Surf Forecasts:
Balneario Sao Jose surf forecast from 16 Aug 2026:
- Best quality surf: Monday 17 Aug, 12AM (local time) - 7ft (2.1m), 8s period, E swell with glassy winds.
- Most powerful swell: Monday 17 Aug, 12AM (local time) - 7ft (2.1m), 8s period, E swell with 531 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 12AM (local time) - 7ft (2.1m), 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 17) at 12AM. The primary swell is predicted to be 2.1m and 8s period with a secondary swell of 1.8m and 8s. Another secondary swell of 0.6m and 11s 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 8s and forecast to arrive on Monday (Aug 17) at 12AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 17th Aug) | 7ft (2.1m) 8s |
| Best Surf | 12AM (Mon 17th Aug) | 7ft (2.1m) 8s |
| Most Powerful | 12AM (Mon 17th Aug) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.
The Lowdown
Alright, let’s talk about Balneario Sao Jose. It’s a beach and pier setup, exposed to the swell, and right now the water is sitting at 69°, which is a touch warmer than usual for this time of year. That’s a nice little bonus.
The next 16 days have a bit of a slow start, but there’s some real promise later on. The first real standout is gonna be Sunday morning, August 16th. We’ve got clean, glassy conditions with a 6ft swell from the ESE. The energy’s moderate (802), and the wind is almost dead calm. It’s gonna be clean, user-friendly waves for the intermediate surfer. Crowds are often a thing here, so get out early.
Then things go pretty quiet through the middle of the week. From Monday afternoon right through to Friday morning, it’s mostly small, weak, or messy. There’s a decent window Monday morning, August 17th – still glassy, 5ft from the ESE, moderate energy (401). It’s surfable, but not a standout. Similarly, Tuesday morning, August 18th is also glassy with 4ft waves (219 energy). Not bad, but the swell is dropping.
The next real moment of glory comes Monday, August 24th, in the afternoon. That’s still over a week away, so keep that in mind, but it looks promising. A 6ft swell from the SSE with a long 14-second period is rolling in. That’s proper groundswell. The combined energy is strong at 1368. Even with a little cross-onshore wind, the quality is there. This is the kind of day where the pier might start working nicely, but that long period stuff can make a beach break a bit straight. Still, the size and power are there.
Then we get a real treat: Tuesday morning and afternoon, August 25th. Light rain, but glassy conditions both sessions. The swell holds at 5ft and 5ft from the S, with a 13-second period. Energy is still high (941 and 747). That’s clean, powerful surf. If you can get out in the rain, you’ll be rewarded. This is the best combo of size, clean wind, and quality in the whole outlook.
Thursday morning, August 27th is another glassy option with 4ft from the SSE, long period (13 seconds), and decent energy (664). Nice conditions, but not quite the standout.
Later on, Monday morning, August 31st – still two weeks away – brings a 6ft S swell with offshore wind from the N at 9 mph. That’s clean, with moderate energy (425). Could be a fun session if the forecast holds.
Overall, the real highlight is the Tuesday the 25th window. Clean glass, solid S swell, good energy. That’s the one to circle.
– Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Tue morning, min 19°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Wed morning, min 17°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 7 | E 7 | E 8 | E 6 | E 7 | ESE 8 | S 6 | S 8 | S 8 | S 12 |
Wave Graph | |||||||||||||||||||||
355 | 308 | 531 | 318 | 238 | 418 | 202 | 163 | 99 | 75 | 75 | 54 | 39 | 55 | 78 | 106 | 75 | 52 | 165 | 124 | 262 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | glassy | glassy | on | glassy | glassy | cross-on | off | glassy | cross-on | cross | cross | cross | cross-off | off | cross-on | glassy | glassy | cross-on | cross |
High Tide | 4:37PM1.16m | 4:44AM1.27m | 5:00PM1.10m | 5:19AM1.16m | 5:24PM1.03m | 5:59AM1.03m | 5:50PM0.95m | 6:51AM0.89m | 6:25PM0.85m | 8:30AM0.79m | 1:28PM0.82m | 7:40PM0.75m | 1:16PM0.93m | 00:01AM0.78m | |||||||
Low Tide | 10:26AM0.20m | 10:08PM0.32m | 10:39AM0.32m | 10:29PM0.32m | 10:52AM0.43m | 10:54PM0.35m | 11:03AM0.55m | 11:23PM0.42m | 11:06AM0.67m | 11:57PM0.52m | 10:28AM0.77m | 5:16PM0.72m | 5:01AM0.47m | 6:21PM0.62m | |||||||
6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | |
— | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:51 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 22 | 20 | 24 | 23 | 21 | 29 | 27 | 26 | 29 | 26 | 20 | 26 | 26 | 25 | 28 | 22 | 18 | 19 | 19 | 18 |
Feels °C | 25 | 23 | 22 | 26 | 25 | 24 | 30 | 28 | 27 | 29 | 27 | 21 | 27 | 27 | 25 | 27 | 22 | 18 | 20 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | SSE 11 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | E 7 | E 7 | S 11 | E 6 | E 7 | ESE 8 | S 6 | S 8 | S 8 | S 12 |
270 | 121 | 406 | 318 | 238 | 229 | 202 | 163 | 99 | 75 | 75 | 54 | 39 | 21 | 78 | 106 | 75 | 52 | 165 | 124 | 262 | |
Swell 2 Height (m) Direction Period (s) | SSE 11 | ESE 13 | SSE 11 | SSE 10 | S 10 | SSE 10 | SSE 9 | S 9 | S 9 | S 10 | S 9 | S 9 | SSW 3 | SW 4 | S 10 | S 9 | S 8 | E 7 | E 8 | E 7 | E 7 |
161 | 16 | 88 | 83 | 52 | 33 | 17 | 6 | 7 | 2 | 2 | 2 | 1 | 1 | 16 | 24 | 5 | 40 | 28 | 17 | 9 | |
Swell 3 Height (m) Direction Period (s) | ESE 13 | — | ESE 12 | — | — | — | — | S 11 | — | S 8 | SE 13 | SE 13 | S 12 | SE 12 | S 7 | — | S 15 | S 8 | — | S 16 | — |
16 | — | 15 | — | — | — | — | 2 | — | 1 | 7 | 7 | 11 | 6 | 4 | — | 4 | 1 | — | 5 | — | |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 8 | E 8 | — | — | E 8 | — | — | — | — | — | — | SW 3 | E 8 | — | SSW 3 | S 5 | — | — | — | — |
355 | 308 | 531 | — | — | 418 | — | — | — | — | — | — | 1 | 55 | — | 1 | 37 | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 28 | 0 | 0 | 95 | 0 | 0 | 32 | 0 | 0 | 75 | 53 | 91 | 59 | 0 | 0 | 317 | 0 | 0 | 28 | 25 |
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.











