Bikini Surf Break

Lat Long: 34.88° S 54.77° W

Bikini Surf Forecast and Surf Report

Issued: 8 pm 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Bikini sea temperature is
13.4°C
2.0° 

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


Bikini surf forecast from 13 Sep 2026:

  • Best quality surf: Wednesday 16 Sep, 3PM (local time) - 4.5ft (1.4m), 10s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Sunday 13 Sep, 6AM (local time) - 7ft (2.1m), 8s period, SSE swell with 520 kJ wave energy.
  • Next surfable swell (1★+): Monday 14 Sep, 6AM (local time) - 2.5ft (0.7m), 10s period with S 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 14) at 6AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.9m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Bikini in the next 16 days are 2.1m 8s and forecast to arrive on Sunday (Sep 13) at 6AM. 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 Saturday (Sep 19) at 6PM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 14th Sep)2.5ft (0.7m) 10s
Best Surf 3PM (Wed 16th Sep)4.5ft (1.4m) 10s
Most Powerful 6AM (Sun 13th Sep)7ft (2.1m) 8s

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


The Lowdown

Alright, let’s get into it. The next couple of weeks are a mixed bag, to be honest. We’ve got a slow start, a few windows of clean but tiny surf, and then a bit of a pulse of energy that’s mostly going to be messy. You’re gonna want to pick your moments.

Right off the bat, Sunday the 13th is a write-off. We’ve got a solid 6ft of SSE short-period swell but it’s cross-onshore and choppy. Not worth paddling out for the mayhem. That energy is all over the place, and we’re seeing that moderate wave energy (451) but it’s just poor quality.

Monday the 14th is where things settle down. The swell drops to 2ft from the south with a 10-second period. The big news is the wind goes glassy in the morning. That’s clean surf, but it’s small. Still, on a beach and point setup like Bikini (Big Island), you can find a few fun ones if you’re patient. Energy is weak (167). Afternoon stays glassy but gets a touch of cross-shore ripple, so the morning is the pick there.

Tuesday the 15th is junk. Wind is howling cross and onshore, waves are all over the place. Nothing to see here.

Wednesday the 16th is interesting. The morning still has some cross-onshore chop, but the afternoon flips to a light cross-offshore breeze. That’s a big win. We’ve got 5ft of SSE swell with a 10-second period. It’s clean, and the energy is moderate (391). This is your first real highlight of the period. The break will have some push to it, and the offshore wind will hold it up nicely. Expect some fun, rippable waves.

Thursday the 17th is a bit of a letdown after that. Swell drops to 3ft, but the wind goes offshore from the NNE, so it’s clean. Just smaller and more ordinary. You’ll get some waves, but it’s not the standout.

Then we hit a real flat spell. From Friday the 18th right through to Tuesday the 22nd, the swell just fades away. We’re talking 0.7ft to 1ft. Some of it is clean, some of it glassy, but there’s just no power. You’re better off doing something else. That’s about five days of nothing.

Now, here’s where it gets interesting, but not necessarily good. Wednesday the 23rd brings a bigger pulse of SSW swell, jumping to 6ft in the morning and staying around 5ft in the afternoon. The problem is the wind is onshore and fresh, and it’s messy. The energy is strong (633 in the morning, 647 in the afternoon), but it’s all chop. Not a surfable day.

Thursday the 24th has a similar issue. Swell is still solid at 5ft from the SSE, with a long 12-second period. But the wind is straight onshore, and it just looks poor. The energy is still strong (689), but the quality is lacking. I’d skip it.

Friday the 25th drops back down to 3ft, but the wind turns cross-offshore from the NNW and it’s clean. It’s a small, clean day. Nothing big, but if you’re desperate, you can get a few.

Saturday the 26th is another tiny day, but the wind is offshore or cross-offshore. Just no size.

Then Sunday the 27th throws a bit of a curveball. The morning is a small 3ft from the east with offshore wind, clean but weak. But the afternoon, the swell jumps to 6ft from the SSW, with a light offshore wind from the north. It’s clean, and that energy is moderate to strong (278). This is the second standout of the period. It’s a bit of a longer-period swell, so watch out for it to be a bit walled at the beach, but on the point, it could be firing.

Monday the 28th is back onshore and junky, so that’s where we end.

So, to wrap it up. Your two real windows are Wednesday the 16th afternoon and Sunday the 27th afternoon. Both have decent size, clean winds, and moderate energy. Everything else is either too small, too messy, or both. For the rest of the time, you’ll be looking at a lot of flat or ugly water. It’s a waiting game, but those two sessions are worth it.

Rusty out.

Short Range Forecast

Mostly dry. Very mild (max 13°C on Tue morning, min 8°C on Sat night). Winds increasing (calm on Mon morning, fresh winds from the SW by Tue afternoon).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 17°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light.

Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
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
1
1
0
1
0
0
0
0
2
2
1
1
1
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)
1.9
S
8
1.9
SSE
8
1.5
SSE
8
0.9
SSE
10
0.7
S
10
0.7
S
10
0.6
S
9
0.4
S
9
1.3
SW
5
1.6
S
7
1.5
S
10
1.4
SSE
10
1.3
SSE
9
1
SSE
9
0.8
SSE
8
0.7
SSE
8
0.4
SE
8
0.3
SE
7
0.2
S
12
Wave Graph
Metric surfscale
Energy kJ
464
427
271
160
98
94
63
30
96
243
440
386
293
154
92
61
15
9
11
Wind (km/h)
25
S
20
S
15
SSE
5
ESE
5
SE
5
SE
10
NNW
25
WNW
30
SW
20
S
10
S
15
E
20
NNE
20
NNE
15
NNE
15
NNE
5
ENE
15
SE
10
E
Wind State
cross-on
cross-on
cross-on
cross
glassy
cross
cross-off
cross
on
cross-on
cross-on
cross-off
off
off
off
off
glassy
cross
cross-off
High Tide
1:17AM0.20m
8:56AM0.34m
9:45PM0.26m
9:41AM0.34m
10:31PM0.24m
3:17AM0.19m
11:16PM0.22m
4:11AM0.19m
00:02AM0.20m
5:02AM0.19m
00:52AM0.19m
5:52AM0.19m
12:31PM0.30m
1:52AM0.18m
Low Tide
00:27AM0.20m
4:47AM0.12m
5:16PM0.01m
00:56AM0.19m
5:29AM0.14m
6:04PM0.01m
6:10AM0.15m
6:51PM0.02m
6:50AM0.16m
7:37PM0.03m
7:27AM0.17m
8:22PM0.05m
3:11AM0.17m
9:07PM0.06m
cloud
cloud
cloud
cloud
part cloud
cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:39
6:39
6:37
6:35
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:27
6:28
6:29
6:30
6:30
6:30
6:31
 mm
Temp °C
9
9
9
9
10
10
10
13
12
8
9
11
9
14
17
14
16
16
13
Feels °C
3
3
4
5
9
8
8
7
5
2
6
7
4
10
13
12
14
13
11
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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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