8 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 3 | N 3 | NE 4 | NE 4 | ENE 4 | ENE 4 | ENE 5 | ENE 5 | ENE 6 | NE 6 | ENE 7 | NE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 10 | NE 10 | NE 10 |
| kJ | 4 | 5 | 7 | 8 | 7 | 13 | 16 | 37 | 70 | 59 | 186 | 303 | 259 | 191 | 222 | 290 | 557 | 785 | 925 | 909 | 950 | 1111 | 1954 | 1864 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 9 | 26 | 57 | 20 | 9 | 20 | 16 | 16 | 16 | 16 | 16 | 502 | 501 | 269 | 236 | 146 | 39 | 101 | 101 | 91 | 33 |
Best forecast wave conditions in Santa Catarina - Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Siriu surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest