Surf Forecasts:
Waimanalo surf forecast from 25 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 2AM (local time) - 10ft (3.0m), 12s period, ENE swell with cross-onshore winds.
- Most powerful swell: Wednesday 29 Jul, 2AM (local time) - 10ft (3.0m), 12s period, ENE swell with 2,201 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 2AM (local time) - 10ft (3.0m), 12s 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 2AM. The primary swell is predicted to be 3.0m and 12s 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 3.0m 12s and forecast to arrive on Wednesday (Jul 29) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Jul 29) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 29th Jul) | 10ft (3.0m) 12s |
| Best Surf | 2AM (Wed 29th Jul) | 10ft (3.0m) 12s |
| Most Powerful | 2AM (Wed 29th Jul) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
The Lowdown
Alright, Rusty here again.
Let’s be honest, this Waimanalo stretch is looking like a tough stretch. There’s a long, dry spell before anything even starts to look like a wave.
From now through July 28th, it’s a total loss. Strong onshore ENE winds are just bulldozing the surf. There’s swell, but it’s short-period and wind-chopped. You’d be fighting a losing battle.
Then we get a little glimmer on the 29th. Wednesday morning, the wind goes glassy at 5 km/h from the SSE. That’s your window. The swell is a solid 8.2ft from the ENE, with a clean 10-second period, and the combined energy is strong (1630). This one is for the experienced crew only—that’s a lot of water moving. For anyone who knows what they’re doing, it’s going to be excellent. The water temp is 79.9°, which is about average for the time of year. Just keep in mind, this spot can get crowded, so plan ahead.
After that short burst, it’s back to the grind. The wind swings onshore by Wednesday afternoon, and the rest of the forecast is more of the same: choppy, onshore, and poor. There’s a stretch of lumpy, cross-onshore junk from August 6th through the 9th, with short period swells that just won’t clean up. Honestly, it’s a rough run. Don’t hold your breath.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Warm (max 25°C on Sat morning, min 24°C on Sat night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Tue morning. Warm (max 27°C on Wed afternoon, min 25°C on Tue morning). Winds increasing (calm on Wed morning, fresh winds from the ENE by Thu night). | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 15 | E 14 | E 13 | ENE 13 | E 13 | E 13 | ENE 12 | ENE 10 | ENE 10 | ENE 8 | ENE 8 | E 8 | E 7 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 489 | 531 | 517 | 441 | 418 | 602 | 530 | 577 | 1699 | 1218 | 1543 | 2201 | 1630 | 816 | 521 | 395 | 337 | 387 | 601 | 504 | 826 |
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 | on | on | cross-on | glassy | cross | cross-on | cross-on | on | cross-on | cross-on | on | on |
High Tide | 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 | 4:07PM0.66m | 2:57AM0.35m | 4:27PM0.64m | 3:46AM0.36m | |||||||
Low Tide | 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 | 8:32AM-0.04m | 10:31PM0.18m | 9:04AM-0.01m | 10:57PM0.16m | ||||||||
 | |  | | | | | |  |  | |  | | | | | |  | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — |
mm | — | — | — | — | — | — | — | — | 2 | 1 | — | 1 | — | 2 | 4 | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 25 |
Feels °C | 23 | 22 | 21 | 21 | 22 | 22 | 23 | 23 | 24 | 25 | 25 | 25 | 30 | 29 | 29 | 26 | 25 | 24 | 23 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | E 14 | SSW 19 | SSW 18 | E 15 | E 15 | E 15 | E 14 | E 13 | NNE 10 | E 13 | E 13 | ENE 12 | ENE 10 | ENE 10 | S 14 | SSW 14 | SSW 13 | E 16 | E 15 | E 15 | E 14 |
| kJ | 62 | 115 | 103 | 275 | 418 | 602 | 530 | 577 | 61 | 1218 | 1543 | 2201 | 1630 | 816 | 62 | 61 | 59 | 46 | 109 | 150 | 146 |
Swell 2 Height (m) Direction Period (s) | SSW 19 | E 13 | E 15 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | S 14 | S 14 | S 13 | S 15 | S 14 | SW 19 | SW 18 | N 9 | S 13 | N 9 | N 8 | N 8 |
| kJ | 125 | 55 | 72 | 90 | 86 | 83 | 73 | 42 | 41 | 32 | 32 | 30 | 38 | 65 | 15 | 12 | 6 | 30 | 13 | 12 | 12 |
Swell 3 Height (m) Direction Period (s) | S 11 | S 11 | E 12 | S 10 | S 11 | SE 11 | S 11 | S 11 | S 11 | S 10 | — | S 15 | — | S 20 | S 13 | N 9 | SSW 18 | N 9 | S 12 | S 12 | S 12 |
| kJ | 23 | 9 | 47 | 9 | 9 | 5 | 2 | 2 | 2 | 8 | — | 18 | — | 7 | 4 | 7 | 30 | 14 | 27 | 26 | 11 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | NE 7 | NE 7 | ENE 13 | NNE 7 | NNE 6 | — | — | S 3 | ENE 8 | ENE 8 | E 8 | E 7 | E 8 | E 8 | E 8 |
| kJ | 489 | 531 | 517 | 441 | 393 | 352 | 322 | 303 | 1699 | 178 | 131 | — | — | 6 | 521 | 395 | 337 | 387 | 601 | 504 | 826 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 50 | 56 | 44 | 50 | 50 | 44 | 44 | 44 | 15 | 17 | 46 | 14 | 0 | 23 | 9 | 48 | 44 | 45 | 52 | 56 | 116 |
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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