Surf Break

Lat Long: 21.66° N 157.92° W

Goat Island/Mokuauia Surf Forecast and Surf Report

Issued: 7 pm 24 Sep 2026 (local time)

Forecast update in  hr  min

Today's Goat Island/Mokuauia sea temperature is
27.2°C
0.2° 

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 25 Sep 2026:

  • Most powerful swell: Sunday 27 Sep, 5AM (local time) - 13ft (4.0m), 9s period, E swell with 2,456 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 4.0m 9s and forecast to arrive on Sunday (Sep 27) 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 1.5m 13s period and expected on Wednesday (Sep 30) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Sun 27th Sep)13ft (4.0m) 9s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Fri morning, min 24°C on Sat night). Mainly strong winds.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Wed afternoon. Warm (max 27°C on Tue afternoon, min 25°C on Sun night). Mainly fresh winds.

Friday
25
Saturday
26
Sunday
27
Monday
28
Tuesday
29
Wednesday
30
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
1
1
1
0
0
0
0
0
1
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)
2.2
E
8
2.5
E
8
2.3
E
8
3
E
8
3.5
E
9
3.5
ENE
9
4
E
9
3.5
E
9
3.5
E
9
3
E
9
2.5
E
9
2.5
ENE
8
2.1
E
8
2.1
E
8
1.9
E
8
2
E
8
1.8
E
7
1.8
E
7
1.9
E
7
Wave Graph
Metric surfscale
Energy kJ
573
868
667
1295
1708
1728
2424
2249
2015
1215
943
915
617
593
470
494
340
330
337
Wind (km/h)
35
ENE
35
ENE
35
ENE
40
ENE
40
ENE
45
ENE
45
E
45
E
40
E
35
E
35
E
30
E
30
E
30
ESE
30
ESE
30
ESE
30
ESE
30
SE
25
SSE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
High Tide
1:13AM0.55m
1:27PM0.67m
1:52AM0.61m
1:43PM0.63m
2:34AM0.66m
1:59PM0.59m
3:19AM0.70m
2:15PM0.54m
4:10AM0.71m
2:27PM0.49m
5:09AM0.70m
2:28PM0.45m
Low Tide
6:53AM0.08m
7:35PM0.06m
7:33AM0.12m
7:56PM0.03m
8:16AM0.16m
8:21PM-0.01m
9:03AM0.21m
8:49PM-0.03m
9:58AM0.26m
9:21PM-0.03m
11:09AM0.31m
9:59PM-0.02m
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
6:20
—
—
6:20
—
—
6:20
—
—
6:22
—
—
6:22
—
—
6:22
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:25
—
6:24
—
—
6:23
—
—
6:22
—
—
6:22
—
—
6:21
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—
6:20
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 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3
4
Temp °C
25
26
26
25
26
25
25
26
26
25
26
26
25
26
27
26
27
27
26
Feels °C
23
24
24
23
22
21
21
21
22
22
24
24
23
26
26
26
26
25
25
  • 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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