
Surf Forecasts:
Balneario Sao Jose surf forecast from 8 Aug 2026:
- Best quality surf: Saturday 8 Aug, 9PM (local time) - 4.5ft (1.3m), 14s period, S swell with offshore winds.
- Most powerful swell: Monday 10 Aug, 6PM (local time) - 8ft (2.4m), 13s period, SSE swell with 1,922 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 9AM (local time) - 4.5ft (1.4m), 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 Saturday (Aug 08) at 9AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.4m and 7s. 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 2.4m 13s and forecast to arrive on Monday (Aug 10) at 6PM. 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+) | 9AM (Sat 8th Aug) | 4.5ft (1.4m) 10s |
| Best Surf | 9PM (Sat 8th Aug) | 4.5ft (1.3m) 14s |
| Most Powerful | 6PM (Mon 10th Aug) | 8ft (2.4m) 13s |
Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.
The Lowdown
Alright folks, it’s Rusty here with a look at the next couple of weeks down at Balneario Sao Jose. This is a beach and pier setup, exposed to the south swell, and right now we’re looking at a bit of a mixed bag. The water is sitting at 69°, which is pretty much what you’d expect for this time of year, no wild surprises there.
We’ve got a little gap to start, but the first real window kicks off Saturday morning, August 8th. The swell is coming in at 5ft from the south, with a period of 10 seconds, and combined energy reading 396 (moderate). The wind is glassy from the ENE at just 3 mph, so it’s going to be clean. This is a solid, fun-sized option for intermediates, but beginners will find it a bit of a push.
The best of the early run looks like Thursday, August 13th. The morning is glassy, with 4ft of SSE swell (12-second period, 478 energy), but the real standout is the afternoon session: 3ft from the south, 12-second period, and a combined energy of 519 (moderate). It’s glassy, clean, and the energy is sweet. This is a top pick for a quiet paddle.
Friday morning, August 14th is another cracker. Glassy conditions, 4ft of SSE swell (13-second period, 708 energy). That’s a longer period, so it’ll have some punch and shape, but it’s still manageable. The crowd factor is "often" here, so don’t expect to be alone.
Then we’ve got a bit of a lull. Saturday morning, August 15th is glassy with 4ft of SSE swell (13-second, 514 energy), so that’s a nice end to the week, but the wind turns onshore later.
The next big moment is Monday, August 17th. The morning has 6ft of east swell, but it’s a short-period 6-second windswell (423 energy) – glassy, but it’ll be a bit lumpy. The afternoon jumps to 7ft of east swell (7 seconds, 514 energy) with a cross-shore wind. That’s getting big for the average surfer.
Now, Tuesday morning, August 18th is a big one. We’ve got 10ft of east swell, 9-second period, and a massive combined energy of 2051 (very strong). The wind is offshore from the NNW at 6 mph, so it’s clean. But hear me now – that’s too big for this break. It’s expert-only territory, and even then, it’s pushing the limits. The setup is better for a kite surfer than a paddle surfer at this size.
The last real highlight is Wednesday morning, August 19th. Glassy, 6ft of ESE swell (9-second, 753 energy). That’s a solid, clean wave with moderate energy, and it’s a good call for a strong intermediate.
After that, the swell drops off. There’s some small, clean stuff on Thursday afternoon, August 20th (3ft, SE, 10-second, 200 energy) and Friday afternoon, August 21st (3ft, SE, 9-second, 201 energy), but it’s fading. The final week is mostly small, weak, and crummy. The last decent looking glassy morning is Sunday, August 23rd with 3ft of SE swell (11-second, 212 energy), but it’s a shadow of what we had.
If you’re picking a winner, I’d say Thursday afternoon, August 13th or Friday morning, August 14th – those are the cleanest, user-friendly, and most reliable waves in the whole run.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Mon morning. Warm (max 27°C on Sat afternoon, min 17°C on Mon afternoon). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue afternoon. Warm (max 26°C on Thu morning, min 18°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
AM | 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) | S 10 | S 11 | S 14 | S 13 | S 13 | SSE 12 | SSE 12 | SSE 13 | S 13 | S 13 | S 13 | S 12 | S 12 | SSE 12 | SSE 12 | SSE 12 | S 12 | SSE 14 | SSE 13 | S 13 | SSE 13 |
Wave Graph | |||||||||||||||||||||
379 | 202 | 538 | 511 | 392 | 743 | 636 | 1299 | 839 | 736 | 713 | 488 | 505 | 608 | 432 | 418 | 279 | 845 | 627 | 521 | 722 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | off | cross | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross-on | glassy | glassy | glassy | cross-off | glassy | cross-on | glassy |
High Tide | 1:09PM1.07m | 00:04AM0.82m | 1:40PM1.19m | 00:53AM0.94m | 2:08PM1.28m | 1:28AM1.07m | 2:35PM1.32m | 2:01AM1.20m | 3:01PM1.32m | 2:33AM1.30m | 3:26PM1.29m | 3:06AM1.36m | 3:50PM1.25m | ||||||||
Low Tide | 7:06PM0.48m | 6:51AM0.22m | 7:52PM0.42m | 7:38AM0.09m | 8:27PM0.40m | 8:18AM-0.01m | 8:56PM0.40m | 8:53AM-0.05m | 9:19PM0.40m | 9:24AM-0.05m | 9:35PM0.40m | 9:50AM0.01m | 9:45PM0.38m | ||||||||
6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | |
— | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | |
mm | — | — | — | — | 1 | 4 | 3 | 3 | 4 | 2 | 3 | 1 | — | — | — | — | — | — | — | — | 1 |
Temp °C | 26 | 27 | 25 | 21 | 20 | 19 | 19 | 17 | 17 | 18 | 18 | 19 | 21 | 21 | 19 | 26 | 26 | 23 | 24 | 21 | 18 |
Feels °C | 28 | 29 | 26 | 23 | 22 | 20 | 20 | 16 | 16 | 18 | 18 | 19 | 21 | 22 | 20 | 28 | 28 | 25 | 26 | 21 | 18 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 9 | S 14 | S 13 | S 13 | SSE 12 | SSE 12 | E 8 | S 13 | S 13 | S 13 | S 12 | S 12 | SSE 12 | SSE 12 | SSE 12 | S 12 | SSE 14 | SSE 13 | S 13 | SSE 13 |
379 | 155 | 538 | 511 | 392 | 743 | 636 | 10 | 839 | 736 | 713 | 488 | 505 | 608 | 432 | 418 | 279 | 845 | 627 | 521 | 722 | |
Swell 2 Height (m) Direction Period (s) | E 7 | S 11 | E 5 | E 6 | E 6 | SSE 16 | SSE 14 | ENE 8 | E 12 | E 8 | E 7 | — | — | — | — | E 6 | E 6 | E 6 | E 6 | SSE 16 | E 6 |
17 | 202 | 34 | 23 | 15 | 51 | 195 | 19 | 3 | 10 | 9 | — | — | — | — | 60 | 49 | 35 | 17 | 208 | 20 | |
Swell 3 Height (m) Direction Period (s) | — | — | SSE 16 | — | — | E 13 | E 8 | — | — | — | — | — | — | — | — | — | SSE 16 | — | SSE 18 | E 6 | — |
— | — | 211 | — | — | 4 | 10 | — | — | — | — | — | — | — | — | — | 191 | — | 64 | 17 | — | |
Wind waves Height (m) Direction Period (s) | — | E 4 | E 5 | SW 3 | S 5 | ESE 6 | ESE 6 | SSE 13 | ESE 6 | ESE 6 | ESE 5 | ESE 5 | E 5 | E 6 | E 6 | — | — | — | — | — | — |
— | 26 | 59 | 4 | 35 | 48 | 40 | 1299 | 58 | 47 | 36 | 33 | 62 | 86 | 92 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 28 | 0 | 55 | 175 | 152 | 95 | 95 | 95 | 28 | 95 | 28 | 26 | 28 | 0 | 0 | 0 | 0 | 0 | 175 | 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.











