Surf Forecasts:
Balneario Sao Jose surf forecast from 27 Aug 2026:
- Best quality surf: Thursday 27 Aug, 9PM (local time) - 4.5ft (1.3m), 13s period, SSE swell with cross-offshore winds.
- Most powerful swell: Wednesday 2 Sep, 9AM (local time) - 7ft (2.1m), 12s period, S swell with 1,335 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 9PM (local time) - 4.5ft (1.3m), 13s 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 9PM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 1.5m and 6s. 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 2.1m 12s and forecast to arrive on Wednesday (Sep 02) at 9AM. 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+) | 9PM (Thu 27th Aug) | 4.5ft (1.3m) 13s |
| Best Surf | 9PM (Thu 27th Aug) | 4.5ft (1.3m) 13s |
| Most Powerful | 9AM (Wed 2nd Sep) | 7ft (2.1m) 12s |
Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.
The Lowdown
Alright, Rusty here. Let's take a look at what Balneario Sao Jose has cooking for us over the next couple of weeks.
Right off the bat, there’s a bit of a lull to start. The first real action we see is on Thursday morning, the 27th of August. It’s not a bad morning, with a solid 6ft swell from the SSE and a very long 14 second period, packing a whole lot of energy. The water is a touch warmer than normal at 70°, which is nice. The wind is glassy out of the NE, so it’ll be clean. But that’s a big, long-period groundswell hitting an exposed beach setup, meaning it’ll be powerful, a bit heavy, and definitely one for experienced surfers only. Not a beginner spot that day.
Thursday afternoon takes a turn. The swell drops to 5ft and the wind swings to a cross-onshore, making things choppy and marginal. We skip Friday and Saturday as they offer small, short-period windswell and ordinary conditions. The wind stays clean early Friday morning with 5ft from the east, but it’s only 7 seconds of period, so it’ll be a bit weak and crumbly.
Then we hit a dry spell. From Sunday, the 30th of August, right through to Tuesday, the 1st of September, the surf is poor. Tiny waves, weak energy, and onshore winds. Not worth your time. Wednesday the 2nd of September sees a spike again – a 7ft SSE swell with a 12 second period and a huge punch of energy. This is big for the area. But it comes with a strong onshore wind, making it a messy, blown-out affair. Friday morning the 4th and Saturday the 5th offer little more than knee-high leftovers.
Now, here’s where we get the standout. The 10th of September, Thursday morning, looks bloody good. A clean 6ft swell from the SSE, with a short 7 second period, but glassy winds from the ENE. The energy is solid. That combo will give you fun, punchy waves without the crazy power of a groundswell. Then later that same Thursday afternoon, we get a second treat – a 3ft, 12-second S swell that is absolutely glassy. It’s small, but that long period will wrap in nicely.
Following that, Friday the 11th of September morning and afternoon are both top-notch. You’ve got a 4ft S groundswell with a 12-second period, clean offshore breezes in the morning, and flat-out glass in the afternoon with a big energy reading. For such a small-looking wave height, that’s some serious push. That Friday is the moment to clear the calendar.
Remember, this is a beach and pier setup, so those long-period swells will be a bit shifty, but when the wind is right, it can be a blast. Overall, the pick of the litter is that 6ft SSE on the morning of the 10th, and the long-period S swell on the afternoon of the 11th. Get on it.
- Rusty
Short Range ForecastMostly dry. Warm (max 37°C on Sat morning, min 21°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 29mm), heaviest during Tue morning. Warm (max 26°C on Sun morning, min 18°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | SSE 14 | SSE 14 | SSE 13 | E 7 | E 7 | E 7 | E 7 | ESE 8 | E 8 | E 8 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | SSE 8 | S 12 | S 12 | S 11 |
Wave Graph | |||||||||||||||||||||
1158 | 874 | 461 | 243 | 173 | 181 | 210 | 94 | 118 | 57 | 101 | 76 | 55 | 60 | 81 | 87 | 120 | 283 | 1335 | 880 | 629 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | glassy | cross-on | cross-off | cross-off | glassy | off | cross-on | cross-on | cross-off | cross-on | glassy | cross-on | glassy | cross | on | on | on | cross-on |
High Tide | 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 | 5:25AM1.21m | 5:34PM1.00m | ||||||||
Low Tide | 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 | 10:47AM0.47m | 10:34PM0.36m | ||||||||
6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | |
— | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 13 | 10 | 3 | — | — | — |
Temp °C | 25 | 25 | 22 | 28 | 27 | 28 | 37 | 37 | 31 | 26 | 22 | 21 | 25 | 21 | 22 | 22 | 22 | 19 | 20 | 20 | 18 |
Feels °C | 25 | 25 | 23 | 28 | 29 | 27 | 36 | 37 | 30 | 27 | 24 | 23 | 27 | 24 | 24 | 25 | 23 | 19 | 18 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | SSE 14 | SSE 14 | SSE 13 | E 7 | SSE 12 | E 7 | E 7 | ESE 8 | E 8 | E 8 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 9 | SSE 7 | SSE 8 | S 12 | S 12 | S 11 |
1158 | 874 | 461 | 134 | 145 | 181 | 131 | 94 | 118 | 57 | 101 | 76 | 55 | 60 | 81 | 87 | 58 | 283 | 1335 | 880 | 629 | |
Swell 2 Height (m) Direction Period (s) | E 6 | — | — | SSE 12 | — | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSW 5 | S 5 | S 9 | S 6 | S 6 | E 10 | E 10 | ESE 9 | E 9 | E 9 |
54 | — | — | 210 | — | 68 | 22 | 20 | 10 | 9 | 9 | 14 | 8 | 2 | 18 | 39 | 120 | 68 | 29 | 15 | 13 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SE 10 | S 10 | S 10 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | 4 | 2 | 2 | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | E 6 | E 7 | E 7 | E 7 | — | E 7 | — | — | SW 5 | SSW 5 | — | — | S 5 | — | — | — | — | — | — | — |
— | 124 | 173 | 243 | 173 | — | 210 | — | — | 42 | 39 | — | — | 29 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 59 | 0 | 0 | 28 | 0 | 0 | 0 | 0 | 135 | 44 | 0 | 48 | 0 | 19 | 0 | 17 | 48 | 152 | 32 | 28 |
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.











