Bikini Surf Break

Lat Long: 34.88° S 54.77° W

Bikini Surf Forecast and Surf Report

Issued: 2 am 05 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 5 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: Sunday 6 Sep, 9AM (local time) - 8ft (2.5m), 8s period, S swell with 877 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 2.5m 8s and forecast to arrive on Sunday (Sep 06) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Sep 07) 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 9AM (Sun 6th Sep)8ft (2.5m) 8s

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


The Lowdown

Alright folks, Rusty here. Let’s talk about what Bikini has in store for us over the next couple of weeks. It’s a bit of a mixed bag, so let’s get into it.

We’ve got some solid energy rolling in, but the timing with the wind is going to be everything. Most of the first week is a write-off thanks to strong, onshore wind tearing up the otherwise decent swell. You’ll want to be patient and pick your sessions carefully.

The standout window is shaping up to be Monday the 14th and into Tuesday the 15th. Monday morning the 14th, we’ve got a clean 4ft swell from the east with a nice long 11-second period, and a light cross-offshore breeze. It’s not huge, but the quality will be there. The real magic, though, looks to be Monday afternoon the 14th. We get a glassy 4ft easterly swell, and when Bikini goes glassy, it's a rare treat. That’s your best shot at some proper fun waves with nobody else on them.

Before that, there’s a glimmer of hope on Monday the 7th. The morning shows a clean 4ft southerly swell with a light cross-offshore wind. It’s not a massive standout, but it’s the first decent chance after a rough start.

After the 14th, things go quiet again. We get a couple of small, clean windows on the 18th and 19th with some glassy conditions, but the swell drops right off, so it’s small-wave gear only.

Imperial Units

The water is sitting at 56°, which is a touch warmer than normal for this time of year at Bikini. That’s a nice little bonus.

Overall, the best call is Monday the 14th. Aim for the afternoon glass-off. It won’t be big, but the conditions will be as good as it gets. The forecast confidence for that call is decent as it’s within the first week.

The early part of the run is frustrating. Strong southwesterly winds on the 5th and 6th make the 6ft to 8ft southerly swell (combined energy hitting up to 879) totally messy and onshore. Not worth it. The swell direction from the south is right for the break, but with 18 to 25 mph winds, it’s a battle.

We then see a gap of poor, small swell until the Monday the 7th. The 11th and 12th see another round of strong cross-onshore winds with a short period swell that’s blown out.

After the 15th, it’s mostly small, weak easterly swells. The 18th and 19th offer small glassy windows but with combined energy as low as 53, it’s very weak. The wind on the 20th is offshore but the swell is tiny. For the second week, expect small, inconsistent surf. You might get a knee-high wave on a glassy morning, but don’t get your hopes up.

So, in a nutshell: wait for that Monday the 14th and make the most of it.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Sat afternoon. Very mild (max 12°C on Mon night, min 7°C on Sat night). Winds decreasing (fresh winds from the SW on Sat afternoon, calm by Sun night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 17°C on Thu afternoon, min 10°C on Tue night). Wind will be generally light.

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
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
2
0
1
1
0
1
0
0
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)
1.2
SSW
5
1.7
SSW
6
2
S
7
2.5
S
8
2.1
SSE
9
1.5
SSE
9
1.2
SSE
9
1.1
SSE
9
0.9
SSE
8
0.9
SSE
10
0.8
SSE
10
0.4
S
8
0.4
S
11
0.3
SSE
16
0.4
SSE
13
0.4
S
11
0.4
S
11
0.3
S
10
0.3
S
10
0.4
S
9
1.8
SE
6
Wave Graph
Metric surfscale
Energy kJ
77
238
408
877
690
359
227
190
103
158
125
23
41
48
57
41
36
17
16
24
192
Wind (km/h)
30
SW
40
SW
30
S
30
S
25
S
10
SE
10
NE
20
ENE
15
NE
10
NE
10
SSE
5
NNE
5
WNW
5
S
10
NNE
5
N
15
ENE
15
NE
20
ESE
35
SE
50
SE
Wind State
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-off
cross-off
off
off
cross-on
glassy
cross
cross-on
off
off
cross-off
off
cross
cross
cross-on
High Tide
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
6:35AM0.26m
7:15PM0.31m
7:24AM0.29m
8:08PM0.29m
Low Tide
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
2:35PM0.06m
3:15AM0.10m
3:33PM0.03m
clear
rain showers
light rain
light rain
cloud
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
cloud
cloud
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:50
6:50
6:48
6:47
6:46
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:22
6:22
6:23
6:24
6:24
6:25
6:27
 mm
1
2
1
8
Temp °C
10
10
9
8
8
8
10
11
12
13
13
11
13
14
13
16
17
13
13
13
12
Feels °C
3
1
1
0
1
4
6
5
7
11
10
9
11
12
11
14
13
8
9
6
2
  • 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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