
Surf Forecasts:
Waimanalo surf forecast from 24 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 11AM (local time) - 10ft (3.0m), 11s period, ENE swell with cross-onshore winds.
- Most powerful swell: Wednesday 29 Jul, 8AM (local time) - 11ft (3.5m), 11s period, ENE swell with 2,695 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 11AM (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 11AM. 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 3.5m 11s and forecast to arrive on Wednesday (Jul 29) at 8AM. 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 4s period and expected on Wednesday (Jul 29) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 29th Jul) | 10ft (3.0m) 11s |
| Best Surf | 11AM (Wed 29th Jul) | 10ft (3.0m) 11s |
| Most Powerful | 8AM (Wed 29th Jul) | 11ft (3.5m) 11s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on offer for the next couple of weeks.
Honestly, this is a tough one for Waimanalo. The first ten days of the forecast are pretty much a write-off for decent surf. From Friday the 24th of July right through to the end of the month, it’s a constant battle with strong onshore winds from the ENE, mostly in the 18 to 25 mph range. That’s a recipe for messy, blown-out conditions. We’re looking at swell heights around 6 ft to 7 ft, but the wind is just ruining it. The combined swell energy is moderate to strong, hitting 454 on Friday morning, but with those winds, you’d be wasting your time. There’s a block of days here with no real surf to recommend.
We finally get a glimpse of something a little different on Wednesday the 29th of July. In the morning, a big 10 ft ENE swell rolls in with a period of 11 seconds, and the combined energy is a hefty 2285. But here’s the thing – that’s way too much size for Waimanalo. It’s a beginner-friendly break, and over 8 ft is expert-only territory. The wind is a light cross-on from the NNW at 9 mph, which is okay, but the forecast itself says it’s too big for this spot. The afternoon of the 29th is a different story. The wind swings to a light SSW at 9 mph, giving us a clean, cross-off breeze. The swell drops to 8 ft, and the energy is still solid at 958. This is the real standout of the whole outlook. The conditions are labeled as “very good,” and while the swell is still on the big side for beginners, for the average surfer who can handle a bit of power, that Wednesday afternoon is your best bet. It’s the only window in the first week and a half that looks genuinely clean.
After that, it’s back to the grind. From Thursday the 30th through to the end of the first week of August, the ENE winds return, mostly in the 15 to 22 mph range, and the surf is poor again. The swell quality is just not there. There’s a bit of a pulse on the 4th of August with a 6 ft ENE swell and a 13-second period, but it’s still onshore and labelled as poor. The combined energy is strong at 1211, but the wind kills it.
The very end of the run, on Friday the 7th of August, offers a tiny glimmer. A 5 ft NE swell with a 9-second period, and a light cross-off wind from the SSE in the afternoon. The energy is weak at 405, and the forecast says “good” conditions. But that’s a long way off, and with such small, weak waves, it’s more of a longboard or foiling session than a proper stand-up wave. It’s a promising detail, but not something to get too excited about a week and a half out.
The water temperature is sitting at 80°F, with a tiny anomaly of 0.4°F, so it’s perfectly average for the time of year.
So, the short story: wait for the afternoon of Wednesday the 29th of July. That’s your one truly good chance to get a clean wave at Waimanalo before the wind messes it up again.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Fri morning, min 24°C on Sat night). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Wed night. Warm (max 27°C on Wed afternoon, min 24°C on Mon morning). Winds decreasing (fresh winds from the NE on Mon afternoon, light winds from the NW by Wed afternoon). | ||||||||||||||||||||
Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | |||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | E 13 | ENE 12 | ENE 11 | ENE 9 | ENE 8 | ENE 8 | ENE 7 | E 7 |
Wave Graph | |||||||||||||||||||||
446 | 432 | 456 | 489 | 544 | 504 | 393 | 412 | 492 | 538 | 586 | 878 | 1228 | 1191 | 2302 | 2285 | 958 | 561 | 542 | 414 | 522 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-off | cross | cross-on | cross-on | 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 | 4:07PM0.66m | 2:57AM0.35m | ||||||||
Low Tide | 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 | 8:32AM-0.04m | 10:31PM0.18m | |||||||||
6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | |
— | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | — | 2 | — | 3 | 1 | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 | 25 | 27 | 26 | 26 | 26 | 26 |
Feels °C | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 23 | 22 | 23 | 23 | 23 | 25 | 26 | 24 | 26 | 29 | 29 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | S 12 | SSW 17 | S 12 | E 14 | SSW 19 | SSW 18 | E 15 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | E 13 | S 14 | ENE 11 | ENE 9 | SSW 14 | SSW 14 | SSW 13 | NNE 9 |
46 | 59 | 25 | 62 | 115 | 103 | 279 | 412 | 492 | 538 | 586 | 878 | 1228 | 1191 | 36 | 2285 | 958 | 66 | 61 | 59 | 28 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | S 12 | SSW 16 | SSW 19 | E 13 | E 15 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | S 14 | S 10 | SSW 15 | S 14 | SW 19 | N 10 | N 9 | S 13 |
104 | 25 | 52 | 125 | 55 | 72 | 90 | 86 | 83 | 73 | 42 | 41 | 36 | 33 | 2 | 71 | 65 | 15 | 7 | 15 | 30 | |
Swell 3 Height (m) Direction Period (s) | NNW 9 | SSW 21 | E 15 | S 11 | S 11 | E 12 | S 10 | S 11 | S 10 | S 11 | S 11 | S 11 | S 10 | — | S 15 | SW 21 | S 20 | S 13 | SW 18 | SSW 18 | SSW 16 |
8 | 44 | 42 | 23 | 10 | 47 | 8 | 9 | 2 | 2 | 2 | 2 | 2 | — | 4 | 17 | 7 | 3 | 12 | 30 | 26 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 8 | NE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | NE 7 | NE 7 | NE 7 | NNE 6 | NNE 9 | ENE 12 | — | S 4 | ENE 8 | ENE 8 | ENE 7 | E 7 |
446 | 432 | 456 | 489 | 544 | 504 | 393 | 382 | 282 | 261 | 255 | 178 | 145 | 273 | 2302 | — | 10 | 561 | 542 | 414 | 522 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 56 | 56 | 44 | 50 | 52 | 44 | 44 | 50 | 18 | 44 | 116 | 9 | 9 | 46 | 17 | 14 | 0 | 23 | 44 | 48 | 50 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










