Bikini Surf Break

Lat Long: 34.88° S 54.77° W

Bikini Surf Forecast and Surf Report

Issued: 2 pm 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Bikini sea temperature is
12.6°C
1.2° 

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


Bikini surf forecast from 11 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 9PM (local time) - 3.5ft (1.0m), 8s period, S swell with cross-offshore winds.
  • Most powerful swell: Sunday 13 Sep, 6AM (local time) - 7ft (2.2m), 7s period, SSE swell with 526 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 9PM (local time) - 3.5ft (1.0m), 8s period with S swell.

Best Forecast Surf Conditions for Bikini this week:

The surf forecast for Bikini over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Sep 13) at 9PM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 1.0m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Bikini in the next 16 days are 2.2m 7s and forecast to arrive on Sunday (Sep 13) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Thursday (Sep 17) at 6PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Sun 13th Sep)3.5ft (1.0m) 8s
Best Surf 9PM (Sun 13th Sep)3.5ft (1.0m) 8s
Most Powerful 6AM (Sun 13th Sep)7ft (2.2m) 7s

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


The Lowdown

Alright, Rusty here. Let's cut through the noise and look at what Bikini's got cookin' for us.

Right off the bat, the next few days are a write-off. We’ve got a solid run of poor surf and messy onshore or cross-shore winds that just won't let up until at least the middle of the week. You're looking at a real slow start here.

Now, Monday the 14th shows a little flicker of hope – the wind finally swings around offshore out of the NE, dropping to a gentle breeze. Swell is tiny though, around 2 feet from the south, and the energy is pretty weak (combined energy of 171). It's clean, but you'll be scratching for anything rideable. Don't get your hopes up.

Thursday the 17th is where things start to look a bit more interesting. We get a proper offshore breeze from the NNE, moderate but clean, and the swell bumps up to a consistent 3 feet from the SSE with a solid 10-second period. The combined energy jumps to 205, which is a decent pulse. This is a classic Bikini setup: the south swell with that period will wrap nicely into the points, and with offshore wind, that place can handle it. It's an advanced break, very consistent, and the crowds are often a factor – so expect company, but it’ll be worth it for those clean lines.

Friday the 18th morning is pure magic for a moment. The wind goes glassy – absolutely dead calm – but the swell drops right back down to 2 feet with combined energy of just 98. It's a real tease; the conditions will be perfect, but there's barely any water moving. A good session for a log or a longboard, nothing more.

After that, the outlook gets pretty grim again. We’ve got a long stretch of poor surf with cross and onshore winds and tiny swell through the mid to late 20s. There’s a pulse building toward the 25th, with the swell jumping to 7 feet from the south on Friday the 25th morning, but the wind is cross-onshore, making it a messy, lumpy affair. The energy is massive, though (combined energy of 999), so if you’re an expert and don’t mind the chop, it’ll be powerful. That afternoon cleans up a bit to cross-shore with an 11-second period, which could be the best of that week, but the onshore earlier will have stirred it up.

The standout window is definitely that Thursday the 17th. It's not huge, but it's the perfect combo of clean offshore wind and a decent south groundswell that Bikini just loves. That’s your session.

The water temperature is sitting at 55°F, which is a touch warmer than normal for this time of year – not a huge difference, but noticeable if you're used to the bite.

Stay tuned, forecasts can flip, but for now, it’s a waiting game.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 13°C on Fri afternoon, min 8°C on Sat night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Tue afternoon, min 8°C on Wed night). Wind will be generally light.

Fri
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
2
1
1
0
0
0
0
0
0
2
2
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
S
9
0.3
S
9
1.1
SSE
5
2.1
S
8
1.5
S
8
2.1
SSE
7
1.6
SE
8
0.9
S
10
0.7
S
10
0.6
S
10
0.6
S
9
0.6
E
7
0.5
E
7
0.3
E
7
0.9
S
5
0.9
SSE
6
1
S
9
1
SSE
10
0.9
SSE
10
0.8
SSE
9
Wave Graph
Metric surfscale
Energy kJ
15
14
54
487
302
444
305
154
98
71
64
39
25
8
42
56
176
205
135
94
Wind (km/h)
15
SE
15
S
30
SSE
30
S
15
S
25
SSE
20
SSE
15
E
15
NE
10
ENE
10
WNW
20
WNW
25
WSW
15
S
15
SE
15
ESE
20
NE
25
NNE
20
NE
15
NE
Wind State
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-off
off
cross-off
cross
cross
cross-on
cross-on
cross-on
cross
off
off
off
off
High Tide
8:08PM0.29m
8:10AM0.32m
8:58PM0.28m
8:56AM0.34m
9:45PM0.26m
9:41AM0.34m
10:31PM0.24m
3:17AM0.19m
11:16PM0.22m
4:11AM0.19m
00:02AM0.20m
5:02AM0.19m
00:52AM0.19m
Low Tide
3:33PM0.03m
4:02AM0.11m
4:26PM0.01m
00:27AM0.20m
4:47AM0.12m
5:16PM0.01m
00:56AM0.19m
5:29AM0.14m
6:04PM0.01m
6:10AM0.15m
6:51PM0.02m
6:50AM0.16m
7:37PM0.03m
7:27AM0.17m
8:22PM0.05m
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:41
6:39
6:39
6:37
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:27
6:27
6:28
6:29
6:30
6:30
6:30
 mm
Temp °C
13
12
11
10
9
9
9
11
12
13
12
14
15
15
10
11
10
15
17
12
Feels °C
10
9
5
3
3
3
4
7
9
10
10
8
9
12
6
7
5
10
13
8
  • Map Icons:
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  • 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 Bikini Surf forecast

The above surf forecast table for Bikini provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Bikini can be found by selecting the local surf guide option on the grey menu. Our Bikini 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 (Bikini) 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 Bikini 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.

Bikini is 17 km (11 miles) from the city of San Carlos. If you plan a holiday in Uruguay - South, look for hotels and other accommodation in San Carlos. San Carlos has rooms for a wide range of budgets as well as car hire and transport links.

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