Surf Forecasts:
Balneario Sao Jose surf forecast from 19 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 6AM (local time) - 5ft (1.6m), 14s period, S swell with glassy winds.
- Most powerful swell: Monday 24 Aug, 3PM (local time) - 7ft (2.1m), 14s period, SSE swell with 1,704 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 3AM (local time) - 2.5ft (0.8m), 8s period with ESE 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 Wednesday (Aug 19) at 3AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.1m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Balneario Sao Jose in the next 16 days are 2.1m 14s and forecast to arrive on Monday (Aug 24) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Thursday (Aug 20) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 19th Aug) | 2.5ft (0.8m) 8s |
| Best Surf | 6AM (Tue 25th Aug) | 5ft (1.6m) 14s |
| Most Powerful | 3PM (Mon 24th Aug) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's have a look at what's on the table for Balneario Sao Jose over the next couple of weeks. I gotta be straight with you, this stretch is gonna be a tough one. It's a beach and pier setup exposed to the swell, and for the first week or so, we're really not looking at much to get excited about.
We kick off on Wednesday the 19th with tiny 2ft waves from the ESE at a short 8-second period. Combined energy is a weak 61 – barely a pulse. Morning's glassy with a NNW breeze, so that's one positive, but the overall quality is very ordinary. Don't get your hopes up.
The whole weekend and into next week looks poor. Thursday the 20th is flat with 2ft waves, and even though the wind is calm, there's just nothing there. Friday brings a bit of a bump from the SSW, up to 5ft by the afternoon, but that's a short-period windswell (7 seconds) with onshore wind, making for poor conditions. The combined energy spikes to 448, but it's all messy.
Saturday the 22nd is a little better, with 5ft to 5ft of S swell, period up to 10 seconds, and combined energy at 450. But we've got onshore wind from the SE and SSE, so it's marginal at best. The same story continues Sunday and Monday: bigger swell comes in but with cross-onshore wind and 12 to 14-second period, energy jumps to 609 then a whopping 1704 – that's strong energy. But the wind just kills it.
Then, we get a window. Tuesday morning the 25th is the standout. We're looking at a solid 5ft of S swell with a nice 13-second period – that's proper groundswell. The combined energy is a strong 974. The wind is from the NE, which is cross-offshore here, and the forecast says "expect very good surf conditions". This is your best bet for the entire forecast. We could see some peaky, lined-up waves.
Wednesday morning the 26th also looks promising, with 6ft from the east, an 8-second period, and glassy conditions from a light NE breeze. Combined energy is 790. That's another session to circle on the calendar. Clean, glassy surf.
After that, things quickly go pear-shaped again. Through the end of August and into September, we're back to onshore winds, short-period junk, and very ordinary to poor surf. The first few days of September show a bit of size again – 6ft on the 2nd – but it's from the SE with short period and cross-onshore wind, so it'll be a messy, choppy, blown-out mess.
The main advice? Don't waste your time for the first week. Clean your board, do your stretches, and pencil in Tuesday the 25th and maybe the 26th. That's your only real chance for a good one. The rest is for kite surfers if the wind's right, not for us paddle surfers.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Wed morning, min 18°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 20°C on Sun morning, min 17°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 | ESE 8 | E 7 | E 7 | E 7 | E 5 | SSW 9 | S 7 | S 6 | S 10 | S 10 | S 8 | S 8 | S 8 | S 11 | SSE 12 | SSE 14 | SSE 14 |
Wave Graph | |||||||||||||||||||
94 | 58 | 58 | 38 | 25 | 24 | 16 | 79 | 229 | 75 | 431 | 349 | 169 | 105 | 105 | 275 | 608 | 1704 | 1652 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | glassy | cross-on | cross | glassy | cross | cross-off | cross-on | on | cross-on | on | on | cross | cross | on | cross-on | cross-on | cross-on | cross |
High Tide | 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 | 1:25PM1.04m | 00:39AM0.91m | 1:40PM1.14m | 1:05AM1.05m | ||||||
Low Tide | 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 | 6:06AM0.35m | 6:57PM0.51m | 6:51AM0.22m | 7:27PM0.41m | ||||||
— | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | |
— | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 26 | 29 | 26 | 20 | 25 | 26 | 25 | 23 | 21 | 18 | 19 | 19 | 17 | 20 | 19 | 18 | 17 | 17 | 18 |
Feels °C | 26 | 30 | 27 | 21 | 26 | 27 | 23 | 23 | 20 | 18 | 19 | 19 | 17 | 19 | 18 | 17 | 15 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | E 7 | E 7 | SSW 4 | E 5 | ESE 7 | S 6 | S 6 | S 10 | S 10 | S 8 | S 8 | S 8 | S 11 | SSE 12 | SSE 14 | SSE 14 |
94 | 58 | 58 | 38 | 25 | 2 | 15 | 60 | 140 | 75 | 431 | 349 | 169 | 105 | 105 | 275 | 608 | 1704 | 1652 | |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 9 | S 9 | SW 4 | S 11 | E 7 | E 11 | ESE 8 | E 8 | E 8 | E 7 | E 7 | S 14 | S 13 | S 13 | E 7 | — | — |
2 | 2 | 2 | 2 | 4 | 9 | 15 | 3 | 79 | 48 | 19 | 10 | 4 | 14 | 82 | 130 | 1 | — | — | |
Swell 3 Height (m) Direction Period (s) | SE 8 | S 8 | SE 13 | SE 13 | SE 12 | SE 12 | S 10 | — | — | — | — | — | S 14 | E 7 | E 7 | E 7 | — | — | — |
3 | 1 | 7 | 7 | 6 | 6 | 16 | — | — | — | — | — | 4 | 4 | 4 | 1 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | SSW 2 | WSW 3 | WSW 4 | E 7 | — | SSW 9 | S 7 | — | — | — | — | — | — | — | — | — | ESE 4 |
— | — | 1 | 4 | 9 | 24 | — | 79 | 229 | — | — | — | — | — | — | — | — | — | 42 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 100 | 53 | 317 | 102 | 9 | 47 | 361 | 22 | 32 | 175 | 28 | 17 | 32 | 28 | 28 | 28 | 32 |
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.











