Bikini Surf Break

Lat Long: 34.88° S 54.77° W

Bikini Surf Forecast and Surf Report

Issued: 2 am 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Bikini sea temperature is
12.4°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 31 Aug 2026:

  • Best quality surf: Tuesday 1 Sep, 3AM (local time) - 2ft (0.6m), 8s period, E swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 3PM (local time) - 8ft (2.5m), 11s period, S swell with 1,432 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 1 Sep, 3AM (local time) - 2ft (0.6m), 8s period with E 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 Tuesday (Sep 01) at 3AM. The primary swell is predicted to be 0.6m and 8s period. 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 2.5m 11s and forecast to arrive on Sunday (Sep 06) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Aug 31) at 3PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Tue 1st Sep)2ft (0.6m) 8s
Best Surf 3AM (Tue 1st Sep)2ft (0.6m) 8s
Most Powerful 3PM (Sun 6th Sep)8ft (2.5m) 11s

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


The Lowdown

Alright, this is Rusty. Let's talk about what we've got lined up for Bikini over the next couple of weeks.

Right off the bat, it's a slow start. We're looking at a pretty grim run of tiny, weak surf from Monday the 31st of August through the first few days of September. The combined energy is barely registering (1), and we're dealing with a 0.3ft southerly swell and a 3ft easterly. The wind is a mixed bag of cross-off and cross-on, but the swell is just too small to get excited about. It's a stretch of several days where you're better off leaving the board in the car.

Things start to show a little pulse around Thursday the 3rd of September morning. The combined energy jumps to (147) with a 3ft easterly swell at 10 seconds, but the wind swings to a cross-shore from the west-northwest, and it's lumpy. Not great, not terrible, just ordinary. The wind gets worse from there, with a strong onshore flow on Friday and Saturday.

Saturday the 5th of September sees a real spike in size, but it's a messy one. We're getting a 7ft southerly swell in the morning, building to 10ft by the afternoon. The combined energy is massive (536 and then 1122), but the wind is a fresh to strong breeze going cross and cross-on. This is expert-only territory over 8ft, and the onshore wind is going to make it a washing machine. For a beach and point break like Bikini, this setup looks more interesting for kite surfing than paddle surfing unless you're a total charger. Sunday the 6th keeps the size up with an 8ft southerly swell, but again, it's hampered by a fresh cross-onshore breeze.

Now, for the true standout. If you're patient, you'll be rewarded. Monday the 7th of September is the one to circle. The morning is a bit marginal with a 6ft south-easterly swell and a slight cross-shore wind, but the afternoon is where it's at. The wind drops to a gentle breeze from the east, going cross-offshore, and the 5ft swell from the south-east (10 seconds) cleans right up. The combined energy is a solid (514), and the conditions are described as "very good." This is the best on offer for the whole period—solid, clean, and powerful. Because it's a week out, it's promising, but keep an eye on it.

After that peak, the surf tapers off quickly. Tuesday the 8th of September has a 3ft easterly swell with a 12-second period, which is a nice groundswell, but the morning is marginal. The afternoon drops right off to a tiny 1.0ft.

Wednesday the 9th of September offers a couple of decent sessions. The morning has a 4ft east-southeast swell with a *gentle offshore* wind from the north-east. That's "good surf conditions" with a clean, groomed face. The afternoon is a bit smaller at 4ft but still clean with a cross-off breeze. It's a solid, if not spectacular, day.

The rest of the run from the 10th of September onwards is a story of fading energy and onshore winds. The combined energy hangs around the 200-280 mark, but the wind is consistently cross-on or onshore, making for poor conditions. There's a glimmer on the 14th of September morning with a 4ft southerly swell and clean conditions, but it's rated as marginal. Things are pretty flat and uninspiring from the 11th to the 15th.

So, to sum it up: get through the first week of small stuff and messy wind. The real window is the afternoon of Monday the 7th of September for the best, cleanest swell. Wednesday the 9th is a decent backup. After that, don't hold your breath.

-Rusty

Short Range Forecast

Mostly dry. Very mild (max 19°C on Wed afternoon, min 11°C on Mon morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Thu morning. Very mild (max 14°C on Thu morning, min 8°C on Thu night). Wind will be generally light.

Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
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
1
0
0
0
0
0
0
0
1
0
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)
0.1
S
6
0.1
S
6
0.1
S
5
0.6
E
8
0.7
E
8
0.7
E
9
0.6
E
9
0.6
E
9
0.7
E
9
0.8
E
10
0.8
E
10
0.6
E
10
0.5
E
10
1
S
8
0.8
S
8
0.6
S
8
1.5
SW
5
1.7
SSW
6
2
S
7
2.5
S
11
2.2
SSE
11
Wave Graph
Metric surfscale
Energy kJ
1
1
1
49
65
71
55
55
87
131
131
72
49
119
78
41
126
209
353
1432
1080
Wind (km/h)
15
ENE
25
ENE
5
E
10
SE
10
SSE
5
NNW
10
NNW
15
NW
20
NNW
20
WNW
20
W
20
SSW
5
SW
15
SW
15
N
15
WNW
15
S
10
S
20
SSW
25
SSW
25
SSE
Wind State
cross-off
cross-off
cross-off
cross
cross-on
glassy
cross-off
cross-off
cross-off
cross
cross-on
on
cross-on
cross-on
off
cross
cross-on
on
on
on
cross-on
High Tide
9:32AM0.31m
10:22PM0.25m
3:38AM0.20m
11:07PM0.23m
4:37AM0.20m
11:54PM0.21m
5:35AM0.20m
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
Low Tide
5:59PM0.04m
1:25AM0.18m
6:14AM0.16m
6:48PM0.02m
6:53AM0.18m
7:38PM0.01m
7:32AM0.18m
8:30PM0.01m
3:29AM0.15m
9:25PM0.01m
4:22AM0.14m
10:24PM0.02m
5:26AM0.14m
11:26PM0.04m
part cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
cloud
light rain
rain showers
clear
clear
clear
part cloud
clear
clear
part cloud
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:00
6:58
6:56
6:56
6:54
6:52
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:19
6:20
6:20
6:21
6:22
6:22
6:22
 mm
2
1
Temp °C
15
16
13
13
13
11
16
19
15
14
12
10
10
11
11
12
11
9
9
9
10
Feels °C
11
12
12
11
11
10
13
16
12
11
9
5
6
7
7
8
7
6
4
3
3
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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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