Surf Forecasts:
Waimanalo surf forecast from 27 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 8AM (local time) - 10ft (3.0m), 11s period, ENE swell with cross-onshore winds.
- Most powerful swell: Tuesday 28 Jul, 8PM (local time) - 8ft (2.5m), 13s period, E swell with 2,157 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 8AM (local time) - 10ft (3.0m), 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 8AM. The primary swell is predicted to be 3.0m and 11s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Waimanalo in the next 16 days are 2.5m 13s and forecast to arrive on Tuesday (Jul 28) 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 0.4m 16s period and expected on Sunday (Jul 26) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Wed 29th Jul) | 10ft (3.0m) 11s |
| Best Surf | 8AM (Wed 29th Jul) | 10ft (3.0m) 11s |
| Most Powerful | 8PM (Tue 28th Jul) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's get real about the surf ahead. We've got Waimanalo on the menu, and it’s a tough stretch.
The whole 16-day window looks pretty grim, to be honest. We're looking at a long run of poor conditions, with a brief flicker of hope that's really only for the experienced crew. Most of the time, the wind is howling onshore from the ENE, making a mess of things. The water temp is sitting at 80°F, which is about average for the time of year, so the wetsuit can stay at home.
The only day that even gets close to a shout is Wednesday, July 29th. The morning session will see a solid 10ft of swell coming from the NE, but here's the catch – it's predicted to be too big for this break. The wind is a light cross-onshore, which is about as good as it gets in this forecast, but the wave energy is strong (1729). The combined energy of all swells is moderate to strong. This is a big, powerful swell with an 11-second period. For a beach break, a long-period swell like this can make things a bit too straight and walled-up. This is strictly for experts only. The afternoon will drop to 8ft, but the wind switches to a light north cross-onshore, making it marginal. The crowd situation at Waimanalo is "sometimes", so you might have some company if you're mad enough to go out.
The rest of the window is a write-off. From Sunday, July 26th, right through to Monday, August 10th, it's a wasteland of onshore winds and poor surf conditions. The wind is relentless, blowing at 18 to 25 mph most days, creating lumpy, choppy, messy surf. The swell sticks around, but the quality is just not there. It’s one of those stretches where the forecast looks more interesting for kite surfing than paddle surfing. The combined energy of all swells for the whole period is weak to moderate. It’s a long, frustrating blank run, but that’s the reality of the forecast.
Rusty, signing off.
Short Range ForecastLight rain (total 4mm), mostly falling on Mon night. Warm (max 26°C on Tue afternoon, min 24°C on Sun night). Winds decreasing (fresh winds from the ENE on Sun afternoon, light winds from the N by Tue night). | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Thu afternoon, min 25°C on Wed morning). Winds increasing (light winds from the ENE on Wed night, strong winds from the ENE by Fri night). | ||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | |||||||||||||||
AM | PM | 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 | E 15 | E 15 | E 14 | E 13 | E 13 | E 13 | E 13 | ENE 12 | NE 11 | NE 10 | ENE 9 | ENE 8 | E 8 | E 7 | E 7 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 403 | 418 | 602 | 640 | 690 | 1275 | 1380 | 1999 | 1671 | 1729 | 929 | 281 | 353 | 272 | 376 | 483 | 585 | 765 | 916 | 956 | 1000 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on |
High Tide | 2:25PM0.63m | 00:03AM0.30m | 2:52PM0.65m | 00:49AM0.31m | 3:19PM0.66m | 1:31AM0.33m | 3:44PM0.66m | 2:12AM0.34m | 4:07PM0.66m | 2:57AM0.35m | 4:27PM0.64m | 3:46AM0.36m | 4:44PM0.61m | 4:42AM0.37m | |||||||
Low Tide | 9:10PM0.23m | 6:51AM-0.04m | 9:22PM0.23m | 7:26AM-0.05m | 9:42PM0.21m | 7:59AM-0.05m | 10:06PM0.20m | 8:32AM-0.04m | 10:31PM0.18m | 9:04AM-0.01m | 10:57PM0.16m | 9:37AM0.05m | 11:22PM0.13m | ||||||||
 |  |  | | |  |  | |  | | | | | | | | | | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — |
mm | — | — | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 26 | 26 | 26 | 27 | 25 | 26 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 22 | 22 | 22 | 22 | 24 | 24 | 26 | 26 | 25 | 29 | 29 | 29 | 28 | 28 | 24 | 24 | 23 | 22 | 22 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | E 15 | E 15 | E 15 | E 14 | E 13 | E 13 | E 13 | E 13 | ENE 12 | NE 11 | NE 10 | ENE 9 | S 13 | S 13 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 |
| kJ | 275 | 418 | 602 | 640 | 690 | 1275 | 1380 | 1999 | 1671 | 1729 | 929 | 281 | 56 | 55 | 82 | 161 | 216 | 202 | 199 | 202 | 202 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | S 14 | S 14 | S 14 | SSW 14 | S 15 | S 14 | N 7 | SW 18 | N 9 | S 13 | S 12 | S 12 | N 8 | S 11 | SSW 14 | N 10 |
| kJ | 90 | 85 | 83 | 73 | 42 | 37 | 32 | 32 | 40 | 38 | 65 | 88 | 12 | 7 | 53 | 27 | 26 | 5 | 10 | 18 | 17 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 11 | SE 11 | S 11 | S 11 | NNE 10 | S 10 | — | NNE 9 | — | S 20 | S 14 | N 10 | E 18 | N 9 | N 8 | N 8 | S 12 | SSW 14 | S 11 | SSW 14 |
| kJ | 9 | 9 | 5 | 2 | 2 | 36 | 7 | — | 53 | — | 7 | 62 | 7 | 24 | 14 | 13 | 12 | 11 | 19 | 10 | 20 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | NE 7 | NE 7 | NNE 7 | NNE 9 | NNE 9 | NNE 6 | — | — | — | ENE 8 | E 8 | E 7 | E 7 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 403 | 382 | 320 | 301 | 277 | 180 | 249 | 194 | 93 | — | — | — | 353 | 272 | 376 | 483 | 585 | 765 | 916 | 956 | 1000 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 50 | 55 | 44 | 44 | 44 | 9 | 9 | 46 | 9 | 7 | 7 | 5 | 9 | 14 | 44 | 50 | 52 | 52 | 138 | 118 | 52 |
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.
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