Goat Island/Mokuauia Surf Break

Lat Long: 21.66° N 157.92° W

Issued: 1 pm 29 Jun 2026 (local time)

Forecast update in  hr  min

Today's Goat Island/Mokuauia sea temperature is
25.9° C

Normal for this time of year

Goat Island/Mokuauia surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Goat Island/Mokuauia surf forecast from 30 Jun 2026:

  • Most powerful swell: Wednesday 1 Jul, 11PM (local time) - 7ft (2.1m), 8s period, ENE swell with 555 kJ wave energy.

Best Forecast Surf Conditions for Goat Island/Mokuauia this week:

The most powerful waves expected at Goat Island/Mokuauia in the next 16 days are 2.1m 8s and forecast to arrive on Wednesday (Jul 01) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 14s period and expected on Tuesday (Jun 30) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Wed 1st Jul)7ft (2.1m) 8s

Table - best surf conditions forecast for Goat Island/Mokuauia over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Tue night. Warm (max 25°C on Mon afternoon, min 24°C on Mon night). Mainly fresh winds.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Thu night. Warm (max 25°C on Thu afternoon, min 24°C on Thu night). Mainly fresh winds.

Mon
29
Tuesday
30
Wednesday
1
Thursday
2
Friday
3
Saturday
4
Sunday
5
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
1
1
1
0
0
1
0
0
1
1
0
1
1
0
1
0
0
0
0
0
Swell
Height Map
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
1.7
ENE
8
1.5
ENE
7
1.5
ENE
7
1.8
ENE
8
1.9
ENE
8
2
ENE
8
1.9
ENE
8
1.7
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
ENE
8
1.9
ENE
8
1.8
ENE
8
1.7
ENE
8
1.8
ENE
8
1.8
ENE
8
1.9
ENE
8
1.8
ENE
8
1.9
ENE
7
1.9
ENE
7
Wave Graph
Metric surfscale
Energy kJ
375
322
249
234
403
454
499
432
355
319
310
310
430
392
356
444
412
430
382
397
379
Wind (km/h)
25
E
25
ENE
25
ENE
25
ENE
25
E
25
E
25
E
25
ENE
30
ENE
25
ENE
25
E
25
ENE
30
ENE
25
E
25
E
30
ENE
25
ENE
30
ENE
30
ENE
25
ENE
30
ENE
Wind State
cross
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
3:10PM0.72m
00:37AM0.32m
3:43PM0.73m
1:18AM0.32m
4:14PM0.72m
2:01AM0.31m
4:42PM0.71m
2:50AM0.31m
5:07PM0.69m
3:50AM0.30m
5:28PM0.66m
5:09AM0.30m
5:46PM0.62m
7:02AM0.33m
Low Tide
9:47PM0.22m
7:31AM-0.08m
10:21PM0.22m
8:05AM-0.07m
10:56PM0.21m
8:38AM-0.05m
11:30PM0.20m
9:10AM-0.01m
00:02AM0.17m
9:42AM0.04m
00:34AM0.15m
10:17AM0.11m
1:07AM0.11m
11:02AM0.20m
clear
clear
part cloud
clear
thunderstorm
clear
clear
part cloud
cloud
part cloud
rain showers
part cloud
part cloud
part cloud
clear
clear
rain showers
clear
clear
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:52
5:52
5:52
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:17
7:17
7:17
7:17
7:17
7:17
7:17
7:17
 mm
1
1
2
Temp °C
25
25
25
25
25
25
25
24
25
25
24
24
25
24
25
25
24
25
25
24
24
Feels °C
24
24
25
25
26
24
24
23
23
24
23
23
23
22
24
23
22
23
23
22
22
Swell 1
Height (m)
Direction
Period (s)
0.3
SW
15
0.2
SSW
15
0.3
SW
15
0.3
SW
14
0.4
SW
14
0.4
SW
14
0.4
SW
14
0.4
SW
14
0.4
SW
14
0.4
SW
14
0.4
SW
13
0.4
NW
14
0.5
NW
13
0.6
NW
13
0.6
NW
12
0.6
NW
12
0.5
NW
11
0.4
NW
11
0.4
NW
11
0.3
SSW
16
0.3
SSW
16
Energy kJ
35
22
33
33
53
53
53
48
51
48
44
48
84
103
90
87
61
42
41
51
50
Swell 2
Height (m)
Direction
Period (s)
0.2
WNW
10
0.2
WNW
10
0.2
WNW
9
0.2
WNW
9
0.2
WNW
15
0.2
WNW
15
0.2
WNW
14
0.2
WNW
14
0.2
WNW
13
0.2
WNW
13
0.4
NW
12
0.4
SW
13
0.3
SW
16
0.3
SSW
16
0.4
SW
16
0.4
SW
15
0.4
SW
15
0.4
SW
14
0.4
SW
14
0.3
NW
10
0.2
NNW
10
Energy kJ
9
9
8
8
22
22
20
19
18
17
40
45
41
51
64
60
55
54
52
16
10
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
15
0.2
S
15
0.2
S
13
0.2
W
16
0.1
NW
9
0.1
NW
8
0.1
NW
8
0.1
S
20
0.1
NW
14
0.2
W
13
0.2
SSW
18
0.2
SSW
17
0.2
SSW
12
0.2
SSW
12
0.4
ESE
9
0.2
SSW
20
0.3
SSW
19
0.3
SSW
18
0.3
SSW
18
0.2
SSW
13
0.2
SSW
13
Energy kJ
21
17
14
20
3
3
2
8
7
13
31
29
14
15
28
38
72
62
60
17
17
Wind waves
Height (m)
Direction
Period (s)
1.8
ENE
8
1.7
ENE
8
1.5
ENE
7
1.5
ENE
7
1.8
ENE
8
1.9
ENE
8
2
ENE
8
1.9
ENE
8
1.7
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
ENE
8
1.9
ENE
8
1.8
ENE
8
1.7
ENE
8
1.8
ENE
8
1.8
ENE
8
1.9
ENE
8
1.8
ENE
8
1.9
ENE
7
1.9
ENE
7
Energy kJ
375
322
249
234
403
454
499
432
355
319
310
310
430
392
356
444
412
430
382
397
379
Nearest Offshore or Glassy
Rating
(10 max)
1
2
1
1
1
1
2
2
2
1
1
2
2
1
1
2
1
3
2
2
2
Distance (km)
36
36
36
15
36
36
36
36
36
153
36
36
36
15
15
37
15
36
37
36
36
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
1
1
2
1
2
2
2
2
2
2
1
1
3
2
3
3
2
2
Best forecast wave conditions in United States
Rating
(10 max)
2
3
3
2
2
1
3
2
2
2
2
2
2
3
1
3
2
3
3
3
2
Header Global
Rating
(10 max)
5
5
5
5
4
4
5
6
9
6
5
7
5
7
5
5
5
9
8
9
9
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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Information about the Goat Island/Mokuauia Surf forecast

The above surf forecast table for Goat Island/Mokuauia provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Goat Island/Mokuauia can be found by selecting the local surf guide option on the grey menu. Our Goat Island/Mokuauia 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 (Goat Island/Mokuauia) 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 Goat Island/Mokuauia 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.

Goat Island/Mokuauia is 21 km (13 miles) from Wahiawa. If you plan a vacation in Oahu, look for hotels and other accommodation in Wahiawa. Wahiawa has rooms for a wide range of budgets as well as car hire and transport links.

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