Surf Forecasts:
Atlantida surf forecast from 15 Aug 2026:
- Best quality surf: Monday 17 Aug, 3AM (local time) - 10ft (3.0m), 9s period, ENE swell with cross-shore winds.
- Most powerful swell: Monday 17 Aug, 3AM (local time) - 10ft (3.0m), 9s period, ENE swell with 1,199 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 3AM (local time) - 10ft (3.0m), 9s period with ENE 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 Monday (Aug 17) at 3AM. The primary swell is predicted to be 3.0m and 9s period with a secondary swell of 2.1m and 9s. Another secondary swell of 0.4m and 10s is also forecast. The wind is predicted to be cross-shore as the swell arrives.
The most powerful waves expected at Atlantida in the next 16 days are 3.0m 9s and forecast to arrive on Monday (Aug 17) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Friday (Aug 21) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 17th Aug) | 10ft (3.0m) 9s |
| Best Surf | 3AM (Mon 17th Aug) | 10ft (3.0m) 9s |
| Most Powerful | 3AM (Mon 17th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Atlantida over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s break it down for Atlantida (beach/pier). The next couple of weeks have a slow start, then a couple of clean windows, and one solid swell day near the end.
First week is pretty rough. Saturday and Sunday (15th–16th August) are a total mess – lumpy, onshore wind, waves around 7 ft to 8 ft, moderate energy (725 to 852). Just rain and chop. Not worth it. Monday the 17th is where it gets glassy. A light N wind, 7 ft ENE swell (9 second period), and super clean conditions. Water temp is 61°, about what you’d expect for this time of year. That Monday morning is your first real chance – clean, smooth, and uncrowded. Tuesday (18th) stays clean but smaller at 4 ft. Wednesday (19th) morning is clean with 3 ft, but fading.
Thursday and Friday (20th–21st) are a dead zone – small onshore chop, then a westerly offshore on Friday only brings 2 ft. Don’t bother. Saturday (22nd) picks up to 5 ft, cross-off wind, clean but still only marginal. The real standout is Sunday the 23rd of August. A solid 7 ft S swell, 11 second period, strong energy (1056), clean cross-off winds. That’s quality. For intermediate surfers it’s great, but beginners need to be careful at that size. Expect crowds likely. Long period swell like this will have longer waits between sets but big, clean walls – best at a point or reef, though the beach/pier can handle it on a clean day.
Monday (24th) still shows 5 ft to 5 ft SSE swell, but the wind turns onshore in the afternoon. Tuesday (25th) into Wednesday (26th) gets messy with cross-shore chop again, waves around 5 ft to 5 ft but lumpy. Thursday (27th) and Friday (28th) are poor – cross-shore wind, choppy waves from 5 ft to 7 ft. Saturday (29th) and Sunday (30th) fizzle out to 3 ft to 4 ft of small, messy slop.
So, in short: Monday the 17th morning for clean, glassy smaller waves, and Sunday the 23rd morning for the biggest, cleanest, most powerful swell of the outlook. Sunday the 23rd is the one to circle.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sat night. Warm (max 22°C on Mon morning, min 16°C on Sat morning). Winds decreasing (fresh winds from the NE on Sat afternoon, calm by Mon morning). | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Thu night. Warm (max 22°C on Tue morning, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 9 | SSE 7 | ENE 8 | E 6 | ESE 6 | E 7 | ENE 7 | S 9 | S 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 471 | 653 | 763 | 603 | 795 | 870 | 637 | 488 | 275 | 203 | 189 | 151 | 131 | 132 | 188 | 175 | 90 | 106 | 42 | 56 | 93 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-on | cross | glassy | glassy | cross | cross-off | cross-on | cross | cross-off | cross | cross | cross-on | cross-on | off | off | cross-off | cross-off |
High Tide | 1:57PM0.40m | 7:47PM0.34m | 7:28AM0.20m | 2:26PM0.43m | 8:42PM0.28m | 8:39AM0.23m | 2:56PM0.45m | 9:36PM0.23m | 3:16AM0.52m | 3:26PM0.46m | 10:27PM0.21m | 3:59AM0.46m | 3:55PM0.44m | 11:10PM0.20m | 4:44AM0.39m | 4:19PM0.41m | 11:41PM0.21m | 5:36AM0.33m | 12:09PM0.43m | 00:01AM0.22m | |
Low Tide | 9:54AM0.00m | 4:57PM0.23m | 10:06PM0.27m | 6:16AM0.19m | 5:56PM0.18m | 10:37PM0.24m | 6:45AM0.19m | 6:48PM0.14m | 7:14AM0.21m | 7:34PM0.12m | 7:40AM0.23m | 12:33PM0.31m | 8:16PM0.13m | 8:01AM0.25m | 1:37PM0.35m | 8:52PM0.15m | 8:08AM0.28m | 3:21PM0.37m | 9:21PM0.18m | ||
 | |  |  |  |  |  | | | | |  | | | | | | | |  | | |
 | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — |
 | — | 5:54 | — | — | 5:55 | — | — | 5:55 | — | — | 5:57 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — |
mm | 1 | 2 | 5 | 1 | — | — | — | — | — | — | — | 1 | — | — | 2 | — | 2 | 5 | — | — | 2 |
Temp °C | 16 | 17 | 17 | 19 | 18 | 19 | 22 | 22 | 21 | 22 | 20 | 19 | 20 | 19 | 18 | 18 | 20 | 18 | 17 | 20 | 16 |
Feels °C | 12 | 13 | 14 | 19 | 16 | 19 | 24 | 24 | 21 | 22 | 21 | 21 | 20 | 19 | 18 | 16 | 20 | 20 | 13 | 16 | 13 |
Swell 1 Height (m) Direction Period (s) | SSE 11 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | ENE 9 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | S 7 | SSE 7 | SE 7 | S 8 | ESE 6 | E 7 | ENE 7 | S 9 | S 9 |
| kJ | 254 | 164 | 116 | 90 | 57 | 39 | 18 | 488 | 275 | 203 | 189 | 151 | 100 | 132 | 109 | 19 | 90 | 106 | 42 | 56 | 93 |
Swell 2 Height (m) Direction Period (s) | — | — | S 10 | — | — | — | SE 8 | SSE 9 | SSE 10 | S 9 | S 9 | S 7 | ENE 9 | ENE 8 | S 7 | SE 12 | NE 8 | S 7 | S 9 | ENE 7 | ENE 7 |
| kJ | — | — | 52 | — | — | — | 3 | 8 | 10 | 6 | 6 | 26 | 131 | 99 | 35 | 6 | 62 | 10 | 14 | 21 | 18 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | E 14 | SE 12 | SE 13 | SE 13 | SE 12 | S 8 | SE 12 | SE 10 | SE 10 | SSE 15 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 4 | 6 | 7 | 7 | 6 | 10 | 6 | 4 | 4 | 22 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | — | — | SW 2 | SSW 3 | — | — | — | ENE 8 | E 6 | NW 2 | W 4 | W 4 | WSW 4 | — |
| kJ | 471 | 653 | 763 | 603 | 795 | 870 | 637 | — | — | 2 | 1 | — | — | — | 188 | 175 | 1 | 18 | 41 | 5 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 208 | 208 | 84 | 208 | 498 | 328 | 0 | 0 | 192 | 0 | 45 | 18 | 0 | 190 | 53 | 208 | 498 | 0 | 18 | 39 | 84 |
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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