Surf Forecasts:
Chinamans Hat/Mokolii surf forecast from 21 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 2AM (local time) - 6.5ft (2.0m), 7s period, E swell with 393 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 2.0m 7s and forecast to arrive on Sunday (Aug 23) 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 0.6m 17s period and expected on Thursday (Aug 27) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 23rd Aug) | 6.5ft (2.0m) 7s |
Table - best surf conditions forecast for Chinamans Hat/Mokolii over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the menu for the next couple of weeks.
Right off the bat, I gotta be straight with you – it’s grim. The forecast kicks off Friday 21 August and we’re looking at a solid run of poor conditions that stretches all the way through to the end of the month. The wind is a constant problem, blowing cross-on or cross-shore nearly every day, and the swell is short-period, messy stuff. It’s not giving us a single decent window for a clean paddle out. The water temp is sitting at a pretty normal 80° for the time of year, so no surprises there, but you won’t be feeling it anyway because you’ll be watching from the sand.
The first real glimmer of hope doesn’t show up until Wednesday 2 September. Even then, it’s only marginal. Chinamans Hat/Mokolii (a point break that’s inconsistent and rarely breaks) is seeing some ENE swell around 7 ft with a 9-second period, but the wind is still cross-shore and there’s a risk of thunderstorms. The combined energy is moderate at 649, but it’s just not clean enough to get excited about. Thursday 3 September and Friday 4 September are more of the same – marginal surf with cross-shore winds and a bit of chop.
Now, here’s where it gets a little interesting. Saturday 5 September finally shows some promise. The morning brings a gentle cross-shore breeze, and the swell is 5 ft from the ENE with a much longer period of 12 seconds. That’s a proper groundswell, which will give some shape and power, and the combined energy is moderate at 559. The wind is light, so it could be glassy. This is likely the best on offer for the whole outlook. It’s a point break, so that long period won’t be a problem. Still, Chinamans is inconsistent, so don’t count on it until you’re in the water. The afternoon holds up similarly with a 5 ft, 11-second swell.
The thing is, this spot is rarely breaking, so the fact that it’s even showing up on the radar is a small win. But for the first week and a half, there’s just nothing doing. The blank run is real, but it’s normal for this area. Forecasts can change, so keep an eye on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the ENE by Sat night). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Mon morning. Warm (max 27°C on Mon afternoon, min 24°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | NE 7 | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 6 | E 6 | ENE 6 | ENE 6 | E 6 | E 7 | E 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 5 | E 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 109 | 127 | 181 | 212 | 278 | 393 | 352 | 245 | 225 | 135 | 198 | 239 | 311 | 270 | 253 | 218 | 153 | 135 | 114 | 72 | 127 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on |
High Tide | 11:59AM0.71m | 12:31PM0.75m | 9:54PM0.34m | 12:58PM0.78m | 11:13PM0.38m | 1:22PM0.81m | 11:54PM0.43m | 1:44PM0.83m | 00:31AM0.47m | 2:05PM0.84m | 1:09AM0.51m | 2:24PM0.83m | 1:49AM0.55m | ||||||||
Low Tide | 4:07AM0.11m | 9:09PM0.30m | 5:10AM0.07m | 8:15PM0.30m | 5:54AM0.03m | 8:12PM0.28m | 6:30AM-0.00m | 8:23PM0.26m | 7:03AM-0.02m | 8:40PM0.23m | 7:36AM-0.00m | 8:59PM0.20m | |||||||||
 |  |  | | |  | | | |  | | | | | |  | |  | | | | |
 | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — |
 | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | 1 | 1 | 1 | — |
Temp °C | 27 | 28 | 27 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 30 | 31 | 29 | 27 | 28 | 25 | 26 | 26 | 25 | 26 | 28 | 27 | 26 | 26 | 25 | 24 | 25 | 24 | 26 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | NE 7 | ESE 8 | SSW 16 | SSE 15 | SSW 16 | WNW 12 | SSE 13 | NW 12 | NW 11 | NW 12 | NW 11 | SSW 13 | WNW 11 | SSW 16 | NW 10 | SSW 14 | S 18 | S 19 | S 17 | S 17 | S 16 |
| kJ | 109 | 7 | 50 | 42 | 25 | 29 | 35 | 35 | 33 | 35 | 19 | 16 | 12 | 25 | 17 | 41 | 98 | 181 | 214 | 142 | 121 |
Swell 2 Height (m) Direction Period (s) | SSW 17 | SSW 16 | S 13 | SSW 16 | S 12 | SSE 14 | NW 11 | SSW 15 | SSE 13 | SSE 12 | SSW 13 | SSE 12 | SSW 12 | WNW 10 | SSW 14 | S 18 | SSW 13 | SSW 13 | N 8 | E 17 | E 16 |
| kJ | 29 | 25 | 14 | 26 | 12 | 41 | 33 | 22 | 34 | 31 | 35 | 14 | 15 | 11 | 21 | 58 | 34 | 17 | 12 | 52 | 127 |
Swell 3 Height (m) Direction Period (s) | S 15 | SSE 8 | SSE 16 | S 8 | SSE 15 | SSW 16 | SSW 16 | SSE 13 | SSW 14 | SSW 14 | SSE 12 | WNW 10 | SSE 11 | SSW 12 | S 18 | WNW 10 | NW 10 | WNW 10 | SSW 12 | SSW 12 | NNE 8 |
| kJ | 17 | 7 | 24 | 1 | 21 | 24 | 24 | 17 | 21 | 19 | 14 | 10 | 13 | 14 | 25 | 11 | 17 | 10 | 14 | 14 | 21 |
Wind waves Height (m) Direction Period (s) | — | ENE 7 | ENE 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 6 | E 6 | ENE 6 | ENE 6 | E 6 | E 7 | E 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 5 | ENE 6 |
| kJ | — | 127 | 181 | 212 | 278 | 393 | 352 | 245 | 225 | 135 | 198 | 239 | 311 | 270 | 253 | 218 | 153 | 135 | 114 | 72 | 104 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 25 | 24 | 28 | 37 | 38 | 37 | 37 | 37 | 28 | 37 | 28 | 35 | 35 | 29 | 29 | 38 | 29 | 35 | 35 | 35 | 35 |
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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