Surf Forecasts:
Makapu'u surf forecast from 8 Aug 2026:
- Most powerful swell: Saturday 15 Aug, 8AM (local time) - 20ft (6.0m), 14s period, E swell with 14,041 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 6.0m 14s and forecast to arrive on Saturday (Aug 15) 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 0.5m 19s period and expected on Saturday (Aug 08) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Sat 15th Aug) | 20ft (6.0m) 14s |
Table - best surf conditions forecast for Makapu'u over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s on the table for the next couple of weeks.
Well, I gotta be straight with you – this is a rough run. We’re looking at a solid 16-day window, but the surf is gonna be a frustrating mess for most of it. The wind is just relentless, blowing onshore like it’s got a personal grudge against us. The first real recommendation doesn’t even pop up until we get to the 15th of August, and even then, it’s not what you’d call a good wave. Before that, from now through the 14th, it’s a whole lot of poor surf conditions with fresh to strong breezes ruining everything. The combined swell energy is mostly moderate (between 252 and 1645), but it’s all wind-affected junk.
The only day that *might* get your heart pumping is Saturday the 15th of August. But here’s the catch – it’s gonna be dangerously big. We’re talking a massive 23ft to 36ft swell from the east, with a period of 13 to 14 seconds. The combined energy hits a staggering 18,436 in the morning, and then 45,697 in the afternoon – that’s an absolute freight train. The wind is a bit better, easing to a moderate breeze, but it’s cross-onshore, making it choppy. This is for experts only, and honestly, at that size, it’s more of a survival mission than a surf session. The setup looks more interesting for kite surfing than paddle surfing.
After that, we’re back to onshore wind and poor conditions through the rest of the second week. The swell drops back down, but the wind never really lets up. There’s a little spike of 6ft around the 23rd of August, but it’s still onshore and messy. There’s just no standout clean day here. We’re gonna have to wait for a change in the weather pattern.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Sat morning, min 25°C on Sat morning). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Tue morning, min 25°C on Tue afternoon). Mainly strong winds. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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 6 | ENE 7 | ENE 6 | SSW 17 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | SSW 14 | S 20 | S 18 | S 18 | S 16 | S 16 | S 15 | ENE 7 | ENE 8 | ENE 8 | ENE 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 165 | 189 | 145 | 246 | 296 | 392 | 292 | 292 | 355 | 238 | 269 | 268 | 509 | 613 | 520 | 501 | 653 | 621 | 883 | 1074 | 9250 |
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 | on | on |
High Tide | 1:01PM0.68m | 1:40PM0.72m | 11:41PM0.30m | 2:17PM0.74m | 00:48AM0.34m | 2:50PM0.74m | 1:43AM0.37m | 3:21PM0.72m | 2:36AM0.40m | 3:49PM0.69m | 3:28AM0.42m | 4:12PM0.63m | 4:22AM0.43m | ||||||||
Low Tide | 5:29AM-0.07m | 8:45PM0.24m | 6:24AM-0.09m | 8:55PM0.22m | 7:12AM-0.10m | 9:16PM0.20m | 7:57AM-0.08m | 9:41PM0.17m | 8:39AM-0.03m | 10:07PM0.14m | 9:20AM0.03m | 10:33PM0.12m | |||||||||
 | |  |  | |  | | | | | | | | | | | | | | | | |
 | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | — | 7:02 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 26 | 26 |
Feels °C | 24 | 22 | 23 | 25 | 24 | 23 | 25 | 24 | 24 | 25 | 23 | 23 | 23 | 22 | 23 | 23 | 21 | 21 | 20 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 18 | E 7 | SSW 17 | SSW 12 | S 16 | SSW 15 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 14 |
| kJ | 164 | 154 | 107 | 246 | 86 | 131 | 184 | 191 | 186 | 165 | 269 | 243 | 509 | 613 | 520 | 501 | 653 | 537 | 416 | 333 | 236 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 14 | NE 7 | SSW 13 | SSW 16 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSE 9 | S 20 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | W 12 | W 11 | W 12 | ESE 12 | SSW 18 |
| kJ | 67 | 63 | 115 | 96 | 102 | 57 | 56 | 50 | 23 | 43 | 15 | 268 | 218 | 218 | 173 | 113 | 11 | 10 | 11 | 208 | 30 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SW 12 | SSW 13 | NE 9 | SSW 18 | NNW 10 | NNW 9 | NNW 9 | NNW 8 | NNW 8 | S 21 | W 13 | W 13 | W 12 | W 12 | W 12 | SW 19 | SW 18 | SW 18 | SSW 18 | W 11 |
| kJ | 71 | 39 | 99 | 13 | 102 | 33 | 28 | 15 | 13 | 11 | 79 | 13 | 13 | 11 | 11 | 11 | 14 | 13 | 12 | 30 | 9 |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 7 | ENE 6 | ENE 7 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 | ENE 7 | E 6 | ENE 6 | ENE 6 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 15 |
| kJ | 165 | 189 | 145 | 245 | 296 | 392 | 292 | 292 | 355 | 238 | 215 | 239 | 237 | 201 | 388 | 385 | 326 | 621 | 883 | 1074 | 9250 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 49 | 58 | 49 | 49 | 110 | 49 | 49 | 49 | 22 | 49 | 55 | 20 | 49 | 110 | 49 | 111 | 63 | 111 | 217 | 217 | 141 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.
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