Bikini Surf Break

Lat Long: 34.88° S 54.77° W

Bikini Surf Forecast and Surf Report

Issued: 8 pm 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's Bikini sea temperature is
13.1°C
1.8° 

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


Bikini surf forecast from 7 Sep 2026:

  • Best quality surf: Monday 7 Sep, 3AM (local time) - 4.5ft (1.4m), 9s period, SSE swell with glassy winds.
  • Most powerful swell: Saturday 12 Sep, 6PM (local time) - 10ft (3.0m), 9s period, SE swell with 1,242 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 3AM (local time) - 4.5ft (1.4m), 9s 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 07) at 3AM. The primary swell is predicted to be 1.4m and 9s period with a secondary swell of 0.1m and 8s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Bikini in the next 16 days are 3.0m 9s and forecast to arrive on Saturday (Sep 12) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Friday (Sep 11) at 9PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Mon 7th Sep)4.5ft (1.4m) 9s
Best Surf 3AM (Mon 7th Sep)4.5ft (1.4m) 9s
Most Powerful 6PM (Sat 12th Sep)10ft (3.0m) 9s

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


The Lowdown

Right then, let’s have a look at what’s on the cards for Bikini. I’m Rusty, and I’ve been staring at the charts for this stretch. It’s a bit of a mixed bag, but there’s a solid stand-out if you’ve got some patience.

The first bit of week one is pretty average. We kick off Monday the 7th with a bit of 4ft swell from the SSE, period around 9 seconds, and the wave energy is moderate (228). Morning has some clouds and a light cross-off shore – that’s clean enough, and the report says “expect good surf conditions,” so it’s a reasonable start. But it fades fast. Tuesday the 8th drops to under 3ft, and Wednesday the 9th is barely a ripple with a tiny 1.0ft swell. There’s a long, dry gap there where it’s just not worth paddling out. Thursday the 10th has a glassy morning with a 1ft swell but it’s pretty weak.

Then things look a bit rowdy but messy. Saturday the 12th sees a jump in size – a solid 8ft to 10ft from the SE with a short period of 8 seconds. The wave energy is huge (796 then 1188), but the wind is a fresh cross-onshore and it’s lumpy. That’s expert territory size-wise, but with the onshore wind, it’s a messy washout. That’s more of a kite-surfing setup with that much wind and lumpy sea. Sunday the 13th is a bit smaller at 6ft but still with cross-onshore wind – marginal at best.

Now, for the standout. You will want to keep an eye on Thursday the 17th of September. The morning shows a clean 6ft swell from the S with a long period of 12 seconds and very strong wave energy (953). The wind is a light cross-off shore. That is the combination for some proper, clean lines. The report says “expect very good surf conditions.” The afternoon gets even better – same size, period stretches to 13 seconds, and the energy is even bigger (1189). The wind stays cross-off, and it’s called “excellent surf conditions for experienced surfers.” That’s the pick of the whole run, for sure. That 6ft is big, so beginners will want to sit this one out, but for anyone with some experience, that’s going to be pumping. The long period from the S means it’ll have good shape and power, and with the cross-off wind, the faces will be clean. Bikini is a beach and point setup, so a long period S swell likes that kind of exposure. Expect crowds here, as it’s a known spot.

The rest of that week tapers off. Friday the 18th still has a clean 5ft with offshore winds – very surfable – but by the weekend of the 19th, it’s back to small and weak, with onshore wind blowing it out. The second week fades into tiny, poor conditions with nothing to recommend.

So, if you can wait, Thursday the 17th is your day. The morning is great, the afternoon is even better. Don’t waste your energy on the small, windy days before that.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 14°C on Wed morning, min 6°C on Mon morning). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 30mm), heaviest during Fri night. Very mild (max 15°C on Thu afternoon, min 10°C on Fri night). Winds increasing (calm on Thu morning, strong winds from the SSE by Fri night).

Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
0
1
1
1
1
0
1
1
1
0
0
0
0
0
0
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)
1.4
SSE
9
1.2
SSE
9
1.1
SSE
9
1
SSE
9
0.9
SSE
9
0.7
S
9
0.3
SSE
12
0.3
SSE
11
0.3
SSE
16
0.5
S
14
0.4
SSE
12
0.4
S
11
0.4
S
10
0.4
S
10
0.4
S
9
2.1
ESE
7
2.5
SE
8
3
SE
9
2.5
SE
9
Wave Graph
Metric surfscale
Energy kJ
300
227
190
144
133
79
29
25
49
93
47
37
31
29
25
363
796
1188
1062
Wind (km/h)
5
S
5
NNW
5
ESE
15
NE
10
NNW
10
ENE
15
NNE
5
N
15
E
10
NNE
0
NE
15
E
20
NE
25
E
30
ESE
35
SE
35
SSE
35
SSE
20
SSE
Wind State
glassy
cross-off
cross
off
cross-off
cross-off
off
cross-off
cross-off
off
glassy
cross-off
cross-off
cross-off
cross
cross
cross-on
cross-on
cross-on
High Tide
3:45AM0.19m
3:58PM0.34m
4:47AM0.20m
5:10PM0.33m
5:43AM0.23m
6:16PM0.32m
6:35AM0.26m
7:15PM0.31m
7:24AM0.29m
8:08PM0.29m
8:10AM0.32m
8:58PM0.28m
Low Tide
11:26PM0.04m
6:48AM0.14m
00:29AM0.05m
8:32AM0.15m
12:15PM0.13m
1:29AM0.07m
1:29PM0.09m
2:25AM0.08m
2:35PM0.06m
3:15AM0.10m
3:33PM0.03m
4:02AM0.11m
4:26PM0.01m
00:27AM0.20m
part cloud
part cloud
clear
cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
part cloud
cloud
mod rain
heavy rain
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:50
6:48
6:47
6:46
6:43
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:23
6:24
6:24
6:25
6:27
6:27
 mm
7
23
Temp °C
8
8
10
10
13
13
11
14
14
12
14
15
12
13
13
11
11
10
10
Feels °C
4
5
7
5
10
9
7
12
11
9
11
11
8
7
7
2
4
1
6
  • 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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