Surf Forecasts:
Waimanalo surf forecast from 14 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 5AM (local time) - 6.5ft (2.0m), 8s period, E swell with 459 kJ wave energy.
Best Forecast Surf Conditions for Waimanalo this week:
The most powerful waves expected at Waimanalo in the next 16 days are 2.0m 8s and forecast to arrive on Sunday (Jul 19) at 5AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 16s period and expected on Monday (Jul 20) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5AM (Sun 19th Jul) | 6.5ft (2.0m) 8s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a hard look at what’s on offer for the next couple of weeks down at Waimanalo. I’ll be straight with you – it’s a tough stretch coming up, so keep your expectations in check.
The short story is that Waimanalo is going to be a no-go for decent surf for nearly the entire forecast period. We’ve got a long, disappointing gap where the combination of swell and wind just isn’t friendly to a paddle surfer. The swell never really gets its act together in a way that matches the break, and the wind is almost always messy.
Right from Tuesday, the 14th of July, we’re starting off poor. The swell is coming from the NE, but it’s short period, around 8 seconds, and the wind is a stiff onshore breeze at 12 to 16 mph. That's a recipe for choppy, blown-out waves. The combined wave energy is moderate (447) on Tuesday morning but it’s all junk.
This pattern just keeps repeating. Day after day we see onshore or cross-onshore winds from the ENE, mostly in the 9 to 19 mph range, and short-period swell. The best we get in the first week is maybe 6 ft on Sunday the 19th of July, but the ENE winds are strong at 19 mph and onshore. The combined energy jumps up to a stronger level (408), but with wind like that on an exposed beach, forget it. This setup is actually more interesting for kite surfing than for paddle surfing.
There’s a long gap of roughly 10 days with no decent surf window. The wind finally eases a bit around the 28th of July, down to a gentle breeze of 9 mph, and still onshore. By Wednesday the 29th of July, the swell is back up to 6 ft from the ENE with a short 7-second period and light onshore wind. The combined energy is moderate (364), but again, the direction and wind aren’t doing us any favours. The whole stretch is a write-off for a quality surf.
So, to be honest, there isn’t a single standout day here. Nothing is breaking through. Waimanalo is an exposed beach break and it’s just not getting the right ingredients to make it worthwhile. For an area like this, a blank run of poor conditions is pretty normal. It won’t stay bad forever, but this forecast has nothing I can get excited about.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Tue afternoon. Warm (max 25°C on Wed morning, min 24°C on Mon night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu night, min 24°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Mon 20 | |||||||||||||||
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 8 | NE 8 | NE 8 | NE 7 | ENE 7 | ENE 7 | NE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | E 6 | ENE 7 | ENE 6 | E 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 226 | 229 | 248 | 174 | 148 | 105 | 176 | 108 | 119 | 192 | 143 | 160 | 182 | 265 | 212 | 366 | 408 | 322 | 266 | 249 | 193 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | on | cross-on | on | on | on | on | on |
High Tide | 1:17AM0.31m | 3:55PM0.76m | 2:18AM0.32m | 4:33PM0.73m | 3:19AM0.32m | 5:06PM0.69m | 4:23AM0.32m | 5:34PM0.63m | 5:36AM0.33m | 5:55PM0.57m | 7:07AM0.34m | 6:08PM0.51m | 9:13AM0.37m | 6:04PM0.45m | |||||||
Low Tide | 10:02PM0.22m | 8:04AM-0.15m | 10:36PM0.21m | 8:49AM-0.11m | 11:10PM0.19m | 9:34AM-0.06m | 11:44PM0.16m | 10:16AM0.02m | 00:18AM0.13m | 10:57AM0.11m | 00:51AM0.11m | 11:40AM0.20m | 1:25AM0.09m | 12:37PM0.29m | |||||||
 |  |  |  | | | | |  |  | | | | | | | | | | | | |
 | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — |
 | 7:15 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 |
mm | — | — | 2 | 3 | 2 | — | 3 | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — |
Temp °C | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 24 | 24 | 25 |
Feels °C | 22 | 23 | 23 | 23 | 26 | 25 | 24 | 25 | 25 | 24 | 24 | 23 | 24 | 23 | 23 | 24 | 22 | 23 | 22 | 22 | 24 |
Swell 1 Height (m) Direction Period (s) | E 8 | NNE 7 | SSW 14 | NE 7 | N 7 | NNE 8 | SSW 16 | NNE 7 | NNE 7 | SSW 14 | NNE 7 | NNE 7 | NNE 7 | SSW 14 | NNE 8 | NNE 8 | SSW 12 | SSW 12 | NE 8 | S 16 | S 16 |
| kJ | 148 | 138 | 18 | 174 | 28 | 65 | 48 | 43 | 42 | 18 | 43 | 29 | 29 | 37 | 22 | 23 | 29 | 14 | 16 | 46 | 127 |
Swell 2 Height (m) Direction Period (s) | NNE 7 | E 8 | SSE 11 | E 8 | SSW 13 | SSW 18 | SSE 8 | SSW 16 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SE 9 | SSW 14 | S 12 | S 19 | S 18 | S 18 | S 13 | E 16 |
| kJ | 93 | 80 | 11 | 28 | 16 | 30 | 7 | 25 | 29 | 30 | 24 | 49 | 42 | 3 | 39 | 27 | 29 | 27 | 55 | 30 | 21 |
Swell 3 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SW 19 | SSW 17 | SSW 18 | SSE 10 | W 16 | W 15 | SSE 7 | SSE 7 | SW 16 | SE 7 | SE 9 | SW 10 | SE 9 | S 21 | S 15 | S 14 | SSW 11 | SW 18 | SW 18 |
| kJ | 20 | 19 | 14 | 29 | 30 | 9 | 19 | 17 | 5 | 5 | 10 | 2 | 3 | 4 | 3 | 8 | 4 | 4 | 12 | 13 | 12 |
Wind waves Height (m) Direction Period (s) | ENE 8 | NE 8 | NE 8 | — | ENE 7 | ENE 7 | NE 7 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | E 6 | ENE 7 | ENE 6 | E 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 |
| kJ | 226 | 229 | 248 | — | 148 | 105 | 176 | 108 | 119 | 192 | 143 | 160 | 182 | 265 | 212 | 366 | 408 | 322 | 266 | 249 | 193 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 15 | 44 | 15 | 15 | 44 | 9 | 44 | 50 | 44 | 44 | 44 | 44 | 50 | 50 | 44 | 44 | 45 | 15 | 44 | 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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