Balneario Sao Jose Surf Break

Lat Long: 24.09° S 46.60° W

Balneario Sao Jose Surf Forecast and Surf Report

Issued: 2 pm 26 Aug 2026 (local time)

Forecast update in  hr  min

Today's Balneario Sao Jose sea temperature is
20.9°C
1.2° 

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 27 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 12AM (local time) - 6ft (1.9m), 15s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Thursday 27 Aug, 12AM (local time) - 6ft (1.9m), 15s period, SSE swell with 1,567 kJ wave energy.
  • Next surfable swell (1★+): Thursday 27 Aug, 12AM (local time) - 6ft (1.9m), 15s period with SSE 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 Thursday (Aug 27) at 12AM. The primary swell is predicted to be 1.9m and 15s period with a secondary swell of 0.8m and 5s. 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 1.9m 15s and forecast to arrive on Thursday (Aug 27) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Thu 27th Aug)6ft (1.9m) 15s
Best Surf12AM (Thu 27th Aug)6ft (1.9m) 15s
Most Powerful12AM (Thu 27th Aug)6ft (1.9m) 15s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s coming up for Balneario Sao Jose.

The first surf worth paddling out for hits on Wednesday, the 26th of August. We’ve got a solid pulse of long-period groundswell from the SSE, kicking in at about 6ft with a 15-second period. That’s a lot of water moving, and the energy reading is a powerful 1547—that’s a strong, meaty system. The water’s sitting at 70°, which is a touch warmer than usual for this time of year. The wind is glassy, and this is a beach/pier setup, so that long period could make it a bit straight and quick, but for experienced surfers, this is a real standout. The SE swell direction is right on the money for this spot.

The real gems are the Wednesday afternoon and the Thursday morning. Thursday morning the 27th is glassy again, with about 6ft of SSE swell at 14 seconds and energy at 1218. It’s going to be clean, well-shaped, and powerful. If you’ve got the skill, these are the sessions to circle. Thursday afternoon the wind switches to a cross-on breeze and the swell drops a touch, so the vibe fades.

Friday the 28th morning offers a smaller, shorter-period E swell at about 6ft with 8 seconds, and a cross-off wind keeps it clean. The energy is moderate at 759. It’s a good option if you missed the big days, but it’s not the standout.

From Saturday the 29th onward, the surf gets smaller and the conditions get ordinary. We’ve got a run of days with weaker energy, cross-on winds, and dropping swell heights. By Sunday the 30th it’s below 3ft and choppy. There’s a gap of a few days where the surf is poor, with energy readings dropping below 200.

We get a little flicker of hope on Tuesday the 1st of September—morning glassy winds and a 4ft SSE swell, but the period is short at 6 seconds and the energy is only 252. It’s surfable but nothing to write home about.

After that, the forecast turns messy. From the 2nd of September through to the 10th, the wind is mostly cross-on or onshore, and the swell is small and weak. A few sessions show glassy conditions on the 7th and 8th of September, but the swell is tiny—about 1ft and 2ft—with long periods that will just make for weak, slow waves. The energy is low, all under 250. Not really worth suiting up for.

So, to wrap it up: the best on offer is that Wednesday afternoon and Thursday morning window at the end of August. Big, clean, powerful SSE groundswell. After that, it’s a long stretch of small, messy, or blown-out conditions. Keep your eyes on the charts, but don’t get your hopes up for the second week.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 37°C on Sat morning, min 21°C on Wed afternoon). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 10mm), heaviest on Tue morning. Warm (max 38°C on Sat afternoon, min 20°C on Sat night). Wind will be generally light.

Wed
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
Monday
31
Tuesday
1
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
4
4
4
1
3
3
1
2
1
1
0
0
0
1
1
0
0
2
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.9
SSE
15
1.9
SSE
15
1.7
SSE
14
1.5
SSE
14
1.2
SSE
13
1.8
E
8
1.4
E
8
1.3
E
7
1.1
ESE
8
1
E
8
0.9
ESE
8
0.7
E
8
0.8
ESE
9
0.7
E
9
0.6
E
8
0.9
SSE
7
0.8
SSE
8
0.8
E
10
0.8
ESE
10
1.2
SSE
6
Wave Graph
Metric surfscale
Energy kJ
1540
1567
1158
874
461
358
227
176
151
134
109
69
106
76
50
84
81
127
136
107
Wind (km/h)
5
SE
10
NNE
0
ESE
15
E
10
NE
10
NE
5
ESE
10
NNE
10
N
5
NW
25
SW
15
SW
15
SSW
5
N
5
S
10
S
15
WSW
5
NNE
5
WSW
15
SSW
Wind State
glassy
cross-off
glassy
cross-on
cross-off
cross-off
cross-on
cross-off
cross-off
cross-off
cross
cross-on
cross-on
glassy
glassy
cross-on
cross
glassy
cross
cross-on
High Tide
1:56AM1.30m
2:38PM1.34m
2:25AM1.39m
3:02PM1.36m
2:55AM1.44m
3:29PM1.36m
3:28AM1.45m
3:57PM1.32m
4:04AM1.42m
4:28PM1.24m
4:42AM1.33m
5:00PM1.13m
Low Tide
8:23PM0.28m
8:34AM-0.05m
8:50PM0.24m
9:04AM-0.06m
9:15PM0.23m
9:33AM-0.03m
9:38PM0.23m
10:00AM0.04m
9:56PM0.25m
10:24AM0.16m
10:09PM0.27m
10:40AM0.31m
10:20PM0.31m
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
mod rain
heavy rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:20
6:20
6:18
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:52
5:52
5:53
5:53
5:53
5:54
 mm
10
20
7
Temp °C
22
21
25
24
22
29
27
28
37
38
31
24
22
23
26
22
21
22
21
19
Feels °C
24
22
25
24
24
30
29
26
35
37
31
24
23
26
28
24
24
25
24
19
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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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