Balneario Sao Jose Surf Break

Lat Long: 24.09° S 46.60° W

Balneario Sao Jose Surf Forecast and Surf Report

Issued: 8 pm 04 Aug 2026 (local time)

Forecast update in  hr  min

Today's Balneario Sao Jose sea temperature is
20.2° C
0.8° 

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 5 Aug 2026:

  • Best quality surf: Saturday 8 Aug, 9AM (local time) - 6ft (1.9m), 13s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Saturday 8 Aug, 9AM (local time) - 6ft (1.9m), 13s period, SSE swell with 1,139 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 5 Aug, 3AM (local time) - 2.5ft (0.8m), 12s period with S 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 Wednesday (Aug 05) at 3AM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.7m and 7s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Balneario Sao Jose in the next 16 days are 1.9m 13s and forecast to arrive on Saturday (Aug 08) at 9AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Thursday (Aug 06) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Wed 5th Aug)2.5ft (0.8m) 12s
Best Surf 9AM (Sat 8th Aug)6ft (1.9m) 13s
Most Powerful 9AM (Sat 8th Aug)6ft (1.9m) 13s

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


The Lowdown

Alright, let's get into it. These next couple of weeks are a bit of a mixed bag for the Balneario Sao Jose stretch. We’ve got a slow start, a couple of windows where it could get really fun, and some periods you’ll want to sleep in for. The main thing is to be patient and pick your moments.

Right off the bat, Wednesday and Thursday are pretty quiet. We’re looking at small, weak surf, around 2ft. The energy is low (176 and 112), and while the wind is offshore or even glassy, it’s just not doing much. Thursday afternoon is dead calm, but the swell is still small and short-period. It’s surfable, but you’ll be working hard for nothing special.

Friday is similar in size, but the wind gets a bit more tricky. The morning is okay, but by the afternoon it’s onshore and the conditions go downhill. You can give that a miss.

Then things wake up for Saturday the 8th. We’ve got a pulse of bigger energy coming in, jumping to 6ft in the morning. That’s a solid step up. The combined energy is strong too (1637), and with light offshore winds, it’s looking clean. This is the standout of the first week. It’s got some size to it, so it’s for the more experienced crew. The swell direction is SSE, which is a bit east of the ideal, but the size and clean conditions should make up for it. Saturday afternoon drops off a bit in size and gets a little messy, but the morning is the pick.

Sunday is a write-off. The wind goes onshore and it’s choppy. The size is still there, but the quality is gone.

We get a bit of a lull early next week. Monday and Tuesday have some rain and onshore wind, making it messy. Tuesday morning is glassy but the swell is down to 4ft. Not great.

The next real highlight looks to be Wednesday the 19th. The morning is glassy with a 5ft SSW swell and a period of 11 seconds. The energy is moderate (588), but the conditions look spot on for a clean session. This is another one for the better surfers, as it's pushing the size limit. It's a promising window, but it's a bit further out, so I wouldn't book the day off work just yet.

The week before that, on the 14th, there's a pulse of 5ft with a 14-second period, but the wind is questionable, making it a gamble. The morning is cross-shore, which could be workable, but it’s not a clear call.

Towards the end of the run, on the 17th, there’s a small window with a cross-offshore wind and a 4ft easterly swell. It’s not big, but it’s clean. A bit of a long shot.

So, to keep it simple: the best bets are the mornings of Saturday the 8th and Wednesday the 19th. Both have size and clean conditions. The rest is about making the most of small windows and waiting for the wind to play nice.

Rusty

Short Range Forecast

Some drizzle, heaviest during Fri afternoon. Warm (max 31°C on Thu afternoon, min 20°C on Fri afternoon). Wind will be generally light.

Days 5-7 Weather Summary

Moderate rain (total 15mm), heaviest on Fri night. Warm (max 25°C on Sat morning, min 19°C on Fri night). Wind will be generally light.

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
1
1
1
1
2
1
0
1
4
2
3
0
0
0
1
2
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
S
12
0.7
S
11
0.7
S
11
0.6
S
10
0.7
E
8
0.7
E
8
1.2
E
8
0.7
E
8
0.7
SSW
11
0.5
E
8
1.9
SSE
13
1.4
S
12
1.1
S
12
1.2
S
12
1.1
S
12
0.9
SSE
12
1.4
SSE
8
1.4
SSE
12
1.2
S
12
Wave Graph
Metric surfscale
Energy kJ
139
121
116
74
57
58
168
54
105
28
1139
584
336
439
377
224
204
497
376
Wind (km/h)
10
N
5
NNW
5
SSE
0
NNW
5
NNE
0
NNW
10
NNW
10
W
10
S
5
WNW
5
NE
10
ESE
5
N
15
SW
15
SSW
10
SSE
10
SSE
10
S
10
S
Wind State
cross-off
glassy
glassy
glassy
cross-off
glassy
off
cross-off
on
glassy
cross-off
cross-on
cross-off
cross-on
cross-on
on
on
on
on
High Tide
6:42AM1.09m
7:07PM0.92m
7:54AM0.98m
8:13PM0.80m
9:59AM0.93m
10:01PM0.75m
1:09PM1.07m
00:04AM0.82m
1:40PM1.19m
00:53AM0.94m
2:08PM1.28m
1:28AM1.07m
Low Tide
11:29PM0.47m
1:52PM0.54m
11:54PM0.53m
4:28PM0.60m
4:36AM0.50m
6:03PM0.55m
5:54AM0.37m
7:06PM0.48m
6:51AM0.22m
7:52PM0.42m
7:38AM0.09m
8:27PM0.40m
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
cloud
light rain
rain showers
clear
clear
part cloud
part cloud
light rain
light rain
light rain
light rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
6:39
6:37
6:37
6:37
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:45
5:45
5:45
5:45
5:46
 mm
1
6
1
4
2
2
9
Temp °C
23
28
26
25
30
31
27
31
27
19
25
25
25
22
20
19
19
20
20
Feels °C
23
27
26
25
29
32
25
29
27
22
26
27
26
23
21
20
21
22
21
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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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