Surf Forecasts:
Waimanalo surf forecast from 23 Jul 2026:
- Most powerful swell: Monday 27 Jul, 8PM (local time) - 6.5ft (2.0m), 13s period, ENE swell with 1,401 kJ wave energy.
Best Forecast Surf Conditions for Waimanalo this week:
The most powerful waves expected at Waimanalo in the next 16 days are 2.0m 13s and forecast to arrive on Monday (Jul 27) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 16s period and expected on Sunday (Jul 26) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Mon 27th Jul) | 6.5ft (2.0m) 13s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about what’s on offer for the next couple of weeks.
First up, we’re looking at a pretty long stretch of nothing good. We’ve got a solid gap from now until Thursday, the 30th of July, with no real surf to get excited about. The wind is just hammering it from the ENE, mostly onshore or cross-onshore, blowing 15 to 25 mph, which is ruining everything. The swell is there, running 6 to 7 ft at times, but the period is short – around 7 to 8 seconds – and that wind is making it lumpy, choppy, and just plain ugly. The combined wave energy is moderate to strong (405 to 847), but it’s not doing us any favours. This is a beach break setup, and with that combo, it’s looking more interesting for kite surfing than paddle surfing, to be honest.
The first real glimmer of hope comes on Thursday morning, the 30th of July. Things ease off. The wind swings to the SE, dropping to a light breeze at 6 mph, and it goes cross-shore. That’s a major positive. The swell drops to 4 ft from the ENE, with a period of 9 seconds, and the combined energy is weak (294). It’s a marginal surf forecast, but that light wind will make it clean, with just small crossing wind ripples. That’s the best we’ll see for a while.
The rest of the run is a write-off. Friday the 31st, the wind picks right back up to a fresh breeze, cross-onshore, and the surf quality is poor. Saturday the 1st of August and Sunday the 2nd are back to strong breezes and onshore wind, with 6 to 7 ft of short-period junk. Then Monday the 3rd and Tuesday the 4th, we get a long-period groundswell coming in – 15 to 16 seconds – but it’s only 3 ft, and the wind is still onshore or cross-onshore, ruining any chance of a clean wave. The combined energy is moderate (942 to 683), but the wind is the killer. The water temperature is about average for the time of year, nothing unusual.
So, if you’re desperate, aim for Thursday morning, the 30th of July. It’s the only window where the wind gives you a break. The rest of the 16 days is a waiting game.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu morning. Warm (max 25°C on Wed night, min 24°C on Fri morning). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sat night. Warm (max 26°C on Tue afternoon, min 24°C on Sat night). Mainly fresh winds. | ||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | ||||||||||||||
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 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | E 14 | E 14 | E 14 | E 14 | E 13 | ENE 13 | ENE 12 | E 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 203 | 395 | 317 | 332 | 459 | 408 | 498 | 493 | 461 | 517 | 372 | 362 | 485 | 522 | 515 | 757 | 1217 | 1030 | 734 |
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 | cross-on | on | on | cross-on | on | on | cross-on | on | on | on | on | on | on |
High Tide | 12:58PM0.56m | 1:29PM0.59m | 1:57PM0.62m | 10:51PM0.28m | 2:25PM0.63m | 00:03AM0.30m | 2:52PM0.65m | 00:49AM0.31m | 3:19PM0.66m | 1:31AM0.33m | |||||||||
Low Tide | 3:43AM0.04m | 4:39AM0.02m | 5:29AM-0.00m | 9:26PM0.24m | 6:12AM-0.02m | 9:10PM0.23m | 6:51AM-0.04m | 9:22PM0.23m | 7:26AM-0.05m | 9:42PM0.21m | |||||||||
 |  |  | | | | | | |  |  | |  | | | | | | | |
 | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 7:14 | — | 7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — |
mm | — | 1 | — | — | 1 | — | — | — | — | 3 | — | — | — | — | — | — | — | — | 2 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 22 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 23 | 22 | 22 | 22 | 23 | 22 | 23 | 24 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | E 12 | S 12 | S 13 | SSW 18 | S 12 | SSW 17 | SSW 16 | E 14 | SSW 19 | SSW 18 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | SSW 14 | S 14 | E 12 |
| kJ | 139 | 45 | 55 | 112 | 46 | 59 | 52 | 62 | 115 | 103 | 260 | 298 | 485 | 522 | 515 | 757 | 36 | 32 | 734 |
Swell 2 Height (m) Direction Period (s) | S 13 | SSW 20 | SSW 20 | S 11 | SSW 18 | S 12 | S 12 | SSW 19 | E 13 | E 15 | SSW 16 | S 16 | SSW 16 | SSW 15 | SSW 15 | S 14 | S 10 | SSE 10 | SSW 14 |
| kJ | 52 | 77 | 75 | 20 | 104 | 25 | 25 | 125 | 55 | 72 | 90 | 131 | 83 | 73 | 42 | 65 | 2 | 9 | 38 |
Swell 3 Height (m) Direction Period (s) | SSW 22 | NNW 10 | NNW 10 | S 13 | NNW 9 | SSW 21 | SSW 20 | SSW 16 | S 11 | E 12 | S 10 | S 12 | S 10 | S 11 | S 11 | SSE 10 | SSE 10 | S 9 | S 10 |
| kJ | 91 | 10 | 9 | 31 | 8 | 44 | 82 | 50 | 10 | 47 | 9 | 3 | 2 | 2 | 2 | 20 | 18 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | NE 7 | NE 10 | ENE 13 | ENE 12 | NNE 7 |
| kJ | 203 | 395 | 317 | 332 | 459 | 408 | 498 | 493 | 461 | 517 | 372 | 362 | 406 | 289 | 254 | 211 | 1217 | 1030 | 107 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 44 | 51 | 116 | 50 | 52 | 116 | 50 | 44 | 116 | 44 | 45 | 46 | 44 | 44 | 116 | 17 | 44 | 44 | 15 |
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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