
Surf Forecasts:
Waimanalo surf forecast from 24 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 11AM (local time) - 11ft (3.5m), 11s period, ENE swell with onshore winds.
- Most powerful swell: Wednesday 29 Jul, 8AM (local time) - 13ft (4.0m), 11s period, ENE swell with 3,565 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 11AM (local time) - 11ft (3.5m), 11s period with ENE swell.
Best Forecast Surf Conditions for Waimanalo this week:
The surf forecast for Waimanalo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 29) at 11AM. The primary swell is predicted to be 3.5m and 11s period. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Waimanalo in the next 16 days are 4.0m 11s and forecast to arrive on Wednesday (Jul 29) at 8AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 19s period and expected on Thursday (Jul 23) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 29th Jul) | 11ft (3.5m) 11s |
| Best Surf | 11AM (Wed 29th Jul) | 11ft (3.5m) 11s |
| Most Powerful | 8AM (Wed 29th Jul) | 13ft (4.0m) 11s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down the surf outlook for Waimanalo. I gotta be honest—this is a tough stretch. The first week and a half looks pretty bleak. The wind is howling from the ENE, blowing straight onshore, and it’s making a mess of the waves. There’s some solid swell in the water, but it’s getting thrashed by these strong winds, so the surf quality is poor for days on end. You’re looking at a big gap of about 10 days where there’s nothing worth paddling out for.
The water temperature is sitting at 80°F, which is pretty normal for this time of year—no big surprise there.
The one real glimmer of hope comes on Wednesday the 29th of July. That afternoon, the wind finally swings around to a light SSW offshore breeze, just 3 mph, glassing things up. The swell drops to 8 ft from the ENE, with a combined wave energy of 949 (moderate energy). The wind is light and offshore, so the sets should be clean. This is the standout window in the whole 16-day forecast. Waimanalo is an exposed beach break, so that long-period energy isn’t ideal for it, but with the wind off and the swell size manageable, it’ll be the best you’ll see.
After that, it’s back into the onshore wind pattern for the rest of the run. The second week sees the swell dropping a bit and the winds staying stubbornly onshore. A few days around the 6th and 7th of August have lighter winds (9 mph from the ENE), and the swell is around 5 ft to 6 ft with periods of 9 to 10 seconds, but the surf condition is still marginal or poor. Nothing to get excited about. The breaks are likely to be a bit of a mess.
So here’s the takeaway: if you’re waiting for a session, circle Wednesday the 29th of July. That’s your day. The rest of the window is a write-off for clean surf at Waimanalo. It’s a tough run for this area, but forecasts can change, and it’s not the end of the world.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 25°C on Thu night, min 24°C on Thu night). Mainly strong winds. | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Wed morning. Warm (max 26°C on Tue afternoon, min 24°C on Sun night). Mainly fresh winds. | ||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | E 14 | E 14 | E 14 | E 13 | ENE 13 | E 12 | E 13 | ENE 12 | ENE 11 | ENE 9 | ENE 8 |
Wave Graph | |||||||||||||||||||
316 | 513 | 394 | 485 | 425 | 573 | 504 | 393 | 412 | 472 | 522 | 485 | 1295 | 869 | 1021 | 2139 | 3034 | 1297 | 727 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross | cross-on |
High Tide | 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 | 3:44PM0.66m | 2:12AM0.34m | ||||||||
Low Tide | 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 | 7:59AM-0.05m | 10:06PM0.20m | ||||||||
— | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
7:13 | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 1 | 1 | 2 | 5 | 4 | 6 |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 22 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 22 | 25 | 25 | 24 | 28 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | S 12 | SSW 17 | S 12 | E 14 | SSW 19 | SSW 18 | E 15 | E 14 | E 14 | E 14 | E 13 | NNE 10 | E 12 | E 13 | S 14 | SSW 15 | S 14 | SSW 14 |
37 | 46 | 59 | 25 | 62 | 115 | 103 | 279 | 412 | 472 | 522 | 485 | 63 | 869 | 1021 | 36 | 71 | 64 | 66 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SSW 18 | S 12 | E 15 | SSW 19 | E 13 | E 15 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | S 14 | SSW 14 | S 13 | S 21 | S 15 | S 20 | SW 19 |
112 | 104 | 25 | 42 | 125 | 55 | 72 | 90 | 85 | 83 | 73 | 42 | 65 | 36 | 31 | 9 | 71 | 7 | 15 | |
Swell 3 Height (m) Direction Period (s) | S 11 | NNW 9 | SSW 21 | SSW 20 | S 11 | S 11 | E 12 | S 10 | S 11 | S 10 | S 10 | S 11 | NNE 10 | S 10 | S 16 | S 15 | SW 21 | SW 15 | S 13 |
20 | 8 | 44 | 82 | 23 | 10 | 47 | 8 | 9 | 2 | 2 | 2 | 63 | 2 | 20 | 4 | 17 | 8 | 3 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | NE 7 | ENE 7 | ENE 13 | NNE 7 | NNE 9 | ENE 12 | ENE 11 | ENE 9 | ENE 8 |
316 | 513 | 394 | 485 | 425 | 573 | 504 | 393 | 329 | 311 | 254 | 259 | 1295 | 142 | 307 | 2139 | 3034 | 1297 | 727 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 45 | 56 | 56 | 45 | 50 | 57 | 44 | 44 | 46 | 44 | 44 | 116 | 15 | 42 | 147 | 17 | 9 | 46 | 9 |
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.










