Surf Forecasts:
Waimanalo surf forecast from 6 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 11PM (local time) - 8ft (2.4m), 8s period, ENE swell with 636 kJ wave energy.
Best Forecast Surf Conditions for Waimanalo this week:
The most powerful waves expected at Waimanalo in the next 16 days are 2.4m 8s and forecast to arrive on Sunday (Jul 12) 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 16s period and expected on Monday (Jul 06) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sun 12th Jul) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, this is Rusty. Let's take a peek at what's shaking for the next couple of weeks.
Honestly, the outlook for Waimanalo is a total downer right now. We've got a constant, strong ENE wind howling at 19-25 mph for the entire 16-day forecast period, and it's mostly blowing straight onshore or from a cross-on angle. This trashes any chance of clean, workable surf. The swell is coming from the same direction as the wind, which is a recipe for windslop on the beach. The wave energy is moderate, but the quality is all wrong. The period is short, between 6 and 8 seconds, so it's just weak, bumpy, and won't hold a line.
The first chance for a session is Monday, July 6th, but I wouldn't bother. We're looking at 7-foot of messy, onshore swell with a 7-second period and a 25 mph wind. The situation doesn't improve much over the days that follow. Tuesday and Wednesday are the same story. By the end of the first week, Thursday through Sunday, conditions are still poor, just slightly smaller, around 6-7 ft but still with that punishing onshore breeze.
Heading into the second week, from July 13th onwards, there's a slight drop in swell height, down between 4-7 ft, but the wind direction doesn't change. It's still a strong ENE onshore wind, making everything choppy. There will be periods of some clouds and even a risk of a thunderstorm on Thursday the 16th. The last few days of the forecast, up to July 21st, show the wind easing a touch to 16-19 mph but still onshore, with wave heights around 5-6 ft.
To be blunt, there are no standouts in this forecast. Not one single day offers clean conditions. Waimanalo is exposed to the ENE, so the direction of the wind and swell is hitting it square on. If you're determined to get wet, I wouldn't bother with a paddle board – with these winds and lumpy 7-second swell, a kite would be the only way to have any fun, and even then it won't be great.
The water temperature is about average for this time of year, no surprises there. If you're an absolute beginner, the smaller days (under 5 ft) on the 15th might be survivable, but the wind will make it a rocky, frustrating session. Keep an eye on the charts, things can change, but right now, this looks like a blank run that's pretty normal for this stretch.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue morning. Warm (max 25°C on Mon afternoon, min 24°C on Sun night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Thu night. Warm (max 25°C on Thu morning, min 24°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||
Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sun 12 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | NE 8 | NE 8 | NE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 366 | 542 | 546 | 468 | 560 | 480 | 516 | 428 | 444 | 344 | 405 | 310 | 384 | 397 | 475 | 531 | 387 | 366 | 416 | 463 | 489 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on | on | on | on |
High Tide | 7:34AM0.29m | 6:34PM0.50m | 10:04AM0.36m | 6:48PM0.45m | 11:36AM0.46m | 6:52PM0.41m | 12:27PM0.56m | 1:10PM0.65m | 1:52PM0.71m | 10:48PM0.30m | 2:34PM0.75m | ||||||||||
Low Tide | 1:44AM0.11m | 11:39AM0.20m | 2:21AM0.07m | 1:09PM0.29m | 3:04AM0.02m | 4:21PM0.34m | 3:52AM-0.03m | 4:44AM-0.07m | 5:35AM-0.11m | 9:11PM0.25m | 6:26AM-0.14m | ||||||||||
 |  | | |  | | | | | | | |  |  | | | | |  | | | |
 | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — |
 | 7:16 | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | 1 | — | — | 2 | 1 | — | — | — | — |
Temp °C | 24 | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 25 |
Feels °C | 21 | 20 | 21 | 20 | 19 | 20 | 20 | 21 | 22 | 20 | 22 | 22 | 24 | 24 | 23 | 22 | 22 | 23 | 21 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | SSW 18 | SW 18 | SW 16 | SW 16 |
| kJ | 86 | 84 | 76 | 71 | 70 | 66 | 63 | 36 | 35 | 34 | 27 | 27 | 11 | 11 | 12 | 11 | 11 | 30 | 48 | 41 | 64 |
Swell 2 Height (m) Direction Period (s) | NW 10 | SE 9 | SE 9 | S 18 | N 9 | S 10 | S 10 | S 18 | S 8 | S 8 | S 16 | S 16 | S 15 | SW 21 | SW 21 | SSW 19 | SSW 19 | S 12 | S 13 | S 13 | S 12 |
| kJ | 4 | 3 | 3 | 6 | 2 | 2 | 2 | 6 | 1 | 1 | 5 | 5 | 4 | 18 | 17 | 37 | 34 | 11 | 13 | 13 | 11 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | NW 10 | NW 10 | NW 9 | NW 9 | N 9 | — | W 18 | S 18 | — | S 16 | S 8 | S 23 | S 8 | S 8 | S 15 | S 9 | SE 8 | W 13 | S 6 | SE 6 |
| kJ | 17 | 4 | 4 | 3 | 3 | 2 | — | 6 | 6 | — | 21 | 1 | 10 | 1 | 1 | 4 | 1 | 3 | 3 | 1 | 2 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | NE 8 | NE 8 | NE 8 |
| kJ | 366 | 542 | 546 | 468 | 560 | 480 | 516 | 428 | 444 | 344 | 405 | 310 | 384 | 397 | 475 | 531 | 387 | 366 | 416 | 463 | 489 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 52 | 116 | 117 | 44 | 116 | 116 | 50 | 50 | 52 | 50 | 50 | 50 | 44 | 44 | 50 | 44 | 55 | 57 | 44 | 50 | 50 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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