Surf Forecasts:
Balneario Sao Jose surf forecast from 10 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 9AM (local time) - 4.5ft (1.4m), 12s period, SSE swell with glassy winds.
- Most powerful swell: Tuesday 11 Aug, 12PM (local time) - 6.5ft (2.0m), 13s period, SSE swell with 1,259 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 9AM (local time) - 4.5ft (1.4m), 12s 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 Wednesday (Aug 12) at 9AM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.1m and 7s. Another secondary swell of 0.7m and 4s is also forecast. 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 13s and forecast to arrive on Tuesday (Aug 11) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Monday (Aug 17) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Wed 12th Aug) | 4.5ft (1.4m) 12s |
| Best Surf | 9AM (Wed 12th Aug) | 4.5ft (1.4m) 12s |
| Most Powerful | 12PM (Tue 11th Aug) | 6.5ft (2.0m) 13s |
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 brewing for Balneario Sao Jose.
We’ve got a solid run of waves coming through, but you’ve gotta pick your moments. The early part of the week is a bit messy with onshore winds, but things clean up nicely mid-week. The standout window is Wednesday the 12th through Saturday the 15th, with a couple of real gems in there.
The water is sitting at 69°, which is a touch warmer than normal for this time of year – nice, you can get away with a thinner suit.
Wednesday morning, the 12th, is looking like the pick of the early run. We’ve got a clean 5ft swell from the SSE, period of 12 seconds, and it’s completely glassy. The combined wave energy is moderate (609). That’s going to be super fun on the beach/pier setup. The swell direction is a good match for the break. Just be aware, this spot can get busy, so expect some company.
Thursday morning, the 13th, is another cracker. Glassy conditions again, with a 4ft swell from the S, period of 12 seconds, and energy at 667. It’s smaller, but the clean conditions will make it a joy. Friday morning, the 14th, is more of the same – glassy, 4ft from the S, 13-second period, energy at 504. Saturday morning, the 15th, keeps the trend going with a glassy 4ft swell from the SSE.
After that, the swell drops right off into the second week. Sunday the 16th is tiny, and from Monday the 17th through to Tuesday the 25th, we’re looking at very small, weak, and short-period windswell. The energy drops into the two-digit range a few times, and the period is often under 8 seconds. There’s a brief uptick on Thursday the 21st with a bigger, longer-period swell from the SSE, but the wind is cross-shore and fresh, so it’s not going to be the cleanest. You might see some bigger lumps, but it’ll be a bit of a battle.
Bottom line: Get on it from Wednesday the 12th through Saturday morning the 15th. After that, it’s a long wait for something decent.
Rusty.
Short Range ForecastModerate rain (total 13mm), heaviest on Mon afternoon. Warm (max 21°C on Wed afternoon, min 16°C on Mon afternoon). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Thu morning, min 18°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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 12 | SSE 13 | S 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | S 12 | SSE 15 | SSE 14 | S 13 | S 13 | SSE 13 | SSE 12 | SSE 12 | S 11 | ESE 8 | SSE 11 | ESE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 773 | 1127 | 878 | 1092 | 1092 | 718 | 589 | 579 | 511 | 341 | 892 | 754 | 490 | 564 | 711 | 545 | 432 | 166 | 119 | 119 | 101 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | cross-on | glassy | cross-on | off | glassy | on | cross-off | glassy | cross-on | glassy | glassy | cross-on | glassy | glassy | on | glassy |
High Tide | 2:08PM1.28m | 1:28AM1.07m | 2:35PM1.32m | 2:01AM1.20m | 3:01PM1.32m | 2:33AM1.30m | 3:26PM1.29m | 3:06AM1.36m | 3:50PM1.25m | 3:38AM1.38m | 4:14PM1.21m | 4:11AM1.35m | 4:37PM1.16m | ||||||||
Low Tide | 8:27PM0.40m | 8:18AM-0.01m | 8:56PM0.40m | 8:53AM-0.05m | 9:19PM0.40m | 9:24AM-0.05m | 9:35PM0.40m | 9:50AM0.01m | 9:45PM0.38m | 10:10AM0.09m | 9:53PM0.35m | 10:26AM0.20m | 10:08PM0.32m | ||||||||
 | |  | | | |  |  |  | | | | | |  | | | | | | | |
 | 6:35 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — |
 | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 | — |
mm | 2 | 3 | 3 | 2 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 16 | 17 | 18 | 18 | 18 | 20 | 21 | 19 | 27 | 24 | 19 | 24 | 23 | 20 | 24 | 24 | 22 | 28 | 26 | 21 |
Feels °C | 17 | 15 | 16 | 18 | 18 | 18 | 21 | 22 | 21 | 28 | 26 | 21 | 25 | 25 | 23 | 26 | 26 | 25 | 30 | 28 | 23 |
Swell 1 Height (m) Direction Period (s) | S 12 | SSE 13 | S 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | S 12 | SSE 15 | SSE 14 | S 13 | S 13 | SSE 13 | SSE 12 | SSE 12 | S 11 | ESE 8 | SSE 11 | ESE 7 |
| kJ | 773 | 1127 | 878 | 1092 | 1092 | 718 | 589 | 579 | 511 | 341 | 892 | 754 | 490 | 564 | 711 | 545 | 432 | 166 | 113 | 119 | 101 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | — | E 7 | — | E 7 | — | E 5 | SSE 15 | E 6 | E 6 | E 7 | ESE 6 | E 6 | E 5 | E 6 | SE 8 | S 11 | ESE 13 | S 10 |
| kJ | 10 | 10 | 5 | — | 4 | — | 1 | — | 43 | 296 | 24 | 15 | 14 | 8 | 7 | 8 | 17 | 65 | 119 | 16 | 78 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | E 12 | — | — | — | — | — | SSE 15 | E 6 | — | — | — | — | — | E 10 | — | E 6 | ESE 13 | ESE 13 | ESE 12 |
| kJ | 30 | 19 | 3 | — | — | — | — | — | 73 | 30 | — | — | — | — | — | 2 | — | 17 | 16 | 16 | 14 |
Wind waves Height (m) Direction Period (s) | — | — | — | E 8 | — | E 7 | E 4 | E 5 | — | — | — | — | — | — | — | — | — | E 6 | — | ESE 8 | — |
| kJ | — | — | — | 4 | — | 4 | 19 | 20 | — | — | — | — | — | — | — | — | — | 44 | — | 99 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 91 | 95 | 95 | 28 | 28 | 28 | 0 | 32 | 0 | 0 | 19 | 0 | 0 | 28 | 0 | 0 | 28 | 0 | 0 | 35 | 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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