Goat Island/Mokuauia Surf Break

Lat Long: 21.66° N 157.92° W

Issued: 7 am 03 Jul 2026 (local time)

Forecast update in  hr  min

Today's Goat Island/Mokuauia sea temperature is
26.0° 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 4 Jul 2026:

  • Most powerful swell: Tuesday 7 Jul, 5AM (local time) - 7.5ft (2.3m), 8s period, ENE swell with 597 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 2.3m 8s and forecast to arrive on Tuesday (Jul 07) at 5AM. 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 13s period and expected on Saturday (Jul 04) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Tue 7th Jul)7.5ft (2.3m) 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

Light rain (total 3mm), mostly falling on Sun morning. Warm (max 25°C on Fri morning, min 23°C on Sat night). Mainly fresh winds.

Days 4-6 Weather Summary

Light rain (total 4mm), mostly falling on Mon night. Warm (max 25°C on Mon morning, min 23°C on Mon night). Mainly fresh winds.

Friday
3
Saturday
4
Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
0
0
0
0
1
1
0
1
1
0
0
1
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)
1.6
ENE
8
1.7
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
NE
8
1.8
ENE
8
1.7
ENE
8
2.1
ENE
7
2.1
ENE
8
2
ENE
8
2.1
ENE
8
2.2
ENE
8
2
ENE
8
2.1
ENE
8
2.2
ENE
8
1.9
ENE
8
2
ENE
7
2.2
ENE
7
2
ENE
7
1.9
ENE
7
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
302
356
345
336
314
372
337
469
487
447
522
551
471
487
572
411
417
485
435
379
286
Wind (km/h)
25
ENE
25
ENE
25
E
25
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
25
ENE
25
E
30
ENE
25
E
Wind State
cross-off
cross-off
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
cross
cross-off
cross
High Tide
5:07PM0.69m
3:50AM0.30m
5:28PM0.66m
5:09AM0.30m
5:46PM0.62m
7:02AM0.33m
6:02PM0.57m
9:32AM0.41m
6:16PM0.51m
11:04AM0.53m
6:20PM0.46m
11:55AM0.64m
Low Tide
9:10AM-0.01m
00:02AM0.17m
9:42AM0.04m
00:34AM0.15m
10:17AM0.11m
1:07AM0.11m
11:02AM0.20m
1:44AM0.07m
12:32PM0.29m
2:27AM0.02m
3:44PM0.34m
3:15AM-0.03m
4:07AM-0.07m
clear
clear
part cloud
part cloud
part cloud
part cloud
rain showers
rain showers
clear
clear
clear
rain showers
rain showers
clear
rain showers
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:52
5:52
5:54
5:54
5:54
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
 mm
2
1
2
1
1
Temp °C
25
25
24
25
25
24
24
25
24
25
25
24
25
25
24
25
25
24
25
25
24
Feels °C
25
24
23
23
23
23
22
23
21
22
22
21
22
22
21
23
23
22
23
23
23
Swell 1
Height (m)
Direction
Period (s)
0.4
NW
14
0.5
NW
13
0.6
NW
13
0.6
NW
12
0.6
NW
12
0.4
NW
11
0.4
NW
11
0.4
NW
11
0.4
SSW
16
0.3
SSW
16
0.4
SSW
15
0.3
SSW
15
0.3
SSW
14
0.3
SSW
14
0.3
SSW
14
0.3
SSW
14
0.3
SSW
14
0.2
SSW
13
0.2
SSW
13
0.2
W
15
0.3
W
14
Energy kJ
48
84
103
90
87
44
42
41
102
50
89
44
41
40
37
38
36
17
16
17
35
Swell 2
Height (m)
Direction
Period (s)
0.4
SW
13
0.3
SW
16
0.3
SSW
16
0.4
SW
16
0.5
E
9
0.4
SW
15
0.3
ESE
9
0.3
SSW
18
0.3
NW
10
0.2
SSW
13
0.1
NW
10
0.2
SSW
14
0.1
NW
9
0.1
NW
9
0.1
SW
14
0.1
SW
13
0.1
W
17
0.1
W
17
0.2
W
15
0.2
SSW
12
0.2
SSW
12
Energy kJ
45
41
51
64
41
55
17
60
16
17
4
20
3
3
7
7
6
6
18
15
15
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
17
0.2
SSW
12
0.2
SSW
12
0.2
S
21
0.4
SW
15
0.3
SSW
19
0.4
SW
14
0.4
SW
14
0.1
S
10
0.2
NNW
10
0.1
W
10
0.1
NW
9
0.1
S
8
0.1
S
11
0.1
W
18
0.1
S
13
0.1
S
8
0.1
W
11
Energy kJ
29
14
15
35
60
72
54
52
2
10
2
3
1
2
6
3
1
2
Wind waves
Height (m)
Direction
Period (s)
1.6
ENE
8
1.7
ENE
8
1.7
ENE
8
1.7
ENE
8
1.6
NE
8
1.8
ENE
8
1.7
ENE
8
2.1
ENE
7
2.1
ENE
8
2
ENE
8
2.1
ENE
8
2.2
ENE
8
2
ENE
8
2.1
ENE
8
2.2
ENE
8
1.9
ENE
8
2
ENE
7
2.2
ENE
7
2
ENE
7
1.9
ENE
7
1.7
ENE
7
Energy kJ
302
356
345
336
314
372
337
469
487
447
522
551
471
487
572
411
417
485
435
379
286
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
2
2
3
3
2
2
1
1
2
1
2
2
2
1
1
1
1
1
Distance (km)
36
16
15
36
37
36
36
37
36
153
154
36
37
37
36
36
36
36
37
37
36
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
1
3
3
3
3
3
2
2
2
2
2
2
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
2
3
3
3
4
3
3
3
2
2
4
2
2
4
3
2
4
1
2
3
Header Global
Rating
(10 max)
7
5
6
5
9
7
5
6
8
7
4
5
9
8
9
6
5
5
8
5
8
  • 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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