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

48hr Weather and Surf, issued 8 am Monday 15 Sep 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 18.5° C
(Which is slightly cooler than normal)

How big are the waves at Siriu today?

The current surf forecast for Siriu at 3PM is: 1.9m 14s primary swell from a Southeast direction and 0.9m 4s secondary swell from a North-northeast direction (forecast issued at 08:00am September 15). The wind direction is predicted to be cross-onshore.

Time (-03) & Date	Wave Height	Wave Period
Morning (15 Sep)	7ft (2.1m)	14s
Afternoon (15 Sep)	6ft (1.9m)	14s
Evening (15 Sep)	6.5ft (2.0m)	13s

Table - waves today at Siriu. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Monday 15						Tuesday 16								Wednesday 17								Thu 18
	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM
Rating (10 max)	2	2	0	0	1	2	4	2	3	3	3	3	3	4	4	4	4	3	3	1	2	3	3	3
Swell Height Map See all maps
Wave Height (m) & direction (?)	ESE	ESE	ESE	SE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	E	E	E
Period(s) (?)	14	14	14	14	14	13	13	13	13	13	13	13	13	13	13	13	13	13	13	9	9	8	8	9
Wave Graph (?)
Energy (?)	1518	1560	1650	1398	1293	1450	1303	1262	1313	1330	1312	1294	1243	1280	1093	1194	1267	1237	1252	710	1020	1157	646	604
Wind (km/h)	N	NNE	NNE	NE	NNE	NNE	NNW	N	N	N	ESE	SSE	S	SSW	SW	SSW	SSW	SSE	E	E	ENE	ENE	NNE	NW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	cross	cross- on	cross- on	cross- on	cross	glass	cross	cross	cross	on	cross	cross	cross- off	cross- off	cross- off	cross- off	cross- on	on	on	on	cross- on	glass	cross- off
High Tide / height (m)				12:32PM 0.72				12:19AM 0.36				1:02PM 0.75				12:11AM 0.43				1:24PM 0.75			11:51PM 0.52
Low Tide / height (m)	3:02AM 0.26						9:31PM 0.31		4:29AM 0.19						9:03PM 0.39		5:28AM 0.11					6:48PM 0.38

	Monday 15						Tuesday 16								Wednesday 17								Thu 18
Sunrise	-	6:11	-	-	-	-	-	-	-	6:11	-	-	-	-	-	-	-	6:09	-	-	-	-	-	-
Sunset	-	-	-	-	6:07	-	-	-	-	-	-	-	6:07	-	-	-	-	-	-	-	6:07	-	-	-

Rain (mm)	-	-	-	-	-	3	5	4	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	15	18	22	22	18	17	17	17	17	19	22	21	19	18	18	18	17	19	21	20	19	18	18	17
Feels °C (?)	12	14	18	18	16	14	18	15	16	19	23	21	19	18	18	18	18	20	22	20	19	18	19	18

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

Recent Eyeball Surf Reports for Santa Catarina - Sul

Wind Update The wind is still cross-off at Siriu (moderate winds from the NNW at Florianopolis Airport 38 km from Siriu). 2.0m 14s groundswell from the SE with a 1.1m 4s local chop from the NE. 2 swells combining so expect closeout sets.
1 hour 48 minutes ago Siriu

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38 km away, 1 h 48 min ago

28 km/h

NNW

0.0

18.5

Air / Water (°C)

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