
Surf Forecasts:
Makapu'u surf forecast from 15 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 5PM (local time) - 7ft (2.2m), 9s period, ENE swell with 802 kJ wave energy.
Best Forecast Surf Conditions for Makapu'u this week:
The most powerful waves expected at Makapu'u in the next 16 days are 2.2m 9s and forecast to arrive on Thursday (Sep 17) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 18s period and expected on Wednesday (Sep 16) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Thu 17th Sep) | 7ft (2.2m) 9s |
Table - best surf conditions forecast for Makapu'u over the next 16 days.
The Lowdown
Alright, let me tell you straight up: the outlook for Makapu'u over the next two weeks is pretty grim. There's not a single session worth paddling out for. The whole 16-day period is basically a write-off for decent surf.
Right from Tuesday the 15th of September, it's onshore wind from the ENE, blowing around 12 - 18 mph, and the swell – around 3 ft from the NE with a short 8-second period – is messy. The combined energy is weak (141), and the wind is just ruining any chance of a clean face. That same story just keeps repeating.
We get a bit of a bump in size, with waves around 7 ft on Thursday the 17th, but it’s from the ENE and the wind is up to 22 mph. The energy jumps up to moderate (665), but with that much wind and a 7-second period, it's just a blown-out mess. This becomes a pattern: solid swell sizes, but always with a strong, onshore wind tearing it apart.
Even when a little south-southwest groundswell shows up with a long 18-second period on Wednesday the 16th, packing a punch with 968 in energy, the wind is still howling onshore at 18 mph. That kind of long-period energy needs a sheltered point or reef, but with this wind, it's just going to be bumpy and frustrating.
The wind doesn't let up. From the 21st of September onwards, it's a strong breeze at 25 mph or more, making everything ugly. We see the swell mix in some E and SSW directions, and the energy stays moderate to strong, like the 23rd of September with 8 ft from the east and over 1000 in energy, but the wind is relentless.
For a reef break that's exposed like Makapu'u, this is just no good. There are no standouts, no hidden windows of clean conditions. It’s a flat, blown-out run for the entire forecast. For a spot that can be fairly consistent, this kind of blank period is a real bummer.
Stay patient, keep checking the charts. Sometimes it clears up quicker than you think. But for now, leave the boards in the car.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Tue morning, min 25°C on Mon night). Mainly fresh winds. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Thu night. Warm (max 27°C on Fri morning, min 25°C on Sat night). Mainly strong winds. | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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) | NE 8 | NE 8 | NE 8 | SSW 19 | E 10 | SSW 18 | SSW 17 | ENE 7 | ENE 9 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | ENE 8 | E 8 | E 7 | ENE 8 | ENE 7 |
Wave Graph | |||||||||||||||||||
68 | 75 | 99 | 470 | 100 | 541 | 516 | 516 | 802 | 676 | 622 | 580 | 539 | 437 | 485 | 522 | 480 | 427 | 547 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on |
High Tide | 5:47AM0.53m | 3:20PM0.41m | 6:53AM0.51m | 2:37PM0.40m | 8:54AM0.49m | 10:52AM0.51m | 11:47AM0.54m | 12:22PM0.57m | 11:21PM0.27m | ||||||||||
Low Tide | 10:11PM0.03m | 11:26AM0.30m | 10:35PM0.05m | 12:57PM0.34m | 11:02PM0.07m | 11:41PM0.10m | 1:18AM0.13m | 3:40AM0.12m | 7:51PM0.20m | 4:53AM0.10m | |||||||||
— | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
6:34 | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:29 | — | |
mm | — | — | — | — | — | — | — | — | — | 11 | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 26 |
Feels °C | 25 | 27 | 26 | 26 | 25 | 25 | 25 | 26 | 24 | 26 | 25 | 24 | 24 | 25 | 26 | 24 | 24 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | NE 8 | SW 20 | SW 20 | SSW 19 | SW 18 | SSW 18 | SSW 17 | SW 16 | SW 16 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 |
65 | 392 | 388 | 470 | 455 | 541 | 516 | 261 | 258 | 644 | 622 | 580 | 539 | 382 | 387 | 350 | 231 | 296 | 346 | |
Swell 2 Height (m) Direction Period (s) | SW 21 | ENE 8 | E 12 | NE 7 | E 10 | SW 11 | E 10 | SSW 20 | SSW 19 | SSE 10 | SSE 9 | SSE 7 | SSE 6 | SSW 18 | S 18 | SW 16 | SSW 15 | SW 15 | SW 15 |
224 | 20 | 66 | 56 | 100 | 31 | 125 | 149 | 210 | 9 | 7 | 16 | 7 | 108 | 99 | 122 | 154 | 104 | 33 | |
Swell 3 Height (m) Direction Period (s) | SSW 13 | E 12 | SW 12 | E 11 | SW 12 | WSW 8 | SSW 11 | SW 11 | SSW 10 | WSW 8 | W 9 | WSW 9 | S 20 | SSE 6 | SSE 6 | SSW 14 | SSE 8 | SSE 12 | NNW 10 |
68 | 46 | 38 | 58 | 35 | 7 | 12 | 18 | 10 | 7 | 2 | 8 | 30 | 7 | 7 | 37 | 6 | 14 | 11 | |
Wind waves Height (m) Direction Period (s) | ENE 4 | NE 8 | NE 8 | E 5 | NE 6 | ENE 10 | NE 6 | ENE 7 | ENE 9 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 7 | ENE 8 | ENE 7 |
17 | 75 | 99 | 47 | 69 | 427 | 196 | 516 | 802 | 676 | 520 | 509 | 427 | 437 | 485 | 522 | 480 | 427 | 547 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 18 | 18 | 18 | 18 | 49 | 49 | 49 | 49 | 55 | 20 | 50 | 55 | 49 | 49 | 50 | 49 | 49 | 55 | 49 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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Information about the Makapu'u Surf forecast
The above surf forecast table for Makapu'u provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Makapu'u can be found by selecting the local surf guide option on the grey menu. Our Makapu'u 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 (Makapu'u) 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 Makapu'u 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.
Makapu'u is 13 km (8 miles) from the city of 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.










