
Surf Forecasts:
Atlantida surf forecast from 9 Aug 2026:
- Best quality surf: Sunday 9 Aug, 6PM (local time) - 7ft (2.1m), 10s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 10 Aug, 9AM (local time) - 7.5ft (2.3m), 12s period, S swell with 1,444 kJ wave energy.
- Next surfable swell (1★+): Sunday 9 Aug, 12PM (local time) - 5.5ft (1.7m), 10s 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 Sunday (Aug 09) at 12PM. The primary swell is predicted to be 1.7m and 10s period. 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 2.3m 12s and forecast to arrive on Monday (Aug 10) at 9AM. 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 8s period and expected on Sunday (Aug 09) at 12PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sun 9th Aug) | 5.5ft (1.7m) 10s |
| Best Surf | 6PM (Sun 9th Aug) | 7ft (2.1m) 10s |
| Most Powerful | 9AM (Mon 10th Aug) | 7.5ft (2.3m) 12s |
Table - best surf conditions forecast for Atlantida over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on offer for Atlantida over the next couple of weeks.
The week kicks off with a bit of a mixed bag, but there’s a serious standout for the experienced crew if you’re willing to wait a few days. Sunday morning’s got some 7ft swell from the SSW, but it’s a short 8 seconds and the wind is cross-off, so it’s a bit average. The afternoon drops off a bit. The real buzz starts Monday morning, the 10th of August. That’s when we get a solid 8ft groundswell from the S, with a nice 12 second period, and a clean cross-off breeze. The wave energy is cooking at 2102 (moderate to strong), so this is for experienced surfers only. It’s a bit too much for beginners, but if you’ve got the skill, that’s the best session of the week right there. The tide might be a factor, but the conditions are described as excellent.
The rest of the week is a bit of a struggle. Tuesday through Wednesday are mostly cross-on or cross winds, with the swell hanging around 5ft to 6ft, but the period stays at 12 seconds, which is good for shape. The wind is just not playing ball. The water temperature is about average for this time of year, nothing unusual.
Now, keep your eyes peeled for Thursday morning, the 13th of August. The swell drops a touch to 5ft, but the period stretches out to a very long 14 seconds – that’s proper groundswell energy. And the wind is glassy, absolutely still. That’s a recipe for some clean, powerful lines, though it’ll be a bit better for a point or reef than a beach break. Wave energy is still strong at 1378. That afternoon stays clean with a cross-off. That’s your second standout.
Friday the 14th morning is marginal, and the wind turns onshore in the afternoon, ruining it. The weekend gets messy with strong onshore winds and a short-period windswell, not worth paddling out for. Monday the 17th and Tuesday the 18th mornings look promising with offshore or glassy conditions, but the swell is small, around 4ft to 5ft, and the period is short at 8 seconds. It’s clean, but small.
Late in the window, around Friday the 21st of August, we get a fun little pulse: 6ft from the ENE, but with a short 8 second period and a solid offshore wind from the WNW at 15 mph. That’ll be clean and hollow, but won’t have much grunt. Saturday the 22nd morning has a bit more size at 6ft from the SSE, with a clean cross-off, but again the period is short, so it’ll be a bit crumbly.
Overall, the two true standouts are Monday morning the 10th of August for the big, clean groundswell (experienced only), and Thursday morning the 13th of August for the glassy, long-period lines. The rest of the period is a lot of waiting for the wind to behave.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Sat night, min 10°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 54mm), heaviest during Wed afternoon. Very mild (max 16°C on Thu morning, min 11°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | ||||||||||||||
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 12 | SSW 8 | SSE 10 | SSE 12 | S 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 14 | SSE 14 | SSE 13 | SSE 12 | SSE 13 | SSE 12 | E 7 |
Wave Graph | |||||||||||||||||||
531 | 497 | 659 | 768 | 1444 | 913 | 937 | 811 | 902 | 861 | 603 | 503 | 425 | 879 | 623 | 639 | 878 | 787 | 753 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | cross-off | cross-on | glassy | cross-on | cross-on | cross | cross | cross | cross | glassy | cross-off | cross-on | on | cross-on | cross-on |
High Tide | 1:31AM0.28m | 2:07PM0.65m | 2:13AM0.26m | 3:04PM0.66m | 9:08PM0.29m | 4:01PM0.63m | 10:38PM0.37m | 3:20AM0.22m | 4:58PM0.58m | 11:34PM0.46m | 1:25PM0.35m | 00:23AM0.53m | 1:32PM0.37m | 6:51PM0.42m | |||||
Low Tide | 9:57PM0.12m | 5:21AM0.09m | 11:05PM0.16m | 6:21AM0.01m | 8:13PM0.29m | 7:11AM-0.05m | 8:18PM0.32m | 7:56AM-0.08m | 8:41PM0.33m | 8:37AM-0.08m | 2:18PM0.34m | 9:08PM0.32m | 9:16AM-0.05m | 3:50PM0.29m | 9:36PM0.30m | ||||
— | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | |
— | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | |
mm | — | — | — | — | — | — | — | — | — | 10 | 6 | 15 | 2 | 5 | 1 | 11 | 2 | 2 | 1 |
Temp °C | 14 | 13 | 14 | 11 | 12 | 13 | 12 | 14 | 13 | 13 | 13 | 13 | 15 | 16 | 16 | 15 | 16 | 16 | 16 |
Feels °C | 10 | 9 | 9 | 8 | 8 | 9 | 10 | 10 | 9 | 11 | 11 | 11 | 16 | 17 | 15 | 13 | 15 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SSE 12 | S 8 | SSE 10 | SSE 12 | S 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 14 | SSE 13 | SSE 12 | SSE 13 | SSE 12 | SSE 12 |
531 | 219 | 659 | 768 | 647 | 913 | 937 | 811 | 902 | 861 | 603 | 503 | 259 | 879 | 623 | 639 | 878 | 787 | 374 | |
Swell 2 Height (m) Direction Period (s) | ENE 7 | SSE 11 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 8 | ENE 8 | — | — | E 6 | SSE 14 | ENE 6 | — | — | — | — | — |
59 | 230 | 12 | 11 | 11 | 11 | 16 | 27 | 13 | — | — | 72 | 425 | 16 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | ENE 8 | — | E 13 | — | — | — | — | — | — | — | NE 8 | SE 6 | — | — | — | — | — | — |
— | 24 | — | 4 | — | — | — | — | — | — | — | 2 | 56 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | WSW 4 | SSW 8 | — | — | S 12 | — | — | — | ENE 3 | ENE 4 | E 5 | ENE 6 | ESE 6 | SE 7 | SE 7 | ESE 7 | E 7 | E 7 | E 7 |
13 | 497 | — | — | 1444 | — | — | — | 3 | 14 | 71 | 109 | 204 | 483 | 452 | 330 | 205 | 408 | 753 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 45 | 190 | 180 | 0 | 0 | 209 | 0 | 39 | 39 | 39 | 39 | 18 | 39 | 0 | 0 | 180 | 209 | 230 | 313 |
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.











