Bikini Surf Break

Lat Long: 34.88° S 54.77° W

Bikini Surf Forecast and Surf Report

Issued: 2 am 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Bikini sea temperature is
12.7°C
1.4° 

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


Bikini surf forecast from 3 Sep 2026:

  • Best quality surf: Monday 7 Sep, 12PM (local time) - 4ft (1.2m), 9s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 6AM (local time) - 6.5ft (2.0m), 7s period, S swell with 416 kJ wave energy.
  • Next surfable swell (1★+): Friday 4 Sep, 9PM (local time) - 3ft (0.9m), 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 Friday (Sep 04) at 9PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.3m and 10s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Bikini in the next 16 days are 2.0m 7s and forecast to arrive on Sunday (Sep 06) 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 1.0m 5s period and expected on Tuesday (Sep 08) at 6PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Fri 4th Sep)3ft (0.9m) 8s
Best Surf12PM (Mon 7th Sep)4ft (1.2m) 9s
Most Powerful 6AM (Sun 6th Sep)6.5ft (2.0m) 7s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what’s coming up for us.

Right off the bat, I gotta be straight with you – the next week and a half is a bit of a write-off. The surf is either tiny, blown out, or just plain messy. We’re looking at a gap of about 11 days where there’s nothing really worth paddling out for. The winds are mostly cross-onshore, the swell is mushy, and the energy just isn’t there. It’s one of those frustrating stretches where you’re better off doing something else.

Now, the first real glimmer of hope shows up on Monday, September 15th morning. The wind finally swings offshore from the NNE at a light 6 mph, and the water is clean. We’ve got a small 3 ft swell from the E with a period of 9 seconds. The combined energy is moderate at 179, so it’s not going to be pumping, but it’s clean and surfable. This is a window for the patient surfer, not a stand-out, but a chance to get wet.

Things get a little more interesting on Thursday, September 18th afternoon. The wind drops to zero, leaving it glassy – absolute magic for the surface. The swell is still small at 2 ft from the E with a 9-second period, and the combined energy is just 116. It’s tiny, but when it’s glassy like that, even a knee-high wave can feel like a million bucks. This is a quiet, meditative session for the longboard. Not a stand-out for power, but a stand-out for serenity.

The real standout, the one that’s got me thinking about the long drive, is Friday, September 19th afternoon. We’ve got a 4 ft swell from the S with a long period of 12 seconds. That’s proper groundswell. The combined energy jumps to 548, which is moderate to strong, so there’s some real grunt behind it. The catch? The wind is onshore from the S at 9 mph, so it’s going to be a bit lumpy. But this is a south swell, and at Bikini (Bikini) – a beach and point break – that longer period is going to wrap around the points and give us some clean lines that the open beach won’t see. For a point break, that long period is a blessing. It’ll be for advanced surfers only, but the potential is there for a proper session. This is the one to circle on the calendar.

The water temp at the start of the forecast is 55°F, which is about 3°F warmer than normal for this time of year. A touch warmer than usual, which is nice.

So, to sum it up: the first 11 days are a dud. The 15th and 18th offer small, clean windows for a fun paddle. The 19th is the real target – a solid south groundswell with real energy, but you’ll need to find a sheltered point to get the best of it.

Stay patient, and keep an eye on the sky.

Rusty.

Short Range Forecast

Light rain (total 6mm), mostly falling on Thu morning. Very mild (max 13°C on Thu afternoon, min 8°C on Sat night). Winds increasing (calm on Fri night, fresh winds from the SW by Sat afternoon).

Days 4-6 Weather Summary

Some drizzle, heaviest during Sun morning. Very mild (max 15°C on Tue afternoon, min 9°C on Sun night). Winds decreasing (fresh winds from the SSE on Sun morning, calm by Tue night).

Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
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
0
0
0
0
1
0
0
0
0
0
1
1
1
1
1
0
0
1
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)
0.9
E
11
0.8
E
11
0.6
E
11
1.1
S
7
1.1
S
8
0.8
S
8
1.1
SSW
5
1.8
SW
6
1.9
S
7
1.9
SSE
7
1.7
SSE
8
1.5
SSE
8
1.3
SSE
9
1.3
SE
9
0.9
SSE
9
0.7
SSE
10
0.6
S
9
0.4
SSE
8
0.7
E
6
0.7
E
8
0.7
E
7
Wave Graph
Metric surfscale
Energy kJ
185
146
83
113
142
72
50
216
331
375
355
322
270
255
135
115
63
23
33
55
54
Wind (km/h)
20
W
20
W
15
SSW
20
SW
20
SW
10
NNW
20
SW
35
SW
20
SSW
30
SSE
25
SSE
10
SE
10
ESE
20
E
15
NE
20
NE
20
NE
5
N
5
NE
10
ENE
10
NE
Wind State
cross-on
cross-on
on
cross-on
cross-on
cross-off
cross-on
cross-on
on
cross-on
cross-on
cross
cross
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
11:47AM0.37m
00:45AM0.20m
6:34AM0.19m
12:40PM0.37m
1:39AM0.18m
7:32AM0.18m
1:39PM0.37m
2:40AM0.18m
8:26AM0.17m
2:46PM0.36m
3:45AM0.19m
3:58PM0.34m
4:47AM0.20m
5:10PM0.33m
5:43AM0.23m
6:16PM0.32m
Low Tide
8:30PM0.01m
3:29AM0.15m
9:25PM0.01m
4:22AM0.14m
10:24PM0.02m
5:26AM0.14m
11:26PM0.04m
6:48AM0.14m
00:29AM0.05m
8:32AM0.15m
12:15PM0.13m
1:29AM0.07m
1:29PM0.09m
2:25AM0.08m
light rain
part cloud
clear
clear
clear
part cloud
clear
clear
rain showers
rain showers
clear
clear
clear
clear
clear
part cloud
part cloud
clear
cloud
cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:54
6:52
6:50
6:50
6:48
6:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:21
6:22
6:22
6:22
6:23
6:24
6:24
 mm
3
3
1
13
Temp °C
12
13
12
11
11
10
10
9
9
10
10
9
11
12
11
14
15
14
15
17
14
Feels °C
8
8
9
6
6
8
5
1
3
3
4
5
7
7
6
9
11
12
13
16
11
  • 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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