Surf Forecasts:
Waimanalo surf forecast from 30 Jul 2026:
- Most powerful swell: Saturday 1 Aug, 11PM (local time) - 8ft (2.5m), 8s period, ENE swell with 910 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 0.4m 14s period and expected on Thursday (Jul 30) at 8AM.
| 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
Alright, Rusty here. Let's talk about what's coming up for Waimanalo.
Right off the bat, I gotta be straight with you – the next week and a half is a write-off. We're looking at a solid 10 to 11 days of nothing but frustration. The trade winds are howling out of the ENE, mostly 15 to 25 mph, and they're just ruining everything. The surf size is actually there, with waves pushing 5ft to 8ft, and the combined wave energy gets up into the strong range, but it's all messy, cross-onshore junk. The period is short, around 7 to 8 seconds, so it's just weak, wind-blown slop. The water temp is about what you'd expect for this time of year, so no surprises there.
Honestly, from Thursday the 30th of July through to Monday the 10th of August, don't even bother. It's all marked as 'poor surf conditions'. This stretch is a classic wind-affected grind, and with a swell that's over 8ft at times combined with that strong breeze, it's really only for the experts if they're desperate, and even then, it's not gonna be fun. For the rest of us, it's more of a kite surfing sort of setup than a paddle day.
Now, hold on, because there is a little glimmer of hope. On Tuesday the 11th of August, we finally get a break in the wind. That morning, the wind swings around to a light SSE breeze at just 6 mph, going cross-offshore. The swell drops back to a clean 4ft from the ENE. The period is still short at 7 seconds, but that light, clean wind is a major positive. The forecast says "expect good surf conditions" and the wave description is "clean". That's the standout window in this whole 16-day forecast. It's not a massive swell, but it'll be rideable and, most importantly, not chopped up. The afternoon sees the wind go light cross-shore, which is still a decent option, but the morning is the call.
So, to sum it up: the first 11 days are a total bust. The only real chance to get a clean wave is Tuesday morning, the 11th of August. It's a long way out, so keep an eye on it, but right now, that's your best bet.
Signing off,
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Thu afternoon, min 24°C on Fri night). Winds increasing (light winds from the E on Wed night, strong winds from the ENE by Fri night). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Tue afternoon, min 24°C on Sat night). Winds decreasing (strong winds from the ENE on Sat night, light winds from the ENE by Tue morning). | ||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | ||||||||||||||
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 | E 7 | E 7 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 12 | ENE 11 | ENE 10 |
Wave Graph  | |||||||||||||||||||
 kJ | 176 | 276 | 234 | 298 | 397 | 447 | 736 | 850 | 807 | 889 | 801 | 699 | 574 | 404 | 370 | 295 | 583 | 515 | 388 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on | on | on | on | cross-on |
High Tide | 2:12AM0.34m | 4:07PM0.66m | 2:57AM0.35m | 4:27PM0.64m | 3:46AM0.36m | 4:44PM0.61m | 4:42AM0.37m | 4:58PM0.57m | 5:48AM0.38m | 5:09PM0.52m | 7:16AM0.41m | 5:14PM0.48m | |||||||
Low Tide | 10:06PM0.20m | 8:32AM-0.04m | 10:31PM0.18m | 9:04AM-0.01m | 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 | ||||||
 |  | | | | |  | | | | | | |  | | | |  |  | |
 | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — |
 | 7:10 | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 29 | 28 | 27 | 26 | 24 | 23 | 22 | 20 | 21 | 21 | 22 | 21 | 22 | 24 | 23 | 23 | 26 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | S 13 | S 13 | E 16 | E 15 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | ENE 12 | E 12 | E 12 | ENE 12 | ENE 11 | ENE 10 |
| kJ | 176 | 56 | 55 | 81 | 157 | 231 | 205 | 205 | 196 | 194 | 188 | 136 | 87 | 52 | 113 | 144 | 583 | 515 | 388 |
Swell 2 Height (m) Direction Period (s) | NNE 7 | SW 18 | N 9 | S 13 | N 9 | N 8 | N 8 | SSW 14 | N 11 | N 10 | N 9 | N 9 | N 8 | N 7 | SSE 13 | N 6 | ENE 15 | NNE 10 | NNE 9 |
| kJ | 82 | 12 | 7 | 53 | 13 | 12 | 11 | 19 | 9 | 17 | 15 | 14 | 12 | 4 | 17 | 11 | 21 | 10 | 8 |
Swell 3 Height (m) Direction Period (s) | S 14 | E 19 | E 18 | N 9 | S 12 | S 12 | S 12 | S 11 | SSW 14 | SSW 14 | SSW 14 | SW 13 | SSW 13 | S 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | S 13 |
| kJ | 62 | 29 | 24 | 25 | 27 | 26 | 11 | 10 | 18 | 19 | 19 | 7 | 17 | 13 | 15 | 14 | 14 | 13 | 14 |
Wind waves Height (m) Direction Period (s) | — | ENE 8 | ENE 8 | E 7 | E 7 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | — | — | — |
| kJ | — | 276 | 234 | 298 | 397 | 447 | 736 | 850 | 807 | 889 | 801 | 699 | 574 | 404 | 370 | 295 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 9 | 44 | 44 | 44 | 50 | 61 | 116 | 117 | 57 | 118 | 52 | 52 | 46 | 50 | 46 | 15 | 15 | 15 | 15 |
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
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Waimanalo surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest