Surf Forecasts:
Waimanalo surf forecast from 8 Jul 2026:
- Most powerful swell: Thursday 9 Jul, 2AM (local time) - 8ft (2.4m), 8s period, ENE swell with 640 kJ wave energy.
Best Forecast Surf Conditions for Waimanalo this week:
The most powerful waves expected at Waimanalo in the next 16 days are 2.4m 8s and forecast to arrive on Thursday (Jul 09) 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 0.4m 14s period and expected on Wednesday (Jul 08) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Thu 9th Jul) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
Alright, let me tell you how it is. It’s Rusty here, and I’ve gotta be straight with you – for this region, the next couple of weeks are looking like a write-off. There are no good surf options in this 16-day window. The waves are there, but the wind has got them all messed up.
Right from the start, Wednesday July 8th, we’ve got a lumpy 7ft swell at Waimanalo coming from the ENE, but a fresh breeze is blowing onshore all day, making it choppy and just poor. The energy is moderate, at around 469, but it’s not helping. This pattern just locks in. Day after day, the wind sticks from the ENE, sometimes NE, but always onshore or cross-onshore, and the wave comment is always “poor surf conditions.”
Through the first week, Thursday the 9th, Friday the 10th, and into the weekend, it’s the same story. Swell heights hover around 6ft to 7ft, with periods a short 7 to 8 seconds, and that fresh onshore wind keeps things messy. Wave energy picks up a bit on Sunday the 12th to 590, but the wind and direction just kill the quality.
The second week isn’t any kinder. From Monday July 14th through to the end of the forecast, the swell drops off a bit, down to 5ft and 4ft, but it’s still onshore wind – moderate breeze or fresh breeze – and the surf stays poor. By Wednesday July 22nd and Thursday the 23rd, we get a long period groundswell of 14 seconds from the east at only 3ft, but it’s still cross-onshore with rain showers. The period is long, meaning it’ll be fat and weak on a beach break, and the wind won’t give you a clean face. The water temperature anomaly isn't given, so we can't say much about that, but the whole setup just isn't for paddle surfing.
This is a blank run, plain and simple. The onshore winds are relentless, and for a mostly exposed beach setup like Waimanalo, that's a killer. If you’ve got a kite, maybe, just maybe, that moderate wave energy (often in the 200-400 range) could be fun with the wind, but for a surfboard, it’s a hard pass. Forecasts can change, but right now, put the board away.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Wed night. Warm (max 25°C on Wed morning, min 24°C on Tue night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Fri night. Warm (max 25°C on Sat afternoon, min 24°C on Fri night). Mainly strong winds. | ||||||||||||||||||||
Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tue 14 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 456 | 469 | 469 | 640 | 494 | 411 | 456 | 417 | 428 | 485 | 435 | 405 | 387 | 408 | 590 | 493 | 439 | 345 | 369 | 319 | 344 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | cross-on | cross-on | on | on | on | on | cross-on | on | on | on | on | on | cross-on | on | on | cross-on | on | on |
High Tide | 11:36AM0.46m | 6:52PM0.41m | 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 | ||||||||||
Low Tide | 3:04AM0.02m | 4:21PM0.34m | 3:52AM-0.03m | 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 | ||||||||||
 |  | |  |  | | | |  | | | |  | | | | | | | | | |
 | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — |
 | 7:16 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 |
mm | — | — | — | 2 | 1 | — | 1 | 1 | — | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 |
Feels °C | 20 | 22 | 21 | 20 | 23 | 22 | 23 | 23 | 23 | 22 | 21 | 22 | 23 | 23 | 23 | 22 | 21 | 21 | 21 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 13 | SSW 13 | 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 |
| kJ | 63 | 36 | 35 | 34 | 30 | 27 | 26 | 11 | 11 | 11 | 34 | 30 | 48 | 67 | 64 | 39 | 36 | 21 | 20 | 19 | 18 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 18 | S 18 | S 8 | 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 | SSE 11 |
| kJ | 2 | 6 | 6 | 1 | 5 | 5 | 4 | 18 | 17 | 37 | 11 | 11 | 13 | 13 | 11 | 14 | 14 | 13 | 12 | 36 | 11 |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 15 | S 8 | W 14 | S 23 | — | W 14 | W 13 | S 8 | S 14 | — | W 13 | W 12 | W 12 | S 20 | SW 21 | SW 18 | SSE 11 | SW 19 |
| kJ | — | — | — | 17 | 1 | 4 | 10 | — | 4 | 4 | 1 | 4 | — | 3 | 3 | 3 | 8 | 17 | 13 | 11 | 14 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 456 | 469 | 469 | 640 | 494 | 411 | 456 | 417 | 428 | 485 | 435 | 405 | 387 | 408 | 590 | 493 | 439 | 345 | 369 | 319 | 344 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 50 | 52 | 55 | 50 | 50 | 50 | 44 | 50 | 52 | 50 | 50 | 46 | 44 | 44 | 50 | 44 | 44 | 45 | 44 | 44 | 45 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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