Chinamans Hat/Mokolii surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 1 am Monday 18 May 2026 HST
Forecast update in hr  min  s Forecast update imminent
Chinamans Hat/Mokolii surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Chinamans Hat/Mokolii sea temperature is
25.1° C
(Which is normal for this time of year)

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 3.0m 8s and forecast to arrive on Thursday (May 21) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 15s period and expected on Monday (May 18) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Thu 21st May)10ft (3.0m) 8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Tue morning. Warm (max 25°C on Tue afternoon, min 23°C on Mon night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Sat morning. Warm (max 24°C on Thu morning, min 22°C on Thu night). Mainly fresh winds.

Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
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)
1.8
ENE
8
1.8
ENE
8
1.3
ENE
8
1.5
E
8
1.6
ENE
8
1.8
ENE
8
2.3
ENE
8
2.4
ENE
8
2.4
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.3
ENE
8
2.5
ENE
8
2.3
ENE
8
2.3
ENE
8
2.3
ENE
8
2.2
ENE
8
2.2
ENE
8
2.1
ENE
8
Wave Graph
Metric surfscale
Energy kJ
427
427
212
286
333
404
576
727
745
867
889
977
824
705
798
717
721
713
659
643
507
Wind (km/h)
25
E
20
E
20
E
20
E
20
ENE
20
ENE
30
E
30
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
30
ENE
30
E
30
ENE
30
ENE
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-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
4:35PM0.89m
1:44AM0.33m
5:31PM0.85m
6:30PM0.80m
7:28PM0.75m
6:27AM0.21m
8:23PM0.69m
9:47AM0.28m
9:08PM0.63m
11:13AM0.40m
9:44PM0.58m
Low Tide
8:54AM-0.23m
00:12AM0.28m
9:40AM-0.18m
10:28AM-0.11m
11:22AM-0.02m
4:53AM0.18m
12:27PM0.09m
4:45AM0.14m
1:58PM0.19m
4:59AM0.09m
3:43PM0.26m
part cloud
part cloud
part cloud
thunderstorm
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
rain showers
rain showers
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:50
5:50
5:50
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:02
7:04
7:04
7:05
7:05
7:06
7:06
2
1
2
Temp °C
24
24
24
24
25
24
24
24
23
24
24
23
24
24
23
24
23
23
24
24
23
24
23
24
24
25
24
23
22
20
20
20
19
20
20
18
20
19
20
21
20
20
Swell 1
Height (m)
Direction
Period (s)
0.2
SSW
14
0.3
SSW
16
0.7
E
9
0.4
NNW
12
0.4
NNW
11
0.4
NNW
11
0.5
NNW
10
0.5
NNW
11
0.4
NNW
10
0.3
NNW
10
0.2
NNW
10
0.3
SSW
15
0.4
NW
10
0.4
NW
11
0.4
NW
11
0.4
NW
10
0.4
NW
10
0.4
NNW
14
0.5
NW
13
0.5
NW
12
0.5
NW
11
Energy kJ
20
48
74
54
47
45
62
65
42
19
9
42
26
30
29
27
26
71
78
72
64
Swell 2
Height (m)
Direction
Period (s)
0.2
NNW
13
0.2
NNW
12
0.4
NW
11
0.3
SSW
14
0.3
SSW
17
0.3
NNW
12
0.2
SSW
14
0.2
SSW
14
0.2
S
17
0.2
S
16
0.3
SSW
16
0.2
NNW
10
0.2
S
14
0.2
S
14
0.3
S
16
0.3
S
16
0.3
S
15
0.4
NW
10
0.3
S
13
0.3
S
13
0.3
S
14
Energy kJ
18
15
33
40
59
30
21
19
22
20
48
10
16
14
47
45
39
25
32
32
37
Swell 3
Height (m)
Direction
Period (s)
0.2
NNW
9
0.2
NNW
9
0.2
SSW
14
0.2
SSW
18
0.2
SSE
6
0.3
SSW
15
0.1
S
18
0.2
S
18
0.2
SSW
13
0.2
SSE
13
0.2
SSE
13
0.2
SSE
13
0.2
S
18
0.2
S
18
0.2
S
13
0.2
S
13
0.2
NNW
15
0.3
S
15
0.2
S
16
0.1
S
16
0.1
S
21
Energy kJ
8
8
18
30
3
42
6
24
17
17
17
16
25
25
14
13
22
38
21
5
8
Wind waves
Height (m)
Direction
Period (s)
1.8
ENE
8
1.8
ENE
8
1.3
ENE
8
1.5
E
8
1.6
ENE
8
1.8
ENE
8
2.3
ENE
8
2.4
ENE
8
2.4
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.5
ENE
8
2.3
ENE
8
2.5
ENE
8
2.3
ENE
8
2.3
ENE
8
2.3
ENE
8
2.2
ENE
8
2.2
ENE
8
2.1
ENE
8
Energy kJ
427
427
212
286
333
404
576
727
745
867
889
977
824
705
798
717
721
713
659
643
507
Nearest Offshore or Glassy
Rating
(10 max)
3
2
1
1
1
1
1
2
1
2
1
2
1
3
2
1
1
2
2
1
2
Distance (km)
35
35
29
28
28
28
37
40
41
40
276
41
136
193
40
136
141
41
37
136
37
Best forecast wave conditions in Oahu
Rating
(10 max)
3
2
1
1
1
2
2
2
1
2
2
2
2
2
2
Best forecast wave conditions in United States
Rating
(10 max)
4
4
3
3
3
4
3
3
3
4
2
3
1
3
2
1
2
2
2
1
2
Header Global
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
5
7
5
5
7
6
5
4
5
4
  • Map Icons:
  • Break
  • 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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