Atlantida Surf Break

Lat Long: 29.81° S 50.05° W

Atlantida Surf Forecast and Surf Report

Issued: 8 am 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Atlantida sea temperature is
15.6°C
1.4° 

Atlantida surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Atlantida surf forecast from 11 Sep 2026:

  • Best quality surf: Thursday 17 Sep, 12AM (local time) - 5ft (1.6m), 11s period, SSE swell with glassy winds.
  • Most powerful swell: Thursday 17 Sep, 12PM (local time) - 5.5ft (1.7m), 14s period, SSE swell with 1,075 kJ wave energy.
  • Next surfable swell (1★+): Friday 11 Sep, 6PM (local time) - 2.5ft (0.8m), 8s period with E 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 Friday (Sep 11) at 6PM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.4m and 11s. 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 1.7m 14s and forecast to arrive on Thursday (Sep 17) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 7s period and expected on Tuesday (Sep 15) at 6AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Fri 11th Sep)2.5ft (0.8m) 8s
Best Surf12AM (Thu 17th Sep)5ft (1.6m) 11s
Most Powerful12PM (Thu 17th Sep)5.5ft (1.7m) 14s

Table - best surf conditions forecast for Atlantida over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s talk about what’s cooking for our stretch of coast. It’s a bit of a mixed bag over the next couple of weeks, with some definite windows to get wet, but you’ll need to pick your moments.

Right off the bat, we’ve got a bit of a slow start. The first real chance to paddle out is Friday morning, September 11th, but honestly, it’s pretty lackluster. We’re looking at a weak 3-foot easterly windswell with a short period of 8 seconds, and combined wave energy is only 142 – that’s weak. The water is sitting at 60°, which is a bit colder than normal for this time of year, so you’ll want a decent suit. The wind is light and cross, making for a bumpy surface. It’s surfable if you’re desperate, but it’s not going to get the heart pumping.

The weekend shows a bit of a spike in size, but the conditions get messy. Saturday the 12th sees a jump to 6 feet on the morning from the south, but with a short 7-second period, it’s going to be fat and gutless. The cross-off wind will keep the surface clean-ish, but with a combined energy of 563 (moderate), it’s still only marginal. By the afternoon, the wind swings south at 12 mph and goes cross-shore, chopping it up. Not worth it.

Now, here’s where we get one of the only real standouts. Sunday morning, September 13th, at Atlantida. The swell drops a touch to 4 feet from the southeast, period still a short 7 seconds, but the key is the wind. It’s going glassy. Dead flat. Combined energy is 225 (moderate), and the conditions are described as “expect good surf conditions.” That glassy wind is a massive positive, meaning clean, smooth faces. It’s not going to be a day of power, but for a fun, user-friendly session with no wind hassle, this is your best bet this week. Keep in mind it’s an exposed beach and pier setup, and crowds are likely here, so expect company.

The rest of that week is a write-off with poor conditions and onshore wind until we get to Tuesday morning, September 15th. Again, clean conditions with a cross-off breeze from the west-southwest. Swell is a modest 4 feet from the east-northeast with an 8-second period, combined energy at 300 (moderate). It’s another clean but average day. Nothing special.

The following week, starting Monday September 21st, the surf really drops off. We’re looking at a few days of tiny, weak waves with poor conditions. There’s a gap of pretty ordinary surf until Sunday morning, September 20th, where we get a brief moment of glassy conditions again with a tiny 4-foot easterly swell. Combined energy is only 196 (weak). It’s surfable but very ordinary.

The tail end of the period, around Tuesday September 22nd and Wednesday September 23rd, shows a slight increase in size to 5 feet, but the winds are mostly cross or cross-on, keeping it choppy and unappealing. The very last chance is Friday morning, September 25th, with a glassy 2-foot swell from the southeast – really small, weak stuff. That’s the kind of day you take the log out and just enjoy being in the water.

Overall, don’t expect any hero waves. The standout is definitely Sunday morning the 13th for the clean conditions. After that, it’s a lot of waiting for a clean window. Keep an eye on the forecasts, things can change.

Stay wet, Rusty.

Short Range Forecast

Heavy rain (total 42mm), heaviest during Fri morning. Very mild (max 18°C on Fri afternoon, min 14°C on Sat night). Winds increasing (calm on Sun morning, fresh winds from the ENE by Sun night).

Days 4-6 Weather Summary

Moderate rain (total 15mm), heaviest on Mon morning. Very mild (max 18°C on Tue afternoon, min 11°C on Wed night). Wind will be generally light.

Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
1
2
0
2
2
0
0
0
0
0
2
1
2
1
2
3
1
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
E
8
0.8
E
8
1.3
S
6
1.7
S
7
1.4
SSE
7
1.3
SSE
8
1.3
SE
7
1.1
SE
7
1.7
E
7
1.4
E
7
1.6
E
7
1.7
ENE
7
1.2
ENE
8
1.2
ENE
8
0.9
ENE
9
1.5
S
8
2
SSE
10
1.6
SSE
11
1.5
SSE
11
1.6
SSE
12
1.2
SSE
11
Wave Graph
Metric surfscale
Energy kJ
93
72
108
303
208
199
171
134
286
181
257
273
169
190
134
253
803
541
563
774
325
Wind (km/h)
10
NNE
10
N
15
SW
15
SW
20
S
10
WSW
5
S
20
E
25
ENE
20
NE
25
ENE
20
NNE
5
WSW
20
SW
10
W
15
SW
20
SW
5
ENE
20
NE
30
ENE
20
NNE
Wind State
cross
cross-off
cross-off
cross-off
cross
cross-off
glassy
cross-on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross
cross-on
cross
High Tide
12:43PM0.37m
00:18AM0.54m
1:00PM0.41m
6:14PM0.31m
1:26PM0.44m
7:14PM0.23m
7:13AM0.25m
1:54PM0.47m
8:17PM0.18m
8:26AM0.29m
2:23PM0.48m
9:19PM0.15m
3:01AM0.51m
2:51PM0.47m
10:15PM0.15m
3:40AM0.45m
3:17PM0.45m
10:51PM0.17m
Low Tide
2:45PM0.33m
8:30PM0.24m
8:51AM0.01m
4:07PM0.26m
9:00PM0.21m
9:28AM0.08m
5:08PM0.19m
9:29PM0.18m
5:52AM0.24m
5:58PM0.13m
9:59PM0.16m
6:17AM0.24m
6:40PM0.09m
6:43AM0.25m
7:18PM0.08m
7:07AM0.26m
12:17PM0.35m
7:51PM0.09m
heavy rain
light rain
rain showers
part cloud
part cloud
part cloud
rain showers
rain showers
heavy rain
mod rain
light rain
rain showers
part cloud
clear
clear
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:20
6:20
6:18
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:09
6:10
6:10
6:12
6:12
6:13
 mm
12
3
2
1
4
20
7
4
4
Temp °C
17
18
16
17
16
15
16
16
14
14
14
14
16
18
15
13
13
11
15
15
15
Feels °C
17
19
14
14
13
14
13
13
10
11
9
11
14
15
14
9
9
8
10
9
11
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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