Surf Forecasts:
Balneario Sao Jose surf forecast from 6 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 3AM (local time) - 3.5ft (1.1m), 10s period, S swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 3AM (local time) - 7.5ft (2.3m), 10s period, SSE swell with 998 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 3AM (local time) - 3.5ft (1.1m), 10s 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 Tuesday (Sep 08) at 3AM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 0.8m and 6s. Another secondary swell of 0.8m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Balneario Sao Jose in the next 16 days are 2.3m 10s and forecast to arrive on Monday (Sep 07) at 3AM. Winds are predicted to be onshore 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 (Sep 10) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Tue 8th Sep) | 3.5ft (1.1m) 10s |
| Best Surf | 3AM (Tue 8th Sep) | 3.5ft (1.1m) 10s |
| Most Powerful | 3AM (Mon 7th Sep) | 7.5ft (2.3m) 10s |
Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s size up the scene for Balneario Sao Jose over the next couple of weeks.
The first few days are a write-off. Sunday the 6th and Monday the 7th are just blown-out junk. On Sunday you’ve got a 5ft SSE swell with a weak 7-second period, and the wind is hammering straight onshore. Monday shows a bit more size, up to 6ft from the S, but the wind is still cross-onshore, making it a real choppy mess. The combined energy is moderate at 665, but it’s not worth fighting.
The first real window is Tuesday morning, the 8th. The wind goes glassy, and that 4ft S swell has a nice 11-second period on it. The combined energy is a solid 396. It’s small, but clean as a whistle, perfect for the intermediates.
Wednesday the 9th offers another small, glassy morning. The swell is 4ft from the ESE, with an 8-second period. The combined energy of 278 is there, and with zero wind, it’ll be a fun, clean session. Thursday the 10th keeps the glassy morning streak alive with a 3ft, 12-second groundswell from the SSE, giving a combined energy of 272. It’s small, but that long period will make it pack a punch.
The real standout is Monday the 14th. Monday morning is glassy with a 5ft SSE swell, 12-second period, and combined energy of 880. That’s strong energy. Then Monday afternoon, the swell jumps to 7ft from the same SSE direction, still with a 12-second period, and the combined energy rockets to 1050. The wind is glassy again. This is a proper swell, and it’s going to be a beast. That 7ft is expert territory, but for the experienced crew, it’ll be a day to remember.
The second week keeps things interesting. Tuesday the 15th morning has a clean 4ft SE swell with a cross-offshore wind, giving a combined energy of 537. Friday the 18th morning is glassy again with a 2ft, 14-second swell from the S, but the energy is a surprising 407, so there’ll be some long, clean lines. The afternoon of the 18th is another highlight with a 4ft S swell, 13-second period, and clean wind, giving a combined energy of 580. That’s a very nice session to aim for.
The crowds at Balneario Sao Jose are often there, so expect some company on those good days. The consistent, clean conditions kicking in from the 8th onwards mean it won’t stay poor for long, and the forecasts are looking promising.
Rusty.
Short Range ForecastHeavy rain (total 51mm), heaviest during Sun morning. Very mild (max 19°C on Sat night, min 15°C on Sun morning). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 26mm), heaviest during Thu afternoon. Warm (max 24°C on Fri morning, min 17°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | SSE 6 | SSE 7 | SSE 6 | SSE 9 | S 10 | S 10 | S 10 | S 11 | S 10 | S 10 | ESE 8 | ESE 8 | SSE 12 | SSE 12 | S 13 | S 15 | S 13 | S 12 | S 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 182 | 214 | 125 | 807 | 653 | 479 | 284 | 275 | 212 | 131 | 174 | 145 | 192 | 186 | 168 | 159 | 173 | 113 | 68 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | cross-on | cross-on | cross | glassy | cross-on | glassy | glassy | glassy | cross-off | glassy | cross-on | glassy | cross-off | cross-on | cross-off |
High Tide | 9:36PM0.70m | 1:31PM1.11m | 00:11AM0.84m | 1:40PM1.20m | 00:41AM1.00m | 1:52PM1.26m | 1:11AM1.16m | 2:09PM1.29m | 1:42AM1.29m | 2:29PM1.30m | 2:13AM1.38m | 2:51PM1.30m | 2:44AM1.43m | ||||||
Low Tide | 11:46PM0.68m | 5:50AM0.33m | 6:59PM0.51m | 6:41AM0.17m | 7:31PM0.44m | 7:22AM0.05m | 7:58PM0.39m | 7:58AM-0.02m | 8:21PM0.35m | 8:28AM-0.04m | 8:39PM0.31m | 8:54AM-0.01m | 8:54PM0.27m | ||||||
 |  |  |  |  | |  |  | |  |  | | | | | | | | | |
 | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — |
mm | 12 | 18 | 6 | 8 | 2 | 2 | 3 | — | — | — | 3 | 1 | 1 | 2 | 10 | 7 | — | 2 | 1 |
Temp °C | 19 | 16 | 15 | 15 | 16 | 16 | 17 | 19 | 19 | 18 | 21 | 21 | 21 | 23 | 23 | 23 | 24 | 24 | 25 |
Feels °C | 18 | 14 | 15 | 12 | 15 | 15 | 16 | 19 | 19 | 19 | 23 | 23 | 23 | 26 | 26 | 26 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | S 9 | SSE 6 | SSE 9 | S 10 | S 10 | S 10 | ESE 6 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | S 12 | S 12 |
| kJ | 25 | 41 | 125 | 807 | 653 | 479 | 284 | 121 | 136 | 131 | 174 | 145 | 104 | 78 | 62 | 62 | 63 | 113 | 68 |
Swell 2 Height (m) Direction Period (s) | SE 10 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | — | S 11 | S 10 | S 10 | SSE 10 | SSE 10 | SSE 12 | SSE 12 | S 13 | S 15 | S 13 | SE 13 | SE 12 |
| kJ | 16 | 24 | 12 | 11 | 12 | 6 | — | 275 | 212 | 127 | 100 | 72 | 192 | 186 | 168 | 159 | 173 | 7 | 6 |
Swell 3 Height (m) Direction Period (s) | S 16 | SE 10 | SE 10 | — | — | — | — | — | SE 13 | SSE 12 | S 15 | SSE 14 | E 14 | SE 14 | SSE 17 | S 12 | SE 13 | SE 13 | — |
| kJ | 5 | 4 | 4 | — | — | — | — | — | 46 | 58 | 4 | 36 | 4 | 8 | 55 | 101 | 7 | 7 | — |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSE 7 | — | — | — | E 8 | E 5 | — | — | — | — | — | — | — | — | — | ENE 3 | E 8 | E 5 |
| kJ | 182 | 214 | — | — | — | 11 | 59 | — | — | — | — | — | — | — | — | — | 3 | 76 | 41 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 168 | 362 | 19 | 28 | 32 | 28 | 26 | 0 | 35 | 0 | 0 | 0 | 0 | 0 | 47 | 0 | 0 | 19 | 0 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
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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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