Surf Forecasts:
Chinamans Hat/Mokolii surf forecast from 16 Aug 2026:
- Most powerful swell: Sunday 16 Aug, 2AM (local time) - 15ft (4.5m), 10s period, E swell with 3,370 kJ wave energy.
Best Forecast Surf Conditions for Chinamans Hat/Mokolii this week:
The most powerful waves expected at Chinamans Hat/Mokolii in the next 16 days are 4.5m 10s and forecast to arrive on Sunday (Aug 16) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 10s period and expected on Sunday (Aug 16) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 16th Aug) | 15ft (4.5m) 10s |
Table - best surf conditions forecast for Chinamans Hat/Mokolii over the next 16 days.
The Lowdown
Alright folks, let's be straight with you. The next stretch at Chinamans Hat/Mokolii is looking mostly like a right-off for a proper surf. We've got a long run of poor conditions, so don't get your hopes up for much until we get to the back end of this forecast.
We kick things off this Saturday afternoon, the 15th, with a real mess. A strong cross-onshore breeze at 28 mph and the chance of a thunderstorm. The swell is up at 13 feet from the ENE, but it's a short, wind-blown 9-second period. It's just all chop and no shape. The combined energy is a hefty 2753, but that's nothing but chaos with that wind. This is a day for the kiteboarders, not the paddle surfers.
The next several days are a write-off. The wind stays onshore or cross-shore, and the swell drops off. By Monday the 17th, we're looking at about 5 feet, but it's still messy and choppy. This trend just continues on through the 28th of August. We're talking over a week of waves between 2 feet and 7 feet, all of it short-period, wind-driven junk with an unfavourable cross-onshore wind. The water's warm, at 81°, which is normal for the season, but that's where the good news ends.
But hold on, there's a glimmer of hope right at the end. On Saturday the 29th, we finally see a long 15-second period, but the swell is tiny, only up to 3 feet. The energy is moderate, and the wind is light. It's marginal, but there's a pulse. Then, Sunday the 30th is the one to watch. We're looking at a 6-foot swell from the east with that same long 15-second period. The energy jumps up to a strong 1537, and the morning wind is light and cross-shore. This is a proper groundswell, and while the size isn't huge, the quality could be excellent.
Here's the thing about this long-period swell at a point break like this: it's exactly what this spot wants. It won't close out like a beachie; it should hold its shape. That Sunday morning is your best, and really only, shot at a clean session for the entire forecast. It's a while away, so keep the expectations tempered, but mark it on the calendar. This wave is inconsistent, so when it does fire, it can be worth the wait, and you can bet there will be a few others there with the same idea.
Stay patient and keep an eye on that last Sunday.
Rusty.
Short Range ForecastHeavy rain (total 59mm), heaviest during Sun morning. Warm (max 26°C on Sat afternoon, min 24°C on Mon night). Winds decreasing (strong winds from the ENE on Sat night, light winds from the E by Tue morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Tue afternoon, min 24°C on Tue night). Wind will be generally light. | |||||||||||||||||||
Sat 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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 9 | E 10 | E 9 | E 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 5 | E 8 | ENE 8 | ENE 8 | E 8 | ENE 7 | E 7 | E 8 | NNE 6 | NE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 2746 | 3370 | 1417 | 887 | 438 | 292 | 245 | 168 | 178 | 112 | 102 | 140 | 183 | 155 | 72 | 118 | 53 | 33 | 26 | 59 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:57PM0.74m | 4:47AM0.57m | 4:07PM0.66m | 5:54AM0.57m | 4:07PM0.60m | 7:29AM0.57m | 3:44PM0.55m | 9:50AM0.60m | 11:15AM0.66m | 11:59AM0.71m | ||||||||||
Low Tide | 10:50PM0.12m | 10:32AM0.25m | 11:16PM0.10m | 11:16AM0.36m | 11:43PM0.09m | 12:18PM0.44m | 00:17AM0.10m | 1:06AM0.12m | 2:32AM0.12m | 4:07AM0.11m | ||||||||||
 |  | |  | |  | |  | | | | | |  | |  | | | | | |
 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:58 | — | — | 6:57 | — |
mm | 2 | 8 | 35 | 10 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 23 | 23 | 22 | 26 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 28 | 28 | 27 | 28 | 28 | 27 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 14 | SSE 10 | SSE 8 | ENE 8 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | NE 7 | S 12 | E 8 | NE 6 | E 7 | E 7 | NNE 6 | NNE 6 | NE 7 |
| kJ | 31 | 63 | 209 | 112 | 438 | 103 | 65 | 55 | 54 | 30 | 29 | 17 | 11 | 80 | 40 | 67 | 53 | 21 | 26 | 59 |
Swell 2 Height (m) Direction Period (s) | NNW 9 | NNW 9 | S 16 | S 16 | S 7 | SSE 6 | S 6 | E 9 | SW 17 | NE 8 | N 8 | NNE 6 | SSE 9 | NE 6 | SSW 18 | NNE 6 | NNE 6 | ENE 7 | E 7 | ESE 8 |
| kJ | 7 | 8 | 83 | 46 | 25 | 7 | 6 | 15 | 11 | 9 | 1 | 8 | 8 | 40 | 31 | 35 | 34 | 26 | 24 | 24 |
Swell 3 Height (m) Direction Period (s) | S 16 | S 18 | NNW 8 | S 13 | S 13 | N 8 | N 7 | S 5 | N 7 | SE 6 | SW 18 | S 12 | SW 16 | S 12 | S 11 | SSW 18 | SSW 17 | E 8 | E 8 | SSW 16 |
| kJ | 5 | 25 | 7 | 30 | 56 | 1 | 1 | 1 | 1 | 1 | 12 | 11 | 11 | 11 | 10 | 30 | 27 | 33 | 12 | 50 |
Wind waves Height (m) Direction Period (s) | ENE 9 | E 10 | E 9 | E 8 | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 5 | E 8 | ENE 8 | ENE 8 | E 8 | ENE 7 | — | — | — | — |
| kJ | 2746 | 3370 | 1417 | 887 | — | 292 | 245 | 168 | 178 | 112 | 102 | 140 | 183 | 155 | 72 | 118 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 193 | 168 | 69 | 27 | 24 | 35 | 35 | 25 | 35 | 25 | 25 | 28 | 25 | 25 | 24 | 25 | 24 | 24 | 24 | 24 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Chinamans Hat/Mokolii Surf forecast
The above surf forecast table for Chinamans Hat/Mokolii provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Chinamans Hat/Mokolii can be found by selecting the local surf guide option on the grey menu. Our Chinamans Hat/Mokolii 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 (Chinamans Hat/Mokolii) 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 Chinamans Hat/Mokolii 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.
Chinamans Hat/Mokolii is 11 km (7 miles) from Kane'ohe. If you plan a vacation in Oahu, look for hotels and other accommodation in Kane'ohe. Kane'ohe has rooms for a wide range of budgets as well as car hire and transport links.
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