Surf Forecasts:
Bikini surf forecast from 18 Aug 2026:
- Best quality surf: Monday 24 Aug, 3AM (local time) - 6.5ft (2.0m), 13s period, SSE swell with glassy winds.
- Most powerful swell: Sunday 23 Aug, 9PM (local time) - 7ft (2.2m), 14s period, SSE swell with 1,765 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 12PM (local time) - 2ft (0.6m), 7s 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 Wednesday (Aug 19) at 12PM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.4m and 6s. 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 2.2m 14s and forecast to arrive on Sunday (Aug 23) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Monday (Aug 24) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Wed 19th Aug) | 2ft (0.6m) 7s |
| Best Surf | 3AM (Mon 24th Aug) | 6.5ft (2.0m) 13s |
| Most Powerful | 9PM (Sun 23rd Aug) | 7ft (2.2m) 14s |
Table - best surf conditions forecast for Bikini over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk about what’s on offer for the Atlas region. The next week and a half is a bit of a mixed bag, but there’s a solid window of good waves if you’re patient. We’re looking at Bikini, a beach and point setup that likes a south swell. The water temp is right around average for this time of year, so no surprises there.
The start of the run is a bit of a write-off. Tuesday the 18th through to the 23rd is mostly choppy, lumpy, and wind-affected, with cross-on winds and fairly weak, short-period swell. The wave energy is moderate at best, sitting around 169 (moderate) on Tuesday morning, and it just doesn’t get it together. The swell is small and messy, so you’re not missing much.
Then we get to the real standout. Monday the 24th is where it’s at. The morning has a 6ft swell from the SSE (13-second period, long groundswell) with glassy conditions. That's a strong wave energy reading of 1156 (strong), and the report says excellent surf conditions for experienced surfers. This is a point break, so that long period will wrap in nicely. The wind is glass, dead calm. This is the best on offer. The afternoon on the 24th stays clean with a 5ft SSE swell, cross-off wind, and energy at 718 (strong). This is a very good day.
Tuesday the 25th morning is still decent with a 4ft SSE swell and offshore wind from the NE, but the energy drops to 265 (moderate). It’s worth a paddle, but it’s not the same quality as the day before.
From Wednesday the 26th onward, the surf winds down. The swell drops to under 3ft, and the energy is weak (137 down to 56). Conditions are mostly clean, but the waves are small and ordinary. There’s a brief window on the 27th morning with a little 3ft SE swell and offshore wind, but it’s marginal. The last real look is Wednesday the 2nd of September, with a 3ft SSE swell and offshore wind, energy at 314 (moderate), which could give a few fun ones, but it’s a long way out and less certain.
So, the bottom line: if you want the best, set your alarm for Monday the 24th. The rest of the fortnight is either small, wind-affected, or both. The spot is consistent, so even when it’s poor, it tends not to stay that way forever.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Thu morning. Very mild (max 11°C on Wed afternoon, min 7°C on Tue night). Winds increasing (calm on Thu morning, strong winds from the SSW by Thu night). | Days 4-6 Weather SummaryMostly dry. Mild temperatures (max 9°C on Fri night, min 6°C on Sun night). Winds decreasing (fresh winds from the S on Fri morning, calm by Sun night). | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
AM | 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 6 | SSE 6 | S 7 | S 7 | S 7 | S 7 | S 7 | SSE 7 | SSW 4 | S 7 | S 7 | S 7 | SSW 6 | SSW 9 | S 11 | S 11 | S 13 | SSE 14 | SSE 12 | SSE 12 | SSE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 169 | 131 | 70 | 50 | 39 | 24 | 14 | 9 | 13 | 293 | 279 | 302 | 265 | 544 | 646 | 764 | 1380 | 1705 | 847 | 579 | 380 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross | cross-off | off | cross-off | cross-on | on | on | on | on | cross-on | cross-on | cross | cross-on | on | cross-on | off | cross-off | off |
High Tide | 11:43AM0.32m | 00:37AM0.21m | 5:02AM0.19m | 12:31PM0.31m | 1:36AM0.19m | 5:52AM0.19m | 1:20PM0.30m | 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 | |||||
Low Tide | 8:09PM0.03m | 3:09AM0.18m | 8:58PM0.04m | 3:45AM0.18m | 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 | ||||||||
 |  |  |  | |  | | | | | |  | |  |  | | | | | | | |
 | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — |
 | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — |
mm | 2 | — | — | — | — | 1 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 9 | 9 | 8 | 9 | 11 | 10 | 10 | 11 | 11 | 8 | 8 | 9 | 9 | 9 | 8 | 9 | 9 | 8 | 8 | 11 | 9 |
Feels °C | 4 | 5 | 4 | 6 | 8 | 6 | 9 | 9 | 8 | 0 | 0 | 3 | 2 | 2 | 3 | 3 | 3 | 4 | 4 | 7 | 4 |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 9 | S 7 | S 7 | S 7 | S 7 | S 7 | ENE 8 | E 4 | E 6 | E 7 | E 8 | E 8 | E 8 | E 9 | E 10 | S 13 | SSE 14 | SSE 12 | SSE 12 | SSE 11 |
| kJ | 29 | 16 | 70 | 50 | 39 | 24 | 14 | 13 | 3 | 3 | 9 | 1 | 1 | 1 | 2 | 2 | 1380 | 1705 | 847 | 579 | 380 |
Swell 2 Height (m) Direction Period (s) | — | — | E 6 | E 5 | ESE 6 | E 5 | E 8 | SSE 7 | E 8 | E 8 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 25 | 15 | 10 | 5 | 12 | 9 | 5 | 1 | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | ENE 9 | ENE 9 | ENE 8 | ENE 8 | SE 13 | E 3 | E 12 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 15 | 7 | 7 | 7 | 6 | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 6 | SSE 6 | — | — | — | E 3 | ENE 2 | — | SSW 4 | S 7 | S 7 | S 7 | SSW 6 | SSW 9 | S 11 | S 11 | — | — | — | — | NE 4 |
| kJ | 169 | 131 | — | — | — | 1 | 1 | — | 13 | 293 | 279 | 302 | 265 | 544 | 646 | 764 | — | — | — | — | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 390 | 390 | 424 | 266 | 288 | 0 | 479 | 926 | 947 | 675 | 540 | 939 | 242 | 147 | 150 | 62 | 150 | 150 | 67 | 0 | 0 |
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.
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