Surf Forecasts:
Waimanalo surf forecast from 9 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 11PM (local time) - 7ft (2.2m), 8s period, ENE swell with 612 kJ wave energy.
Best Forecast Surf Conditions for Waimanalo this week:
The most powerful waves expected at Waimanalo in the next 16 days are 2.2m 8s and forecast to arrive on Sunday (Jul 12) at 11PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 13s period and expected on Thursday (Jul 09) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sun 12th Jul) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
Alright folks, Rusty here. Let’s be straight with you—this is a tough one. The whole 16-day window for Waimanalo is a write-off for decent surf. There’s not a single session that gets the nod. The wind is relentless, blowing onshore or cross-onshore almost the entire time, and the swell is a junky, short-period mess between 5ft and 7ft, mostly from the ENE. That’s the wrong direction for this spot, which needs something from the NE to work properly. The water temp is sitting at 79°, which is bang on average for this time of year, so no surprises there.
From Thursday the 9th of July all the way through to Friday the 24th of July, it’s a total blank run. The first few days, the wind is a stiff 22 to 25 mph from the ENE, making the ocean lumpy, choppy, and generally hostile. The combined wave energy is moderate—values like 477, 440, and 516—but it’s all wasted on poor conditions. Even when the swell does drop off later in the second week, the wind stays on it, and the period stays short, around 6 to 8 seconds. There’s a brief moment around the 20th and 21st of July where the swell direction shifts to the east and the period jumps to 16 and 19 seconds, but that’s a long-period groundswell hitting a beach break with onshore wind. Those waves will be straight and hard to manage, and with the wind howling onshore, it’s a no-go.
For a spot that’s fairly consistent, this is a rare dry spell. There’s just nothing to ride here. If you’re determined to get in the water, the setup looks more interesting for kite surfing than paddle surfing, given the consistent cross-onshore breeze and 7ft+ swell. But for a surfboard? Stay home and wait for a change in the forecast.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sat night. Warm (max 25°C on Thu morning, min 24°C on Thu morning). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Tue night. Warm (max 25°C on Sun afternoon, min 24°C on Sun morning). Mainly strong winds. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 477 | 440 | 417 | 330 | 310 | 372 | 412 | 376 | 400 | 516 | 536 | 579 | 410 | 373 | 289 | 310 | 369 | 359 | 325 | 277 | 419 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | on | on | on | on | on | on | cross-on | on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on |
High Tide | 12:27PM0.56m | 1:10PM0.65m | 1:52PM0.71m | 10:48PM0.30m | 2:34PM0.75m | 00:11AM0.30m | 3:15PM0.77m | 1:17AM0.31m | 3:55PM0.76m | 2:18AM0.32m | 4:33PM0.73m | 3:19AM0.32m | |||||||||
Low Tide | 4:44AM-0.07m | 5:35AM-0.11m | 9:11PM0.25m | 6:26AM-0.14m | 9:32PM0.24m | 7:16AM-0.15m | 10:02PM0.22m | 8:04AM-0.15m | 10:36PM0.21m | 8:49AM-0.11m | 11:10PM0.19m | ||||||||||
 | |  | | | | | |  | | | | |  | | | | | | | | |
 | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — |
 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — |
mm | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | 2 | — | — | 1 |
Temp °C | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 25 | 25 | 25 |
Feels °C | 23 | 21 | 21 | 22 | 21 | 22 | 21 | 21 | 21 | 21 | 22 | 21 | 21 | 21 | 21 | 22 | 23 | 22 | 24 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | S 12 | S 12 | S 12 | S 12 | S 12 | SSW 18 | SSW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | SSW 13 | SSW 18 | SSW 16 |
| kJ | 30 | 27 | 26 | 24 | 11 | 11 | 34 | 30 | 48 | 41 | 40 | 39 | 36 | 21 | 20 | 19 | 18 | 29 | 16 | 31 | 24 |
Swell 2 Height (m) Direction Period (s) | S 16 | S 16 | S 15 | SW 21 | SW 21 | SSW 19 | S 12 | S 12 | S 13 | S 13 | S 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSW 19 | SE 11 | SSW 13 | SSW 18 | SSW 12 | WNW 16 |
| kJ | 5 | 5 | 4 | 18 | 17 | 37 | 11 | 11 | 13 | 13 | 11 | 14 | 14 | 13 | 12 | 36 | 4 | 16 | 30 | 14 | 25 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 24 | S 8 | — | SE 7 | W 13 | W 14 | S 14 | W 13 | W 13 | — | W 12 | S 20 | SW 21 | N 9 | SSE 11 | SW 19 | W 16 | W 16 | SW 15 | SE 9 |
| kJ | 1 | 11 | 1 | — | 2 | 4 | 4 | 4 | 3 | 3 | — | 3 | 8 | 17 | 6 | 11 | 14 | 5 | 5 | 8 | 3 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 477 | 440 | 417 | 330 | 310 | 372 | 412 | 376 | 400 | 516 | 536 | 579 | 410 | 373 | 289 | 310 | 369 | 359 | 325 | 277 | 419 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 45 | 56 | 58 | 44 | 52 | 45 | 52 | 50 | 44 | 50 | 57 | 44 | 45 | 45 | 44 | 44 | 50 | 44 | 44 | 50 | 44 |
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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