Surf Forecasts:
Balneario Sao Jose surf forecast from 26 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 9AM (local time) - 3.5ft (1.1m), 16s period, SSE swell with glassy winds.
- Most powerful swell: Thursday 27 Aug, 12AM (local time) - 6ft (1.9m), 15s period, SSE swell with 1,588 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 12AM (local time) - 4.5ft (1.4m), 12s 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 Wednesday (Aug 26) at 12AM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.7m and 5s. 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 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 26th Aug) | 4.5ft (1.4m) 12s |
| Best Surf | 9AM (Wed 26th Aug) | 3.5ft (1.1m) 16s |
| 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, Rusty here again, this time in feet and miles for the imperial crew.
Our main spot is Balneario Sao Jose. Tuesday afternoon is kicking off right. We’ve got a 5 foot swell from the south with a 13-second period – proper groundswell with moderate energy (780). The wind is glassy out of the east-northeast, so it’ll be sheet glass. Water temp is 70°, a touch warmer than usual for this time of year. For an intermediate surfer, this is a standout window. It’s an exposed beach/pier setup, so it can be a bit dumpy, but with no wind, it’s clean fun.
Wednesday morning brings the best of the first week. Swell is 4 feet from the south-southeast but the period is a massive 16 seconds – very long period groundswell. Energy is strong at 1016. Wind is dead calm, glassy. This is expert territory; it will be hollow and powerful. The bar will be working like a reef. This is the session to circle.
Wednesday afternoon gets bigger to 6 feet, period 15 seconds, energy at 1551, but the wind goes onshore and it’s messy. Skip it.
Thursday morning is another beauty. Clear skies, glassy northeast wind, 6 foot SSE swell at 14 seconds, energy at 1387. Excellent for advanced surfers – clean, powerful, lined up.
Friday morning is still solid with a 6 foot east swell, but the period drops to 8 seconds. Glassy wind keeps it clean, but the waves will be a bit crumbly.
From Saturday afternoon through Monday, things go flat. Saturday morning has a weak 4 foot east swell with light offshore wind – just surfable. Sunday and Monday are 3 feet or less, with onshore wind. That’s a 3-4 day lull.
Tuesday the 1st of September bumps up to 3 feet from the south, but with heavy rain and messy wind – no good.
Wednesday the 2nd of September has a 8 foot SSW swell, but cross-onshore wind at 20 km/h makes it choppy and ugly. That’s kite-surf territory, not paddle.
Thursday the 3rd of September – bingo for the second week. Early morning has a 7 foot SSE swell, period 10 seconds, glassy calm, energy at 844. Big, clean, powerful, expert-level. This is your standout.
Friday the 4th of September is still okay at 5 feet from the southeast, glassy in the morning, but smaller.
After that, it fades. Monday the 7th and Tuesday the 8th have some very long period swells (14-15 seconds) but only 3-4 feet, with glassy conditions. Clean but small – a longboard day.
Best bets: Wednesday morning August 26th (huge period, glassy, expert) and Thursday morning September 3rd (big, clean, powerful). Tuesday afternoon August 25th for a fun, clean intermediate session.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Fri morning, min 18°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 38°C on Sat morning, min 20°C on Sun afternoon). Wind will be generally light. | |||||||||||||||||||
Tue 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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 13 | S 12 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 8 | E 9 | E 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 771 | 613 | 582 | 1540 | 1588 | 1158 | 874 | 390 | 443 | 172 | 378 | 205 | 144 | 113 | 103 | 101 | 76 | 51 | 39 | 59 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | on | cross-off | glassy | cross | cross-off | glassy | cross | cross-off | off | off | cross | glassy | on | glassy | glassy | cross-on | cross |
High Tide | 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 | |||||||
 |  | | | |  | |  | | | | | | |  | | | | |  | |
 | — | — | 6:22 | — | — | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 9 |
Temp °C | 19 | 18 | 22 | 22 | 21 | 25 | 24 | 22 | 29 | 29 | 28 | 38 | 38 | 30 | 25 | 23 | 21 | 26 | 21 | 21 |
Feels °C | 21 | 20 | 23 | 23 | 22 | 26 | 25 | 24 | 30 | 31 | 28 | 36 | 37 | 31 | 28 | 25 | 24 | 26 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | S 12 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | E 7 | ESE 8 | SSE 12 | ESE 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | SSE 5 | SSE 5 | SSE 6 |
| kJ | 771 | 613 | 418 | 1540 | 1588 | 1158 | 874 | 208 | 245 | 111 | 173 | 205 | 144 | 113 | 103 | 101 | 76 | 20 | 15 | 41 |
Swell 2 Height (m) Direction Period (s) | — | E 5 | SSE 16 | E 5 | — | E 6 | — | SSE 13 | SSE 12 | — | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | S 5 | E 8 | E 9 | E 9 |
| kJ | — | 21 | 582 | 11 | — | 78 | — | 390 | 210 | — | 47 | 22 | 10 | 10 | 10 | 11 | 13 | 51 | 39 | 59 |
Swell 3 Height (m) Direction Period (s) | — | — | E 5 | — | — | — | — | — | — | — | — | — | SSE 10 | — | — | — | SE 10 | S 6 | S 6 | — |
| kJ | — | — | 16 | — | — | — | — | — | — | — | — | — | 20 | — | — | — | 4 | 1 | 11 | — |
Wind waves Height (m) Direction Period (s) | E 4 | — | — | — | E 5 | E 6 | E 6 | E 7 | E 8 | E 8 | E 8 | N 3 | NW 3 | WSW 3 | SW 5 | SSW 5 | — | — | SE 6 | — |
| kJ | 9 | — | — | — | 42 | 151 | 92 | 294 | 443 | 172 | 378 | 3 | 2 | 7 | 23 | 31 | — | — | 19 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 55 | 0 | 0 | 28 | 0 | 0 | 28 | 0 | 0 | 0 | 53 | 0 | 43 | 0 | 0 | 81 | 50 |
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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