
Surf Forecasts:
Balneario Sao Jose surf forecast from 7 Aug 2026:
- Best quality surf: Friday 14 Aug, 3AM (local time) - 5ft (1.5m), 16s period, SSE swell with glassy winds.
- Most powerful swell: Monday 10 Aug, 6PM (local time) - 6.5ft (2.0m), 13s period, SSE swell with 1,359 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 9AM (local time) - 2ft (0.6m), 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 Friday (Aug 07) at 9AM. The primary swell is predicted to be 0.6m and 8s period with a secondary swell of 0.3m and 9s. 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 2.0m 13s and forecast to arrive on Monday (Aug 10) at 6PM. 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+) | 9AM (Fri 7th Aug) | 2ft (0.6m) 8s |
| Best Surf | 3AM (Fri 14th Aug) | 5ft (1.5m) 16s |
| Most Powerful | 6PM (Mon 10th Aug) | 6.5ft (2.0m) 13s |
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 on offer for Balneario Sao Jose over the next couple of weeks.
Honestly, mate, the first few days are nothing to write home about. We’ve got a bit of swell on Friday the 7th, but it’s tiny—2ft to 2ft from the east with a short 8-second period, and the combined energy is weak (83). The wind is light, but the waves are just too ordinary to get excited about. Saturday morning gets a bit of a bump to 5ft from the south with a 10-second period, but there’s a cross-shore wind, so it’s messy. The real standout on Saturday afternoon is the glassy conditions with 3ft of south swell and a 12-second period, and the combined energy jumps to a moderate 508. That’s a clean, workable wave for a longboard or a funboard.
Sunday the 9th gets a bigger south swell, 4ft to 4ft, with a solid 14-second period, but the wind turns cross to cross-on, so it’s chopped and not great. Monday the 10th sees building swell, up to 7ft from the SSE by the afternoon, with a strong combined energy of 1349, but onshore winds and light rain ruin it. Tuesday and Wednesday stay marginal with onshore winds, even though the swell hangs around 4ft to 6ft.
Now, Thursday the 13th morning is a real beauty. The wind drops to dead calm, glassy. We’ve got 4ft of SSE swell with a 12-second period, and the combined energy is a moderate 554. The conditions are clean and the wave quality is good. But the absolute best of the entire forecast is Friday the 14th morning. That’s the one. The wind is glassy, dead calm, and we’ve got 5ft of SSE swell pushing in with a very long 15-second period. The combined energy is strong at 1211. This is a groundswell, and it’ll be powerful and well-shaped. The break is a beach/pier setup, so with that long period, it might be a bit straight at the beach, but the quality is excellent for experienced surfers.
Saturday the 15th morning has a cross-shore wind, but the afternoon glass-off gives us 5ft of clean SSE swell again. Sunday the 16th stays small and glassy in the morning. Monday the 17th is a write-off with strong onshore winds and a messy 7ft to 8ft swell. But then Tuesday the 18th morning delivers another cracker: 8ft of ESE swell with a 10-second period, a clean offshore wind from the NNW, and combined energy of 1369. That’s big, powerful, and clean—only for experts. The afternoon stays clean with a cross-off wind. Wednesday the 19th morning keeps it clean with 6ft ESE swell, and the rest of the week fades to smaller, glassy conditions through to the 22nd.
So, the standout is Friday the 14th morning for the best combination of clean, glassy conditions and a solid, long-period groundswell. The backup is Tuesday the 18th morning for the big, clean, expert-only surf. The water temperature is about 69°, which is about 2° warmer than usual for this time of year, so it’s a bit on the warm side.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Fri night. Warm (max 29°C on Fri morning, min 18°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 19mm), heaviest on Mon morning. Warm (max 20°C on Wed morning, min 17°C on Mon afternoon). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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) | E 8 | E 8 | E 8 | S 10 | S 12 | S 13 | S 14 | S 13 | S 12 | S 11 | SSE 13 | SSE 13 | S 12 | SSE 12 | S 12 | S 12 | S 13 | SSE 12 | SSE 12 | SSE 12 | SSE 16 |
Wave Graph | |||||||||||||||||||||
41 | 29 | 28 | 386 | 174 | 407 | 526 | 404 | 736 | 566 | 1319 | 1104 | 681 | 793 | 584 | 505 | 824 | 528 | 432 | 418 | 871 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | glassy | cross | glassy | off | cross | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-off | glassy | on | glassy |
High Tide | 9:59AM0.93m | 10:01PM0.75m | 1:09PM1.07m | 00:04AM0.82m | 1:40PM1.19m | 00:53AM0.94m | 2:08PM1.28m | 1:28AM1.07m | 2:35PM1.32m | 2:01AM1.20m | 3:01PM1.32m | 2:33AM1.30m | 3:26PM1.29m | ||||||||
Low Tide | 6:03PM0.55m | 5:54AM0.37m | 7:06PM0.48m | 6:51AM0.22m | 7:52PM0.42m | 7:38AM0.09m | 8:27PM0.40m | 8:18AM-0.01m | 8:56PM0.40m | 8:53AM-0.05m | 9:19PM0.40m | 9:24AM-0.05m | 9:35PM0.40m | ||||||||
6:37 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | |
— | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | |
mm | — | 1 | 5 | — | — | — | — | 1 | 4 | 4 | 3 | 4 | 2 | 2 | 3 | 1 | — | — | — | — | — |
Temp °C | 29 | 26 | 20 | 25 | 26 | 26 | 21 | 20 | 19 | 18 | 17 | 17 | 17 | 17 | 18 | 20 | 20 | 19 | 22 | 21 | 20 |
Feels °C | 29 | 28 | 23 | 27 | 28 | 25 | 22 | 21 | 19 | 18 | 16 | 15 | 16 | 16 | 17 | 21 | 21 | 20 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | S 10 | S 9 | S 13 | S 14 | S 13 | S 12 | S 11 | E 8 | SSE 13 | S 12 | SSE 12 | S 12 | S 12 | S 13 | SSE 12 | SSE 12 | SSE 12 | SSE 16 |
41 | 29 | 28 | 386 | 152 | 407 | 526 | 404 | 736 | 566 | 10 | 1104 | 681 | 793 | 584 | 505 | 824 | 528 | 432 | 418 | 871 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | S 11 | SSE 10 | E 7 | S 12 | SSE 15 | E 5 | E 5 | E 8 | E 8 | ENE 8 | E 12 | E 8 | E 7 | — | SSE 15 | — | — | E 6 | — | E 6 |
15 | 21 | 19 | 17 | 174 | 312 | 21 | 9 | 32 | 10 | 20 | 3 | 5 | 4 | — | 181 | — | — | 40 | — | 35 | |
Swell 3 Height (m) Direction Period (s) | SSE 12 | SSE 8 | SSE 3 | — | S 16 | E 5 | — | — | E 13 | E 13 | — | E 12 | — | — | — | — | — | — | — | — | E 6 |
27 | 7 | 2 | — | 174 | 24 | — | — | 4 | 3 | — | 3 | — | — | — | — | — | — | — | — | 47 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 3 | E 5 | SW 3 | S 5 | — | SE 6 | SSE 13 | ESE 6 | ESE 5 | ESE 5 | ESE 5 | E 5 | E 5 | E 6 | E 6 | E 6 | — |
— | — | — | — | 8 | 40 | 3 | 29 | — | 32 | 1319 | 47 | 33 | 39 | 51 | 62 | 56 | 60 | 82 | 43 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 9 | 19 | 0 | 0 | 152 | 135 | 152 | 411 | 362 | 95 | 28 | 95 | 28 | 17 | 32 | 0 | 0 | 25 | 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.











