Surf Forecasts:
Waimanalo surf forecast from 7 Jul 2026:
- Most powerful swell: Tuesday 7 Jul, 8AM (local time) - 8ft (2.5m), 8s period, ENE swell with 730 kJ wave energy.
Best Forecast Surf Conditions for Waimanalo this week:
The most powerful waves expected at Waimanalo in the next 16 days are 2.5m 8s and forecast to arrive on Tuesday (Jul 07) at 8AM. 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 Tuesday (Jul 07) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Tue 7th Jul) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Waimanalo over the next 16 days.
Updates in hr min s Forecast update imminent
Grab your board, but maybe leave it in the truck. The next couple of weeks are a tough watch for Waimanalo. We’ve got a constant stream of ENE swell running through the whole period, but the wind just won’t play ball. It’s hammering in from the same direction as the swell for day after day, turning what could be some fun-sized waves into a bumpy, blown-out mess. The water temp is sitting about average for this time of year, nothing unusual there.
Starting from Tuesday morning, July 7th, we’re looking at a punchy 8 ft swell from the ENE with a short, weak period of 8 seconds. The combined energy is moderate at 609, but that onshore wind is a solid 22 mph. That’s a no-go. This pattern sticks: Wednesday and Thursday see the swell drop a little to around 6 ft to 7 ft, but the wind stays strong and onshore or cross-onshore, making it lumpy and messy. Friday and Saturday aren’t any better – still 6 ft to 8 ft of short-period ENE swell and stiff onshore breeze.
We get a slight breather from around Sunday, July 12th, through to Tuesday, July 14th, where the wind eases a touch to a moderate breeze of 16 mph. The swell drops to 5 ft to 7 ft, still short period. The “poor surf conditions” tag doesn’t let up, though. It’s cleaner but still onshore, so the surface is just going to be bumpy and uninviting.
The second week drags on with the same story. From Wednesday, July 15th, through the weekend of July 18th and 19th, we see the swell pulse back up a bit — hitting 8 ft on Saturday, July 18th, with combined energy climbing into the strong range (768). That’s expert-only size anyway, and with a fresh onshore or cross-onshore wind, it’s going to be a washing machine. Kite surfers might get a kick out of this setup, but for paddle surfing, it’s a write-off.
The final run from Monday, July 20th, to Wednesday, July 22nd, sees the swell fade to 5 ft down to 2 ft. On the 21st and 22nd, the period jumps to 14 and 16 seconds, suggesting some long-period groundswell, but the size is tiny and the wind is still onshore. At that size and with that wind, it’s barely worth a paddle.
There isn’t a single standout here. The whole 16-day window is one long stretch of poor conditions. This is one of those times when it’s better to wait for a change in the forecast.
- Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Mon night. Warm (max 25°C on Tue morning, min 24°C on Mon night). Mainly strong winds. | Days 5-7 Weather SummaryLight rain (total 8mm), mostly falling on Thu night. Warm (max 25°C on Thu night, min 24°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Mon 13 | |||||||||||||||
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 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 532 | 606 | 493 | 542 | 400 | 417 | 469 | 456 | 417 | 485 | 353 | 425 | 495 | 597 | 475 | 435 | 489 | 596 | 639 | 451 | 400 |
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 | on | cross-on | on | on | on | on | on | on | on | on | cross-on | on | on |
High Tide | 10:04AM0.36m | 6:48PM0.45m | 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 | ||||||||||
Low Tide | 2:21AM0.07m | 1:09PM0.29m | 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 | ||||||||||
 |  |  |  | | | |  | | | | | | | | | | | | | | |
 | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — |
 | 7:16 | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 |
mm | 1 | — | — | — | — | — | 1 | 1 | — | 1 | 2 | 2 | 2 | 1 | — | — | — | — | 1 | — | — |
Temp °C | 24 | 25 | 24 | 24 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 |
Feels °C | 20 | 21 | 20 | 20 | 22 | 21 | 20 | 22 | 22 | 23 | 23 | 23 | 21 | 22 | 22 | 23 | 23 | 23 | 23 | 21 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | SSW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 15 |
| kJ | 71 | 70 | 66 | 63 | 36 | 35 | 34 | 30 | 27 | 11 | 24 | 12 | 11 | 11 | 30 | 48 | 41 | 40 | 39 | 36 | 21 |
Swell 2 Height (m) Direction Period (s) | S 18 | S 10 | S 10 | S 10 | S 18 | S 8 | S 9 | S 16 | S 8 | S 15 | SW 21 | SW 21 | SSW 19 | SSW 19 | S 12 | S 13 | S 13 | S 12 | SSE 12 | SSE 12 | SSE 12 |
| kJ | 6 | 2 | 2 | 2 | 6 | 1 | 2 | 5 | 1 | 4 | 18 | 17 | 37 | 34 | 11 | 13 | 13 | 11 | 14 | 14 | 13 |
Swell 3 Height (m) Direction Period (s) | NW 9 | NW 9 | NW 9 | — | — | S 18 | — | — | S 16 | S 23 | — | S 8 | S 15 | — | S 14 | — | W 13 | W 12 | SW 23 | S 20 | S 6 |
| kJ | 3 | 3 | 3 | — | — | 6 | — | — | 5 | 10 | — | 1 | 4 | — | 4 | — | 3 | 3 | 21 | 8 | 1 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 532 | 606 | 493 | 542 | 400 | 417 | 469 | 456 | 417 | 485 | 353 | 425 | 495 | 597 | 475 | 435 | 489 | 596 | 639 | 451 | 400 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 52 | 116 | 138 | 50 | 50 | 56 | 50 | 50 | 50 | 44 | 45 | 116 | 45 | 52 | 116 | 44 | 44 | 45 | 50 | 44 | 116 |
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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