Siriu Surf Forecast

/ Santa Catarina – Sul (37 surf breaks) /

Brazil (447 surf breaks) / Lat Long: (28.00° S 48.63° W)

Surf Forecasts:

Siriu surfForecast / Santa Catarina – Sul / Brazil

12 Day Weather and Surf, issued 2 am Friday 14 Nov 2025 -03

Forecast 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 20.6° C
(Which is 1.5°C colder than average for this time of year)

Best Forecast Surf Conditions for Siriu this week:

The surf forecast for Siriu over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Nov 14) at 6AM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.4m and 9s. Another secondary swell of 0.6m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Siriu in the next 12 days are 1.6m 16s and forecast to arrive on Thursday (Nov 20) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Monday (Nov 17) at 12PM.

Wave Type	Time (-03) & Date	Wave Height & Period
Next good surf (1 star+)	6AM (Fri 14th Nov)	2ft (0.6m) 7s
Best Surf	12AM (Mon 17th Nov)	6ft (1.9m) 7s
Most Powerful	3PM (Thu 20th Nov)	5ft (1.6m) 16s

Table - best surf conditions forecast for Siriu over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Mostly dry. Warm (max 26°C on Sun morning, min 20°C on Fri morning). Winds increasing (calm on Fri night, fresh winds from the NNE by Sun afternoon).									Days 3-6 Weather Summary Light rain (total 7mm), mostly falling on Mon morning. Warm (max 24°C on Wed morning, min 16°C on Mon night). Winds decreasing (fresh winds from the SW on Mon afternoon, calm by Wed morning).
	Friday 14			Saturday 15			Sunday 16			Monday 17			Tuesday 18			Wednesday 19			Thursday 20
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	1	0	1	0	0	0	0	0	3	0	0	3	3	2	2	2	1	1	1	0	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	ENE	S	S	S	S	S	NE	NE	NE	ENE	S	S	S	S	SSE	S	S	S	SSE	SSE	SSE
Period(s) (?)	7	10	9	9	10	10	6	6	7	7	7	8	10	10	10	11	10	11	16	16	14
Wave Graph (?)
kJ (?)	32	48	60	41	78	45	72	152	342	131	208	368	530	468	349	286	216	143	902	1278	731
Wind (km/h)	SSW	SSE	SW	NE	NE	N	NNE	NNE	N	SW	SW	SW	S	ESE	NNW	NE	SSE	W	N	NNE	N
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- on	glass	cross- on	cross- on	cross	cross- on	cross- on	cross- off	cross- off	cross- off	cross- off	glass	on	cross- off	glass	cross- on	glass	cross	cross- on	cross
High Tide / height (m)		12:12PM 0.61	10:28PM 0.55		12:02PM 0.60	11:16PM 0.62	11:56AM 0.62		11:55PM 0.67		12:07PM 0.63	12:31AM 0.71		12:26PM 0.64	1:05AM 0.74		12:48PM 0.64	1:38AM 0.75		1:11PM 0.64	2:11AM 0.75
Low Tide / height (m)		4:57PM 0.38		5:04AM 0.18	5:29PM 0.30		5:46AM 0.18	6:00PM 0.23		6:25AM 0.19		6:29PM 0.17	7:02AM 0.21		6:57PM 0.12	7:37AM 0.24		7:24PM 0.09	8:12AM 0.28		7:50PM 0.07

	Friday 14			Saturday 15			Sunday 16			Monday 17			Tuesday 18			Wednesday 19			Thursday 20
Sunrise	5:13	-	-	5:13	-	-	5:13	-	-	5:13	-	-	5:11	-	-	5:11	-	-	5:11	-	-
Sunset	-	6:43	-	-	6:44	-	-	6:45	-	-	6:45	-	-	6:45	-	-	6:46	-	-	6:47	-

Rain (mm)	-	-	-	-	-	-	-	-	-	4	1	2	-	-	-	-	-	-	-	-	-
Temp. °C	22	22	20	23	23	21	26	26	22	20	18	18	21	20	18	24	23	19	27	26	20
Feels °C (?)	22	22	23	23	22	21	24	24	21	19	14	16	19	19	18	24	22	20	23	21	18

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Quick surf report for Siriu:

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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.

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 12 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.