Surf Forecasts:
Praia da Baleia surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 12AM (local time) - 8ft (2.4m), 14s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 9PM (local time) - 8ft (2.4m), 14s period, S swell with 2,341 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 12PM (local time) - 3.5ft (1.1m), 8s period with ESE swell.
Best Forecast Surf Conditions for Praia da Baleia this week:
The surf forecast for Praia da Baleia over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 12PM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.3m and 10s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Praia da Baleia in the next 16 days are 2.4m 14s and forecast to arrive on Monday (Aug 24) at 9PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Thursday (Aug 20) at 9AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Tue 18th Aug) | 3.5ft (1.1m) 8s |
| Best Surf | 12AM (Tue 25th Aug) | 8ft (2.4m) 14s |
| Most Powerful | 9PM (Mon 24th Aug) | 8ft (2.4m) 14s |
Table - best surf conditions forecast for Praia da Baleia over the next 16 days.
The Lowdown
Alright, this is Rusty checkin' in from the beach. Let's have a look at what's on the cards for the next couple of weeks at Praia da Baleia.
To be honest, the first week is a bit of a slow burner. We've got a couple of small, weak days but nothing that'll get your heart racing. The real story is building towards that second weekend. Keep your eyes peeled for Saturday the 22nd of August and beyond.
Gonna be a quiet start though. Tuesday the 18th has surfable waves, but it's pretty ordinary, the swell is weak at 4ft from the ESE with just a short 8-second period. The water temp is 70°, which is about a degree and a half warmer than normal for this time of year, so it's a touch on the warm side. Wednesday and Thursday are tiny, with knee-high dribble and barely any energy. Friday the 21st morning has a clean 3ft wave from the east with an offshore breeze, but it's still short-period and lacking any real punch.
Now, things start to get interesting from Saturday the 22nd of August. The morning is looking good with a glassy 5ft swell from the south and a period of 10 seconds. The combined energy jumps right up (437), and it's the first time we see a "good surf conditions" comment. This is a beginner-friendly size and the glassy conditions are a big plus, so this is a standout window for a clean, easy session.
Sunday the 23rd and Monday the 24th see the swell picking up, but the wind swings onshore. Monday afternoon is pushing 7ft from the south with a long 14-second period and serious energy (2457), but that onshore wind will mess up the surface. That size is getting a bit much for learners. For experienced guys, the power is there, but the conditions aren't doing it any favours.
The real gem looks like Wednesday the 26th of August. The swell drops to a manageable 4ft from the south, but the period is still a solid 12 seconds, meaning good shape and power. And the wind? Clean offshore from the NNW. The combined energy is solid (652), and we're looking at "very good surf conditions". This is the best on offer for the groundswell crew. With that long period, it'll be better on the points and will offer some nice, clean walls.
After that, the surf tails off into small, clean conditions again, perfect for the longboard or a soft-top. The morning of Sunday the 30th of August has a glassy 2ft southerly swell with a long 11-second period and a nice 216 combined energy. A very pleasant little session.
There is one big caveat way out on the 31st of August. We're looking at a big 10ft southerly swell with a massive 2380 combined energy. But the wind is cross-onshore and the report says "marginal". At that size, it's strictly for experts, and the wonky wind will be a battle. A kite surfer might love that raw power, but for us paddle-in surfers, it's a pass.
Overall, feel the pulse on Wednesday the 26th of August for the best combination of size, power, and clean offshore wind. Saturday the 22nd of August morning is your pick if you just want some clean, small waves.
Stay salty,
Rusty
Short Range ForecastMostly dry. Warm (max 32°C on Wed morning, min 19°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Fri night. Warm (max 29°C on Fri morning, min 16°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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) | ESE 8 | E 8 | ESE 7 | E 8 | E 7 | E 7 | E 7 | E 7 | SSW 10 | E 8 | E 8 | S 7 | S 10 | S 10 | S 9 | S 9 | S 9 | S 11 | S 12 | S 14 | S 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 167 | 124 | 73 | 55 | 54 | 37 | 25 | 26 | 33 | 115 | 78 | 209 | 416 | 557 | 341 | 268 | 268 | 585 | 942 | 1804 | 2179 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-off | glassy | on | cross-off | glassy | cross-on | cross-off | off | cross-on | cross | glassy | cross-on | glassy | cross-on | on | glassy | cross-on | cross-on | cross-off |
High Tide | 5:14PM0.92m | 5:50AM0.92m | 5:38PM0.85m | 6:39AM0.80m | 6:07PM0.77m | 8:37AM0.70m | 12:46PM0.75m | 6:56PM0.68m | 1:04PM0.86m | 00:18AM0.70m | 1:25PM0.95m | 00:48AM0.81m | 1:46PM1.03m | 1:12AM0.93m | |||||||
Low Tide | 11:29AM0.42m | 11:24PM0.34m | 11:41AM0.53m | 00:02AM0.39m | 11:06AM0.64m | 2:31AM0.45m | 9:07AM0.70m | 4:40PM0.66m | 4:38AM0.41m | 6:14PM0.58m | 5:54AM0.32m | 6:53PM0.48m | 6:44AM0.20m | 7:23PM0.40m | |||||||
 | |  | | | | | | |  |  |  |  | |  | | | | |  | | |
 | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — |
 | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — | 5:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | — | — | — | — | 1 | 2 | 1 | — |
Temp °C | 30 | 29 | 25 | 32 | 31 | 21 | 26 | 28 | 28 | 29 | 21 | 19 | 19 | 19 | 17 | 19 | 18 | 17 | 18 | 17 | 16 |
Feels °C | 30 | 30 | 25 | 31 | 31 | 22 | 27 | 29 | 26 | 27 | 20 | 18 | 19 | 19 | 17 | 19 | 18 | 18 | 18 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | E 8 | ESE 7 | E 8 | E 7 | E 7 | E 7 | S 11 | ESE 7 | E 8 | E 8 | S 7 | S 10 | S 10 | S 9 | S 9 | S 9 | S 11 | S 12 | S 14 | S 14 |
| kJ | 167 | 124 | 73 | 55 | 54 | 37 | 25 | 10 | 16 | 115 | 78 | 209 | 416 | 557 | 341 | 268 | 268 | 585 | 942 | 1804 | 2179 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 9 | S 9 | S 10 | S 10 | S 10 | SW 4 | SW 4 | SSW 10 | S 9 | SSW 8 | E 8 | E 8 | E 8 | E 7 | S 14 | S 12 | E 7 | E 7 | S 15 | — |
| kJ | 17 | 15 | 7 | 2 | 2 | 2 | 2 | 2 | 33 | 40 | 14 | 48 | 21 | 11 | 4 | 33 | 214 | 1 | 1 | 653 | — |
Swell 3 Height (m) Direction Period (s) | SE 9 | — | S 8 | S 8 | S 8 | SE 13 | SE 12 | SE 12 | SW 5 | S 16 | S 15 | S 14 | — | — | S 16 | E 7 | E 7 | — | — | — | — |
| kJ | 3 | — | 1 | 1 | 1 | 7 | 6 | 6 | 1 | 5 | 4 | 4 | — | — | 5 | 4 | 4 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | WSW 4 | E 7 | E 5 | WNW 2 | S 5 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | 4 | 26 | 29 | 1 | 51 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 6 | 0 | 0 | 9 | 0 | 10 | 2 | 0 | 0 | 75 | 57 | 0 | 39 | 0 | 2 | 6 | 0 | 2 | 2 | 0 |
Best forecast wave conditions in São Paulo | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Praia da Baleia Surf forecast
The above surf forecast table for Praia da Baleia provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Praia da Baleia can be found by selecting the local surf guide option on the grey menu. Our Praia da Baleia 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 (Praia da Baleia) 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 Praia da Baleia 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.
Praia da Baleia is 26 km (16 miles) from Sao Sebastiao. If you plan a holiday in São Paulo, look for hotels and other accommodation in Sao Sebastiao. Sao Sebastiao has rooms for a wide range of budgets as well as car hire and transport links.
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