Surf Forecasts:
Balneario Sao Jose surf forecast from 2 Sep 2026:
- Best quality surf: Thursday 3 Sep, 12AM (local time) - 5ft (1.6m), 11s period, SSE swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 9AM (local time) - 5ft (1.6m), 12s period, SSE swell with 683 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 6AM (local time) - 4.5ft (1.4m), 8s 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 (Sep 02) at 6AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.6m and 9s. 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 1.6m 12s and forecast to arrive on Tuesday (Sep 08) at 9AM. Winds are predicted to be 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 Thursday (Sep 03) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 2nd Sep) | 4.5ft (1.4m) 8s |
| Best Surf | 12AM (Thu 3rd Sep) | 5ft (1.6m) 11s |
| Most Powerful | 9AM (Tue 8th Sep) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.
The Lowdown
G’day, Rusty here. We’ve got a solid run of surf ahead at Balneario Sao Jose, but you’ll need to pick your windows. The first few days are the pick, then things get messy mid-period before a nice clean-up early in the second week.
Kicking off Wednesday morning, the 2nd of September, it’s glassy with a clean 5ft southerly swell, period around 9 seconds, and moderate energy (408). This is a ripper start – clean, no wind, and the water temp is about average for this time of year, so no surprises there. It’s a beach/pier setup, exposed to the swell, and crowds are often around, but with conditions this good, it’s worth it.
Thursday morning the 3rd, the swell drops a touch to 5ft from the SSE, but the period bumps up to 11 seconds – a proper groundswell now – with energy climbing to 540. Light offshore wind from the NE, waves are clean and well-shaped. This is a standout morning. That longer period means better shape and longer lulls between sets, making it easier to paddle out. It’s a good day for intermediates – not too big, but plenty of push.
Friday morning the 4th, it’s smaller – 3ft from the SSE – with glassy conditions and 283 energy. A fun little session for a smaller board, very clean.
From Friday afternoon through the weekend, things go south. Onshore winds and rain showers kick in. Swell drops to 2ft to 2ft and becomes weak and messy with short period (8 seconds). Energy falls to triple digits (136) or below. Not worth paddling for.
Monday the 7th and Tuesday the 8th see the swell rebuild a bit – 5ft to 5ft from the S and SSE – but onshore winds and rain ruin the quality. Periods around 8-12 seconds, energy moderate (298-688), but it’s choppy and ugly.
Wednesday the 9th afternoon brings a change: 6ft from the east, cross-offshore wind from the NE, and 450 energy. The period is short at 7 seconds, so it’s a windswell, but the clean conditions make it rideable. Not a standout, but a break from the dross.
Now, here’s the real standout: Thursday morning the 10th of September. You get 6ft from the ESE, long period of 9 seconds, and strong energy of 720. Light cross-offshore wind from the NE, waves are clean. This is the best of the run – proper groundswell, good size, and excellent shape. Get out early.
Friday the 11th morning is also good – 5ft from the ESE, period 10 seconds, 485 energy, and clean with cross-offshore wind. A solid follow-up.
After that, it fades again. Saturday the 12th and Sunday the 13th drop back to 3ft, with messy wind and rain on Sunday. Monday the 14th sees the swell jump to 6ft from the SE, but strong cross-shore wind and rain make it a chop-fest – more interesting for kite surfing than paddle.
Then, a late gem: Tuesday the 15th of September morning, glassy conditions with 6ft from the SE, 9-second period, and 526 energy. Tuesday afternoon is even better – 6ft, glassy calm (0 wind), 643 energy, very clean. Wednesday the 16th morning stays glassy with 6ft from the SE, 10-second period, and 689 energy – a big, clean groundswell morning, but note the heavy rain rolling in by afternoon. The 16th is also a Tuesday more than a week out, so keep an eye on the forecasts – it’s promising but not locked in.
Through the second week, the standout remains the clean glassy mornings around the 10th and the 15th-16th. The rest is average to poor.
Overall, the first week has the most reliable windows, with Thursday the 3rd morning and Thursday the 10th morning being the true standouts. After that, the second week’s best bet is Tuesday the 15th and Wednesday the 16th mornings – but only if you’re willing to gamble on the long-range call.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 27°C on Fri morning, min 16°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 37mm), heaviest during Sat afternoon. Warm (max 21°C on Sat morning, min 15°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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) | S 6 | S 9 | S 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | SSE 10 | S 6 | S 6 | SSE 6 | SSE 6 | SSE 6 | S 6 | S 8 | S 9 | SSE 7 |
Wave Graph | |||||||||||||||||||
101 | 356 | 509 | 619 | 517 | 427 | 291 | 183 | 146 | 71 | 51 | 37 | 87 | 160 | 188 | 101 | 273 | 286 | 183 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | on | cross-off | cross-off | cross-on | cross-off | glassy | cross-on | cross-off | cross-on | on | on | on | on | on | on | on | on |
High Tide | 5:25AM1.21m | 5:34PM1.00m | 6:18AM1.06m | 6:14PM0.86m | 7:35AM0.91m | 1:14PM0.85m | 7:15PM0.74m | 1:22PM0.99m | 9:36PM0.70m | 1:31PM1.11m | 00:11AM0.84m | 1:40PM1.20m | 00:41AM1.00m | ||||||
Low Tide | 10:20PM0.31m | 10:47AM0.47m | 10:34PM0.36m | 10:48AM0.64m | 10:54PM0.44m | 10:43AM0.79m | 4:56PM0.69m | 11:18PM0.54m | 4:35AM0.48m | 6:16PM0.60m | 5:50AM0.33m | 6:59PM0.51m | 6:41AM0.17m | 7:31PM0.44m | |||||
— | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | |
— | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | |
mm | 2 | — | — | — | — | — | — | — | — | 1 | 1 | 4 | 9 | 5 | 5 | 8 | 2 | 2 | 3 |
Temp °C | 19 | 20 | 20 | 18 | 23 | 23 | 20 | 27 | 22 | 19 | 21 | 20 | 19 | 17 | 16 | 15 | 16 | 16 | 15 |
Feels °C | 20 | 20 | 20 | 18 | 23 | 23 | 21 | 26 | 21 | 21 | 23 | 21 | 18 | 15 | 15 | 13 | 15 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | S 6 | S 9 | S 10 | SSE 11 | SSE 11 | SSE 11 | SSE 11 | E 8 | E 8 | E 8 | S 6 | S 6 | ESE 9 | ESE 8 | ESE 8 | S 6 | S 8 | E 6 | S 10 |
101 | 356 | 509 | 619 | 517 | 427 | 291 | 98 | 108 | 71 | 45 | 35 | 25 | 23 | 21 | 101 | 273 | 17 | 125 | |
Swell 2 Height (m) Direction Period (s) | E 9 | E 9 | ESE 9 | E 8 | E 8 | — | E 6 | SSE 11 | SSE 11 | SSE 10 | E 8 | E 8 | S 9 | S 14 | S 13 | ESE 7 | E 6 | SSE 11 | ESE 8 |
76 | 40 | 25 | 13 | 13 | — | 53 | 183 | 146 | 71 | 51 | 37 | 27 | 16 | 14 | 18 | 15 | 43 | 6 | |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SE 9 | — | — | — | — | — | S 11 | S 10 | S 4 | SSE 10 | SE 10 | SSE 10 | SSE 9 | — | S 12 | ESE 7 | E 8 | — |
9 | 12 | — | — | — | — | — | 2 | 2 | 14 | 40 | 25 | 9 | 8 | — | 12 | 10 | 12 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 4 | E 5 | E 6 | — | SSW 3 | — | — | — | SSE 6 | SSE 6 | SSE 6 | ESE 6 | — | S 9 | SSE 7 |
— | — | — | — | 10 | 55 | 108 | — | 6 | — | — | — | 87 | 160 | 188 | 34 | — | 286 | 183 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 410 | 0 | 0 | 28 | 0 | 0 | 50 | 0 | 19 | 135 | 409 | 361 | 175 | 175 | 135 | 135 | 95 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











