Bikini Surf Break

Lat Long: 34.88° S 54.77° W

Bikini Surf Forecast and Surf Report

Issued: 2 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Bikini sea temperature is
10.7° C
0.5° 

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


Bikini surf forecast from 20 Aug 2026:

  • Best quality surf: Monday 24 Aug, 9PM (local time) - 5ft (1.6m), 12s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Sunday 23 Aug, 12PM (local time) - 10ft (3.0m), 15s period, S swell with 3,582 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 9PM (local time) - 5ft (1.6m), 12s 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 (Aug 24) at 9PM. The primary swell is predicted to be 1.6m and 12s 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 3.0m 15s and forecast to arrive on Sunday (Aug 23) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Aug 27) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 24th Aug)5ft (1.6m) 12s
Best Surf 9PM (Mon 24th Aug)5ft (1.6m) 12s
Most Powerful12PM (Sun 23rd Aug)10ft (3.0m) 15s

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


The Lowdown

Alright, let’s talk about Bikini. The next couple of weeks have some swell, but the wind is gonna be a real bugger for a lot of it. The first few days are a total washout. From the 20th to the 23rd of August, it’s onshore wind and messy, choppy surf. The wave energy is building from a measly 22 up to a massive 3074 on the 23rd, but with that wind, it’s all just a churned-up mess. Don’t even think about it.

Things start to look a little better on Monday the 24th of August. The swell drops a bit, but the wind gets lighter. The morning has a 6-foot SSE swell with a 13-second period, and the combined energy is still a solid 1009, but it’s a cross-on wind, so it’s only marginal. The afternoon is similar but smaller. It’s a start, but it’s not the one.

The real standout window opens up on Tuesday the 25th of August. The morning is looking real nice – a 4-foot SSE swell, with an 11-second period, and the wind is blowing clean offshore from the NNE at 10 km/h. That’s the ticket. The water temp is about 51°, which is a bit cooler than usual for this time of year, but nothing too crazy. The combined energy is 523, so there’s a decent push. It’s a consistent spot, so you’ll find waves. The afternoon is a bit smaller at 4 feet and the wind goes cross-offshore, but it’s still clean. This is your best bet for the first week.

Wednesday the 26th of August keeps the good run. Morning has a 4-foot SE swell with a long 13-second period, and a moderate offshore wind from the NNE at 20 km/h. The combined energy is 509, and the notes say ‘expect very good surf conditions’. That’s a direct quote. The afternoon is a little smaller but still with a gentle offshore wind. This is top-notch.

Then Thursday the 27th of August has a tiny 3-foot SE swell, but it’s glassy in the morning. If you’ve got a log, it might be worth a paddle, but it’s not going to get the heart rate up. The combined energy is only 247. After that, it’s a real dry spell. From the 28th of August right through to the 31st, the swell is tiny and the wind is mostly onshore or cross. A long stretch of nothing, so don’t bother.

Then, right at the start of September, we get another interesting pulse. On Tuesday the 1st of September, the swell jumps up to a solid 10-foot from the SW. That’s a big number, and the combined energy is a strong 1599. The wind is light and cross in the morning, and cross-offshore in the afternoon. This is a big swell, over 8 feet, so it’s strictly for experts. The period is a short 8-9 seconds, so it’s more of a wind swell, and it’s coming from the SW, which is not the best direction for this spot. A point break might handle it, but on a beach setup, it could be a bit of a washing machine. Still, it’s a big day.

The absolute standout of the whole forecast, though, is Wednesday the 2nd of September. The morning has an 8-foot S swell with an 11-second period, and the wind is a clean offshore from the NE at 25 km/h. The combined energy is a massive 2939. The afternoon is even better for the conditions, with a 8-foot S swell and the same clean offshore wind, and the energy is 2247. The notes call it ‘excellent surf conditions for experienced surfers’. That’s about as good as it gets in this window. The swell is big, but it’s not too huge for a strong surfer, and the wind is perfect. This is the one to mark on the calendar. It’s a week away, so keep an eye on it.

After that, it drops off again. The 3rd and 4th of September bring onshore winds and smaller surf.

So, for the best on offer, you’ve got two little windows. The first is Tuesday the 25th and Wednesday the 26th of August – clean, offshore winds, with a chest to head-high swell. The second, and the absolute standout, is Wednesday the 2nd of September. That day has a solid 8 to 8-foot S swell with a perfect offshore breeze. It’s big, it’s clean, and it’s got a lot of energy behind it. That’s the one for the experienced crew.

Stay safe out there.

Rusty

Short Range Forecast

Light rain (total 9mm), mostly falling on Thu afternoon. Very mild (max 11°C on Thu afternoon, min 7°C on Thu night). Mainly strong winds.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Wed morning, min 5°C on Sun night). Wind will be generally light.

Thu
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
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
0
0
0
0
0
2
3
2
3
3
2
3
3
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
E
8
1.6
SSW
5
2.1
S
8
2
S
8
1.9
S
9
1.9
SSW
10
1.6
S
11
1.6
S
11
2.4
S
13
2.5
SSE
15
2.2
SSE
14
1.8
SSE
13
1.7
SSE
12
1.5
SSE
12
1.3
SSE
11
1.2
SSE
11
1.4
SSE
14
1.2
SE
13
1.1
SE
13
1
SE
13
Wave Graph
Metric surfscale
Energy kJ
12
128
491
520
606
678
599
632
1952
3074
1886
1009
820
603
416
353
710
509
444
331
Wind (km/h)
15
SSW
40
SSW
30
SSW
30
SSW
20
SW
30
WSW
35
WSW
25
W
30
SSW
25
SSW
10
S
5
SE
10
SE
10
ENE
10
NNE
15
ENE
20
NE
20
NNE
15
NE
10
NNE
Wind State
on
on
on
on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross
cross-off
off
cross-off
off
off
off
off
High Tide
2:50AM0.18m
6:45AM0.19m
2:12PM0.29m
7:42AM0.19m
3:08PM0.28m
5:58AM0.18m
4:07PM0.28m
6:10AM0.18m
5:03PM0.28m
6:33AM0.19m
5:56PM0.28m
6:56AM0.20m
6:44PM0.28m
Low Tide
9:47PM0.06m
4:18AM0.18m
10:38PM0.07m
9:43AM0.18m
11:32PM0.07m
6:50AM0.18m
00:27AM0.08m
8:42AM0.18m
1:21AM0.08m
9:42AM0.17m
2:10AM0.09m
1:43PM0.16m
2:54AM0.10m
mod rain
part cloud
part cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:11
7:11
7:09
7:09
7:07
7:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:10
6:12
6:12
6:13
6:14
6:15
6:15
 mm
9
Temp °C
11
11
8
9
9
8
9
10
8
8
7
6
6
6
9
11
9
15
17
14
Feels °C
7
6
0
1
3
1
2
4
0
1
2
2
2
3
5
7
4
11
15
12
  • 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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