Surf Forecasts:
Atlantida surf forecast from 21 Aug 2026:
- Best quality surf: Monday 24 Aug, 3AM (local time) - 8ft (2.4m), 16s period, SSE swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 3AM (local time) - 8ft (2.4m), 16s period, SSE swell with 3,014 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 9PM (local time) - 5ft (1.6m), 11s period with S swell.
Best Forecast Surf Conditions for Atlantida this week:
The surf forecast for Atlantida over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 22) at 9PM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 0.3m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Atlantida in the next 16 days are 2.4m 16s and forecast to arrive on Monday (Aug 24) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 7s period and expected on Wednesday (Aug 26) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sat 22nd Aug) | 5ft (1.6m) 11s |
| Best Surf | 3AM (Mon 24th Aug) | 8ft (2.4m) 16s |
| Most Powerful | 3AM (Mon 24th Aug) | 8ft (2.4m) 16s |
Table - best surf conditions forecast for Atlantida over the next 16 days.
The Lowdown
Right, let’s have a look at what’s cookin’ for Atlantida.
Honestly, mate, the first few days are pretty grim. Friday the 21st and Saturday the 22nd are a write-off—nasty cross-off winds and messy little waves (combined energy of all swells directed here is just 60-455). Not worth paddling out for.
Then, things start to look interesting. Sunday morning the 23rd has a pulse of 6ft SSE swell at a proper 12 seconds (868 energy), and while the wind is cross-off, the surf is shaping up to be very good. It’s a beach break, so that long period might make it a bit straight, but it’s worth a look.
But the real standout, the one you want to lock in, is Monday the 24th. Glassy conditions, a solid 8ft groundswell from the SSE with a super long 15-second period. The combined energy of all swells directed here is pumping at 2515—that’s serious juice. This is excellent surf for experienced surfers. That long period means longer waits between sets, but the waves will have real power. It might be a bit too much for beginners.
After that, the wind turns onshore and the quality drops away for the rest of the week and into the start of September. There’s a little window on Thursday the 27th afternoon where it goes glassy and you get a 6ft wave, but the period is short at 8 seconds so it’ll be a bit soft.
Looking further out, September 2nd (Wednesday) morning has another excellent call for experienced surfers: 7ft from the SE at 10 seconds, with clean cross-off winds and a light breeze (1082 energy). That’s a promising one, but it’s over a week away, so keep an eye on it—long-range calls are always a bit less certain.
The water temp is about average for this time of year at the break. And remember, Atlantida is a beach/pier setup that can get crowded often, so be prepared for company.
Overall, bank on Monday the 24th for the best session. That’s your day.
- Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Thu night. Very mild (max 17°C on Thu night, min 9°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Wed afternoon, min 8°C on Sun night). Winds increasing (calm on Mon morning, fresh winds from the NE by Wed afternoon). | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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) | ENE 7 | S 7 | S 9 | S 9 | S 9 | S 10 | S 11 | SSE 12 | S 12 | SSE 14 | SSE 15 | SSE 14 | SSE 13 | SSE 12 | SSE 12 | SE 15 | SSE 13 | SSE 13 | SE 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 68 | 38 | 258 | 526 | 441 | 431 | 545 | 861 | 1254 | 2096 | 2515 | 1800 | 1094 | 754 | 718 | 649 | 1077 | 946 | 915 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | glassy | on | cross | cross-on | cross-on | cross | cross | cross-on | cross |
High Tide | 11:41PM0.21m | 5:36AM0.33m | 12:09PM0.43m | 00:01AM0.22m | 12:39PM0.46m | 00:11AM0.25m | 1:07PM0.49m | 00:07AM0.28m | 1:35PM0.51m | 11:45PM0.33m | 2:04PM0.52m | 11:43PM0.38m | 2:35PM0.51m | 11:59PM0.43m | |||||
Low Tide | 1:35AM0.19m | 8:08AM0.28m | 3:21PM0.37m | 9:21PM0.18m | 9:40PM0.22m | 4:26AM0.14m | 9:12PM0.26m | 5:37AM0.09m | 7:17PM0.26m | 6:26AM0.03m | 7:27PM0.25m | 7:06AM-0.02m | 7:49PM0.24m | ||||||
 |  |  | |  | |  | | |  | | | | | | | | | | |
 | — | 6:48 | — | — | 6:47 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — |
 | — | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — |
mm | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 13 | 13 | 11 | 11 | 14 | 10 | 13 | 14 | 10 | 10 | 11 | 10 | 13 | 14 | 14 | 16 | 18 | 17 |
Feels °C | 14 | 6 | 7 | 6 | 6 | 8 | 6 | 8 | 8 | 6 | 7 | 8 | 7 | 9 | 10 | 12 | 12 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | ENE 7 | S 7 | S 9 | ENE 8 | S 9 | S 10 | S 11 | SSE 12 | S 12 | SSE 14 | SSE 15 | SSE 14 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 13 | SSE 13 | SE 14 |
| kJ | 68 | 38 | 258 | 7 | 441 | 431 | 545 | 861 | 1254 | 2096 | 2515 | 1800 | 1094 | 754 | 718 | 437 | 1077 | 946 | 915 |
Swell 2 Height (m) Direction Period (s) | S 8 | ENE 7 | ENE 8 | — | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | NE 8 | NE 8 | NE 7 | — | SE 16 | SE 16 | SE 15 | — | SE 16 | — |
| kJ | 10 | 20 | 11 | — | 14 | 15 | 17 | 7 | 7 | 2 | 2 | 2 | — | 69 | 271 | 649 | — | 322 | — |
Swell 3 Height (m) Direction Period (s) | SE 5 | E 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 4 | WSW 4 | WSW 4 | S 9 | W 3 | WSW 3 | WSW 3 | W 3 | — | — | — | — | — | NE 3 | ENE 3 | ENE 4 | NE 5 | ENE 6 | ENE 7 |
| kJ | 30 | 61 | 34 | 526 | 6 | 7 | 3 | 5 | — | — | — | — | — | 2 | 9 | 29 | 70 | 178 | 417 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 18 | 222 | 313 | 222 | 45 | 66 | 0 | 0 | 209 | 0 | 0 | 208 | 39 | 53 | 208 | 39 | 84 | 208 | 208 |
Best forecast wave conditions in Rio Grande Do Sul | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
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Information about the Atlantida Surf forecast
The above surf forecast table for Atlantida provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Atlantida can be found by selecting the local surf guide option on the grey menu. Our Atlantida 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 (Atlantida) 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 Atlantida 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.
Are you planning a holiday in Rio Grande Do Sul? If you are looking for accommodation near Atlantida, camping, hotels and holiday cottages in Rio Grande Do Sul, consider staying in Capao da Canoa which is 8 km (5 miles) away. Other places in and around Rio Grande Do Sul where you can find information about places to rent, and car hire include Tramandai which is 21 km (13 miles) away, Osorio, Rolante and Torres.
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