Surf Forecasts:
Waikiki surf forecast from 17 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 6AM (local time) - 2ft (0.6m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 9AM (local time) - 3.5ft (1.0m), 13s period, SE swell with 347 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 6AM (local time) - 2ft (0.6m), 9s period with E swell.
Best Forecast Surf Conditions for Waikiki this week:
The surf forecast for Waikiki over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 6AM. The primary swell is predicted to be 0.6m and 9s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Waikiki in the next 16 days are 1.0m 13s and forecast to arrive on Monday (Aug 24) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 10s period and expected on Saturday (Aug 22) at 12PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 18th Aug) | 2ft (0.6m) 9s |
| Best Surf | 6AM (Tue 18th Aug) | 2ft (0.6m) 9s |
| Most Powerful | 9AM (Mon 24th Aug) | 3.5ft (1.0m) 13s |
Table - best surf conditions forecast for Waikiki over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s in store for Waikiki over the next couple of weeks.
Right off the bat, I gotta be straight with you – the next week and a half is a tough one. We're looking at a long, frustrating stretch of tiny, weak surf with poor conditions. From Monday the 17th right through to Saturday the 29th, there's just nothing worth getting wet for. The energy is low, the wind is mostly cross or cross-off, and the swell is barely a ripple. You’ll see a combined energy reading of barely 106 (moderate energy) on the 17th morning, but that drops to single digits and zeros for days on end. It’s a blank run, plain and simple. For an exposed spot like Waikiki, this is one of those quiet spells that happens. It won’t stay this way forever, but for now, leave the board in the car.
Now, hang in there, because there is a bit of light at the end of the tunnel. The first real glimmer we get is on Sunday the 30th. That morning, the wind goes light from the WNW, a clean cross-off, and a nice little pulse of SE swell rolls in. The morning shows waves around 3ft from the SE with a period of 11 seconds, and the combined energy jumps to a much healthier 206 (moderate energy). But the standout is Sunday afternoon – the wind goes glassy, and the swell bumps up to a clean 3ft from the SE, with a period of 12 seconds and the energy climbing to 348 (moderate energy). That’s the pick of the whole forecast. For a spot like Waikiki, that’s a tasty, clean day with proper little waves. The SE direction isn’t the absolute optimum (the guide says NE is best), but with glassy conditions and a solid groundswell, it’s gonna be fun. Keep in mind, the period over 11 seconds means the sets will have a bit of punch, but it’s still very manageable. Crowds are possible here, so get out early.
Monday the 31st still has some SE swell around 3ft with a 12-second period, but the wind goes cross from the NW, which introduces a little chop. It’s still surfable, but it’s not as clean as Sunday. The energy is still decent at 277 (moderate energy) in the morning.
After that, we’re back to small, messy conditions into early September. So if you can, make your move on Sunday the 30th. That’s the day.
The water at Waikiki is sitting at 50°F with an anomaly of 3°F, so it’s a touch warmer than usual for this time of year – not a dramatic change, but you’ll notice you don’t need the thickest wetsuit.
Rusty out.
Short Range ForecastMostly dry. Very mild (max 15°C on Wed afternoon, min 7°C on Mon night). Winds decreasing (fresh winds from the SSW on Mon morning, light winds from the NE by Tue afternoon). | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Very mild (max 13°C on Thu morning, min 5°C on Fri night). Mainly strong winds. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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 9 | E 9 | E 9 | E 10 | E 10 | E 9 | E 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 | E 8 | E 8 | E 8 | NE 8 | S 10 | S 10 | E 10 | SSE 10 |
Wave Graph | |||||||||||||||||||||
106 | 109 | 85 | 65 | 46 | 26 | 25 | 15 | 14 | 14 | 14 | 7 | 17 | 5 | 5 | 1 | 3 | 0 | 0 | 2 | 0 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off | cross-off |
High Tide | 10:44AM1.16m | 10:58PM1.51m | 11:30AM1.21m | 11:52PM1.35m | 12:17PM1.25m | 00:50AM1.21m | 1:06PM1.27m | 1:56AM1.08m | 1:56PM1.29m | 3:08AM1.00m | 2:50PM1.31m | 4:18AM0.95m | 3:45PM1.33m | ||||||||
Low Tide | 5:13PM0.50m | 6:13AM0.43m | 6:06PM0.51m | 6:44AM0.54m | 7:01PM0.52m | 7:10AM0.63m | 7:59PM0.52m | 7:33AM0.70m | 9:03PM0.53m | 7:58AM0.75m | 10:15PM0.52m | 8:34AM0.78m | 11:25PM0.50m | ||||||||
7:33 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:24 | — | — | |
— | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 9 | 9 | 7 | 8 | 9 | 9 | 11 | 15 | 13 | 13 | 10 | 7 | 7 | 8 | 7 | 8 | 9 | 8 | 7 | 7 | 6 |
Feels °C | 3 | 2 | 1 | 5 | 6 | 5 | 7 | 12 | 8 | 9 | 3 | -3 | -1 | 1 | 0 | 0 | 0 | 0 | -4 | -1 | 1 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | S 7 | S 7 | E 9 | S 7 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | S 11 | S 9 | NE 8 | S 11 | — | E 10 | SSE 10 |
106 | 109 | 85 | 49 | 46 | 26 | 17 | 15 | 14 | 14 | 14 | 7 | 5 | 5 | 755 | 656 | 3 | 890 | — | 2 | 810 | |
Swell 2 Height (m) Direction Period (s) | S 8 | — | S 9 | E 10 | E 10 | SSE 8 | E 9 | SSE 8 | SSE 7 | SSE 7 | SE 12 | SE 12 | NE 8 | — | E 8 | E 8 | — | — | — | — | — |
1 | — | 1 | 65 | 46 | 22 | 25 | 11 | 11 | 5 | 6 | 6 | 17 | — | 5 | 1 | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | S 7 | SSE 7 | S 8 | SSW 7 | SSW 7 | SSW 7 | SSW 6 | S 6 | — | SE 12 | — | — | — | — | — | — | — | — | — |
— | — | 1 | 31 | 42 | 16 | 9 | 9 | 4 | 1 | — | 6 | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSW 5 | S 5 | S 5 | — | — | — | NW 2 | — | NNW 2 | — | SSW 3 | SSE 7 | SSE 7 | S 11 | S 11 | WNW 3 | S 10 | S 10 | S 10 | S 10 | — |
35 | 47 | 29 | — | — | — | 1 | — | 1 | — | 4 | 240 | 327 | 862 | 1165 | 2 | 1007 | 1247 | 890 | 786 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 115 | 861 | 115 | 0 | 8 | 1 | 1 | 1 | 3 | 1203 | 832 | 580 | 115 | 1359 | 7 | 187 | 187 | 7 | 187 | 1357 | 7 |
Best forecast wave conditions in Provincia de Buenos Aires | |||||||||||||||||||||
Best forecast wave conditions in Argentina | |||||||||||||||||||||
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Information about the Waikiki Surf forecast
The above surf forecast table for Waikiki provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waikiki can be found by selecting the local surf guide option on the grey menu. Our Waikiki 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 (Waikiki) 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 Waikiki 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.
Are you planning a holiday in Provincia de Buenos Aires? If you are looking for accommodation near Waikiki, camping, hotels and holiday cottages in Provincia de Buenos Aires, consider staying in Mar del Plata which is 10 km (6 miles) away.











