Bikini Surf Break

Lat Long: 34.88° S 54.77° W

Bikini Surf Forecast and Surf Report

Issued: 2 pm 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Bikini sea temperature is
12.8°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 14 Sep 2026:

  • Best quality surf: Monday 14 Sep, 12AM (local time) - 3ft (0.9m), 10s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Wednesday 16 Sep, 6PM (local time) - 4.5ft (1.4m), 9s period, SSE swell with 336 kJ wave energy.
  • Next surfable swell (1★+): Monday 14 Sep, 12AM (local time) - 3ft (0.9m), 10s period with SSE 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 Monday (Sep 14) at 12AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.9m 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 1.4m 9s and forecast to arrive on Wednesday (Sep 16) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 8s period and expected on Sunday (Sep 20) at 9AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Mon 14th Sep)3ft (0.9m) 10s
Best Surf12AM (Mon 14th Sep)3ft (0.9m) 10s
Most Powerful 6PM (Wed 16th Sep)4.5ft (1.4m) 9s

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


The Lowdown

Alright, let’s talk Bikini surf. And I’m not gonna sugarcoat it—this 16-day stretch is mostly a flat, choppy mess. But there are a couple of tiny windows where you might actually want to get wet.

We start off Sunday afternoon the 13th with a 1.6m south-southeast swell, but it’s short-period (8 seconds), and the wind’s cross-onshore. It’s lumpy and ugly. Water temp is 13°—a touch warmer than usual for this time of year—and the energy is moderate (396), but the quality is poor. I’d skip it.

Monday morning the 14th is your first real chance. Swell drops to 0.7m from the south, but the period stretches to 10 seconds and the wind is glassy. That’s clean, even if it’s small. The energy is moderate (167), and it’s surfable. Monday afternoon gets a light cross-shore and it fades out. Morning’s the call.

Tuesday the 15th is junk. Morning has small east swell but a strong cross-wind making it lumpy. Afternoon brings a 1.3m southwest swell with a pathetic 5-second period and onshore wind. Just gross.

Wednesday morning the 16th is still cross-onshore and choppy with 1.4m from the south. But here’s the gold: Wednesday afternoon. The wind swings cross-offshore, the swell settles to 1.3m from the SSE at 9 seconds, and the energy is solid at 313. It’s clean, it’s got some push—this is easily the best surf of the whole period. If you only surf once, make it Wednesday afternoon.

Thursday the 17th has clean offshore conditions in the morning with 0.9m from the SSE at 9 seconds—surfable but nothing special. Friday the 18th is down to 0.4m. From the 19th through the 20th, it’s basically flat—0.2m slop. Don’t even look at it.

There’s a real dead zone from the 19th to the 21st. The 21st shows 0.7m east swell but onshore and weak. The 22nd bumps up to 1.5m from the south but it’s only 6 seconds and onshore—a lumpy mess.

The 23rd is clean with 1.2m from the SSE at 7 seconds and offshore wind in the morning. It’s surfable but still short-period and meh. The 24th has some long-period energy (14 seconds) but the size is tiny—0.4m. You’ll be waiting forever for nothing.

The 25th onwards is mostly small east swells, clean at times but weak. The 26th has 0.8m at 8 seconds and clean in the morning—small but rideable. The 27th and 28th are back to cross-onshore winds and chop. Poor.

So, bottom line: Wednesday afternoon the 16th is the standout—clean, moderate size, decent energy. Monday morning the 14th is your only other real option, and that’s just for a small, glassy dribble.

Otherwise, it’s a long, quiet stretch. Water’s a touch warm, but that doesn’t help when there’s no waves. Pick your window carefully, don’t force it, and maybe bring a book for the rest of the time.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 13°C on Tue morning, min 7°C on Wed morning). Winds increasing (calm on Mon morning, fresh winds from the SSW by Tue afternoon).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 17°C on Thu afternoon, min 7°C on Wed night). Wind will be generally light.

Sun
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
2
1
0
1
0
0
0
0
2
2
1
1
1
1
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SSE
8
0.9
SSE
10
0.7
S
10
0.7
S
10
0.6
S
9
0.5
E
8
1.3
SW
5
1.6
S
7
1.4
S
9
1.3
SSE
9
1.2
SSE
9
0.9
SSE
9
0.8
SSE
8
0.5
S
8
0.4
SSE
9
0.2
S
13
0.3
S
12
0.2
S
11
0.2
S
10
0.2
S
10
Wave Graph
Metric surfscale
Energy kJ
285
160
98
94
63
29
103
279
334
308
227
124
82
37
26
13
25
9
8
8
Wind (km/h)
20
S
5
E
5
WNW
5
SE
10
NNW
30
W
35
SSW
25
S
10
SSE
15
E
20
NNE
20
N
15
NNE
10
NNE
10
NE
20
E
15
NE
15
NNE
20
ENE
15
NE
Wind State
cross-on
cross-off
glassy
cross
cross-off
cross
on
on
cross-on
cross-off
off
off
off
off
cross-off
cross-off
cross-off
off
cross-off
off
High Tide
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
5:52AM0.19m
12:31PM0.30m
1:52AM0.18m
6:39AM0.19m
1:15PM0.28m
Low Tide
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
3:11AM0.17m
9:07PM0.06m
3:29AM0.17m
9:55PM0.08m
cloud
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:39
6:39
6:37
6:35
6:33
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:28
6:29
6:30
6:30
6:30
6:31
6:31
 mm
Temp °C
8
8
11
10
10
13
10
8
9
10
9
14
17
15
15
16
13
17
18
15
Feels °C
3
4
9
8
8
6
3
1
6
6
3
10
14
12
12
12
10
15
16
14
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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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