Surf Forecasts:
Chinamans Hat/Mokolii surf forecast from 9 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 5PM (local time) - 6ft (1.8m), 11s period, ENE swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 5PM (local time) - 6ft (1.8m), 11s period, ENE swell with 759 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 5PM (local time) - 6ft (1.8m), 11s period with ENE swell.
Best Forecast Surf Conditions for Chinamans Hat/Mokolii this week:
The surf forecast for Chinamans Hat/Mokolii over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Sep 08) at 5PM. The primary swell is predicted to be 1.8m and 11s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Chinamans Hat/Mokolii in the next 16 days are 1.8m 11s and forecast to arrive on Tuesday (Sep 08) at 5PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 9s period and expected on Tuesday (Sep 08) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Tue 8th Sep) | 6ft (1.8m) 11s |
| Best Surf | 5PM (Tue 8th Sep) | 6ft (1.8m) 11s |
| Most Powerful | 5PM (Tue 8th Sep) | 6ft (1.8m) 11s |
Table - best surf conditions forecast for Chinamans Hat/Mokolii over the next 16 days.
The Lowdown
Alright, let’s get into it. This is Rusty, looking at the 16-day outlook for one spot that’s got a bit of promise early on, then a whole lot of nothing for ages.
The only real standout here is Chinamans Hat/Mokolii (Oahu). That Tuesday afternoon, September 8th, is where it’s at. We’ve got clean conditions – glassy, offshore wind from the SSW at 9 mph – and a solid 6 ft swell coming from the ENE with an 11-second period. That’s a nice, punchy groundswell, and with 856 units of combined swell energy (moderate energy), there’s some real push behind it. The water’s sitting at 80°, which is pretty much average for this time of year, so no surprises on that front. This is a point break that can handle that direction well, and with those offshore winds, you’re looking at some clean, lined-up waves. It’s an inconsistent spot, so when it’s on, you want to be there. It’s not a beginner wave at that size – 6 ft is getting into intermediate territory. Crowds are possible here, but on a Tuesday, you might get lucky.
Now, after that brief window of quality, things fall apart fast. From Wednesday morning, September 9th, all the way through to the end of the 16-day forecast on September 23rd, it’s a grim run. The wind switches to cross or cross-onshore, mostly from the east, and the swell drops off into weak, short-period junk. Even when the swell height bumps up again later – like around 5 ft to 6 ft – the period is a pitiful 6 to 9 seconds, and the winds are just ruining any chance of a clean wave. Combined swell energy is mostly in the low to mid hundreds, peaking around 567 units, but with that onshore chop, it’s just messy. This stretch is honestly more interesting for kite surfing than paddle surfing, given the consistent east wind and choppy conditions. For us surfers, it’s a write-off.
So, your one and only shot in this whole 16-day window is that Tuesday afternoon, September 8th, at Chinamans Hat. Get on it if you can, because after that, it’s a long, dry spell.
- Rusty
Short Range ForecastLight rain (total 6mm), mostly falling on Wed night. Warm (max 29°C on Tue afternoon, min 24°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Fri night. Warm (max 26°C on Fri afternoon, min 24°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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 11 | ENE 10 | ENE 9 | E 13 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 11 | E 11 | E 10 | ENE 10 | ENE 10 | NNE 9 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 759 | 378 | 211 | 168 | 208 | 294 | 240 | 158 | 89 | 286 | 221 | 128 | 125 | 108 | 107 | 112 | 110 | 84 | 82 | 53 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-on | cross | cross | cross | 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 | cross-on |
High Tide | 00:39AM0.53m | 1:37PM0.87m | 1:24AM0.59m | 2:00PM0.83m | 2:09AM0.65m | 2:19PM0.77m | 2:53AM0.68m | 2:34PM0.70m | 3:38AM0.70m | 2:46PM0.64m | 4:24AM0.70m | 2:51PM0.58m | ||||||||
Low Tide | 7:58PM0.23m | 6:56AM-0.01m | 8:15PM0.18m | 7:38AM0.04m | 8:34PM0.14m | 8:19AM0.10m | 8:55PM0.10m | 9:00AM0.18m | 9:17PM0.06m | 9:41AM0.27m | 9:39PM0.05m | 10:26AM0.34m | 10:02PM0.05m | |||||||
 |  | | |  |  |  |  | | | | | | | | | | | | | |
 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — |
mm | — | — | — | — | 4 | 2 | — | — | — | — | 1 | — | — | — | — | — | 3 | — | — | — |
Temp °C | 29 | 27 | 27 | 28 | 27 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 27 | 26 |
Feels °C | 29 | 31 | 30 | 32 | 30 | 27 | 27 | 26 | 26 | 28 | 27 | 28 | 27 | 26 | 28 | 28 | 27 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | ENE 11 | ENE 10 | ENE 9 | ENE 8 | E 13 | E 12 | E 12 | E 11 | NNE 8 | NE 8 | NNE 8 | ENE 10 | NNE 9 | NNE 9 | NE 9 | NE 9 | NE 9 | NE 8 | NE 8 | NE 8 |
| kJ | 759 | 378 | 211 | 140 | 158 | 104 | 72 | 94 | 58 | 59 | 59 | 128 | 96 | 94 | 107 | 112 | 110 | 84 | 82 | 53 |
Swell 2 Height (m) Direction Period (s) | S 9 | E 14 | E 13 | E 13 | NW 10 | NW 9 | NW 9 | SSW 12 | E 11 | SSW 15 | SSW 15 | NE 8 | SW 16 | SSW 13 | ENE 9 | ENE 8 | ENE 8 | SW 14 | SW 22 | ESE 7 |
| kJ | 122 | 132 | 168 | 168 | 74 | 27 | 20 | 14 | 89 | 22 | 22 | 72 | 10 | 17 | 26 | 14 | 6 | 8 | 18 | 18 |
Swell 3 Height (m) Direction Period (s) | E 14 | S 8 | NW 11 | NW 10 | SSW 13 | SSW 13 | SSW 13 | NNW 8 | SSW 16 | NW 8 | SSW 12 | SSW 16 | SW 13 | NW 15 | SSW 15 | SW 15 | SSW 14 | SE 8 | SW 14 | SW 21 |
| kJ | 97 | 32 | 29 | 76 | 34 | 33 | 32 | 6 | 26 | 3 | 13 | 24 | 7 | 8 | 21 | 8 | 20 | 3 | 8 | 18 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 11 | E 10 | — | ENE 10 | ENE 9 | E 5 | E 5 | ENE 5 | E 5 | ENE 6 | ENE 5 |
| kJ | — | — | — | — | 208 | 294 | 240 | 158 | 82 | 286 | 221 | — | 125 | 108 | 27 | 36 | 49 | 33 | 48 | 36 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 25 | 24 | 24 | 31 | 35 | 25 | 25 | 25 | 24 | 24 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 25 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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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