Surf Forecasts:
Bikini surf forecast from 13 Aug 2026:
- Best quality surf: Thursday 13 Aug, 6PM (local time) - 4.5ft (1.4m), 11s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 3PM (local time) - 13ft (4.0m), 9s period, SW swell with 2,327 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 6PM (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 Thursday (Aug 13) at 6PM. The primary swell is predicted to be 1.4m and 11s period with a secondary swell of 0.1m and 8s. 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 4.0m 9s and forecast to arrive on Thursday (Aug 20) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 8s period and expected on Sunday (Aug 16) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 13th Aug) | 4.5ft (1.4m) 11s |
| Best Surf | 6PM (Thu 13th Aug) | 4.5ft (1.4m) 11s |
| Most Powerful | 3PM (Thu 20th Aug) | 13ft (4.0m) 9s |
Table - best surf conditions forecast for Bikini over the next 16 days.
The Lowdown
Alright, grab your board and listen up, this is Rusty.
Alright folks, let's be straight about it. Bikini is our only break in the window, and honestly, it’s a bit of a mixed bag. The next couple of weeks are going to be a real test of patience. We've got a lot of messy, windy days to wade through before we see any real magic, and even that magic comes with a catch.
The first few days are pretty cooked. Thursday morning, August 13th, is blown out with a strong cross-shore and the water temp is sitting at 53°F, which is about average for this time of year. The swell is a weak 3ft from the south, but it’s got poor surf conditions, so not much to get excited about. The afternoon cleans up a bit with a 5ft SSE swell and some shoulder-high waves, and the combined energy jumps to a moderate 513. It’s looking rideable, but nothing that’ll blow your mind.
Friday and Saturday are a write-off. Strong winds from the east-northeast are making a mess of things. The swell drops right off, hitting a low of 2ft on Saturday morning with only 92 in combined energy. Saturday afternoon actually pushes 5ft, but it’s a short-period, sloppy windswell from the east with a period of just 6 seconds. That’s more of a kite-surfing setup than a paddling one if you ask me.
We get a little reprieve on Sunday morning, August 16th. The wind goes glassy from the NNE, and there’s a clean 4ft swell from the east. The combined energy is 190, so it’s weak, but those clean conditions are a rare treat. It’s the kind of session where you just enjoy being in the water, even if the waves are ordinary. After that, we hit another flat, windy stretch that lasts all the way through the end of the week. Tuesday morning, August 18th, offers a 5ft SSE swell, but southerly cross-onshore winds are just chopping it up, so it’s a no-go.
Now, here’s where it gets interesting. Mark your calendars for Monday, August 25th. It’s still a week and a half out, so take the long-range call with a grain of salt, but the charts are showing a proper groundswell from the SSE with a solid period of 11 seconds. The waves are hitting 6ft and the combined energy is a strong 858. The wind is off from the east, light, and clean. That is going to be a proper session for the experienced crew. This is the one to wait for.
Then, the real standout of the whole run hits on Wednesday, August 26th. We’re looking at a 16-second period groundswell from the southeast. That’s a very long period, which means it’s packing a punch and will run hard. The swell is 4ft in the morning, but the combined energy is a massive 1167. The wind is light and offshore from the east-northeast. The conditions are clean. This is the one. For experienced surfers, this is as good as it gets. Just keep in mind, with a period that long, it’s going to want to break a little straight on the beach, so the point break sections at Bikini are where you’ll want to be. It’s an advanced break that’s very consistent, and crowds are often present, so expect company.
Thursday morning, August 27th, still has some leftover energy with a 4ft SE swell and clean offshore wind. It’s a good option to keep the stoke going. After that, the forecast falls apart again as we head into the weekend.
In short: suffer through the slop this week, then get ready for some serious waves around the 25th and 26th of August. The potential is huge.
- Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Thu afternoon. Very mild (max 18°C on Sun morning, min 11°C on Thu afternoon). Winds decreasing (fresh winds from the ENE on Sat morning, light winds from the NE by Sun morning). | Days 5-7 Weather SummaryHeavy rain (total 131mm), heaviest during Tue morning. Very mild (max 17°C on Sun afternoon, min 9°C on Sun night). Winds increasing (light winds from the SSW on Sun night, fresh winds from the S by Tue night). | |||||||||||||||||||
Thu 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | ||||||||||||||
PM | 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 12 | SSE 12 | SSE 12 | SSE 11 | SSE 10 | SSE 10 | E 6 | E 7 | E 8 | E 9 | E 9 | E 10 | E 10 | E 10 | SSE 6 | S 6 | ESE 7 | ESE 8 | ESE 9 | ESE 8 |
Wave Graph | ||||||||||||||||||||
488 | 784 | 404 | 249 | 131 | 94 | 196 | 255 | 163 | 175 | 168 | 159 | 175 | 73 | 72 | 51 | 361 | 534 | 656 | 601 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | on | cross-on |
High Tide | 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 | 4:12AM0.20m | 00:37AM0.21m | 5:02AM0.19m | 12:31PM0.31m | 1:36AM0.19m | ||||||
Low Tide | 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 | 7:26AM0.14m | 8:09PM0.03m | 3:09AM0.18m | 8:58PM0.04m | ||||||
— | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | |
6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | |
mm | 1 | — | — | — | — | — | 2 | — | — | — | — | — | 13 | 43 | 34 | 29 | 12 | — | — | — |
Temp °C | 12 | 11 | 12 | 12 | 12 | 12 | 13 | 15 | 18 | 17 | 12 | 9 | 9 | 10 | 11 | 12 | 12 | 11 | 11 | 10 |
Feels °C | 9 | 7 | 7 | 7 | 7 | 6 | 8 | 15 | 18 | 15 | 11 | 5 | 5 | 6 | 6 | 8 | 8 | 7 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | E 8 | E 9 | E 9 | E 10 | E 10 | E 10 | E 9 | S 6 | SSW 7 | SSW 7 | SSW 6 | — |
488 | 784 | 404 | 249 | 131 | 94 | 65 | 47 | 163 | 175 | 168 | 159 | 175 | 73 | 43 | 51 | 9 | 4 | 4 | — | |
Swell 2 Height (m) Direction Period (s) | E 8 | — | — | — | — | — | — | — | SSE 9 | SSE 9 | SSE 8 | E 12 | S 9 | S 9 | SW 6 | ENE 9 | — | — | — | — |
1 | — | — | — | — | — | — | — | 27 | 26 | 13 | 26 | 2 | 2 | 16 | 47 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | S 11 | S 8 | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | 2 | 5 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | E 5 | E 5 | E 6 | E 6 | E 6 | E 7 | — | — | SSW 3 | S 4 | S 5 | S 5 | SSE 6 | ESE 5 | ESE 7 | ESE 8 | ESE 9 | ESE 8 |
— | — | 57 | 70 | 102 | 154 | 196 | 255 | — | — | 1 | 6 | 27 | 71 | 72 | 56 | 361 | 534 | 656 | 601 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 103 | 103 | 103 | 103 | 103 | 436 | 539 | 65 | 0 | 16 | 62 | 540 | 756 | 540 | 675 | 399 | 143 | 540 | 390 | 242 |
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.











