Surf Forecasts:
Bikini surf forecast from 9 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 9PM (local time) - 5ft (1.6m), 10s period, SSE swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 12AM (local time) - 8ft (2.5m), 12s period, S swell with 2,129 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 12AM (local time) - 1.5ft (0.5m), 14s 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 Thursday (Sep 10) at 12AM. The primary swell is predicted to be 0.5m and 14s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Bikini in the next 16 days are 2.5m 12s and forecast to arrive on Wednesday (Sep 16) at 12AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Sunday (Sep 13) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Thu 10th Sep) | 1.5ft (0.5m) 14s |
| Best Surf | 9PM (Wed 16th Sep) | 5ft (1.6m) 10s |
| Most Powerful | 12AM (Wed 16th Sep) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Bikini over the next 16 days.
The Lowdown
G'day, I'm Rusty, and let's talk about the surf outlook for Bikini, a beach and point setup that's mostly for the advanced crew. The water's sitting at 55°, which is a touch warmer than what you'd normally expect around here this time of year.
Look, I'm not gonna sugarcoat it – the first week is a bit of a struggle. We've got a couple of days of some tiny, weak swell from the south-southeast, with energy in the 89 to 46 range, and it's crossed up with a cross-offshore breeze, but it's just not doing much. On the 10th and 11th, the swell is a measly 1 ft to 1.3 ft, and the period is all over the shop, from 16 seconds down to 9. The waves are there but they're ordinary.
The real kicker comes on the 12th of September (Saturday). The swell bumps up to 6.2 ft to 6.6 ft from the south-southeast, but the period is a short, weak 6 to 8 seconds, and the wind is a nasty cross-onshore, making it lumpy. The energy jumps to 310 and then 511 (moderate), but the conditions are just poor. Then on the 15th (Tuesday) the wind screams onshore at 28 mph with an 8.2 ft swell, making it a total mess – that's experts-only territory if you're silly enough to try, and the energy is a strong 896.
The real standout and the only window of decent surf is definitely on Thursday the 17th of September. We've got a moderate offshore wind from the north, and the swell is a solid 4.6 ft from the SSE with a long 11-second period. The energy is moderate (448) and the waves are clean and well-shaped. This is the best on offer, and with the winds being offshore, it's gonna be a ripper morning. The swell is a bit too big for beginners though. The afternoon sees the swell drop to 3.3 ft, still clean with offshore winds, so it's a solid day all around. The break is very consistent, but crowds are often around, so you'll have to share.
The rest of the run into the second week fades out. The 18th has some tiny glassy 2 ft waves, but it's really small. From the 19th to the 24th, it's mostly poor with tiny swell and messy winds, so you're looking at a long gap with no real recommendations.
So, for the whole 16-day window, the only true shout is the 17th of September. That's your day.
Short Range ForecastMostly dry. Very mild (max 14°C on Wed afternoon, min 10°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 15°C on Mon afternoon, min 9°C on Sat night). Winds increasing (light winds from the NE on Mon morning, strong winds from the SSW by Tue morning). | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 16 | S 14 | SSE 12 | S 11 | S 10 | S 10 | S 9 | SE 4 | SSE 6 | SSE 8 | SSE 8 | S 11 | S 10 | S 10 | SSE 11 | SSE 10 | S 9 | SW 5 | S 8 | S 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 48 | 93 | 46 | 37 | 18 | 17 | 15 | 24 | 266 | 508 | 244 | 242 | 171 | 90 | 150 | 106 | 41 | 70 | 890 | 2129 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | off | off | cross-off | cross-off | cross-on | on | on |
High Tide | 6:16PM0.32m | 6:35AM0.26m | 7:15PM0.31m | 7:24AM0.29m | 8:08PM0.29m | 8:10AM0.32m | 8:58PM0.28m | 8:56AM0.34m | 9:45PM0.26m | 9:41AM0.34m | 10:31PM0.24m | 3:17AM0.19m | 11:16PM0.22m | |||||||
Low Tide | 2:25AM0.08m | 2:35PM0.06m | 3:15AM0.10m | 3:33PM0.03m | 4:02AM0.11m | 4:26PM0.01m | 00:27AM0.20m | 4:47AM0.12m | 5:16PM0.01m | 00:56AM0.19m | 5:29AM0.14m | 6:04PM0.01m | 6:10AM0.15m | 6:51PM0.02m | ||||||
 |  |  | |  |  | | | | | | | |  | | | | | | | |
 | — | — | 6:46 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — |
 | 6:24 | — | — | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:29 | — | — | 6:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 12 | 13 | 14 | 12 | 13 | 13 | 12 | 11 | 11 | 10 | 11 | 11 | 11 | 13 | 15 | 13 | 13 | 8 | 7 |
Feels °C | 10 | 8 | 10 | 11 | 9 | 8 | 10 | 8 | 5 | 5 | 5 | 7 | 7 | 7 | 11 | 12 | 10 | 7 | -3 | -3 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 14 | SSE 12 | S 11 | S 10 | S 10 | S 9 | E 8 | E 7 | E 13 | SSE 8 | S 11 | S 10 | E 7 | SSE 11 | SSE 10 | S 9 | E 9 | E 9 | — |
| kJ | 24 | 93 | 46 | 37 | 18 | 17 | 15 | 5 | 44 | 3 | 244 | 242 | 171 | 58 | 150 | 106 | 41 | 14 | 6 | — |
Swell 2 Height (m) Direction Period (s) | SSE 16 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 13 | — | — | E 7 | E 7 | SE 7 | S 10 | E 6 | E 9 | ENE 4 | ENE 6 | — | — |
| kJ | 48 | 5 | 17 | 10 | 10 | 10 | 4 | 3 | — | — | 85 | 51 | 15 | 90 | 20 | 6 | 3 | 4 | — | — |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 8 | — | — | — | E 10 | E 8 | E 13 | — | — | — | SE 7 | SE 7 | SE 12 | ENE 8 | ENE 8 | ESE 6 | — | — | — |
| kJ | 3 | 3 | — | — | — | 2 | 1 | 3 | — | — | — | 21 | 16 | 34 | 14 | 14 | 7 | — | — | — |
Wind waves Height (m) Direction Period (s) | ESE 8 | ENE 3 | — | — | E 3 | ESE 3 | ESE 4 | SE 4 | SSE 6 | SSE 8 | — | — | E 7 | NE 3 | — | E 6 | — | SW 5 | S 8 | S 12 |
| kJ | 14 | 4 | — | — | 3 | 3 | 7 | 24 | 266 | 508 | — | — | 48 | 6 | — | 20 | — | 70 | 890 | 2129 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 288 | 288 | 434 | 675 | 1024 | 717 | 927 | 146 | 20 | 60 | 0 | 0 | 0 | 0 | 643 | 675 | 253 |
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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