
Surf Forecasts:
Bikini surf forecast from 12 Aug 2026:
- Best quality surf: Friday 14 Aug, 12AM (local time) - 5.5ft (1.7m), 13s period, SSE swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 12AM (local time) - 5.5ft (1.7m), 13s period, SSE swell with 876 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 3AM (local time) - 4.5ft (1.4m), 11s 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 Wednesday (Aug 12) at 3AM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 0.1m and 9s. 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 1.7m 13s and forecast to arrive on Friday (Aug 14) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Saturday (Aug 15) at 12PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 12th Aug) | 4.5ft (1.4m) 11s |
| Best Surf | 12AM (Fri 14th Aug) | 5.5ft (1.7m) 13s |
| Most Powerful | 12AM (Fri 14th Aug) | 5.5ft (1.7m) 13s |
Table - best surf conditions forecast for Bikini over the next 16 days.
The Lowdown
Alright, grab your board, let’s talk about Bikini.
The next couple of weeks are a bit of a mixed bag. We’ve got some clean windows, but there are also some proper junky stretches where you might be better off waxing your board at home. The main swell window is out of the south, and it's all about catching the moments when the wind and tide line up.
Right out of the gate, Wednesday the 12th is looking pretty average. We’ve got about 5 feet of SSE swell pushing through, but it’s riddled with cross-shore breeze and slight chop. It’s surfable, but it’s not going to be pretty. The energy is moderate though, with a combined swell energy reading at 565. Early on the 12th, the swell is hanging around 11 seconds, but by the afternoon it's a touch longer at 13 seconds, which is a sign of some groundswell in the mix. Still, the conditions just aren't there.
Thursday the 13th, the morning is a write-off. The swell drops to about 3 feet and the wind is up, making it poor. But keep an eye on the afternoon. The wind switches to a cross-offshore, cleaning things up. It's still only 3 feet of SSE swell, but it’s clean and rideable. The energy is moderate at 331, and it feels like a small, fun wave if you've got a high-volume board. Friday the 14th is similar, with a bit more size in the morning at about 4 feet, but the wind is a bit stronger. Still clean, but not a standout.
Then we hit a proper flat spell. Saturday the 15th and Sunday the 16th are small and weak. Saturday’s swell is all over the place, and in the afternoon, a junk 5-foot E swell shows up with a short 6-second period, which is just messy. The energy is low, and there’s nothing doing. Sunday the 16th is a touch better with glassy conditions in the afternoon, but it’s only about 4 feet of short-period E swell. It’s surfable, but very ordinary. Then Monday and Tuesday the 17th and 18th are blown out, with onshore winds and choppy, poor conditions. Monday has a 4-foot E swell, but the wind kills it. Tuesday has a bit more size but it's a mess.
The next real window of note is Wednesday the 19th, but it's for experts only. The swell jumps to about 8 feet in the morning, but it’s a short-period SE windswell, and it’s coming with a strong cross-offshore breeze. The energy is strong, hitting 574 in the morning, and the waves will be big and powerful. The afternoon sees it jump even more, to over 8 feet, but the wind cranks up to 45 km/h, and it’s going to be a raw, powerful, and challenging session. This is not a day for the faint of heart.
After that, it all falls apart. Thursday the 20th has a lot of energy but strong winds and messy conditions. Friday the 21st through to Tuesday the 26th is a pretty bleak run of small, onshore, and choppy surf. There are a few days there where the swell is down below 3 feet with weak energy, and it’s just not worth the effort. The wind is a constant problem.
Now, here’s the light at the end of the tunnel. That long-range call for Monday the 24th looks promising. The morning could be your standout. We’re looking at a 6-foot S swell, with a 6-second period and a clean cross-offshore breeze. The energy is moderate at 213, and the conditions look clean. This is the kind of day you want to clear your schedule for. It’s not huge, but it’s clean, and at Bikini, a clean 6-foot S swell is a whole lot of fun.
The rest of the second week is a bit of a lottery. The swell is inconsistent, and the wind just doesn’t want to cooperate. There's a bit more size around the 24th afternoon but the wind goes onshore. The 27th sees a 6-foot S swell, but the wind is on it, making it poor. Honestly, the morning of the 24th is your best bet for a proper session. It’s a week out, so don’t book the day off work yet, but it’s the one that’s got my attention.
Remember, it’s a fickle stretch, but there are waves to be had if you pick your moments.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed afternoon. Very mild (max 13°C on Fri afternoon, min 7°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 23mm), heaviest during Sun night. Very mild (max 18°C on Sun afternoon, min 9°C on Mon afternoon). Winds decreasing (fresh winds from the ENE on Sat morning, calm by Sun afternoon). | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | SSE 11 | SSE 11 | SSE 13 | SSE 14 | S 13 | SSE 12 | SSE 13 | SSE 12 | S 11 | SSE 10 | SSE 9 | E 6 | E 6 | E 8 | E 8 | E 9 | E 10 | E 10 | S 6 |
Wave Graph | |||||||||||||||||||
553 | 563 | 755 | 571 | 324 | 293 | 876 | 404 | 242 | 133 | 92 | 190 | 176 | 159 | 165 | 157 | 219 | 172 | 235 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | glassy | on | on | on | cross-on |
High Tide | 6:54AM0.23m | 12:07PM0.13m | 7:20PM0.36m | 7:43AM0.26m | 8:16PM0.34m | 8:32AM0.29m | 9:10PM0.31m | 9:20AM0.31m | 10:02PM0.28m | 10:07AM0.32m | 10:53PM0.25m | 3:18AM0.20m | 11:44PM0.23m | ||||||
Low Tide | 2:46AM0.04m | 10:49AM0.12m | 2:33PM0.10m | 3:39AM0.06m | 3:40PM0.07m | 4:28AM0.08m | 4:40PM0.04m | 5:15AM0.09m | 5:35PM0.02m | 1:35AM0.20m | 6:00AM0.11m | 6:28PM0.02m | 6:44AM0.12m | 7:19PM0.02m | |||||
— | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | |
6:04 | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | |
mm | — | — | 2 | — | — | 1 | — | — | — | 1 | 2 | — | — | — | — | 13 | 7 | — | — |
Temp °C | 8 | 9 | 9 | 8 | 11 | 11 | 11 | 12 | 13 | 12 | 12 | 13 | 14 | 17 | 18 | 13 | 10 | 9 | 8 |
Feels °C | 5 | 6 | 6 | 3 | 7 | 8 | 7 | 8 | 8 | 7 | 7 | 8 | 14 | 17 | 19 | 12 | 7 | 3 | 1 |
Swell 1 Height (m) Direction Period (s) | SSE 11 | SSE 11 | SSE 13 | SSE 14 | S 13 | SSE 12 | SSE 13 | SSE 12 | S 11 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | E 8 | E 8 | E 9 | E 10 | E 10 | E 10 |
553 | 563 | 755 | 571 | 324 | 293 | 876 | 404 | 242 | 133 | 92 | 65 | 46 | 159 | 165 | 157 | 219 | 172 | 102 | |
Swell 2 Height (m) Direction Period (s) | E 10 | E 9 | E 8 | E 8 | E 8 | E 8 | — | — | — | — | — | S 9 | — | SSE 9 | SSE 9 | SSE 8 | — | S 9 | ESE 7 |
2 | 2 | 1 | 1 | 1 | 1 | — | — | — | — | — | 41 | — | 26 | 26 | 13 | — | 1 | 5 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 10 | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 5 | SE 5 | SSE 5 | — | E 5 | E 6 | E 6 | E 6 | E 6 | E 6 | — | — | — | S 4 | SSW 5 | S 6 |
— | — | — | 37 | 57 | 37 | — | 71 | 72 | 78 | 125 | 190 | 176 | — | — | — | 28 | 80 | 235 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 143 | 540 | 143 | 539 | 0 | 0 | 103 | 103 | 103 | 143 | 539 | 467 | 0 | 0 | 62 | 717 | 390 | 540 |
Best forecast wave conditions in Uruguay - South | |||||||||||||||||||
Best forecast wave conditions in Uruguay | |||||||||||||||||||
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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.











