Balneario Sao Jose Surf Break

Lat Long: 24.09° S 46.60° W

Balneario Sao Jose Surf Forecast and Surf Report

Issued: 8 pm 17 Jul 2026 (local time)

Forecast update in  hr  min

Today's Balneario Sao Jose sea temperature is
18.6° C
1.1° 

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 18 Jul 2026:

  • Best quality surf: Saturday 18 Jul, 3PM (local time) - 3.5ft (1.1m), 8s period, E swell with cross-offshore winds.
  • Most powerful swell: Friday 24 Jul, 6PM (local time) - 4.5ft (1.4m), 9s period, SSE swell with 315 kJ wave energy.
  • Next surfable swell (1★+): Saturday 18 Jul, 6AM (local time) - 2.5ft (0.8m), 8s period with E 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 Saturday (Jul 18) at 6AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.5m and 10s. 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 1.4m 9s and forecast to arrive on Friday (Jul 24) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Jul 19) at 3PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sat 18th Jul)2.5ft (0.8m) 8s
Best Surf 3PM (Sat 18th Jul)3.5ft (1.1m) 8s
Most Powerful 6PM (Fri 24th Jul)4.5ft (1.4m) 9s

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


The Lowdown

Alright, Rusty here, checkin’ in with the local outlook for Balneario Sao Jose.

First up, the water temp is sittin’ at 66°, which is a bit colder than what we’re used to this time of year. That’s the price we pay for a little winter bite.

The next week or so is pretty quiet. We’ve got a long stretch of small, workable waves from the 17th all the way through to the 26th of July, but honestly, nothing’s gonna get your heart poundin’. The swell is tiny, mostly under 3 ft, with weak energy readings (around 82 to 211). The wind is mostly light and offshore or cross-offshore, which will keep the surface clean, but the waves just don’t have the push. Saturday morning the 18th looks the pick of this early bunch with a clean 3 ft leftover swell from the ESE and a light offshore N wind, but it’s still a pretty small affair.

Then we hit a bit of a lull from the 22nd to the 24th, with some poor surf and questionable conditions. The 23rd and 24th have some glassy moments, but the swell is weak and pretty much onshore.

The real story starts to build late in the month. Sunday the 27th of July morning cleans up with a glassy 3 ft swell from the S, but the energy is ramping up (255). Then, Monday the 28th of July morning is a genuine standout. The swell is 3 ft from the SSE, but the period jumps to 14 seconds, with a massive energy reading of 423. It’s glassy, clean, and that long-period groundswell will have some real shape. This is a classic point-break or reef wave, so keep that in mind.

The best of the whole run, though, is Thursday the 30th of July morning. The swell kicks up to 7 ft from the SSE, with a massive energy reading of 1051. It’s glassy, and the conditions are flagged as excellent for experienced surfers. That’s a solid, powerful wave with good wind. This one is for the guys who know what they’re doing. The morning of the 1st of August is another clean, chunky option with 6 ft from the ESE and glassy conditions, but it won’t quite have the same grunt as the 30th.

For the best session, I’m callin’ Thursday the 30th of July morning. That’s the one to circle. The 27th is a close second for a cleaner, smaller day.

Rusty, out.

Short Range Forecast

Mostly dry. Warm (max 32°C on Mon afternoon, min 19°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 34°C on Tue afternoon, min 20°C on Wed afternoon). Wind will be generally light.

Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
2
1
1
1
2
1
1
1
1
1
1
0
0
1
1
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)
0.9
E
7
0.9
ESE
8
1.1
E
8
0.8
E
8
0.8
ESE
8
0.9
ESE
8
1.5
E
8
1
E
8
0.9
E
8
0.9
E
8
0.8
E
8
0.8
E
8
0.7
E
8
0.6
E
8
0.6
E
8
0.7
E
8
0.7
ESE
8
0.7
ESE
8
0.7
S
9
Wave Graph
Metric surfscale
Energy kJ
88
112
156
78
87
112
295
137
105
100
78
84
61
44
46
66
70
70
79
Wind (km/h)
10
NNW
10
N
10
NNE
10
N
15
N
10
NNE
10
N
15
N
10
N
10
N
15
NNW
10
NW
10
NNW
5
SW
15
SSW
10
NE
5
NNE
5
SE
5
WSW
Wind State
off
off
cross-off
off
cross-off
cross-off
off
cross-off
off
off
off
cross-off
off
cross
cross-on
cross-off
glassy
glassy
cross
High Tide
4:33AM1.27m
5:20PM1.08m
5:11AM1.22m
5:49PM1.03m
5:52AM1.13m
6:20PM0.97m
6:39AM1.02m
6:57PM0.91m
7:42AM0.91m
7:46PM0.84m
9:31AM0.84m
9:11PM0.79m
Low Tide
10:31PM0.53m
11:11AM0.20m
10:39PM0.50m
11:33AM0.31m
11:02PM0.48m
11:55AM0.43m
11:38PM0.49m
12:27PM0.55m
00:38AM0.52m
3:06PM0.66m
3:42AM0.52m
5:08PM0.66m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:48
6:48
6:47
6:47
6:47
6:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:37
5:37
5:37
5:37
5:37
5:38
 mm
Temp °C
20
27
28
22
29
30
24
31
32
25
33
34
26
24
22
21
22
22
21
Feels °C
19
24
26
20
26
28
22
29
30
23
31
33
25
24
22
24
25
25
24
  • Map Icons:
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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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