Bikini Surf Break

Lat Long: 34.88° S 54.77° W

Bikini Surf Forecast and Surf Report

Issued: 2 pm 01 Sep 2026 (local time)

Forecast update in  hr  min

Today's Bikini sea temperature is
12.7°C
1.5° 

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


Bikini surf forecast from 1 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 3AM (local time) - 4ft (1.2m), 10s period, SE swell with glassy winds.
  • Most powerful swell: Sunday 6 Sep, 6PM (local time) - 8ft (2.5m), 9s period, S swell with 1,017 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 2 Sep, 12AM (local time) - 2.5ft (0.7m), 9s 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 Wednesday (Sep 02) at 12AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.1m and 6s. 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 9s and forecast to arrive on Sunday (Sep 06) 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 1.2m 5s period and expected on Tuesday (Sep 08) at 9PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+)12AM (Wed 2nd Sep)2.5ft (0.7m) 9s
Best Surf 3AM (Tue 8th Sep)4ft (1.2m) 10s
Most Powerful 6PM (Sun 6th Sep)8ft (2.5m) 9s

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


The Lowdown

Alright, Rusty here. Let's talk about what's coming up for Bikini. This is a spot that's exposed to the south, so it needs the right angle to light up, and the next couple of weeks look like a real mixed bag with plenty of onshore wind and tricky conditions.

The water is sitting at 55° which is a touch warmer than usual for this time of year, but that's about the only thing that's been kind to us.

The first real chance to get wet looks like it will be on the morning of September 8th. The surf is a small 4ft from the southeast, and the wind is light and cross-offshore from the east. This is a clean window, but the energy is moderate (200). It's a gentle start, but it's the best we've seen in a while.

The standout of the whole period, though, is shaping up to be the morning of Sunday, September 13th. We've got a solid 4ft swell from the south, but the kicker is the period – a very long 13 seconds. That's a proper groundswell, packing a punch with strong energy (584). The wind is light and cross-offshore from the northwest, which should keep it clean. The only thing is, with that long period and a south swell, it might be a little too straight for a beach break, but at a pointbreak setup, it could be a ripper. This one is for the experienced crew though, as the energy is strong.

The morning of September 8th is the only real highlight for a clean, small wave. The week before that, from September 1st through the 7th, is a write-off. The wind is predominantly cross-on or onshore, with a few days of strong breezes and even a near-gale on the afternoon of the 6th. The swell is there, but it's blown out and choppy. The afternoon of the 5th sees a 6ft swell from the southwest, but it's messy with a short period of 6 seconds and a fresh cross-onshore wind. By the 6th, the swell jumps to 8ft but with a near-gale cross-onshore, it's a total mess.

After the 13th, things drop off again. The wind turns back onshore from the southwest through the 15th and 16th, with a fresh breeze and lumpy conditions. The swell is still around, but the quality is gone. The 16th is a washout with onshore wind and a weak, small swell.

So, to sum it up: the window is tight. The 8th of September is your best bet for a clean, small wave on a longboard or a fish. But if you're looking for some power and you're an expert, the morning of the 13th is the one to circle on the calendar. The rest of the time, the wind is going to be a battle.

Rusty

Short Range Forecast

Light rain (total 4mm), mostly falling on Wed night. Warm (max 20°C on Wed afternoon, min 10°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the NW by Wed night).

Days 5-7 Weather Summary

Moderate rain (total 13mm), heaviest on Sun afternoon. Very mild (max 12°C on Fri afternoon, min 6°C on Sun morning). Winds increasing (calm on Fri night, strong winds from the SSE by Sun afternoon).

Tue
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
1
0
0
0
0
0
0
0
1
0
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)
0.7
E
8
0.7
E
9
0.6
E
9
0.7
E
9
0.8
E
10
0.8
E
11
0.7
E
11
0.6
E
10
0.5
E
10
1.1
S
7
0.8
S
7
0.9
SW
7
1.8
SW
6
2.3
S
8
2
S
8
2.5
S
8
2.3
SSE
9
1.8
SSE
9
1.6
SE
9
1.1
SE
10
Wave Graph
Metric surfscale
Energy kJ
66
71
56
76
127
141
108
80
53
107
68
67
228
703
533
897
791
523
388
240
Wind (km/h)
10
SSE
0
NE
10
N
15
NNW
25
NW
15
W
25
W
5
S
10
SSW
15
SSW
5
NNW
30
WSW
35
SW
25
SSW
25
WSW
50
SSE
30
S
20
S
15
S
10
ESE
Wind State
cross-on
glassy
off
cross-off
cross-off
cross
cross-on
on
on
on
glassy
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
on
cross
High Tide
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
3:45AM0.19m
3:58PM0.34m
Low Tide
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
6:48AM0.14m
00:29AM0.05m
part cloud
clear
clear
part cloud
light rain
light rain
part cloud
clear
clear
clear
clear
part cloud
rain showers
rain showers
light rain
rain showers
cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:56
6:56
6:54
6:52
6:50
6:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:20
6:20
6:21
6:22
6:22
6:22
6:23
 mm
2
2
1
1
3
8
Temp °C
14
12
16
20
17
12
14
13
12
12
10
10
10
8
7
8
9
9
9
7
Feels °C
12
11
13
17
13
9
9
9
8
8
8
3
2
1
-1
-3
0
3
4
3
  • 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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