Surf Forecasts:
Bikini surf forecast from 14 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 12PM (local time) - 4.5ft (1.3m), 10s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 6PM (local time) - 4.5ft (1.4m), 10s period, SSE swell with 373 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 9PM (local time) - 2ft (0.6m), 9s 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 Monday (Sep 14) at 9PM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.6m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Bikini in the next 16 days are 1.4m 10s and forecast to arrive on Wednesday (Sep 16) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Saturday (Sep 19) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 14th Sep) | 2ft (0.6m) 9s |
| Best Surf | 12PM (Wed 16th Sep) | 4.5ft (1.3m) 10s |
| Most Powerful | 6PM (Wed 16th Sep) | 4.5ft (1.4m) 10s |
Table - best surf conditions forecast for Bikini over the next 16 days.
The Lowdown
Rusty here again. Let’s run through the same forecast but in feet and degrees Fahrenheit so you can feel it.
The start of the period is flat as a lake. Nothing worth paddling for until Wednesday, September 16th. That’s a four-day gap of junk.
Wednesday morning on the 16th brings a south swell around 4ft, but cross-onshore wind kills the vibe. The afternoon saves it. Wind swings light and cross-offshore, that 4ft from the SSE with a nice 10-second period, combined energy at 347 (moderate). That’s the best window in the first week right there at Bikini (Marshall Islands) – glassy, clean, and with enough push. Water sits at about 55°F, which is a touch warmer than normal for the time of year.
Thursday 17th still has a 3ft SSE swell with gentle offshore and clean conditions in the morning, but it’s just okay.
Friday 18th through Tuesday 22nd is a big patch of nearly nothing. Small waves, choppy, or onshore winds ruin the fun. Sunday 20th gives a brief 3ft east swell with offshore wind in the morning but at 8 seconds and weak energy (128), it’s a pass.
Monday September 28th is your second-week dark horse. A solid 4ft SSE swell with 9-second period and light offshore winds in the morning. Combined energy is a respectable 256, so those waves will have some shape and drive. This is a promising but long-range call. The south direction matches Bikini’s optimum S swell.
Tuesday 29th brings more size at 5ft from the S, but it’s cross-onshore, choppy, and for experts only. Not worth the paddle unless you’re charging.
Bottom line: chase Wednesday afternoon, September 16th and Monday morning, September 28th. That’s your couple of good days.
Rusty.
Short Range ForecastMostly dry. Very mild (max 12°C on Tue morning, min 6°C on Tue night). Winds increasing (calm on Mon afternoon, fresh winds from the WSW by Tue morning). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Sat afternoon, min 9°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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) | S 10 | S 10 | S 9 | ESE 8 | SW 5 | S 6 | S 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | S 12 | S 11 | S 10 | S 10 | E 8 | E 8 | E 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 98 | 94 | 63 | 21 | 65 | 166 | 340 | 342 | 258 | 149 | 119 | 65 | 25 | 15 | 11 | 9 | 8 | 7 | 117 | 113 | 277 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | cross | on | cross-on | cross-on | cross-off | off | off | cross-off | off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off |
High Tide | 9:41AM0.34m | 10:31PM0.24m | 3:17AM0.19m | 11:16PM0.22m | 4:11AM0.19m | 00:02AM0.20m | 5:02AM0.19m | 00:52AM0.19m | 5:52AM0.19m | 12:31PM0.30m | 1:52AM0.18m | 6:39AM0.19m | 1:15PM0.28m | 7:21AM0.19m | 2:05PM0.27m | ||||||
Low Tide | 6:04PM0.01m | 6:10AM0.15m | 6:51PM0.02m | 6:50AM0.16m | 7:37PM0.03m | 7:27AM0.17m | 8:22PM0.05m | 3:11AM0.17m | 9:07PM0.06m | 3:29AM0.17m | 9:55PM0.08m | 9:17AM0.19m | 10:45PM0.09m | ||||||||
 | |  |  | |  | | | | | | | | | | | |  |  | | | |
 | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — |
 | — | 6:29 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:32 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 11 | 10 | 12 | 10 | 8 | 9 | 11 | 9 | 15 | 17 | 16 | 16 | 17 | 15 | 18 | 20 | 16 | 18 | 18 | 16 |
Feels °C | 8 | 9 | 8 | 5 | 3 | 1 | 6 | 7 | 4 | 12 | 15 | 13 | 13 | 13 | 12 | 16 | 18 | 14 | 17 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | ESE 7 | ESE 7 | S 9 | ESE 8 | ESE 7 | E 7 | S 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | SSE 9 | S 12 | ENE 6 | S 10 | S 10 | E 8 | E 8 | E 11 |
| kJ | 69 | 52 | 63 | 19 | 10 | 4 | 340 | 342 | 258 | 149 | 119 | 65 | 25 | 15 | 11 | 33 | 8 | 7 | 117 | 113 | 277 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | E 7 | S 9 | E 9 | SSE 13 | E 8 | E 8 | E 12 | E 8 | E 8 | E 8 | SE 8 | SE 8 | S 8 | S 11 | SE 7 | S 7 | S 9 | S 10 | S 9 |
| kJ | 98 | 94 | 39 | 14 | 6 | 17 | 5 | 5 | 3 | 1 | 1 | 1 | 10 | 10 | 5 | 9 | 2 | 1 | 6 | 7 | 6 |
Swell 3 Height (m) Direction Period (s) | — | ENE 8 | E 9 | ENE 7 | ENE 6 | E 9 | — | — | E 13 | E 12 | E 12 | E 12 | ENE 4 | S 13 | SE 7 | E 10 | S 8 | — | S 8 | S 6 | S 12 |
| kJ | — | 7 | 2 | 11 | 4 | 6 | — | — | 3 | 3 | 3 | 3 | 1 | 13 | 2 | 2 | 1 | — | 5 | 1 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | W 4 | SW 5 | S 6 | — | — | NE 4 | NNE 4 | ENE 4 | ENE 4 | — | E 3 | ENE 5 | ENE 6 | E 5 | ENE 6 | — | — | — |
| kJ | — | — | — | 21 | 65 | 166 | — | — | 12 | 7 | 1 | 11 | — | 8 | 24 | 51 | 37 | 104 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 62 | 675 | 253 | 242 | 0 | 0 | 0 | 0 | 0 | 14 | 103 | 89 | 926 | 926 | 146 | 0 | 436 | 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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