Prainha Surf Forecast

/ Santa Catarina – Norte (41 surf breaks) /

Brazil (447 surf breaks) / Lat Long: (26.23° S 48.50° W)

Surf Forecasts:

Prainha surfForecast / Santa Catarina – Norte / Brazil

12 Day Weather and Surf, issued 2 pm Tuesday 16 Sep 2025 -03

Forecast update in hr min s Forecast update imminent

Prainha surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Prainha sea temperature is 19.5° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Prainha this week:

The surf forecast for Prainha over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 16) at 9PM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 0.7m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Prainha in the next 12 days are 2.5m 8s and forecast to arrive on Tuesday (Sep 23) at 12AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 9s period and expected on Monday (Sep 22) at 3PM.

Wave Type	Time (-03) & Date	Wave Height & Period
Next good surf (1 star+)	9PM (Tue 16th Sep)	4ft (1.2m) 13s
Best Surf	3AM (Tue 23rd Sep)	7ft (2.2m) 8s
Most Powerful	12AM (Tue 23rd Sep)	8ft (2.5m) 8s

Table - best surf conditions forecast for Prainha 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 20°C on Tue afternoon, min 17°C on Thu night). Wind will be generally light.											Days 3-6 Weather Summary Heavy rain (total 56mm), heaviest during Mon morning. Warm (max 25°C on Sat morning, min 19°C on Fri afternoon). Wind will be generally light.
	Tue 16		Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	1	3	2	2	3	3	1	0	1	0	0	0	0	2	1	0	1	0	0	3	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	E	E	E	E	E	E	E	E	E	ESE	SSE	SSE
Period(s) (?)	14	13	13	12	11	11	11	10	9	9	9	8	9	9	9	8	9	9	9	8	8
Wave Graph (?)
kJ (?)	522	506	451	461	531	496	496	314	135	119	148	142	194	194	153	138	152	155	270	844	621
Wind (km/h)	ENE	SSW	W	SSE	SW	SW	E	N	NW	ESE	NNW	NNW	ENE	N	NW	ESE	WNW	NNE	SSE	WSW	SW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	on	cross- off	glass	cross	cross- off	glass	cross- on	cross- on	glass	cross- on	cross	cross	on	glass	cross- off	cross- on	cross- off	cross- on	cross	off	cross- off
High Tide / height (m)		11:17PM 0.86		12:35PM 1.14	12:10AM 1.02		1:08PM 1.22	12:52AM 1.17		1:39PM 1.28	1:29AM 1.29		2:09PM 1.32	2:03AM 1.37		2:37PM 1.32	2:36AM 1.40		3:05PM 1.30		3:08AM 1.39
Low Tide / height (m)		7:25PM 0.53	6:56AM 0.24		7:44PM 0.49	7:22AM 0.14		7:57PM 0.45	7:42AM 0.08		8:00PM 0.40	7:56AM 0.05		7:58PM 0.33	8:09AM 0.03		8:05PM 0.26	8:24AM 0.05		8:22PM 0.19	8:44AM 0.08

	Tue 16		Wednesday 17			Thursday 18			Friday 19			Saturday 20			Sunday 21			Monday 22
Sunrise	-	-	6:09	-	-	6:07	-	-	6:07	-	-	6:05	-	-	6:05	-	-	6:03	-	-	6:03
Sunset	6:07	-	-	6:07	-	-	6:07	-	-	6:07	-	-	6:08	-	-	6:08	-	-	6:08	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	2	2	1	11	40	19	-	-
Temp. °C	20	20	20	20	19	20	20	20	19	20	23	25	23	21	21	21	21	21	18	17	17
Feels °C (?)	19	21	22	20	19	21	19	20	19	22	24	25	23	23	22	22	24	24	15	12	13

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 - Norte

Wind Update Continuing clean conditions at Prainha (calm at Itapoa 22 km from Prainha). A 1.5m groundswell from the ESE
3 hours 14 minutes ago Prainha

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22 km away, 3 h 14 min ago

0 km/h

0.0

19.5

Air / Water (°C)

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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 Prainha 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 Prainha Surf forecast

The above surf forecast table for Prainha provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Prainha can be found by selecting the local surf guide option on the grey menu. Our Prainha 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 (Prainha) 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 Prainha 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.

Prainha is 14 km (9 miles) from Sao Francisco do Sul. If you plan a holiday in Santa Catarina - Norte, look for hotels and other accommodation in Sao Francisco do Sul. Sao Francisco do Sul has rooms for a wide range of budgets as well as car hire and transport links.