Chinamans Hat/Mokolii Surf Break

Lat Long: 21.51° N 157.83° W

Chinamans Hat/Mokolii Surf Forecast and Surf Report

Issued: 1 pm 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Chinamans Hat/Mokolii sea temperature is
26.9°C
0.0° 

Chinamans Hat/Mokolii surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Chinamans Hat/Mokolii surf forecast from 6 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 8PM (local time) - 5ft (1.6m), 10s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Saturday 5 Sep, 8PM (local time) - 7ft (2.2m), 14s period, ENE swell with 1,730 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 8PM (local time) - 5ft (1.6m), 10s 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 8PM. The primary swell is predicted to be 1.6m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Chinamans Hat/Mokolii in the next 16 days are 2.2m 14s and forecast to arrive on Saturday (Sep 05) at 8PM. 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 Tuesday (Sep 08) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 8th Sep)5ft (1.6m) 10s
Best Surf 8PM (Tue 8th Sep)5ft (1.6m) 10s
Most Powerful 8PM (Sat 5th Sep)7ft (2.2m) 14s

Table - best surf conditions forecast for Chinamans Hat/Mokolii over the next 16 days.


The Lowdown

Hey folks, Rusty here. Let’s be straight up – the next couple of weeks are looking pretty grim for surf around here. We’ve got one spot to talk about, and it’s a real case of “if you’re desperate.” Chinamans Hat/Mokolii is the only game in town, and it’s a tough one.

The forecast kicks off on Saturday, 5th September, but don’t get your hopes up. The swell is a messy 7ft from the ENE, with a period of 14 seconds. That’s a long-period groundswell, which at a point break like this can be okay, but the wind is a cross-onshore howl at 15 mph, whipping it into a choppy mess. The energy is pumping at 1725, but it’s all for nothing with those conditions. It’s a “poor surf” call, and it stays that way for days.

Sunday the 6th through Monday the 7th is more of the same: cross-shore and cross-on winds, lumpy chop, and the swell drops a bit. The energy is still moderate to strong (1123-1100), but the quality is just not there. You’re looking at “marginal” at best, with some stormy risks thrown in.

Then on Tuesday, 8th September, a tiny glimmer. The wind swings to the S, giving us a clean cross-off breeze at 18 mph. The swell is 7ft from the ENE, but here’s the rub – the period drops to 11 seconds, and the energy is still high at 991. It’s clean, but it’s a strong, fresh wind so it’s not going to be pretty. Still, it’s the best we’ve got. The water temp is a balmy 80°F, which is bang on average for the time of year.

Wednesday, 9th September, the wind eases to a gentle 9 mph from the SE, and the swell drops to 4ft with a short 8-second period. The energy is weak at 375. It’s clean in the morning, and the guidance says “expect good surf conditions,” but honestly, it’s small and weak. It’s a marginal option at best.

After that, it’s a long, sad slide. From Thursday the 10th right through to the end of the window on Sunday, 20th September, it’s a non-stop run of poor surf. The wind is almost always cross-on or cross-shore, the swell is short-period junk (6-8 seconds), and the energy drops to a pitiful 171-332. The waves are small, choppy, and wind-affected. For a spot that’s already inconsistent, this is a real bummer.

If you’re a beginner, be careful. The swell hits 7ft early on and stays around 5ft-7ft for a bit, which is too much for learning. After that, it’s small and weak, but the chop makes it ugly. For the experienced heads, there’s nothing to get excited about here. The whole 16-day stretch is a write-off for quality waves. Honestly, this setup with the strong winds and messy surf looks more interesting for kite surfing than paddle surfing.

It’s a quiet period, but it won’t stay poor forever. Forecasts change.

Rusty.

Short Range Forecast

Moderate rain (total 14mm), heaviest on Sun night. Warm (max 28°C on Tue morning, min 25°C on Sat afternoon). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Wed afternoon. Warm (max 28°C on Tue afternoon, min 25°C on Wed night). Wind will be generally light.

Sat
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
0
0
1
1
3
1
2
2
0
0
0
0
0
0
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
ENE
13
2.2
ENE
13
2
E
12
2
E
12
1.4
E
12
1.5
E
13
1.6
E
12
2.2
ENE
12
1.9
ENE
11
1.7
ENE
11
1.4
ENE
10
1.2
ENE
8
1.3
ENE
8
1.3
ENE
7
1.4
ENE
7
1.3
ENE
7
1.3
ENE
7
1.3
ENE
12
1.3
ENE
12
1.5
ENE
11
Wave Graph
Metric surfscale
Energy kJ
1679
1568
1234
1155
584
747
812
1294
901
661
342
202
201
172
197
154
167
477
437
494
Wind (km/h)
15
ENE
15
E
20
E
20
E
25
ESE
30
ESE
25
ESE
20
SE
25
SSE
20
SSE
10
SSE
15
ESE
15
E
20
E
20
E
10
ENE
15
E
15
E
15
E
10
E
Wind State
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross
cross
cross-on
cross-on
cross
cross-on
cross-on
High Tide
12:06PM0.87m
10:48PM0.37m
12:41PM0.90m
11:50PM0.45m
1:11PM0.90m
00:39AM0.53m
1:37PM0.87m
1:24AM0.59m
2:00PM0.83m
2:09AM0.65m
2:19PM0.77m
2:53AM0.68m
Low Tide
4:10AM0.02m
7:51PM0.29m
5:18AM-0.01m
7:46PM0.26m
6:11AM-0.02m
7:58PM0.23m
6:56AM-0.01m
8:15PM0.18m
7:38AM0.04m
8:34PM0.14m
8:19AM0.10m
8:55PM0.10m
rain showers
rain showers
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
clear
clear
rain showers
part cloud
rain showers
clear
part cloud
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:44
6:43
6:42
6:40
6:39
6:38
6:37
 mm
2
1
5
4
2
1
1
Temp °C
26
25
26
27
26
26
27
26
28
28
27
27
27
26
26
26
25
26
26
25
Feels °C
27
26
27
28
27
25
27
27
29
29
30
29
29
28
27
27
27
27
27
26
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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