Surf Forecasts:
Balneario Sao Jose surf forecast from 25 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 3PM (local time) - 6ft (1.9m), 15s period, SSE swell with glassy 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★+): Tuesday 25 Aug, 3PM (local time) - 5ft (1.5m), 13s period with S 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 Tuesday (Aug 25) at 3PM. The primary swell is predicted to be 1.5m and 13s period with a secondary swell of 0.6m and 4s. 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 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. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Aug 29) at 3PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Tue 25th Aug) | 5ft (1.5m) 13s |
| Best Surf | 3PM (Wed 26th 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 on offer at Balneario Sao Jose. The water is sitting at 69.8°, which is a touch warmer than normal for this time of year – a nice little bonus.
We’ve got a solid run of surf coming through, but the standout window is definitely Wednesday afternoon and into Thursday morning. That’s the one to circle. On Wednesday afternoon, the 26th of August, we get a nice 6.2ft swell from the SSE with a period of 15 seconds – that’s proper groundswell, plenty of energy. The wind is dead calm, glassy as, and the energy reading is a strong 1552. It’s excellent for experienced surfers. Thursday morning, the 27th, keeps it going with a 5.6ft SSE swell, 14-second period, and glassy conditions again. The energy is still pumping at 1190. That’s the pick of the whole forecast.
Earlier on, Tuesday the 25th gives us a 5.2ft S swell with 14 seconds, but it’s a bit cross, so it’s not as clean. The water energy is moderate at 941. Thursday afternoon the wind picks up to 9 mph cross, so it gets a bit messy. Then Friday morning, the 28th, we get a 5.9ft swell from the east, but it’s only 7 seconds – short period, so the waves will be a bit crumbly and less powerful, though the glassy wind helps. Energy is 730.
After that, the weekend drops off. Saturday the 29th has some 3.9ft stuff from the ESE with the wind offshore, but it’s small and weak (219). Sunday, the 30th, is poor, with onshore winds and tiny waves. There’s a big gap of ordinary to poor surf from Sunday right through to the end of the first week of September. It’s not looking good.
We do see a flicker of life on the 5th of September, Saturday morning, with a 5.9ft east swell, 8-second period, and a clean cross-off wind. Energy is 639. It’s decent, but not a standout. The 6th of September has some 5.6ft ESE swell with glassy and offshore winds, which is alright, but nothing like that Wednesday-Thursday window.
The best of the whole forecast is without a doubt Wednesday afternoon the 26th and Thursday morning the 27th of August. Go get it.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Warm (max 25°C on Thu morning, min 18°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 37°C on Sat morning, min 20°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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 14 | S 13 | S 12 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | E 7 | E 7 | E 7 | ESE 8 | E 8 | E 9 | E 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 929 | 771 | 613 | 582 | 1540 | 1567 | 1158 | 874 | 461 | 339 | 186 | 275 | 197 | 173 | 158 | 106 | 141 | 106 | 56 | 61 | 85 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | glassy | cross | glassy | cross-off | glassy | cross | cross-off | glassy | cross | cross-off | off | off | cross-off | cross-on | on | glassy | glassy | cross-on | glassy |
High Tide | 1:57PM1.22m | 1:30AM1.18m | 2:16PM1.29m | 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 | ||||||||
Low Tide | 7:55PM0.34m | 8:02AM0.01m | 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 | ||||||||
 |  |  | |  |  |  | |  | | | | | | | | | | | |  | |
 | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:53 | — |
mm | — | — | — | — | 2 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 31 |
Temp °C | 19 | 20 | 18 | 21 | 19 | 20 | 25 | 24 | 22 | 29 | 29 | 27 | 37 | 37 | 31 | 25 | 23 | 21 | 22 | 21 | 21 |
Feels °C | 20 | 21 | 20 | 22 | 22 | 21 | 26 | 25 | 24 | 31 | 31 | 28 | 36 | 37 | 31 | 26 | 25 | 23 | 25 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | S 12 | S 12 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | ESE 7 | SSE 12 | E 7 | ESE 8 | E 8 | E 9 | E 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 |
| kJ | 929 | 771 | 613 | 418 | 1540 | 1567 | 1158 | 874 | 461 | 181 | 147 | 155 | 197 | 173 | 158 | 106 | 141 | 106 | 56 | 61 | 85 |
Swell 2 Height (m) Direction Period (s) | — | — | SSE 16 | SSE 16 | E 5 | E 5 | E 6 | — | — | SSE 12 | — | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SE 10 | SSW 5 | S 10 | S 6 | S 6 |
| kJ | — | — | 151 | 582 | 12 | 18 | 32 | — | — | 210 | — | 68 | 22 | 10 | 10 | 9 | 4 | 14 | 2 | 3 | 27 |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 10 | S 6 | S 9 | — |
| kJ | — | — | — | 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 1 | 2 | — |
Wind waves Height (m) Direction Period (s) | E 4 | E 4 | E 5 | E 5 | — | E 5 | — | E 6 | E 6 | E 7 | E 7 | E 7 | — | NW 3 | — | SW 5 | SSW 5 | — | S 5 | SSW 4 | — |
| kJ | 12 | 12 | 27 | 29 | — | 32 | — | 32 | 130 | 339 | 186 | 275 | — | 2 | — | 47 | 27 | — | 11 | 17 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 0 | 0 | 25 | 0 | 0 | 0 | 28 | 0 | 0 | 28 | 0 | 0 | 0 | 0 | 43 | 35 | 0 | 0 | 50 | 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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