Surf Forecasts:
Balneario Sao Jose surf forecast from 27 Aug 2026:
- Best quality surf: Thursday 27 Aug, 12AM (local time) - 6ft (1.9m), 15s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 12AM (local time) - 6ft (1.9m), 15s period, SSE swell with 1,567 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 12AM (local time) - 6ft (1.9m), 15s period with SSE 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 27) at 12AM. The primary swell is predicted to be 1.9m and 15s period with a secondary swell of 0.8m and 5s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Balneario Sao Jose in the next 16 days are 1.9m 15s and forecast to arrive on Thursday (Aug 27) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 27th Aug) | 6ft (1.9m) 15s |
| Best Surf | 12AM (Thu 27th Aug) | 6ft (1.9m) 15s |
| Most Powerful | 12AM (Thu 27th Aug) | 6ft (1.9m) 15s |
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 coming up for Balneario Sao Jose.
The first surf worth paddling out for hits on Wednesday, the 26th of August. We’ve got a solid pulse of long-period groundswell from the SSE, kicking in at about 6ft with a 15-second period. That’s a lot of water moving, and the energy reading is a powerful 1547—that’s a strong, meaty system. The water’s sitting at 70°, which is a touch warmer than usual for this time of year. The wind is glassy, and this is a beach/pier setup, so that long period could make it a bit straight and quick, but for experienced surfers, this is a real standout. The SE swell direction is right on the money for this spot.
The real gems are the Wednesday afternoon and the Thursday morning. Thursday morning the 27th is glassy again, with about 6ft of SSE swell at 14 seconds and energy at 1218. It’s going to be clean, well-shaped, and powerful. If you’ve got the skill, these are the sessions to circle. Thursday afternoon the wind switches to a cross-on breeze and the swell drops a touch, so the vibe fades.
Friday the 28th morning offers a smaller, shorter-period E swell at about 6ft with 8 seconds, and a cross-off wind keeps it clean. The energy is moderate at 759. It’s a good option if you missed the big days, but it’s not the standout.
From Saturday the 29th onward, the surf gets smaller and the conditions get ordinary. We’ve got a run of days with weaker energy, cross-on winds, and dropping swell heights. By Sunday the 30th it’s below 3ft and choppy. There’s a gap of a few days where the surf is poor, with energy readings dropping below 200.
We get a little flicker of hope on Tuesday the 1st of September—morning glassy winds and a 4ft SSE swell, but the period is short at 6 seconds and the energy is only 252. It’s surfable but nothing to write home about.
After that, the forecast turns messy. From the 2nd of September through to the 10th, the wind is mostly cross-on or onshore, and the swell is small and weak. A few sessions show glassy conditions on the 7th and 8th of September, but the swell is tiny—about 1ft and 2ft—with long periods that will just make for weak, slow waves. The energy is low, all under 250. Not really worth suiting up for.
So, to wrap it up: the best on offer is that Wednesday afternoon and Thursday morning window at the end of August. Big, clean, powerful SSE groundswell. After that, it’s a long stretch of small, messy, or blown-out conditions. Keep your eyes on the charts, but don’t get your hopes up for the second week.
Rusty.
Short Range ForecastMostly dry. Warm (max 37°C on Sat morning, min 21°C on Wed afternoon). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Tue morning. Warm (max 38°C on Sat afternoon, min 20°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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) | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | E 8 | E 8 | E 7 | ESE 8 | E 8 | ESE 8 | E 8 | ESE 9 | E 9 | E 8 | SSE 7 | SSE 8 | E 10 | ESE 10 | SSE 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1540 | 1567 | 1158 | 874 | 461 | 358 | 227 | 176 | 151 | 134 | 109 | 69 | 106 | 76 | 50 | 84 | 81 | 127 | 136 | 107 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | glassy | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross | cross-on | cross-on | glassy | glassy | cross-on | cross | glassy | cross | cross-on |
High Tide | 1:56AM1.30m | 2:38PM1.34m | 2:25AM1.39m | 3:02PM1.36m | 2:55AM1.44m | 3:29PM1.36m | 3:28AM1.45m | 3:57PM1.32m | 4:04AM1.42m | 4:28PM1.24m | 4:42AM1.33m | 5:00PM1.13m | ||||||||
Low Tide | 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 | 10:24AM0.16m | 10:09PM0.27m | 10:40AM0.31m | 10:20PM0.31m | |||||||
 |  |  | |  | | | | | | | |  | | | | |  |  |  | |
 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 | 20 | 7 |
Temp °C | 22 | 21 | 25 | 24 | 22 | 29 | 27 | 28 | 37 | 38 | 31 | 24 | 22 | 23 | 26 | 22 | 21 | 22 | 21 | 19 |
Feels °C | 24 | 22 | 25 | 24 | 24 | 30 | 29 | 26 | 35 | 37 | 31 | 24 | 23 | 26 | 28 | 24 | 24 | 25 | 24 | 19 |
Swell 1 Height (m) Direction Period (s) | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | ESE 7 | SSE 12 | E 7 | ESE 8 | E 8 | ESE 8 | E 8 | ESE 9 | E 9 | E 8 | E 8 | SSE 8 | SSE 6 | ESE 10 | SSE 6 |
| kJ | 1540 | 1567 | 1158 | 874 | 461 | 191 | 111 | 176 | 151 | 134 | 109 | 69 | 106 | 76 | 50 | 37 | 75 | 127 | 136 | 107 |
Swell 2 Height (m) Direction Period (s) | ESE 5 | — | E 6 | — | — | SSE 12 | — | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SE 10 | S 6 | S 6 | E 8 | E 9 | E 10 | — | E 10 |
| kJ | 7 | — | 60 | — | — | 210 | — | 69 | 22 | 20 | 10 | 9 | 4 | 15 | 15 | 66 | 81 | 125 | — | 68 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | N 3 | — | — | — | SE 10 | S 7 | — | — | — | — | S 9 |
| kJ | — | — | — | — | — | — | — | — | — | 1 | — | — | — | 4 | 9 | — | — | — | — | 39 |
Wind waves Height (m) Direction Period (s) | — | E 5 | — | E 6 | E 7 | E 8 | E 8 | — | — | — | SW 4 | SSW 5 | SSW 6 | — | — | SSE 7 | — | — | SSE 7 | — |
| kJ | — | 27 | — | 60 | 202 | 358 | 227 | — | — | — | 20 | 31 | 53 | — | — | 84 | — | — | 102 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 28 | 0 | 0 | 28 | 0 | 0 | 0 | 75 | 135 | 47 | 0 | 0 | 43 | 43 | 0 | 9 | 135 |
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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