Surf Forecasts:
Balneario Sao Jose surf forecast from 19 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 12AM (local time) - 6ft (1.9m), 15s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 9PM (local time) - 7ft (2.1m), 16s period, SSE swell with 2,028 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 3AM (local time) - 2ft (0.6m), 7s 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 Thursday (Aug 20) at 3AM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.1m and 13s. Another secondary swell of 0.5m and 4s 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 2.1m 16s and forecast to arrive on Monday (Aug 24) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 20th Aug) | 2ft (0.6m) 7s |
| Best Surf | 12AM (Tue 25th Aug) | 6ft (1.9m) 15s |
| Most Powerful | 9PM (Mon 24th Aug) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.
The Lowdown
Alright, Rusty here, let's talk about what's coming up for Balneario Sao Jose.
The next couple of weeks look a bit of a mixed bag. We’ve got a few solid pulses of energy rolling through, but the winds are going to be the main character in this story for a lot of the time. There's a lot of onshore and cross-onshore breeze, which is going to be a real buzzkill, making things choppy and messy. Let’s break it down.
Right now, we’re scraping by with a small, glassy window this Wednesday morning. The swell is a tiny 2ft from the ESE with a period of 8 seconds, and the combined energy is weak (61). The wind is glassy from the NNW, so it’s clean, but it’s really just a splash-around for the longboard. The water temp is 69°, which is about 2° warmer than normal, so nothing unusual there.
The next few days are pretty grim. Thursday and Friday are mostly a write-off with poor conditions and onshore winds. The swell tries to build on Friday afternoon, hitting 5ft from the S, but it’s a short-period 7 seconds and the wind is a messy cross-onshore, making it unpleasant. The combined energy jumps to 435 (moderate), but it’s not worth paddling out for.
The weekend is a bit of a tease. Saturday morning has 5ft of S swell with a 10-second period, but the wind is onshore (SSE). The energy is moderate (375), but it’s just not clean. Sunday is similar, with smaller waves and onshore wind.
The first real standout to keep an eye on is Tuesday the 25th. The early morning is looking magic. The swell is 5ft from the S with a nice 13-second period (groundswell), and the combined energy is strong (867). The wind? Absolutely glassy calm from the ENE. This is the kind of window where Balneario Sao Jose can really shine. It’s an intermediate-level spot, so that 5ft is a fun size, but keep in mind those longer period swells can make beach breaks a bit wonky, though the glassy conditions will do wonders. It’s also a spot that’s often crowded, so expect company.
The week after that is a slow fade. There’s a decent morning on Wednesday the 26th with 3ft from the S and glassy conditions, but it’s a lot smaller. The next potential highlight isn’t until Monday the 31st of August. The morning brings a clean, glassy start with 6ft of E swell, but the period is a short 7 seconds. The energy is moderate (448), so it’s got some push, but the short period is a bit of a downer. The winds are glassy, so it’ll be clean.
Then there’s a long gap of nothing special until the following Thursday. Thursday the 3rd of September is looking like the best of the long-range. The morning has 5ft of S swell with a very long 13-second period, and the combined energy is strong (712). The wind is glassy from the SW. This is another premium window, but it’s a week and a half away, so keep your fingers crossed the forecast holds.
For the best on offer, I’d lock in Tuesday the 25th of August for the morning glass and solid groundswell. The second best is the promising Thursday morning the 3rd of September. Everything else is a bit of a gamble with the wind.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Sat morning. Warm (max 28°C on Wed afternoon, min 17°C on Sat morning). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Tue morning. Very mild (max 19°C on Sun morning, min 17°C on Sat afternoon). Wind will be generally light. | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
PM | 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) | ESE 8 | E 7 | E 7 | E 7 | ENE 5 | SSW 5 | S 7 | S 6 | S 10 | S 10 | S 10 | S 9 | S 9 | S 11 | SSE 14 | SSE 13 | S 15 | S 14 | S 13 | S 13 |
Wave Graph | ||||||||||||||||||||
58 | 39 | 25 | 26 | 31 | 54 | 195 | 75 | 545 | 434 | 307 | 246 | 207 | 332 | 1704 | 1641 | 1589 | 1178 | 824 | 573 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross | glassy | cross | off | cross-on | on | glassy | on | on | cross | cross-on | on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | glassy |
High Tide | 5:50PM0.95m | 6:51AM0.89m | 6:25PM0.85m | 8:30AM0.79m | 1:28PM0.82m | 7:40PM0.75m | 1:16PM0.93m | 00:01AM0.78m | 1:25PM1.04m | 00:39AM0.91m | 1:40PM1.14m | 1:05AM1.05m | 1:57PM1.22m | 1:30AM1.18m | ||||||
Low Tide | 11:23PM0.42m | 11:06AM0.67m | 11:57PM0.52m | 10:28AM0.77m | 5:16PM0.72m | 5:01AM0.47m | 6:21PM0.62m | 6:06AM0.35m | 6:57PM0.51m | 6:51AM0.22m | 7:27PM0.41m | 7:28AM0.10m | 7:55PM0.34m | |||||||
— | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | |
5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | — | — | — | 2 | — | — | — | 1 | 4 | 2 | 2 | 1 | 2 | 5 | — |
Temp °C | 28 | 21 | 26 | 26 | 26 | 22 | 21 | 19 | 18 | 18 | 17 | 19 | 18 | 17 | 17 | 17 | 18 | 18 | 19 | 19 |
Feels °C | 28 | 22 | 27 | 27 | 24 | 22 | 20 | 19 | 18 | 18 | 17 | 19 | 18 | 16 | 16 | 16 | 18 | 19 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | E 7 | E 7 | SSW 5 | E 4 | E 7 | E 8 | S 6 | S 10 | S 10 | S 10 | S 9 | S 9 | S 11 | SSE 14 | SSE 13 | S 15 | S 14 | S 13 | S 13 |
58 | 39 | 25 | 5 | 14 | 44 | 60 | 75 | 545 | 434 | 307 | 246 | 207 | 332 | 1704 | 1641 | 1589 | 1178 | 824 | 573 | |
Swell 2 Height (m) Direction Period (s) | S 9 | S 9 | SW 4 | S 11 | E 7 | SE 11 | — | E 8 | E 8 | E 7 | E 7 | E 7 | S 12 | S 13 | — | — | — | — | — | E 5 |
2 | 2 | 4 | 9 | 15 | 5 | — | 49 | 19 | 9 | 4 | 1 | 75 | 126 | — | — | — | — | — | 29 | |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 13 | SE 12 | SE 12 | S 10 | — | — | S 11 | — | — | — | — | E 7 | E 7 | — | — | — | — | — | — |
7 | 7 | 6 | 6 | 16 | — | — | 9 | — | — | — | — | 1 | 1 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SW 3 | SW 4 | E 7 | ENE 5 | SSW 5 | S 7 | — | — | — | — | — | — | — | — | E 4 | E 4 | E 5 | E 5 | — |
— | 3 | 6 | 26 | 31 | 54 | 195 | — | — | — | — | — | — | — | — | 8 | 25 | 38 | 34 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 55 | 53 | 9 | 102 | 0 | 140 | 373 | 0 | 95 | 32 | 28 | 32 | 32 | 28 | 95 | 28 | 0 | 0 | 0 | 0 |
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.











