
Surf Forecasts:
Waimanalo surf forecast from 3 Aug 2026:
- Most powerful swell: Tuesday 4 Aug, 5AM (local time) - 5ft (1.6m), 12s period, ENE swell with 689 kJ wave energy.
Best Forecast Surf Conditions for Waimanalo this week:
The most powerful waves expected at Waimanalo in the next 16 days are 1.6m 12s and forecast to arrive on Tuesday (Aug 04) at 5AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 12s period and expected on Thursday (Aug 06) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Tue 4th Aug) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what’s coming up for the Waimanalo zone. I gotta be straight with you – this is one of those outlooks where I wish I had better news. The whole 16-day window is pretty much a write-off for decent surfing, so we’re looking at a blank run that stretches from now right through to mid-August with no real standouts.
Waimanalo’s an exposed beach break that really wants that NE swell, and we’ve got that direction alright, with swell heights mostly hanging around the 4 ft to 6 ft range. But the problem is the wind. It’s blowing from the ENE at 15 to 25 mph almost the whole time – mostly onshore or cross-onshore. That’s a moderate to strong breeze that’s going to have things choppy, lumpy, and messy. The swell period is short too, mostly 6 to 8 seconds, so the waves will lack any real push or shape. The combined swell energy values (between 122 and 629) are moderate to strong in numeric terms, but with that wind and short period, it’s just not translating to anything rideable.
The water temp is sitting at 80°, which is about 0.9° above the long-term average – nothing unusual for this time of year.
Honestly, every single one of those morning and afternoon slots is flagged as poor surf conditions. There’s not a single day where that changes. For the first week, from Monday 3 August right through to Sunday 10 August, you’ve got onshore wind, cross-onshore wind, and even the risk of thunderstorms on the Sunday and Monday. The wave comment just keeps repeating “poor surf conditions.” The second week is more of the same – 11 August to 18 August – still that same ENE wind cranking, still those short-period swells, still poor.
If you’re desperate for something, the swell does bump up a bit around Monday 17 August with a 7 ft ENE swell and combined energy hitting 629, but that’s blowing 25 mph onshore. That’s not paddle surfing – that’s a kite-surfing setup or just a day to stay on the sand.
There are zero standouts here. No hidden gem days. No clean window. This is one of those stretches where it just doesn’t stay poor for long, and forecasts can change, but the pattern looks locked in. The lack of any consistent clean options is fairly normal for this area when the trade winds lock in like this.
Keep an eye on it, but don’t hold your breath.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Mon morning, min 25°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Thu morning. Warm (max 25°C on Thu morning, min 25°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | |||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 6 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | |||||||||||||||||||||
330 | 331 | 290 | 608 | 436 | 469 | 312 | 188 | 88 | 59 | 172 | 40 | 111 | 98 | 218 | 270 | 293 | 366 | 376 | 387 | 365 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | cross-on | on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on |
High Tide | 5:09PM0.52m | 7:16AM0.41m | 5:14PM0.48m | 9:27AM0.45m | 4:57PM0.44m | 11:19AM0.53m | 12:18PM0.61m | 1:01PM0.68m | 1:40PM0.72m | 11:41PM0.30m | |||||||||||
Low Tide | 10:52AM0.19m | 00:22AM0.07m | 11:44AM0.27m | 1:03AM0.04m | 1:35PM0.35m | 1:59AM0.02m | 3:11AM-0.00m | 4:25AM-0.03m | 5:29AM-0.07m | 8:45PM0.24m | |||||||||||
6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | |
— | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | 1 | 2 | 2 | 2 |
Temp °C | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 25 | 25 | 28 | 27 | 26 | 26 | 27 | 25 | 25 | 24 | 25 | 23 | 23 | 24 | 23 | 22 | 23 | 24 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | N 6 | E 12 | E 12 | ENE 11 | SSW 12 | S 13 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | NNW 8 | ENE 8 | NNW 7 | NNW 7 | NE 11 | NE 10 | NE 10 | SSW 13 | SSW 13 | S 18 | S 16 |
24 | 76 | 101 | 608 | 13 | 14 | 312 | 188 | 88 | 59 | 12 | 37 | 10 | 10 | 30 | 27 | 16 | 17 | 17 | 24 | 43 | |
Swell 2 Height (m) Direction Period (s) | E 13 | N 7 | SSW 12 | SSW 12 | S 13 | NNE 9 | NNE 9 | NNE 8 | S 12 | NNW 8 | S 11 | NNW 7 | NE 10 | ENE 12 | N 7 | N 7 | SSW 14 | SSW 18 | S 17 | SSW 13 | SSE 10 |
84 | 4 | 14 | 14 | 13 | 8 | 8 | 7 | 11 | 13 | 10 | 11 | 14 | 14 | 8 | 3 | 19 | 30 | 24 | 16 | 9 | |
Swell 3 Height (m) Direction Period (s) | N 8 | SSW 12 | N 7 | SSE 12 | N 10 | SSW 11 | S 13 | S 12 | NNE 8 | S 12 | N 7 | ENE 10 | S 11 | S 11 | S 11 | SSW 14 | N 6 | S 10 | SSE 10 | SSE 10 | SSW 12 |
10 | 15 | 4 | 15 | 8 | 12 | 13 | 12 | 6 | 11 | 1 | 10 | 9 | 9 | 9 | 20 | 3 | 8 | 9 | 9 | 14 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | — | ENE 11 | ENE 10 | — | — | ENE 5 | ENE 5 | ENE 8 | ENE 5 | ENE 7 | ENE 6 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
330 | 331 | 290 | — | 436 | 469 | — | — | 34 | 58 | 172 | 40 | 111 | 98 | 218 | 270 | 293 | 366 | 376 | 387 | 365 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 17 | 15 | 15 | 9 | 15 | 44 | 15 | 15 | 44 | 44 | 15 | 44 | 44 | 44 | 50 | 52 | 44 | 44 | 45 | 44 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
Information about the Waimanalo Surf forecast
The above surf forecast table for Waimanalo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Waimanalo can be found by selecting the local surf guide option on the grey menu. Our Waimanalo 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 (Waimanalo) 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 Waimanalo 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.
Waimanalo is 7 km (4 miles) from Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.











