Surf Forecasts:
Bikini surf forecast from 30 Aug 2026:
- Best quality surf: Sunday 30 Aug, 6AM (local time) - 1.5ft (0.5m), 9s period, E swell with offshore winds.
- Most powerful swell: Sunday 6 Sep, 3AM (local time) - 10ft (3.0m), 12s period, S swell with 2,991 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 6AM (local time) - 1.5ft (0.5m), 9s period with E 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 Sunday (Aug 30) at 6AM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.1m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Bikini in the next 16 days are 3.0m 12s and forecast to arrive on Sunday (Sep 06) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Aug 30) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sun 30th Aug) | 1.5ft (0.5m) 9s |
| Best Surf | 6AM (Sun 30th Aug) | 1.5ft (0.5m) 9s |
| Most Powerful | 3AM (Sun 6th Sep) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Bikini over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s look at what’s on the table for Bikini.
Honestly, the next week plus is a tough stretch. We start with almost nothing—flat, clean but tiny, just 0.3 feet for the first couple of days. Then a weak little pulse pushes through Tuesday 1st and Wednesday 2nd September, but that’s small and messy, not worth paddling out for. The wind stays mostly cross-off or light, but the swell just isn’t there. A bit of size pops up from Friday 4th onward, but it comes with strong onshore wind and lumpy conditions—those are ugly days. By Saturday 5th, the swell jumps to 8 feet to 8 feet and the wind is howling onshore at 22 mph. It’s blown out and too big for most. Sunday 6th has a serious 10 to 12 foot swell with long 14-second periods, but again it’s onshore and messy.
Then things change. Monday 7th September is your standout. Overnight, the wind drops to glassy—zero wind—and we get a solid 10 foot swell from the SSE with a very long 16-second period. The combined energy hits 3887 (strong to very strong), and the conditions are described as excellent for experienced surfers. This is a powerful groundswell, and with that long period, it’s going to wrap beautifully around the point at Bikini, which is an exposed spot and handles that S direction well. The water temperature is around average for this time of year. Keep in mind these big, long-period swells can sometimes race past beach breaks, but being a beach and point setup, the point should offer more shape. It’s advanced territory at this size—over 8 feet—so this is for experienced crew only. Crowds are likely, given it’s a quality wave and consistency is very consistent.
Tuesday 8th still offers good waves—5 feet to 5 feet from the SSE, periods around 12-13 seconds, clean with light to moderate cross-off wind, and the energy is moderate (835). Still good for those who missed Monday. After that, the surf drops back down and gets smaller and windier through the second week, with only marginal to poor conditions. A few clean but small days around Wednesday 9th and Thursday 10th, but nothing to get excited about.
So, bottom line: the first week is mostly a write-off. Wait for that Monday 7th window—it’s the only real call of the outlook. Promising, but that far out things can shift. Keep an eye on it.
- Rusty
Short Range ForecastMostly dry. Very mild (max 16°C on Mon afternoon, min 10°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Thu night. Warm (max 20°C on Thu afternoon, min 11°C on Tue night). Winds increasing (calm on Tue night, fresh winds from the WSW by Thu night). | ||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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) | E 9 | SE 9 | SE 9 | S 6 | S 6 | S 6 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | SW 6 | S 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 38 | 3 | 3 | 1 | 1 | 1 | 65 | 82 | 89 | 71 | 73 | 73 | 55 | 81 | 92 | 66 | 68 | 133 | 621 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | off | cross-off | cross-off | cross | cross-on | on | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | on |
High Tide | 1:15AM0.19m | 8:54AM0.28m | 9:38PM0.26m | 9:32AM0.31m | 10:22PM0.25m | 3:38AM0.20m | 11:07PM0.23m | 4:37AM0.20m | 11:54PM0.21m | 5:35AM0.20m | 00:45AM0.20m | 6:34AM0.19m | 12:40PM0.37m | 1:39AM0.18m | |||||
Low Tide | 00:58AM0.19m | 4:55AM0.13m | 5:12PM0.06m | 00:56AM0.19m | 5:35AM0.15m | 5:59PM0.04m | 1:25AM0.18m | 6:14AM0.16m | 6:48PM0.02m | 6:53AM0.18m | 7:38PM0.01m | 7:32AM0.18m | 8:30PM0.01m | 3:29AM0.15m | 9:25PM0.01m | ||||
 |  | | |  | |  | | | | | | | |  |  | | | | |
 | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — |
 | 6:16 | — | 6:17 | — | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — | — | 6:21 | — | — | 6:22 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 12 | 14 | 15 | 12 | 15 | 16 | 14 | 13 | 13 | 12 | 16 | 18 | 16 | 19 | 20 | 16 | 12 | 12 | 10 |
Feels °C | 9 | 10 | 10 | 8 | 12 | 13 | 12 | 10 | 10 | 11 | 12 | 15 | 13 | 14 | 16 | 14 | 5 | 4 | 6 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | SE 9 | S 6 | ENE 9 | ENE 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | ESE 9 |
| kJ | 38 | 40 | 3 | 1 | 26 | 24 | 65 | 82 | 89 | 71 | 73 | 73 | 55 | 81 | 92 | 66 | 68 | 46 | 9 |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | S 7 | — | S 6 | S 6 | — | S 7 | S 6 | S 7 | S 6 | S 7 | S 8 | S 7 | S 7 | S 6 | S 9 | S 13 | ENE 8 |
| kJ | 3 | 3 | 1 | — | 1 | 1 | — | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 4 | 3 | 1 | 14 | 7 |
Swell 3 Height (m) Direction Period (s) | S 6 | S 7 | — | — | — | — | — | — | — | S 6 | S 7 | — | S 7 | SSW 7 | SSW 7 | S 10 | S 14 | S 13 | — |
| kJ | 1 | 1 | — | — | — | — | — | — | — | 1 | 1 | — | 1 | 5 | 5 | 2 | 4 | 13 | — |
Wind waves Height (m) Direction Period (s) | — | — | E 9 | ENE 8 | E 4 | E 4 | — | — | — | — | — | — | NW 3 | NW 4 | WNW 4 | W 4 | SW 4 | SW 6 | S 9 |
| kJ | — | — | 39 | 73 | 9 | 17 | — | — | — | — | — | — | 1 | 3 | 6 | 13 | 34 | 133 | 621 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 288 | 146 | 146 | 436 | 436 | 479 | 436 | 436 | 0 | 0 | 0 | 2 | 2 | 2 | 62 | 266 | 242 | 67 |
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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