Surf Forecasts:
Siriu surf forecast from 10 Nov 2026:
- Best quality surf: Tuesday 24 Nov, 9AM (local time) - 5.5ft (1.7m), 11s period, ESE swell with cross-offshore winds.
- Most powerful swell: Tuesday 24 Nov, 9PM (local time) - 8ft (2.5m), 8s period, ESE swell with 887 kJ wave energy.
- Next surfable swell (1★+): Friday 13 Nov, 12AM (local time) - 5ft (1.5m), 8s period with ENE swell.
Best Forecast Surf Conditions for Siriu this week:
The surf forecast for Siriu over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Nov 13) at 12AM. The primary swell is predicted to be 1.5m and 8s period with a secondary swell of 0.3m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Siriu in the next 16 days are 2.5m 8s and forecast to arrive on Tuesday (Nov 24) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Nov 16) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 13th Nov) | 5ft (1.5m) 8s |
| Best Surf | 9AM (Tue 24th Nov) | 5.5ft (1.7m) 11s |
| Most Powerful | 9PM (Tue 24th Nov) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Siriu over the next 16 days.
Short Range ForecastLight rain (total 6mm), mostly falling on Thu afternoon. Warm (max 25°C on Thu morning, min 17°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 27mm), heaviest during Sat night. Warm (max 25°C on Sat morning, min 18°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 10 | Wednesday 11 | Thursday 12 | Friday 13 | Saturday 14 | Sunday 15 | Monday 16 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSE 8 | SE 10 | ENE 6 | NE 7 | ENE 7 | NE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 7 | E 7 | SSE 14 | SSE 13 | SSE 12 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 134 | 76 | 143 | 303 | 168 | 105 | 186 | 280 | 280 | 232 | 187 | 192 | 164 | 239 | 142 | 192 | 218 | 183 | 92 | 93 | 55 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-on | cross | cross-on | cross-on | glassy | glassy | cross-on | cross | cross-on | cross-on | cross | cross-off | cross | cross-off | cross-off | cross | off |
High Tide | 1:29PM0.65m | 2:31AM0.74m | 1:55PM0.64m | 3:06AM0.70m | 2:24PM0.63m | 3:43AM0.66m | 2:56PM0.62m | 4:25AM0.61m | 3:34PM0.60m | 5:17AM0.56m | 4:21PM0.57m | 6:42AM0.53m | 5:24PM0.54m | ||||||||
Low Tide | 8:09PM0.07m | 9:08AM0.36m | 8:33PM0.08m | 9:36AM0.40m | 9:02PM0.10m | 10:12AM0.44m | 9:47PM0.14m | 11:25AM0.47m | 11:13PM0.19m | 8:33AM0.50m | 12:50PM0.47m | 00:48AM0.21m | 8:01AM0.53m | 2:07PM0.45m | 2:06AM0.20m | ||||||
 |  |  |  | |  | |  | | | |  | | | | | | | | | | |
 | 5:16 | — | — | 5:16 | — | — | 5:15 | — | — | 5:15 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — |
 | — | 6:39 | — | — | 6:40 | — | — | 6:40 | — | — | 6:42 | — | — | 6:43 | — | — | 6:44 | — | — | 6:45 | — |
mm | — | — | 1 | 1 | — | — | — | 3 | 1 | — | — | — | — | 3 | 24 | — | — | — | — | — | — |
Temp °C | 21 | 21 | 19 | 21 | 22 | 20 | 25 | 24 | 21 | 23 | 23 | 22 | 25 | 24 | 21 | 24 | 23 | 20 | 24 | 23 | 20 |
Feels °C | 17 | 17 | 17 | 19 | 20 | 20 | 24 | 24 | 23 | 25 | 25 | 26 | 24 | 23 | 24 | 23 | 21 | 19 | 21 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SSE 8 | ENE 5 | ENE 7 | SE 8 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 |
| kJ | 134 | 70 | 62 | 206 | 24 | 88 | 186 | 280 | 280 | 232 | 187 | 192 | 164 | 183 | 142 | 127 | 102 | 113 | 92 | 93 | 55 |
Swell 2 Height (m) Direction Period (s) | SE 18 | SE 10 | SSE 8 | SE 8 | S 8 | NE 7 | SE 11 | SE 11 | SE 10 | SE 10 | SE 9 | S 11 | S 11 | S 11 | SSE 16 | SSE 14 | SSE 13 | SSE 12 | S 11 | S 11 | S 10 |
| kJ | 12 | 76 | 88 | 35 | 13 | 50 | 19 | 18 | 15 | 4 | 3 | 10 | 10 | 9 | 102 | 192 | 218 | 183 | 86 | 83 | 46 |
Swell 3 Height (m) Direction Period (s) | NE 8 | SE 16 | SE 15 | S 9 | S 15 | SE 8 | S 13 | S 13 | S 12 | S 12 | S 12 | SE 9 | S 8 | S 19 | S 10 | — | — | SSE 7 | SE 7 | SE 7 | SE 7 |
| kJ | 3 | 10 | 8 | 27 | 4 | 9 | 4 | 3 | 3 | 3 | 3 | 3 | 1 | 7 | 2 | — | — | 5 | 14 | 12 | 11 |
Wind waves Height (m) Direction Period (s) | ENE 5 | ENE 5 | ENE 6 | NE 7 | ENE 7 | NE 7 | NE 7 | NE 8 | — | — | S 3 | — | — | E 7 | — | — | — | SW 3 | S 3 | — | — |
| kJ | 35 | 34 | 143 | 303 | 168 | 105 | 65 | 241 | — | — | 1 | — | — | 239 | — | — | — | 2 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 9 | 256 | 6 | 9 | 16 | 9 | 9 | 16 | 0 | 0 | 16 | 6 | 9 | 16 | 9 | 0 | 38 | 0 | 0 | 38 | 0 |
Best forecast wave conditions in Santa Catarina - Sul | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Information about the Siriu Surf forecast
The above surf forecast table for Siriu provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Siriu can be found by selecting the local surf guide option on the grey menu. Our Siriu surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Siriu) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Siriu may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Siriu is 27 km (17 miles) from Imbituba. If you plan a holiday in Santa Catarina - Sul, look for hotels and other accommodation in Imbituba. Imbituba has rooms for a wide range of budgets as well as car hire and transport links.
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