Surf Forecasts:
Keaulanas surf forecast from 19 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 5AM (local time) - 3ft (0.9m), 13s period, S swell with offshore winds.
- Most powerful swell: Thursday 23 Jul, 11PM (local time) - 3.5ft (1.0m), 19s period, SSW swell with 679 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 8PM (local time) - 2.5ft (0.7m), 14s period with SSW swell.
Best Forecast Surf Conditions for Keaulanas this week:
The surf forecast for Keaulanas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jul 18) at 8PM. The primary swell is predicted to be 0.7m and 14s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Keaulanas in the next 16 days are 1.0m 19s and forecast to arrive on Thursday (Jul 23) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 7s period and expected on Saturday (Jul 25) at 5AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 18th Jul) | 2.5ft (0.7m) 14s |
| Best Surf | 5AM (Wed 22nd Jul) | 3ft (0.9m) 13s |
| Most Powerful | 11PM (Thu 23rd Jul) | 3.5ft (1.0m) 19s |
Table - best surf conditions forecast for Keaulanas over the next 16 days.
The Lowdown
Alright, Rusty here, givin’ you the scoop in feet and miles per hour.
It’s a slow start, fellas. The next few days have small waves and the wind is mostly cross-off, so not much to get excited about.
The real window opens up on Monday, July 20th. That morning we got a 2ft south swell with a 16-second period, and the energy is building to a moderate 397. The wind is a gentle cross-off, keepin’ things clean. Keaulanas (beach and reef) is consistent, and this is where it starts to get good. The afternoon gets even better as the wind goes offshore, the swell bumps to 3ft from the south, and the energy hits 416. That’s the best of the early run.
Tuesday, July 21st keeps the same feel: 3ft south swell, 14-second period, light cross-off wind in the morning. Water temp is about 80°F, which is pretty normal for this time of year. Watch for crowds, they’re possible.
The big standout is Friday, July 24th. The morning has offshore wind, a 2ft SW swell with an 18-second period, and the energy is strong at 560. The afternoon is even better with a 3ft SW swell and energy at 861. That’s the best swell of the whole run – clean, solid, and long-period groundswell. It’s gonna be a beauty.
Sunday, July 26th is another one to circle. Gentle offshore wind in the morning, 3ft SW swell, energy at 611. Very good conditions.
After that, into late July and early August, the swell drops to 2ft to 3ft, but the wind stays offshore, keepin’ it clean. The glassy conditions on Thursday, July 30th are a special thing – no wind, just a 2ft south swell. That’s a rare treat.
So, the best days are Friday, July 24th and Sunday, July 26th. Don’t miss ‘em.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat afternoon, min 24°C on Sat night). Mainly fresh winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Tue afternoon. Warm (max 27°C on Tue afternoon, min 24°C on Wed night). Mainly fresh winds. | |||||||||||||||||||
Sat 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||
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) | SSW 14 | SSW 12 | SSW 13 | S 13 | S 18 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 | SSW 24 | SSW 23 | SSW 22 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 210 | 121 | 125 | 126 | 154 | 193 | 325 | 163 | 329 | 311 | 277 | 437 | 426 | 480 | 528 | 395 | 616 | 329 | 428 | 298 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | off |
High Tide | 6:44PM0.56m | 8:28AM0.42m | 7:08PM0.48m | 9:44AM0.47m | 7:23PM0.40m | 10:58AM0.52m | 12:00PM0.57m | 12:51PM0.61m | 1:33PM0.64m | 00:26AM0.22m | ||||||||||
Low Tide | 1:50AM0.10m | 1:25PM0.30m | 2:19AM0.10m | 3:17PM0.35m | 2:50AM0.11m | 3:27AM0.11m | 4:14AM0.11m | 5:08AM0.10m | 9:51PM0.20m | |||||||||||
 |  | |  | | | | | |  |  | | | | | | | | | | |
 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 25 |
Feels °C | 25 | 24 | 26 | 25 | 24 | 28 | 26 | 25 | 28 | 26 | 24 | 25 | 26 | 24 | 23 | 24 | 24 | 24 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 12 | SSW 13 | S 13 | NE 7 | S 16 | S 16 | S 13 | S 14 | S 14 | S 13 | S 13 | SSW 23 | S 13 | SSW 20 | SSW 20 | SSW 18 | S 12 | SSW 17 | NE 7 |
| kJ | 210 | 121 | 125 | 126 | 65 | 193 | 325 | 121 | 329 | 311 | 277 | 277 | 426 | 206 | 528 | 395 | 616 | 187 | 428 | 140 |
Swell 2 Height (m) Direction Period (s) | WNW 13 | SSE 9 | SE 6 | S 19 | SSW 11 | S 12 | SW 18 | S 15 | SW 17 | SSW 16 | SSW 26 | SSW 24 | S 13 | SSW 22 | S 12 | S 11 | S 11 | SSW 18 | S 12 | SSW 16 |
| kJ | 57 | 31 | 9 | 110 | 71 | 70 | 80 | 163 | 73 | 103 | 224 | 437 | 125 | 480 | 134 | 89 | 55 | 329 | 102 | 298 |
Swell 3 Height (m) Direction Period (s) | SE 8 | WNW 12 | WNW 12 | SE 6 | S 18 | SW 18 | W 12 | SSW 16 | SSE 5 | SSE 6 | SW 15 | SW 17 | S 10 | SSW 18 | SSW 16 | SSW 16 | S 13 | SSW 15 | S 21 | S 20 |
| kJ | 18 | 51 | 28 | 9 | 154 | 83 | 11 | 105 | 3 | 4 | 60 | 143 | 76 | 204 | 100 | 173 | 85 | 88 | 229 | 296 |
Wind waves Height (m) Direction Period (s) | ENE 7 | NE 7 | NE 7 | NE 6 | — | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | ENE 4 | ENE 7 | ENE 6 | ENE 7 | ENE 7 | NE 7 | NE 7 | E 8 |
| kJ | 111 | 84 | 73 | 54 | — | 71 | 102 | 55 | 44 | 67 | 65 | 44 | 37 | 78 | 69 | 138 | 93 | 136 | 163 | 283 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 5 | 6 | 0 | 2 | 6 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 5 | 2 | 5 | 14 | 2 | 0 | 167 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Keaulanas Surf forecast
The above surf forecast table for Keaulanas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Keaulanas can be found by selecting the local surf guide option on the grey menu. Our Keaulanas 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 (Keaulanas) 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 Keaulanas 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.
Keaulanas is 7 km (4 miles) from Makakilo City. If you plan a vacation in Oahu, look for hotels and other accommodation in Makakilo City. Makakilo City has rooms for a wide range of budgets as well as car hire and transport links.
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