Surf Forecasts:
Bikini surf forecast from 16 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 9AM (local time) - 2.5ft (0.8m), 6s period, S swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 12PM (local time) - 8ft (2.5m), 12s period, SSW swell with 1,757 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 9AM (local time) - 2.5ft (0.8m), 6s 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 9AM. The primary swell is predicted to be 0.8m and 6s period. 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 2.5m 12s and forecast to arrive on Sunday (Aug 23) at 12PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Thursday (Aug 20) at 3PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Wed 19th Aug) | 2.5ft (0.8m) 6s |
| Best Surf | 9AM (Wed 19th Aug) | 2.5ft (0.8m) 6s |
| Most Powerful | 12PM (Sun 23rd Aug) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Bikini over the next 16 days.
The Lowdown
Alright folks, Rusty here, locking in on what’s happening for your local stretch, Bikini. It’s a beach and point set-up, pretty exposed, and it needs a solid southerly pulse to light up. We’ve got a decent run ahead, but we gotta wade through some messy weather first.
The pattern starts off frustrating. Sunday the 16th looks okay on paper with a 4ft easterly swell, but the wind is light offshore early, so there’s a brief clean window. That said, the combined wave energy is moderate (241), and the swell period is short at 8 seconds, so it won’t have much punch. Still, it’s the first rideable option. By afternoon, the wind swings and things fall apart.
Monday the 17th through Wednesday the 19th is a write-off. The wind is mostly cross-onshore, the rain is heavy, and the swell is small and weak. Energy readings drop into the double digits for a couple of days (50, 40, 23). The best you can say is Wednesday morning is clean with a tiny 3ft southerly, but it’s weak.
We get a brief tease Thursday afternoon (20th August) – a 4ft easterly swell with light offshore wind and clean conditions. Energy is back up to moderate (103), but again, short period. It’s surfable, but not memorable.
Then we hit a big, windy, messy zone. Friday the 21st through Sunday the 23rd sees strong onshore and cross-onshore winds, with solid swell (6ft to 8ft) but terrible conditions. The energy gets strong (700, 937, even up to 1728 on the 23rd), but it’s blown out junk. That’s kite-surfing territory, not paddling.
Here’s the standout. Monday the 24th is just okay (marginal), but Tuesday the 25th is where it’s at. The morning is clean, with a 6ft SSE groundswell. The period jumps to 13 seconds – that’s a proper long-period swell with real push. The combined energy is high (983). The wind is a light offshore (ENE) breeze. For a spot that likes S to SSE swell, this is lining up well. It’s going to be clean, powerful, and with that longer period, the sets will be spaced out, making paddling out easier. This is the best session on offer. The water temp is about 53°F, which is about normal for this time of year, so no major surprises there. Just be aware Bikini is often crowded, so expect company.
Wednesday the 26th and Thursday the 27th are still rideable as the swell drops, with clean conditions and offshore winds, but the energy fades fast (405 down to 138). By the end of the month (the 29th onward) it gets tiny and weak again – ankle-biters with no power. There’s a long gap of small, poor surf from the 29th through to the 31st, so don’t hold your breath for that last week.
In short, don’t waste your energy on the first week’s junk. Point the van at Tuesday the 25th morning on the incoming tide for the best, cleanest, most powerful waves we’ll see in this stretch.
Rusty.
Short Range ForecastHeavy rain (total 68mm), heaviest during Mon afternoon. Very mild (max 17°C on Sun morning, min 7°C on Tue night). Winds increasing (light winds from the NNW on Sun morning, fresh winds from the SSE by Mon afternoon). | Days 4-6 Weather SummaryHeavy rain (total 31mm), heaviest during Thu morning. Very mild (max 14°C on Thu afternoon, min 7°C on Fri night). Winds increasing (light winds from the NE on Thu afternoon, strong winds from the SW by Fri afternoon). | ||||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||
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) | E 8 | E 8 | E 9 | E 10 | E 9 | SSE 6 | SSE 6 | SSE 6 | S 6 | S 6 | S 7 | S 8 | SSE 8 | E 6 | SSW 5 | SW 6 | SW 7 | SSW 9 | S 12 | S 11 | S 11 |
Wave Graph | |||||||||||||||||||||
213 | 167 | 160 | 167 | 85 | 134 | 124 | 115 | 74 | 42 | 33 | 28 | 19 | 80 | 80 | 209 | 696 | 666 | 855 | 441 | 418 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross-off | cross-off | off | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 5:52AM0.19m | 1:20PM0.30m | 2:50AM0.18m | 6:45AM0.19m | 2:12PM0.29m | 7:42AM0.19m | 3:08PM0.28m | |||||
Low Tide | 6:28PM0.02m | 6:44AM0.12m | 7:19PM0.02m | 7:26AM0.14m | 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 | ||||||||
7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | |
— | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:12 | — | |
mm | 1 | 3 | 6 | 5 | 28 | 23 | 2 | — | — | — | — | 7 | 14 | 3 | 7 | — | — | — | — | — | — |
Temp °C | 17 | 16 | 14 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 10 | 11 | 12 | 14 | 12 | 10 | 9 | 8 | 9 | 10 | 9 |
Feels °C | 17 | 16 | 12 | 6 | 6 | 6 | 3 | 4 | 5 | 6 | 7 | 7 | 7 | 9 | 7 | 3 | -1 | 1 | 0 | 0 | 0 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 9 | E 10 | E 9 | E 10 | ENE 9 | ENE 9 | S 6 | S 6 | S 7 | S 8 | SSE 8 | E 6 | E 7 | ENE 8 | ENE 8 | E 8 | S 12 | S 11 | S 11 |
213 | 167 | 160 | 167 | 85 | 49 | 28 | 16 | 74 | 42 | 33 | 28 | 19 | 80 | 48 | 22 | 13 | 1 | 855 | 441 | 418 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSE 9 | S 8 | — | — | — | — | S 11 | ENE 9 | ENE 9 | ENE 9 | SE 13 | — | SSE 7 | SE 12 | S 16 | S 14 | — | — | — | E 9 |
28 | 16 | 5 | — | — | — | — | 3 | 15 | 15 | 15 | 7 | — | 18 | 6 | 5 | 4 | — | — | — | 2 | |
Swell 3 Height (m) Direction Period (s) | — | — | S 11 | — | — | — | — | — | — | SE 14 | SE 14 | S 7 | SSW 6 | SSE 5 | SE 12 | — | — | — | — | — | — |
— | — | 2 | — | — | — | — | — | — | 8 | 7 | 1 | 4 | 5 | 6 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | SSE 4 | SSE 5 | SSE 6 | SSE 6 | SSE 6 | ESE 6 | ESE 5 | E 5 | E 4 | E 5 | ENE 6 | SSW 5 | SW 6 | SW 7 | SSW 9 | WSW 5 | WSW 6 | W 5 |
— | — | — | 35 | 46 | 134 | 124 | 115 | 25 | 27 | 20 | 24 | 52 | 159 | 80 | 209 | 696 | 666 | 82 | 204 | 99 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 14 | 109 | 253 | 675 | 540 | 390 | 539 | 150 | 0 | 103 | 103 | 926 | 0 | 643 | 907 | 675 | 109 | 21 | 109 | 643 |
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.











