Surf Forecasts:
Balneario Sao Jose surf forecast from 24 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 9AM (local time) - 3.5ft (1.1m), 16s period, SSE swell with glassy winds.
- Most powerful swell: Thursday 27 Aug, 3AM (local time) - 6.5ft (2.0m), 15s period, SSE swell with 1,781 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 3PM (local time) - 5ft (1.5m), 13s 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 Tuesday (Aug 25) at 3PM. The primary swell is predicted to be 1.5m and 13s period with a secondary swell of 0.6m and 4s. 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 2.0m 15s and forecast to arrive on Thursday (Aug 27) at 3AM. 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+) | 3PM (Tue 25th Aug) | 5ft (1.5m) 13s |
| Best Surf | 9AM (Wed 26th Aug) | 3.5ft (1.1m) 16s |
| Most Powerful | 3AM (Thu 27th Aug) | 6.5ft (2.0m) 15s |
Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming up for Balneario Sao Jose.
It’s a bit of a slow start, but there’s a solid run of fun surf shaping up mid-week. The best of it looks to be Wednesday the 26th and Thursday the 27th, with nice conditions.
Monday the 24th is a write-off with cross-on wind and 7ft swell, but the energy is extreme (1599). That’s a big, raw ocean. It’s messy though.
Tuesday the 25th gets better. In the afternoon, the wind dies to glassy, with a clean 5ft S swell. That’s a real glimmer of hope.
Wednesday the 26th morning is the standout. Glassy as glass, zero wind, and a long-period 4ft SSE groundswell at 16 seconds. The energy is still strong (1052). That’s a long, clean groundswell – it’ll be better shaped, with long lulls between sets. Perfect for a place like this. The water is 70°, about a touch warmer than normal for this time of year.
Thursday the 27th morning is another beauty. Glassy again, 5ft from the SSE at 14 seconds. Clean lines.
Friday the 28th morning is worth a paddle too. Glassy with 5ft swell, but the period drops short to 7 seconds from the east. Less grunt, but still clean.
After that, the weekend fades. Saturday the 29th has clean offshore wind but the swell drops to 4ft, and by Sunday the 30th it’s choppy and weak. Then we hit a big gap. From Sunday the 30th afternoon right through to about Wednesday the 3rd of September, conditions are poor or marginal. That’s a rough 4-day blank run.
Wednesday the 3rd of September morning brings a return. Glassy, 5ft from the SSE at 11 seconds. Solid, clean, and promising. Then another gap of choppy junk before a couple of clean mornings on the 6th and 4th, but the swell is small.
Overall, Wednesday the 26th morning at Balneario Sao Jose is the real standout. Glassy, 4ft long-period groundswell from the SSE. That’s your window.
- Rusty
Short Range ForecastLight rain (total 8mm), mostly falling on Wed night. Warm (max 22°C on Wed afternoon, min 17°C on Mon afternoon). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Thu afternoon. Warm (max 39°C on Sat afternoon, min 20°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 14 | S 13 | SSE 14 | S 14 | S 13 | S 12 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | E 7 | ESE 7 | E 8 | ESE 8 | ESE 9 | E 9 | ESE 9 | E 9 | ESE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1599 | 1421 | 1512 | 929 | 771 | 613 | 582 | 1367 | 1609 | 1016 | 756 | 454 | 232 | 156 | 283 | 197 | 227 | 162 | 147 | 173 | 141 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | glassy | cross-off | glassy | on | cross-off | glassy | cross-on | off | glassy | cross | cross-off | off | cross-off | cross | cross-on | cross-on | off |
High Tide | 1:40PM1.14m | 1:05AM1.05m | 1:57PM1.22m | 1:30AM1.18m | 2:16PM1.29m | 1:56AM1.30m | 2:38PM1.34m | 2:25AM1.39m | 3:02PM1.36m | 2:55AM1.44m | 3:29PM1.36m | 3:28AM1.45m | 3:57PM1.32m | ||||||||
Low Tide | 7:27PM0.41m | 7:28AM0.10m | 7:55PM0.34m | 8:02AM0.01m | 8:23PM0.28m | 8:34AM-0.05m | 8:50PM0.24m | 9:04AM-0.06m | 9:15PM0.23m | 9:33AM-0.03m | 9:38PM0.23m | 10:00AM0.04m | 9:56PM0.25m | ||||||||
 |  |  | |  |  | | |  |  |  |  | | | | | | | | | | |
 | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — |
 | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — |
mm | 1 | — | 3 | — | — | — | — | — | 4 | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 18 | 19 | 20 | 18 | 21 | 22 | 21 | 23 | 22 | 20 | 27 | 29 | 27 | 38 | 39 | 25 | 24 | 23 | 22 |
Feels °C | 17 | 18 | 18 | 20 | 21 | 19 | 21 | 24 | 23 | 24 | 24 | 22 | 28 | 31 | 28 | 36 | 39 | 27 | 25 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | SSE 14 | S 14 | S 13 | S 12 | S 12 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | ESE 7 | SSE 12 | ESE 8 | ESE 8 | ESE 9 | E 9 | ESE 9 | E 9 | ESE 9 |
| kJ | 1599 | 1421 | 1512 | 929 | 771 | 613 | 418 | 1367 | 1609 | 1016 | 756 | 454 | 131 | 107 | 196 | 197 | 227 | 162 | 147 | 173 | 141 |
Swell 2 Height (m) Direction Period (s) | — | S 16 | — | — | — | E 5 | SSE 16 | E 5 | ESE 5 | ESE 6 | — | — | SSE 12 | — | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SE 9 | SSW 4 |
| kJ | — | 347 | — | — | — | 20 | 582 | 13 | 15 | 34 | — | — | 206 | — | 68 | 22 | 20 | 10 | 9 | 3 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | E 5 | — | — | — | — | — | — | — | — | — | — | — | SSE 10 | SSE 9 | SE 10 |
| kJ | — | — | — | — | — | — | 19 | — | — | — | — | — | — | — | — | — | — | — | 9 | 9 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 4 | E 4 | — | E 5 | E 5 | — | — | E 5 | E 6 | E 7 | ESE 7 | E 8 | — | — | SW 3 | SW 4 | SSW 4 | — |
| kJ | — | — | — | 11 | 13 | — | 33 | 18 | — | — | 55 | 80 | 232 | 156 | 283 | — | — | 2 | 4 | 6 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 32 | 28 | 28 | 25 | 0 | 0 | 0 | 32 | 0 | 0 | 35 | 0 | 0 | 26 | 0 | 0 | 0 | 28 | 47 | 43 | 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.
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