
Surf Forecasts:
Waimanalo surf forecast from 1 Aug 2026:
- Most powerful swell: Saturday 1 Aug, 11PM (local time) - 8ft (2.5m), 8s period, ENE swell with 908 kJ wave energy.
Best Forecast Surf Conditions for Waimanalo this week:
The most powerful waves expected at Waimanalo in the next 16 days are 2.5m 8s and forecast to arrive on Saturday (Aug 01) at 11PM. Winds are predicted to be cross-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 | 11PM (Sat 1st Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
The Lowdown
G’day, this is Rusty. Let’s have a look at what’s on offer around Waimanalo (Hawaii). The water temp is sitting pretty close to average for this time of year, so nothing wild there.
Honestly, mate, I’ve gotta be straight with you – the whole 16-day window looks pretty grim. There’s not a single standout session in the lot. The forecast keeps pumping out steady onshore and cross-onshore winds from the ENE, and the swell is mostly short-period, wind-driven junk. The combined swell energy kicks off strong on the first Saturday at 1107, but it’s all messy and cross-on, so you’re not getting any clean lines. From there, it’s a slow slide downhill. The swell drops from 8 ft to under 5 ft by the middle of the first week, and the energy follows suit, falling into the moderate range (around 496 to 261) by Monday through Wednesday. The wind stays onshore or cross-onshore, and the wave comment is “poor surf conditions” on every single record. There’s a solid week of this, then into the second week the swell stays small – 3 ft to 5 ft – with short periods of 6 to 8 seconds, and the wind never lets up. The energy stays weak, dropping to as low as 115 by the 15th of August. No real gap, just a whole lot of nothing.
The only break in the mix is Waimanalo itself, a beginner-friendly spot that’s fairly consistent, but it’s exposed to the swell and the optimum direction is NE. The wind is blowing onshore from the ENE most of the time, so even the small waves that do roll in are chopped up and lumpy. For a beginner break, this is a write-off. If you’re a kiter, the strong cross-onshore breeze and messy surf might get you excited, but for a paddle surfer, there’s just nothing to chase.
Hang in there, though – things can change. But for now, leave the boards in the car.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon morning. Warm (max 26°C on Mon afternoon, min 25°C on Fri night). Winds decreasing (strong winds from the ENE on Fri night, moderate winds from the NE by Mon afternoon). | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Thu morning. Warm (max 26°C on Tue afternoon, min 25°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | ||||||||||||||
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 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | ENE 8 | E 6 | E 6 |
Wave Graph | |||||||||||||||||||
817 | 902 | 824 | 908 | 699 | 650 | 619 | 402 | 370 | 329 | 515 | 436 | 372 | 253 | 184 | 137 | 171 | 69 | 62 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | on | on | on | on | on | cross-on | on | on | cross-on | cross-on | on | cross-on | on | on | cross-on |
High Tide | 3:46AM0.36m | 4:44PM0.61m | 4:42AM0.37m | 4:58PM0.57m | 5:48AM0.38m | 5:09PM0.52m | 7:16AM0.41m | 5:14PM0.48m | 9:27AM0.45m | 4:57PM0.44m | 11:19AM0.53m | ||||||||
Low Tide | 10:57PM0.16m | 9:37AM0.05m | 11:22PM0.13m | 10:12AM0.11m | 11:50PM0.10m | 10:52AM0.19m | 00:22AM0.07m | 11:44AM0.27m | 1:03AM0.04m | 1:35PM0.35m | 1:59AM0.02m | 3:11AM-0.00m | |||||||
— | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | |
7:09 | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | |
mm | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 2 | — | 2 | 1 | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 21 | 20 | 21 | 22 | 21 | 22 | 22 | 23 | 25 | 23 | 26 | 27 | 27 | 28 | 28 | 28 | 29 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | E 12 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | S 12 | ENE 8 | ENE 7 |
205 | 205 | 196 | 194 | 138 | 134 | 89 | 84 | 76 | 101 | 515 | 436 | 372 | 253 | 184 | 137 | 11 | 41 | 37 | |
Swell 2 Height (m) Direction Period (s) | N 8 | SSW 14 | SSW 14 | N 10 | N 9 | N 9 | N 8 | N 8 | N 7 | SSW 12 | SSW 12 | SSW 12 | S 13 | NNE 9 | NNE 8 | NNE 8 | NNW 8 | NNW 8 | NNW 7 |
11 | 19 | 18 | 17 | 26 | 14 | 12 | 10 | 4 | 14 | 14 | 13 | 14 | 8 | 14 | 6 | 6 | 6 | 5 | |
Swell 3 Height (m) Direction Period (s) | S 12 | S 11 | N 11 | SSW 14 | SSW 14 | SW 13 | SSW 13 | S 13 | SSE 13 | SSE 13 | SSE 12 | SSE 13 | NNE 9 | S 13 | S 12 | S 12 | N 8 | S 11 | N 7 |
11 | 10 | 9 | 19 | 19 | 7 | 17 | 13 | 17 | 17 | 15 | 16 | 8 | 13 | 12 | 11 | 5 | 10 | 4 | |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | — | — | — | — | ENE 8 | E 6 | E 6 |
817 | 902 | 824 | 908 | 699 | 650 | 619 | 402 | 370 | 329 | — | — | — | — | — | — | 171 | 69 | 62 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 120 | 117 | 116 | 52 | 56 | 146 | 44 | 18 | 46 | 15 | 15 | 9 | 15 | 9 | 9 | 9 | 9 | 15 | 15 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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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.











