Balneario Sao Jose Surf Break

Lat Long: 24.09° S 46.60° W

Balneario Sao Jose Surf Forecast and Surf Report

Issued: 8 pm 14 Aug 2026 (local time)

Forecast update in  hr  min

Today's Balneario Sao Jose sea temperature is
20.8° C
1.5° 

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


Balneario Sao Jose surf forecast from 15 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 9PM (local time) - 7.5ft (2.3m), 8s period, E swell with glassy winds.
  • Most powerful swell: Saturday 15 Aug, 9AM (local time) - 6ft (1.8m), 13s period, SSE swell with 1,103 kJ wave energy.
  • Next surfable swell (1★+): Sunday 16 Aug, 12AM (local time) - 5.5ft (1.7m), 8s period with ESE swell.

Best Forecast Surf Conditions for Balneario Sao Jose this week:

The surf forecast for Balneario Sao Jose over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 16) at 12AM. The primary swell is predicted to be 1.7m and 8s period with a secondary swell of 1.0m and 12s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Balneario Sao Jose in the next 16 days are 1.8m 13s and forecast to arrive on Saturday (Aug 15) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sun 16th Aug)5.5ft (1.7m) 8s
Best Surf 9PM (Sun 16th Aug)7.5ft (2.3m) 8s
Most Powerful 9AM (Sat 15th Aug)6ft (1.8m) 13s

Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.


The Lowdown

Alright, let’s get into it.

To start, the surfing this week is a bit of a mixed bag. We’ve got a pulse of energy coming through, but it’s not all gonna be clean. The water is running a touch warmer than usual for this time of year, which is always nice for the dawn patrol.

Our first real call is for Friday afternoon, the 14th, down at Balneario Sao Jose. It’s a beach and pier set-up, and it’s going to be the standout of the first stretch. We’re looking at chest to head-high surf, around 5ft, with that swell coming from the SSE. What makes it special is the wind – it’s glassy, dead calm, and the period is a solid 13 seconds, so there’s some proper grunt behind it. The water is a pleasant 69°F, and the overall energy is moderate at 696. This is the one to get out for if you can. The conditions are gonna be super clean, making it a really fun option.

Saturday, the 15th, is a step down. The swell bumps up a bit to 6ft in the morning, but the wind swings around to a light cross-onshore, which is going to put a few bumps on the face. It’s still surfable, but it’s not going to be as crisp as Friday. The afternoon drops off a touch to 4ft.

Sunday, the 16th, sees the swell period shorten right down to 8 seconds. That’s a sign of shorter-period windswell. The size is still there, around 6ft to 6ft, but with onshore winds, the quality drops off. The morning is a bit cleaner but has some cross-shore wind. The afternoon looks choppier. This is more of a fight than a fun session.

Monday, the 17th, the wind does us a favor and goes dead calm in the morning. There’s still 6ft of fun swell from the ESE, with a 9-second period. It’s glassy and clean, but a little less organized than Friday. By the afternoon it gets a bit messy.

From Tuesday the 18th through to the end of the week, things get pretty small and weak. We’ve got a handful of days with waves under 3ft. The energy drops right off, with numbers down in the 58-108 range, which is pretty weak. There are a couple of mornings with glassy conditions on the 18th and 19th, but the waves are tiny, in the 2ft to 4ft range. It’s really a time to dust off the longboard or find something else to do. There’s a decent gap of a few days here where the surf is pretty lackluster.

Looking into the following week, there is a pulse of energy expected around the 24th and 25th. It’s promising but a long way out, so keep an eye on it. The 24th of August looks like it could be solid with 8ft of S swell at a longer 13-second period, and the energy numbers are strong at 3228. The wind is light, too. Then on the 25th, the morning looks particularly interesting. It’s still a week and a half away, so treat it as a “could be good” rather than a certainty. There’s also a glimmer of hope on the 29th, with a clean morning and a bit of long-period groundswell at 13 seconds. But again, that’s a long way off.

In the meantime, keep your head on a swivel for those clean windows when they pop up.

Rusty

Short Range Forecast

Light rain (total 2mm), mostly falling on Fri night. Warm (max 25°C on Mon morning, min 18°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 33°C on Wed morning, min 21°C on Wed night). Wind will be generally light.

Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
3
2
3
2
0
4
2
1
3
2
0
1
1
0
0
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.8
SSE
14
1.8
SSE
13
1.2
SSE
12
1.7
ESE
8
1.8
ESE
8
1.7
ESE
8
2.2
E
8
1.6
ESE
9
1.4
ESE
8
1.8
E
8
1.2
ESE
8
1.1
ESE
8
0.9
ESE
8
0.8
E
8
0.8
E
8
1
E
8
0.7
E
7
0.7
E
7
0.8
ESE
7
Wave Graph
Metric surfscale
Energy kJ
1122
1103
439
327
395
345
666
371
250
428
212
171
104
72
72
110
52
48
71
Wind (km/h)
5
E
10
SW
10
SSE
5
NE
5
ENE
10
ESE
0
N
5
S
5
SE
5
N
5
NE
5
ESE
10
N
5
NNW
5
SSE
10
WSW
5
S
10
ENE
10
W
Wind State
glassy
cross
on
cross-off
cross
cross-on
glassy
glassy
cross-on
glassy
glassy
cross-on
cross-off
glassy
on
cross
glassy
cross
cross-off
High Tide
3:38AM1.38m
4:14PM1.21m
4:11AM1.35m
4:37PM1.16m
4:44AM1.27m
5:00PM1.10m
5:19AM1.16m
5:24PM1.03m
5:59AM1.03m
5:50PM0.95m
6:51AM0.89m
6:25PM0.85m
Low Tide
9:45PM0.38m
10:10AM0.09m
9:53PM0.35m
10:26AM0.20m
10:08PM0.32m
10:39AM0.32m
10:29PM0.32m
10:52AM0.43m
10:54PM0.35m
11:03AM0.55m
11:23PM0.42m
11:06AM0.67m
11:57PM0.52m
thunderstorm
rain showers
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:31
6:31
6:30
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:49
5:49
5:49
5:50
5:50
5:51
 mm
1
1
Temp °C
21
20
22
19
23
23
20
25
24
23
28
27
27
33
30
28
28
29
26
Feels °C
24
21
24
20
24
24
23
27
26
25
29
29
27
33
30
28
30
30
26
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Balneario Sao Jose Surf forecast

The above surf forecast table for Balneario Sao Jose provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Balneario Sao Jose can be found by selecting the local surf guide option on the grey menu. Our Balneario Sao Jose 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 (Balneario Sao Jose) 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 Balneario Sao Jose 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.

Balneario Sao Jose is 3 km (2 miles) from the city of Mongagua. If you plan a holiday in São Paulo, look for hotels and other accommodation in Mongagua. Mongagua has rooms for a wide range of budgets as well as car hire and transport links.

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