
Surf Forecasts:
Balneario Sao Jose surf forecast from 5 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 12AM (local time) - 5.5ft (1.7m), 7s period, ESE swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 6AM (local time) - 6.5ft (2.0m), 10s period, S swell with 799 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 12AM (local time) - 2ft (0.6m), 10s 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 Saturday (Sep 05) at 12AM. The primary swell is predicted to be 0.7m and 8s period with a secondary swell of 0.6m and 10s. 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 10s and forecast to arrive on Monday (Sep 07) at 6AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Sep 11) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sat 5th Sep) | 2ft (0.6m) 10s |
| Best Surf | 12AM (Tue 8th Sep) | 5.5ft (1.7m) 7s |
| Most Powerful | 6AM (Mon 7th Sep) | 6.5ft (2.0m) 10s |
Table - best surf conditions forecast for Balneario Sao Jose over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s coming our way at Balneario Sao Jose.
First up, the water is running a touch warmer than normal for this time of year, sitting at 71°F which is a nice little bonus for the early sessions.
The next few days are a bit of a mixed bag, so don’t expect to get straight into it. We’ve got a bit of a wait for the real fun. Friday the 4th is a write-off with poor, choppy conditions. Saturday the 5th starts off glassy with tiny 2-foot swell from the east, but it’s not going to set the world on fire – just a paddle around. Sunday the 6th brings some size, 6-foot from the south, but the wind is on it and it’s messy, so not recommended.
The first real standout window is on Tuesday the 8th. The morning session is looking sweet. We’ve got a clean 6-foot swell from the east, glassy conditions, and the combined energy hits 795 (moderate energy). That’s the pick of the first week, with clean, chest-to-head-high waves and no wind messing things up. It’s a beach/pier setup, so expect some crowds, but the quality should make it worthwhile.
Wednesday the 9th morning is also worth a look. Glassy again, with 5-foot from the east-southeast, and the energy is a solid 299. Good, clean fun. The following days see the swell back off, but there’s a nice long-period groundswell rolling in from the south on Friday the 11th morning. It’s only 2-foot, but the period is a very long 14 seconds, so it’ll have some push. Glassy conditions again, making it a sneaky good session for a longboard or a fish.
Now, hold on to your board for the second week. The standout here is Sunday the 13th and Monday the 14th. We get a solid pulse of southerly swell. Sunday morning sees 8-foot from the south, with an energy reading of 1352 (strong), and the period is 11 seconds. Monday morning is even bigger, hitting 7-foot from the south-southeast with a massive 1744 energy (very strong). This is big, powerful stuff. The wind is light, but the period is 13 seconds, so it’s a proper groundswell. At this size, over 8-foot, it’s strictly for the experienced crew. The beach break might get a bit straight, but for the crew who know where to sit, it’ll be the session of the month.
After that, the swell fades through the middle of the week, with a glassy morning on Wednesday the 16th offering 3-foot from the southeast. The last few days of the outlook are smaller and more ordinary, with a few onshore bumps.
Overall, the best on offer is Tuesday the 8th morning for the clean, punchy 6-foot, and for the big wave hunters, Sunday the 13th and Monday the 14th are the ones to circle. The long-range stuff is promising but less certain, as always.
Rusty.
Short Range ForecastHeavy rain (total 59mm), heaviest during Sun morning. Warm (max 21°C on Sat morning, min 15°C on Sun afternoon). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 38mm), heaviest during Wed morning. Warm (max 23°C on Wed afternoon, min 15°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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 10 | S 6 | S 6 | SSE 6 | SSE 7 | SSE 7 | S 8 | S 10 | S 9 | ESE 7 | ESE 7 | ESE 7 | E 8 | ESE 7 | ESE 7 | ESE 8 | SSE 11 | S 12 | S 15 |
Wave Graph | |||||||||||||||||||
69 | 51 | 41 | 205 | 285 | 197 | 579 | 640 | 325 | 279 | 456 | 365 | 442 | 157 | 125 | 108 | 133 | 104 | 209 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-on | cross-on | on | on | on | cross-on | cross | cross-off | glassy | on | glassy | cross-on | cross-off | cross-off | glassy | cross-on | glassy |
High Tide | 1:31AM0.59m | 1:22PM0.99m | 9:36PM0.70m | 1:31PM1.11m | 00:11AM0.84m | 1:40PM1.20m | 00:41AM1.00m | 1:52PM1.26m | 1:11AM1.16m | 2:09PM1.29m | 1:42AM1.29m | 2:29PM1.30m | 2:13AM1.38m | ||||||
Low Tide | 11:18PM0.54m | 4:35AM0.48m | 6:16PM0.60m | 5:50AM0.33m | 6:59PM0.51m | 6:41AM0.17m | 7:31PM0.44m | 7:22AM0.05m | 7:58PM0.39m | 7:58AM-0.02m | 8:21PM0.35m | 8:28AM-0.04m | 8:39PM0.31m | ||||||
— | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | |
— | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | |
mm | 3 | 2 | 2 | 10 | 21 | 10 | 9 | 2 | — | — | — | — | 2 | 13 | — | 5 | 2 | 16 | 3 |
Temp °C | 20 | 21 | 21 | 20 | 17 | 16 | 16 | 16 | 16 | 16 | 19 | 19 | 18 | 19 | 23 | 21 | 22 | 21 | 20 |
Feels °C | 21 | 24 | 23 | 20 | 16 | 15 | 13 | 15 | 16 | 15 | 19 | 19 | 19 | 21 | 25 | 23 | 25 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | E 8 | S 6 | S 6 | ESE 9 | ESE 8 | SSE 7 | S 8 | S 10 | S 9 | S 9 | SSE 9 | SSE 10 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 7 | S 15 |
69 | 44 | 32 | 25 | 14 | 175 | 422 | 640 | 325 | 203 | 147 | 131 | 259 | 157 | 125 | 99 | 81 | 61 | 209 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | E 8 | E 8 | — | — | S 8 | ESE 6 | ESE 7 | ESE 8 | SSE 8 | — | SSE 13 | S 10 | SSE 9 | SSE 9 | S 12 | SSE 11 | S 12 | ESE 7 |
69 | 51 | 37 | — | — | 51 | 25 | 11 | 11 | 76 | — | 17 | 94 | 66 | 65 | 108 | 133 | 104 | 42 | |
Swell 3 Height (m) Direction Period (s) | S 4 | SSE 10 | SSE 10 | — | — | S 13 | — | — | ESE 6 | — | — | — | SSE 12 | S 15 | SSE 14 | S 9 | SE 14 | SSE 16 | SE 14 |
14 | 41 | 41 | — | — | 4 | — | — | 4 | — | — | — | 15 | 4 | 37 | 44 | 8 | 48 | 7 | |
Wind waves Height (m) Direction Period (s) | — | — | — | SSE 6 | SSE 7 | SSW 7 | S 8 | — | — | ESE 7 | ESE 7 | ESE 7 | E 8 | — | — | — | — | — | E 4 |
— | — | — | 205 | 285 | 197 | 579 | — | — | 279 | 456 | 365 | 442 | — | — | — | — | — | 19 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 66 | 135 | 175 | 1863 | 95 | 28 | 9 | 0 | 0 | 48 | 0 | 28 | 0 | 0 | 0 | 35 | 0 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










