Surf Forecasts:
Praia de Ubatuba surf forecast from 20 Aug 2026:
- Best quality surf: Monday 24 Aug, 12PM (local time) - 3ft (0.9m), 16s period, SE swell with glassy winds.
- Most powerful swell: Saturday 22 Aug, 12AM (local time) - 6.5ft (2.0m), 10s period, SSE swell with 727 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 9AM (local time) - 2.5ft (0.7m), 7s period with E swell.
Best Forecast Surf Conditions for Praia de Ubatuba this week:
The surf forecast for Praia de Ubatuba over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 9AM. The primary swell is predicted to be 0.7m and 7s period with a secondary swell of 0.1m and 12s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Praia de Ubatuba in the next 16 days are 2.0m 10s and forecast to arrive on Saturday (Aug 22) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Friday (Aug 21) at 3PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 20th Aug) | 2.5ft (0.7m) 7s |
| Best Surf | 12PM (Mon 24th Aug) | 3ft (0.9m) 16s |
| Most Powerful | 12AM (Sat 22nd Aug) | 6.5ft (2.0m) 10s |
Table - best surf conditions forecast for Praia de Ubatuba over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for the coming stretch at Praia de Ubatuba. It’s a pretty slow start, and honestly, the first few days are a bit of a write-off for any decent paddle. The swell is small and messy, and the winds are all over the place. We’re looking at a gap of no real surf action from Thursday, the 20th of August, all the way through to Sunday, the 23rd. The waves are tiny, and the wind is mostly cross or onshore, making for poor conditions.
Finally, things start to look up on Monday, the 24th of August. The morning is still a bit marginal with a cross-on breeze, but the afternoon is where it’s at. We get a glassy, clean surface with a 3ft swell from the southeast. The period is a very long 16 seconds, which is proper groundswell energy – you’ll feel the power in the water, with combined swell energy sitting at 499 (moderate). That long period will make the waves a bit more lined up, but on a beach break like this, it might be a little straight. Even so, this is the standout session of the whole run. The water is about average for this time of year, so no wetsuit worries.
Following that, Tuesday the 25th is a drop-off, with smaller surf and cross-onshore winds again. But then Wednesday the 26th offers another solid morning. It’s glassy, 2ft of that same long-period 16-second southeast swell, with combined energy still at 253 (moderate). The waves will be clean and fun for a smaller board. Thursday the 27th morning is also a good shout with glassy conditions and 2ft swell from the southeast at 14 seconds.
The rest of the outlook into the second week is a bit of a mixed bag. We get some glassy mornings on the 28th and 29th of August, but the swell is smaller and shorter-period. The 30th of August has a clean morning with offshore winds and 2ft easterly swell, but it’s nothing to write home about. After that, from the 31st of August into early September, the wind turns nasty from the south and southeast, bringing in a lot of chop and rain, and the swell gets bigger but blown out. The 4th of September has a 6ft swell from the east-northeast, but with strong onshore wind, it’s a mess. That setup looks more interesting for kite surfing than paddling.
So, for the best wave, make sure you’re in the water on Monday afternoon, the 24th of August. That’s the one.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat morning. Warm (max 22°C on Fri afternoon, min 15°C on Sat morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sat night. Very mild (max 16°C on Mon afternoon, min 14°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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) | E 8 | E 7 | E 7 | E 7 | ENE 7 | E 7 | SSE 10 | SE 10 | SE 10 | SE 10 | SE 12 | SE 13 | SE 14 | SE 14 | SE 16 | SE 15 | SE 14 | SE 13 | SE 13 |
Wave Graph  | |||||||||||||||||||
 kJ | 42 | 54 | 39 | 26 | 16 | 15 | 727 | 124 | 102 | 25 | 37 | 109 | 147 | 289 | 498 | 305 | 192 | 144 | 106 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | cross | cross-off | cross-off | cross-on | on | on | cross-on | on | cross-on | on | on | cross-on | glassy | glassy | cross-off | cross | cross-off |
High Tide | 8:16AM0.89m | 3:35PM0.79m | 8:15PM0.78m | 4:21AM0.59m | 3:08PM0.78m | 9:53PM0.78m | 11:24AM0.96m | 11:16PM0.86m | 12:24PM1.07m | 00:13AM0.98m | 1:05PM1.18m | 00:56AM1.11m | 1:41PM1.28m | 1:33AM1.23m | |||||
Low Tide | 11:50PM0.37m | 12:09PM0.63m | 6:01PM0.74m | 5:01AM0.59m | 1:12PM0.76m | 6:41PM0.65m | 6:06AM0.46m | 7:09PM0.56m | 6:44AM0.34m | 7:33PM0.48m | 7:14AM0.23m | 7:53PM0.42m | 7:40AM0.13m | 8:09PM0.38m | |||||
 |  |  |  | | |  |  | |  |  | | | | | | | | | |
 | — | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:35 | — | — | 6:33 | — | — |
 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — |
mm | — | — | — | — | — | — | — | 1 | 1 | 3 | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 20 | 21 | 21 | 22 | 17 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 15 | 16 | 16 |
Feels °C | 20 | 22 | 20 | 22 | 17 | 18 | 14 | 13 | 12 | 13 | 13 | 12 | 10 | 13 | 15 | 15 | 14 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 7 | E 7 | E 7 | ENE 7 | E 7 | SE 5 | SE 10 | ENE 8 | SE 5 | SE 12 | E 7 | SE 14 | SE 14 | SE 16 | SE 15 | SE 14 | SE 13 | SE 13 |
| kJ | 42 | 54 | 39 | 26 | 16 | 15 | 30 | 124 | 23 | 11 | 37 | 4 | 147 | 289 | 498 | 305 | 192 | 144 | 106 |
Swell 2 Height (m) Direction Period (s) | SSE 5 | E 12 | SE 5 | SE 5 | S 6 | SSW 3 | E 8 | E 8 | ENE 8 | SE 10 | SE 5 | ENE 7 | E 7 | SE 4 | E 7 | E 4 | ENE 4 | ENE 4 | ENE 5 |
| kJ | 17 | 3 | 4 | 4 | 1 | 1 | 44 | 33 | 54 | 25 | 7 | 5 | 1 | 8 | 1 | 1 | 1 | 3 | 9 |
Swell 3 Height (m) Direction Period (s) | E 13 | S 11 | E 12 | E 12 | E 11 | S 8 | SE 11 | — | — | ENE 8 | E 7 | — | — | E 7 | — | E 6 | E 6 | — | SE 16 |
| kJ | 3 | 2 | 3 | 3 | 2 | 1 | 55 | — | — | 12 | 4 | — | — | 1 | — | 1 | 1 | — | 42 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 3 | — | SSE 10 | — | SE 10 | — | — | SE 13 | SE 4 | — | — | — | — | — | ENE 5 |
| kJ | — | — | — | — | 5 | — | 727 | — | 102 | — | — | 109 | 9 | — | — | — | — | — | 25 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 0 | 691 | 35 | 36 | 76 | 54 | 94 | 186 | 54 | 54 | 238 | 64 | 64 | 0 | 0 | 0 | 4 | 0 |
Best forecast wave conditions in Santa Catarina - Norte | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Praia de Ubatuba Surf forecast
The above surf forecast table for Praia de Ubatuba provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Praia de Ubatuba can be found by selecting the local surf guide option on the grey menu. Our Praia de Ubatuba 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 de Ubatuba) 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 de Ubatuba 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 de Ubatuba is 12 km (7 miles) from Sao Francisco do Sul. If you plan a holiday in Santa Catarina - Norte, look for hotels and other accommodation in Sao Francisco do Sul. Sao Francisco do Sul has rooms for a wide range of budgets as well as car hire and transport links.
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