Praia do Guaeca Surf Forecast

/ São Paulo (84 surf breaks) /

Brazil (447 surf breaks) / Lat Long: (23.82° S 45.46° W)

Surf Forecasts:

Praia do Guaeca surfForecast / São Paulo / Brazil

12 Day Weather and Surf, issued 8 pm Thursday 02 Oct 2025 -03

Forecast update in hr min s Forecast update imminent

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

Today's Praia do Guaeca sea temperature is 21.3° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Praia do Guaeca this week:

The surf forecast for Praia do Guaeca over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Oct 03) at 6AM. The primary swell is predicted to be 1.5m and 8s period with a secondary swell of 0.1m and 6s. Another secondary swell of 0.1m and 15s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Praia do Guaeca in the next 12 days are 1.9m 15s and forecast to arrive on Wednesday (Oct 08) at 12PM. Winds are predicted to be onshore at the time the swell arrives.

Wave Type	Time (-03) & Date	Wave Height & Period
Next good surf (1 star+)	6AM (Fri 3rd Oct)	5ft (1.5m) 8s
Best Surf	3AM (Sat 4th Oct)	8ft (2.5m) 8s
Most Powerful	12PM (Wed 8th Oct)	6ft (1.9m) 15s

Table - best surf conditions forecast for Praia do Guaeca 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 27°C on Sun morning, min 19°C on Fri night). Wind will be generally light.										Days 3-6 Weather Summary Heavy rain (total 23mm), heaviest during Wed afternoon. Warm (max 32°C on Mon morning, min 16°C on Wed afternoon). Wind will be generally light.
		Friday 03			Saturday 04			Sunday 05			Monday 06			Tuesday 07			Wednesday 08			Thu 09
	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM
Rating (10 max)	1	2	0	3	2	3	1	2	1	2	2	1	0	0	0	0	3	2	2	2	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	E	E	E	E	ESE	E	E	ESE	ESE	E	ESE	E	E	E	S	S	S	S	S	S	SSE
Period(s) (?)	7	8	8	8	9	8	8	9	9	9	9	9	9	9	8	8	14	14	12	12	13
Wave Graph (?)
kJ (?)	209	413	346	759	586	559	559	528	484	601	564	486	422	405	597	507	1175	1411	668	472	1193
Wind (km/h)	NE	ENE	ENE	NE	WSW	SSE	NE	E	ENE	NE	NNE	E	W	SW	SSW	SSE	SSE	SSE	ENE	E	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross	cross	glass	glass	glass	cross- off	glass	cross	cross- off	cross- off	cross	cross- off	cross	cross- on	on	on	on	cross	cross	cross
High Tide / height (m)	11:12PM 0.89		12:09PM 1.05	11:48PM 1.01		12:44PM 1.10	12:28AM 1.11		1:24PM 1.12	1:14AM 1.17		2:01PM 1.12	2:01AM 1.20		2:31PM 1.09	2:42AM 1.21		2:58PM 1.03		3:18AM 1.17	3:21PM 0.96
Low Tide / height (m)		5:16AM 0.03	5:49PM 0.30		5:57AM -0.05		6:30PM 0.24	6:44AM -0.10		7:08PM 0.18	7:26AM -0.09		7:41PM 0.14	8:02AM -0.03		8:08PM 0.12	8:34AM 0.09		8:31PM 0.12	9:04AM 0.27

		Friday 03			Saturday 04			Sunday 05			Monday 06			Tuesday 07			Wednesday 08			Thu 09
Sunrise	-	5:39	-	-	5:39	-	-	5:37	-	-	5:37	-	-	5:35	-	-	5:35	-	-	5:33	-
Sunset	-	-	6:00	-	-	6:01	-	-	6:01	-	-	6:01	-	-	6:02	-	-	6:02	-	-	6:04

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	3	4	4	5	2	5	3	-	1
Temp. °C	20	24	23	20	25	24	21	27	27	23	32	31	26	20	19	18	18	17	17	19	19
Feels °C (?)	20	24	22	20	26	27	22	29	28	23	33	30	24	19	18	17	18	16	17	18	17

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 São Paulo

Wind Update The wind is still cross-on at Praia do Guaeca (light winds from the ESE at Sao Jose Dos Campos (Aero) 79 km from Praia do Guaeca). 1.6m 7s swell from the ESE with a 0.5m 10s swell from the SE. 2 swells combining so expect closeout sets.
2 hours 26 minutes ago Praia do Guaeca

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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 Praia do Guaeca 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 Praia do Guaeca Surf forecast

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

Praia do Guaeca is 9 km (6 miles) from Sao Sebastiao. If you plan a holiday in São Paulo, look for hotels and other accommodation in Sao Sebastiao. Sao Sebastiao has rooms for a wide range of budgets as well as car hire and transport links.