Surf Forecasts:
Balneario Sao Jose surf forecast from 31 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 12PM (local time) - 3.5ft (1.1m), 6s period, S swell with offshore winds.
- Most powerful swell: Monday 7 Sep, 12AM (local time) - 7ft (2.2m), 11s period, S swell with 1,252 kJ wave energy.
- Next surfable swell (1★+): Monday 31 Aug, 3AM (local time) - 2.5ft (0.7m), 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 Monday (Aug 31) at 3AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.5m and 5s. 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 2.2m 11s and forecast to arrive on Monday (Sep 07) at 12AM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 31st Aug) | 2.5ft (0.7m) 8s |
| Best Surf | 12PM (Tue 1st Sep) | 3.5ft (1.1m) 6s |
| Most Powerful | 12AM (Mon 7th Sep) | 7ft (2.2m) 11s |
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 on offer at Balneario Sao Jose over the next couple of weeks.
The first few days are pretty grim to be honest. We’ve got a run of poor surf and poor conditions, so don’t bother paddling out until Thursday the 3rd of September. That’s a solid 3-day gap of nothing worth chasing.
Things start to look up from Thursday the 3rd. The morning brings a 5 ft swell from the SE, with a period of 11 seconds – that’s a nice groundswell with some proper energy behind it (combined energy of 443). The wind is light and cross-shore, so it’ll be a bit lined up but not perfect. It’s a marginal call, but you’ll get some waves. This is a beach/pier setup, so that long period might make it a bit straight, but there’ll be a few.
The real standout is Friday the 4th, hands down. Early morning you’ve got a glassy ocean, zero wind, and a clean 3 ft swell from the SSE. It’s small, but with that period at 11 seconds, there’s some shape. Combined energy is 234, so it’s not weak, but it’s not thumping either. The water temp is about average for this time of year, no drama. This is the best window for a long, clean session with no crowds to worry about early – though Balneario Sao Jose does get crowded often, so get in before the pack shows up.
The next big highlight is Wednesday the 9th of September. In the afternoon, the wind drops to glassy, and we get a 6 ft swell from the SE with a period of 9 seconds. That’s solid, punchy surf with combined energy of 533. The conditions are clean, and the swell is heading into the pier area nicely. This is the best surf of the whole outlook – good size, clean faces, and proper energy. Not too big for most, but strong enough to have some fun.
Thursday the 10th also offers glassy conditions in the morning with a 4 ft ESE swell, period of 8 seconds, and combined energy of 430. It’s a touch less powerful than Wednesday, but still good clean waves. Friday the 11th morning is another glassy one, with 4 ft from the ESE, period of 9 seconds, energy of 255. Nice small-wave day.
After that, we get into a run of poor conditions again starting Saturday the 12th, with onshore winds and no real quality. The second week really only has those two standouts – Wednesday the 9th and Thursday the 10th – and they’re earlier in the window. The rest is a mix of marginal and poor. If you’re around, hit the 9th afternoon for sure.
Always remember, longer-period swells like the 11-second ones can be a bit tricky at a beach break, but the pier helps focus the energy. If you’re a beginner, the 6 ft on the 9th might be a bit much, but the smaller days are fine.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Sun night. Warm (max 24°C on Tue morning, min 17°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Sat morning. Warm (max 25°C on Fri morning, min 15°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | ||||||||||||||
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) | E 8 | E 8 | E 8 | E 6 | S 6 | S 6 | ESE 9 | SSE 6 | SSE 8 | SSE 8 | SE 11 | SSE 11 | SSE 11 | SSE 11 | ESE 8 | E 8 | S 6 | SSW 6 | S 6 |
Wave Graph | |||||||||||||||||||
68 | 50 | 136 | 67 | 106 | 84 | 110 | 70 | 210 | 249 | 408 | 305 | 247 | 146 | 108 | 58 | 37 | 40 | 61 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | on | cross-off | off | cross-off | cross-on | cross-on | cross-on | cross-off | cross | cross-on | glassy | glassy | cross-on | cross-on | on | on | on |
High Tide | 4:04AM1.42m | 4:28PM1.24m | 4:42AM1.33m | 5:00PM1.13m | 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 | ||||||
Low Tide | 9:56PM0.25m | 10:24AM0.16m | 10:09PM0.27m | 10:40AM0.31m | 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 | |||||
— | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | |
— | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | |
mm | 12 | 1 | 1 | 1 | 1 | 3 | 2 | 1 | — | — | — | — | — | — | 1 | 4 | 5 | 5 | 15 |
Temp °C | 20 | 23 | 23 | 21 | 24 | 24 | 20 | 19 | 19 | 18 | 21 | 21 | 19 | 25 | 23 | 19 | 18 | 17 | 17 |
Feels °C | 22 | 26 | 26 | 23 | 25 | 25 | 19 | 17 | 17 | 18 | 20 | 20 | 19 | 24 | 23 | 19 | 17 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | S 6 | E 6 | S 6 | S 6 | ESE 9 | E 9 | SSE 8 | SSE 8 | SE 11 | SSE 11 | SSE 11 | ESE 7 | ESE 8 | E 8 | E 8 | E 8 | S 6 |
68 | 50 | 11 | 67 | 106 | 84 | 110 | 42 | 210 | 249 | 408 | 305 | 247 | 86 | 99 | 58 | 31 | 36 | 36 | |
Swell 2 Height (m) Direction Period (s) | SSW 5 | S 5 | S 9 | S 7 | E 7 | E 8 | SE 8 | SE 8 | E 9 | E 9 | E 9 | E 9 | E 6 | SSE 11 | SE 10 | S 4 | SSE 10 | SE 9 | E 8 |
21 | 9 | 2 | 36 | 52 | 57 | 28 | 24 | 25 | 13 | 13 | 13 | 52 | 146 | 108 | 10 | 37 | 22 | 36 | |
Swell 3 Height (m) Direction Period (s) | SE 10 | S 10 | — | ESE 8 | — | SW 6 | — | — | — | — | — | — | ESE 9 | S 11 | S 10 | SE 10 | ESE 9 | S 15 | S 9 |
4 | 2 | — | 23 | — | 43 | — | — | — | — | — | — | 15 | 2 | 2 | 49 | 17 | 4 | 16 | |
Wind waves Height (m) Direction Period (s) | — | — | E 8 | — | — | — | SSW 4 | SSE 6 | — | — | E 4 | E 5 | E 6 | — | SW 3 | — | S 6 | SSW 6 | S 6 |
— | — | 136 | — | — | — | 21 | 70 | — | — | 22 | 37 | 78 | — | 2 | — | 32 | 40 | 61 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 48 | 0 | 0 | 0 | 140 | 47 | 135 | 0 | 17 | 28 | 0 | 0 | 43 | 35 | 135 | 362 | 95 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











