
Surf Forecasts:
Waimanalo surf forecast from 12 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 2PM (local time) - 7ft (2.2m), 8s period, ENE swell with 531 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 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 11s period and expected on Friday (Jul 17) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sun 12th Jul) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
Yo, Rusty here. Alright, let’s break this down. This 16-day outlook for Waimanalo is pretty grim, to be honest. It’s a long stretch with no real surf to get excited about. The first recommendation isn’t until Sunday, July 12th, but it’s a total dud from the start.
From July 12th all the way through to July 27th, the wind is the main villain. It’s blowing onshore or cross-onshore from the ENE, at 15 to 25 mph, sometimes gusting to 25 mph. That’s a fresh breeze, and it’s just trashing any chance of clean waves. The swell is small to medium, but the wind turns it into a choppy, lumpy mess. The water temp is around 79°, about normal for this time of year.
The first week, July 12th to the 18th, is a total loss. Swell heights run from about 3 ft to 7 ft, but with a short period of 6 to 8 seconds, the waves are weak and crumbly. The combined energy is moderate, peaking at 516 on Sunday morning, but with that wind, it’s just onshore slop. Don’t bother.
The second week, July 19th to 27th, is more of the same. Swell holds around 3 ft to 6 ft, but the wind stays onshore or cross-onshore. The period stays short until the very end. On the 24th and 25th, the swell drops to tiny—around 2 ft to 3 ft—but the period jumps to a very long 15 to 18 seconds. The energy spikes to 983 on the 27th. That’s a groundswell, which at a reef could be clean, but Waimanalo is an exposed beach break. That long-period swell will likely be straight and fat, plus the wind is still onshore. It’s a cruel tease.
So, there are zero standout days. The wind is relentless, and the waves are poor. Honestly, this setup looks more interesting for kite-surfing than paddle-surfing. The crowds can be an issue at Waimanalo when it’s good, but with this forecast, you’ll have the beach to yourself. Save your energy for another week. The forecast might change, but for now, it’s a flat-out no-go.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Tue morning. Warm (max 25°C on Sun afternoon, min 24°C on Sun morning). Mainly strong winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed morning. Warm (max 25°C on Wed morning, min 24°C on Wed morning). Mainly fresh winds. | ||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Saturday 18 | |||||||||||||||
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 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | NE 8 | NE 8 | NE 7 | ENE 7 | ENE 7 | ENE 7 | E 6 | ENE 6 | ENE 7 | ENE 6 | ENE 7 | ENE 6 | E 6 | E 8 | E 8 |
Wave Graph | |||||||||||||||||||||
516 | 501 | 501 | 373 | 327 | 258 | 276 | 200 | 223 | 153 | 102 | 196 | 130 | 123 | 223 | 127 | 120 | 62 | 91 | 186 | 300 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | on | cross-on |
High Tide | 2:34PM0.75m | 00:11AM0.30m | 3:15PM0.77m | 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 | ||||||||
Low Tide | 9:32PM0.24m | 7:16AM-0.15m | 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 | ||||||||
5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | — | — | 5:58 | — | — | |
— | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | |
mm | — | — | — | — | — | — | 2 | 1 | 2 | 1 | — | 1 | — | — | — | — | — | 2 | 1 | — | — |
Temp °C | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 25 |
Feels °C | 22 | 22 | 21 | 20 | 21 | 22 | 23 | 24 | 23 | 25 | 24 | 24 | 24 | 25 | 24 | 24 | 24 | 25 | 25 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | E 8 | SSW 17 | N 7 | NNE 8 | SSE 9 | NNE 7 | NNE 7 | SSW 12 | NNE 8 | SSW 16 | NNE 7 | NNE 7 | NNE 7 | NNE 8 |
41 | 40 | 39 | 23 | 21 | 20 | 19 | 58 | 29 | 28 | 60 | 17 | 43 | 29 | 27 | 32 | 49 | 38 | 28 | 30 | 23 | |
Swell 2 Height (m) Direction Period (s) | S 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | N 8 | SSW 19 | SSW 14 | SSW 13 | SSE 12 | SSE 10 | SSW 16 | SSE 8 | SSE 8 | SSE 8 | SSW 11 | SSW 10 | ESE 8 | E 8 | SSW 14 | SSW 12 |
13 | 14 | 14 | 14 | 13 | 6 | 36 | 18 | 16 | 30 | 20 | 24 | 14 | 12 | 6 | 23 | 20 | 21 | 35 | 39 | 30 | |
Swell 3 Height (m) Direction Period (s) | W 13 | — | W 12 | S 20 | SW 21 | SSE 11 | SSE 11 | SSE 11 | SE 10 | SSW 13 | SSW 18 | W 16 | SSW 16 | SSW 17 | SSW 17 | S 16 | SSE 8 | SSW 15 | SSW 14 | SW 8 | S 20 |
3 | — | 3 | 8 | 17 | 12 | 11 | 11 | 4 | 16 | 30 | 19 | 26 | 29 | 30 | 20 | 6 | 42 | 37 | 3 | 8 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | NE 8 | NE 8 | NE 7 | ENE 7 | ENE 7 | ENE 7 | E 6 | ENE 6 | ENE 7 | ENE 6 | ENE 7 | ENE 6 | E 6 | E 8 | E 8 |
516 | 501 | 501 | 373 | 327 | 258 | 276 | 200 | 223 | 153 | 102 | 196 | 130 | 123 | 223 | 127 | 120 | 62 | 91 | 186 | 300 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 50 | 52 | 50 | 50 | 44 | 15 | 15 | 44 | 44 | 44 | 44 | 26 | 44 | 44 | 44 | 44 | 44 | 9 | 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.










