Surf Forecasts:
Bikini surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 6AM (local time) - 4.5ft (1.3m), 9s period, SSE swell with glassy winds.
- Most powerful swell: Sunday 6 Sep, 9AM (local time) - 7ft (2.1m), 8s period, S swell with 572 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 12AM (local time) - 2.5ft (0.8m), 8s 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 Saturday (Sep 05) at 12AM. The primary swell is predicted to be 0.8m and 8s period with a secondary swell of 0.2m and 10s. 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 2.1m 8s and forecast to arrive on Sunday (Sep 06) at 9AM. 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 Thursday (Sep 10) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sat 5th Sep) | 2.5ft (0.8m) 8s |
| Best Surf | 6AM (Mon 7th Sep) | 4.5ft (1.3m) 9s |
| Most Powerful | 9AM (Sun 6th Sep) | 7ft (2.1m) 8s |
Table - best surf conditions forecast for Bikini over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s cooking at Bikini.
First up, the water temp is sitting at 56°, which is a touch warmer than usual for this time of year, so you might get away with a slightly thinner suit if you're brave.
Honestly, the first week and a half is a bit of a write-off. We’ve got a long stretch from Friday the 4th to about Wednesday the 9th of September where the conditions are just messy. The wind is mostly cross-on or onshore, and the swell is weak and short-period. The combined energy on Friday morning is only 123 (moderate), and it drops to a pathetic 85 on Saturday morning. It’s not worth paddling out for. The waves are poor, choppy, and blown out. Kite surfers might get a kick out of the strong cross-onshore winds on Saturday afternoon when the wind hits 22 mph, but for paddle surfing, it’s a no-go.
Things start to look a little more interesting on Monday the 7th. The morning shows a clean 4ft SSE swell with a 9-second period, and the wind is a light cross-offshore from the ENE at 6 mph. The combined energy is 233 (moderate), and the conditions are clean. It’s not a standout, but it’s the first surfable option in days. The break is a beach and point setup at Bikini, and it’s very consistent, so you’ll get waves. The swell is from the SSE though, which is not the optimum S direction, so the shape won’t be perfect. Still, for a Monday morning session, you could get a few fun ones.
The real standout comes much later. Keep an eye on Saturday the 19th of September. That morning we’ve got a solid 10ft SSW swell with a 9-second period, giving a combined energy of 1503 (strong). The wind is light and cross-off from the NNW at 6 mph, keeping the waves clean. This is excellent surf conditions for experienced surfers. The swell is over 8ft, so this is strictly for experts. The direction is SSW, which is close to the optimum S direction, so the waves should have some punch. The break is very consistent, but crowds are often, so expect some company. If you’re skilled and ready for a big day, this is the best on offer in the whole 16-day window.
There’s a long gap of poor surf from the 4th to the 6th, then a few surfable but ordinary days from the 7th to the 11th, another poor stretch from the 12th to the 14th, a bit of ordinary again on the 15th and 16th, and then a promising run from the 17th to the 19th. The 17th and 18th have clean, offshore conditions with 3ft to 3ft SSE and S swells, but nothing special. The 19th is the one to circle on the calendar.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat afternoon. Very mild (max 11°C on Fri morning, min 7°C on Sat night). Winds decreasing (fresh winds from the SSW on Sat afternoon, calm by Sun night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 15°C on Wed afternoon, min 8°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | SSW 6 | SSW 7 | S 8 | SSW 5 | SSW 6 | S 7 | S 8 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 10 | SSE 9 | E 6 | E 6 | E 7 | E 7 | E 7 | S 13 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 88 | 136 | 72 | 71 | 201 | 384 | 572 | 505 | 343 | 232 | 207 | 101 | 104 | 79 | 36 | 26 | 32 | 25 | 26 | 3 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross-on | on | on | cross-on | cross-on | cross | cross-off | cross-off | off | off | cross-off | off | glassy | cross-on | off | off | cross-off | off |
High Tide | 12:40PM0.37m | 1:39AM0.18m | 7:32AM0.18m | 1:39PM0.37m | 2:40AM0.18m | 8:26AM0.17m | 2:46PM0.36m | 3:45AM0.19m | 3:58PM0.34m | 4:47AM0.20m | 5:10PM0.33m | 5:43AM0.23m | 6:16PM0.32m | 6:35AM0.26m | 7:15PM0.31m | ||||||
Low Tide | 9:25PM0.01m | 4:22AM0.14m | 10:24PM0.02m | 5:26AM0.14m | 11:26PM0.04m | 6:48AM0.14m | 00:29AM0.05m | 8:32AM0.15m | 12:15PM0.13m | 1:29AM0.07m | 1:29PM0.09m | 2:25AM0.08m | 2:35PM0.06m | ||||||||
 | |  | |  |  |  |  |  | | | | | | | | | | | |  | |
 | 6:54 | — | — | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — |
 | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:24 | — | — | 6:24 | — | — | 6:25 | — |
mm | — | — | — | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 |
Temp °C | 11 | 11 | 10 | 11 | 10 | 9 | 8 | 9 | 8 | 10 | 9 | 11 | 14 | 14 | 12 | 14 | 15 | 13 | 16 | 16 | 13 |
Feels °C | 5 | 5 | 7 | 4 | 2 | 2 | 1 | 3 | 4 | 6 | 4 | 8 | 11 | 11 | 10 | 13 | 13 | 11 | 11 | 10 | 8 |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | S 8 | ESE 11 | E 10 | E 9 | E 9 | E 9 | SSE 9 | SSE 9 | SSE 9 | SSE 8 | SSE 10 | SSE 9 | E 6 | E 6 | E 7 | E 7 | E 7 | S 13 | E 8 |
| kJ | 35 | 20 | 72 | 11 | 9 | 2 | 2 | 2 | 343 | 232 | 207 | 101 | 104 | 79 | 36 | 26 | 32 | 25 | 26 | 3 | 12 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | S 14 | E 10 | E 9 | S 11 | — | — | — | E 8 | E 8 | E 8 | E 8 | E 5 | E 8 | S 8 | S 8 | S 11 | S 11 | S 13 | — | S 9 |
| kJ | 7 | 4 | 8 | 2 | 3 | — | — | — | 1 | 1 | 1 | 1 | 16 | 1 | 34 | 10 | 10 | 9 | 4 | — | 1 |
Swell 3 Height (m) Direction Period (s) | ENE 6 | S 14 | S 14 | S 8 | SE 8 | — | — | — | — | — | E 8 | E 8 | SE 9 | SE 9 | SSE 12 | SSE 11 | S 8 | S 14 | SE 7 | — | S 12 |
| kJ | 4 | 4 | 4 | 1 | 2 | — | — | — | — | — | 1 | 1 | 12 | 28 | 14 | 25 | 5 | 4 | 2 | — | 3 |
Wind waves Height (m) Direction Period (s) | SSW 6 | SSW 7 | — | SSW 5 | SSW 6 | S 7 | S 8 | SSE 9 | — | — | — | E 4 | E 4 | E 5 | — | — | — | — | — | E 3 | ENE 5 |
| kJ | 88 | 136 | — | 71 | 201 | 384 | 572 | 505 | — | — | — | 19 | 20 | 12 | — | — | — | — | — | 11 | 29 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 147 | 253 | 0 | 109 | 675 | 684 | 253 | 540 | 20 | 0 | 65 | 0 | 0 | 0 | 0 | 0 | 288 | 14 | 14 | 926 | 770 |
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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