Surf Forecasts:
Waimanalo surf forecast from 28 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 11AM (local time) - 7ft (2.1m), 10s period, ENE swell with glassy winds.
- Most powerful swell: Tuesday 28 Jul, 2PM (local time) - 7ft (2.2m), 13s period, E swell with 1,642 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 11AM (local time) - 7ft (2.1m), 10s 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 2.1m and 10s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Waimanalo in the next 16 days are 2.2m 13s and forecast to arrive on Tuesday (Jul 28) at 2PM. 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 15s period and expected on Wednesday (Jul 29) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Wed 29th Jul) | 7ft (2.1m) 10s |
| Best Surf | 11AM (Wed 29th Jul) | 7ft (2.1m) 10s |
| Most Powerful | 2PM (Tue 28th Jul) | 7ft (2.2m) 13s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
The Lowdown
Alright, Rusty here again. Let's break down the same swell for the Waimanalo area, but in feet and miles per hour.
So, the outlook is a bit of a mixed bag. We've got some consistent swell in the mix, but the wind is going to be the main character for most of the run. The water is sitting at about 80°, which is bang on average for this time of year, so no surprises there.
The best bet across the whole 16 days is shaping up to be Wednesday, the 29th of July. We've got a solid 7ft swell from the ENE, and the wind goes completely glassy in the morning. That's the kind of magic window you want to be on it. The swell energy is moderate (821), and the period is a solid 10 seconds, so there'll be some proper shape to the waves. The cross-shore breeze picks up a little in the afternoon, but the morning session at Waimanalo is where it's at. It's a beginner-friendly break, and it's fairly consistent, so expect some company out there – crowds are sometimes a thing.
The rest of the week is a bit of a write-off, honestly. That ENE trade wind kicks in and stays howling at 15 to 25 mph, making most of the surf sessions pretty poor. The swell sticks around, but with that wind on it or cross-on, it's going to be choppy and lumpy. For a beach break, that setup is more interesting for the kite surfers than us paddle folk.
We hit a bit of a lull. There's a long stretch of days where the conditions are just poor. The wind stays strong, and the swell quality drops off. It's not until the 12th of August, a Wednesday, that we see a flicker of life. The wind eases back to a light breeze, and the surf becomes marginal. The swell is small, around 5ft to 6ft from the ENE, with a short period of 7 seconds, so it won't be the best quality, but at least it's not howling a gale.
So, look, if you're keen, get out on the 29th of July for that glassy morning. After that, you're waiting a long time for anything that's even worth a look. Forecasts can change, but as it stands, there's a big gap between that Wednesday and the 12th of August.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue morning. Warm (max 27°C on Wed morning, min 24°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Fri morning, min 24°C on Fri night). Mainly strong winds. | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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) | E 13 | E 13 | ENE 11 | ENE 10 | NE 9 | ENE 8 | ENE 8 | ENE 8 | E 7 | E 7 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1510 | 1609 | 1173 | 821 | 515 | 299 | 308 | 226 | 311 | 427 | 423 | 756 | 773 | 787 | 844 | 801 | 705 | 597 | 446 | 338 | 336 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | glassy | cross | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on | on |
High Tide | 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 | 4:58PM0.57m | 5:48AM0.38m | 5:09PM0.52m | ||||||||
Low Tide | 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 | 10:12AM0.11m | 11:50PM0.10m | 10:52AM0.19m | 00:22AM0.07m | ||||||||
 |  |  | | |  | |  |  | | | | | | | | | | | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — |
mm | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 25 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 25 | 26 | 26 | 31 | 30 | 29 | 26 | 26 | 25 | 24 | 22 | 22 | 21 | 21 | 21 | 21 | 22 | 21 | 22 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 13 | ENE 11 | ENE 10 | NE 9 | N 6 | SSW 13 | S 13 | E 16 | E 15 | E 16 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 |
| kJ | 1510 | 1609 | 1173 | 821 | 515 | 28 | 60 | 55 | 81 | 159 | 231 | 205 | 202 | 191 | 194 | 188 | 198 | 144 | 130 | 173 | 209 |
Swell 2 Height (m) Direction Period (s) | S 14 | S 14 | NNE 7 | S 15 | S 14 | S 14 | SW 18 | N 9 | S 13 | N 9 | N 8 | N 8 | N 8 | S 11 | N 10 | N 9 | SW 13 | N 8 | N 8 | N 6 | SSW 12 |
| kJ | 32 | 33 | 107 | 67 | 65 | 62 | 12 | 7 | 53 | 13 | 12 | 11 | 4 | 9 | 16 | 14 | 7 | 5 | 5 | 11 | 14 |
Swell 3 Height (m) Direction Period (s) | S 10 | — | S 13 | — | S 13 | SW 19 | E 19 | E 18 | N 9 | S 12 | S 12 | S 12 | SSW 14 | N 11 | SSW 14 | SSW 14 | S 14 | S 13 | SSW 13 | N 8 | S 13 |
| kJ | 7 | — | 30 | — | 4 | 15 | 29 | 24 | 14 | 27 | 26 | 11 | 19 | 9 | 19 | 19 | 4 | 13 | 16 | 4 | 3 |
Wind waves Height (m) Direction Period (s) | NNE 7 | NNE 9 | NNE 9 | — | — | ENE 8 | ENE 8 | ENE 8 | E 7 | E 7 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 154 | 238 | 180 | — | — | 299 | 308 | 226 | 311 | 427 | 423 | 756 | 773 | 787 | 844 | 801 | 705 | 597 | 446 | 338 | 336 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 18 | 9 | 0 | 5 | 5 | 17 | 45 | 44 | 50 | 61 | 117 | 118 | 116 | 52 | 55 | 55 | 46 | 50 | 50 | 50 |
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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