
Surf Forecasts:
Keaulanas surf forecast from 17 Jul 2026:
- Best quality surf: Friday 17 Jul, 5AM (local time) - 2ft (0.6m), 14s period, W swell with offshore winds.
- Most powerful swell: Thursday 23 Jul, 8PM (local time) - 3.5ft (1.0m), 19s period, SSW swell with 708 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 5AM (local time) - 2ft (0.6m), 14s period with W 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 Friday (Jul 17) at 5AM. The primary swell is predicted to be 0.6m 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 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 4s period and expected on Thursday (Jul 23) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 17th Jul) | 2ft (0.6m) 14s |
| Best Surf | 5AM (Fri 17th Jul) | 2ft (0.6m) 14s |
| Most Powerful | 8PM (Thu 23rd Jul) | 3.5ft (1.0m) 19s |
Table - best surf conditions forecast for Keaulanas over the next 16 days.
The Lowdown
Alright crew, Rusty here. Let’s break down what’s up at Keaulanas for the next couple of weeks.
Honestly, don’t expect much right away. The first few days are weak and small. Thursday the 16th kicks off with a tiny 2ft west swell, but the energy is low (352), and the east breeze is cross-off, so it’s clean but not worth paddling out for. The water is 80°, which is dead average for this time of year.
Friday the 17th morning is a 2ft south-southwest groundswell, with a long 16-second period that gives it some shape, but it’s still too small to get excited about. The cross-off breeze keeps it tidy. The best of this first week is a tough call, but Monday the 20th afternoon is the pick. A 3ft south swell, 16-second period, with a light east breeze (10 km/h) makes for clean, lined-up waves, and the energy is moderate (406). It’s small, but it’s the most promising slot before things get going.
Late in the second week, we get a pulse of longer-period energy. Wednesday the 22nd has a 2ft south-southwest swell with a very long 24-second period, pushing moderate energy (647). The wind is cross-off, so it’s clean, but that long period might make it break a bit straight at this beach and reef setup. It’s for the patient surfer.
The real standout, if you can wait, is Thursday the 24th afternoon. The swell climbs to 2ft from the south, with a 21-second period, and the energy is strong (1011). The wind swings offshore from the east-northeast at 30 km/h, giving us fresh offshore and clean conditions. This is the best session on offer, but it’s a long-range call, so stay flexible.
The following week keeps the pattern going. Sunday the 26th morning has a 4ft south-southwest swell, 19-second period, strong energy (931), and offshore winds. It’s a bit bigger, but still fine for intermediates. Monday the 27th and Tuesday the 28th also offer clean offshore winds, with the 28th morning being absolutely glassy (5 km/h from the northeast). That’s a rare gem for Keaulanas, with a 2ft south-southwest swell. Small, but glassy makes it a treat.
From the 29th onwards, it fades to weak and small, with energy dropping below 200 and wave heights shrinking to 2ft or less. The last few days of the month are poor, with no real punch.
So, if you’re picking your spots, the standout is Thursday the 24th afternoon with the offshore wind and strong energy, then the glassy morning of Tuesday the 28th. The rest is a waiting game.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Thu afternoon, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sun afternoon, min 24°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||
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) | W 14 | SW 14 | SSW 16 | SSW 16 | SSW 14 | SSW 13 | 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 |
Wave Graph | ||||||||||||||||||||
203 | 211 | 171 | 196 | 189 | 141 | 210 | 121 | 125 | 126 | 154 | 193 | 325 | 163 | 329 | 298 | 273 | 437 | 426 | 480 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 5:42PM0.73m | 6:12AM0.34m | 6:15PM0.65m | 7:16AM0.38m | 6:44PM0.56m | 8:28AM0.42m | 7:08PM0.48m | 9:44AM0.47m | 7:23PM0.40m | 10:58AM0.52m | 12:00PM0.57m | |||||||||
Low Tide | 00:52AM0.10m | 11:17AM0.14m | 1:21AM0.10m | 12:14PM0.22m | 1:50AM0.10m | 1:25PM0.30m | 2:19AM0.10m | 3:17PM0.35m | 2:50AM0.11m | 3:27AM0.11m | 4:14AM0.11m | |||||||||
— | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | |
7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 25 | 27 | 28 | 26 | 27 | 27 | 25 | 26 | 27 | 25 | 27 | 27 | 26 | 27 | 27 | 25 | 27 | 28 | 25 |
Feels °C | 28 | 25 | 28 | 28 | 26 | 26 | 26 | 24 | 26 | 27 | 24 | 27 | 27 | 26 | 27 | 26 | 25 | 26 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | NE 7 | NE 7 | SSW 14 | SSW 13 | SSW 14 | SSW 12 | SSW 13 | S 13 | NE 7 | S 16 | S 16 | NE 7 | S 14 | S 14 | S 13 | S 11 | SSW 23 | S 13 |
59 | 55 | 59 | 57 | 189 | 141 | 210 | 121 | 125 | 126 | 65 | 193 | 325 | 38 | 329 | 298 | 273 | 82 | 426 | 206 | |
Swell 2 Height (m) Direction Period (s) | W 14 | SW 14 | W 14 | SSW 16 | W 13 | WNW 13 | NNE 8 | SE 9 | SE 9 | S 19 | SSW 11 | SSW 12 | SW 18 | S 13 | NE 7 | SSW 16 | SSW 26 | S 13 | S 10 | SSW 22 |
203 | 211 | 144 | 196 | 90 | 57 | 37 | 21 | 20 | 110 | 71 | 78 | 81 | 121 | 37 | 103 | 224 | 128 | 76 | 480 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | W 14 | SSW 16 | W 14 | SW 15 | SW 15 | WNW 13 | WNW 12 | WNW 12 | SE 6 | S 18 | SW 18 | SSE 5 | S 15 | SW 17 | SSE 6 | SW 15 | SSW 24 | S 13 | SSW 17 |
149 | 200 | 171 | 140 | 58 | 54 | 57 | 51 | 28 | 9 | 154 | 83 | 2 | 163 | 73 | 4 | 60 | 437 | 125 | 202 | |
Wind waves Height (m) Direction Period (s) | — | — | E 6 | ENE 6 | NE 7 | NE 7 | ENE 7 | NE 7 | NE 7 | NE 7 | E 8 | NE 7 | NE 7 | E 8 | ENE 7 | NE 7 | NE 7 | NE 7 | ENE 7 | NE 7 |
— | — | 49 | 66 | 65 | 55 | 84 | 84 | 63 | 75 | 130 | 64 | 64 | 72 | 67 | 57 | 55 | 47 | 57 | 44 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2 | 2 | 0 | 2 | 2 | 5 | 5 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 2 | 2 | 2 | 2 | 2 |
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.










