Surf Break

Lat Long: 21.66° N 157.92° W

Goat Island/Mokuauia Surf Forecast and Surf Report

Issued: 1 am 04 Oct 2026 (local time)

Forecast update in  hr  min

Today's Goat Island/Mokuauia sea temperature is
26.9°C
0.1° 

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 Oct 2026:

  • Most powerful swell: Wednesday 7 Oct, 11AM (local time) - 4.5ft (1.3m), 14s period, NNW swell with 701 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 1.3m 14s and forecast to arrive on Wednesday (Oct 07) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Sunday (Oct 04) at 11AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Wed 7th Oct)4.5ft (1.3m) 14s

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


Short Range Forecast

Light rain (total 7mm), mostly falling on Sun morning. Warm (max 26°C on Sun morning, min 24°C on Sun night). Winds decreasing (fresh winds from the ENE on Sun afternoon, light winds from the S by Tue night).

Days 4-6 Weather Summary

Moderate rain (total 10mm), heaviest on Thu afternoon. Warm (max 27°C on Thu morning, min 24°C on Wed morning). Wind will be generally light.

Sunday
4
Monday
5
Tuesday
6
Wednesday
7
Thursday
8
Friday
9
Saturday
10
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
1
1
1
1
1
1
2
2
1
0
0
0
0
1
0
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
NW
12
1.8
NE
6
1.5
ENE
6
0.7
NW
12
0.9
NW
12
0.9
NW
11
0.8
NNW
11
0.7
NW
18
1
NNW
16
1.3
NNW
14
1.3
NNW
13
1.2
NW
13
1.1
NW
12
1
NW
12
1
NW
11
0.9
NW
11
0.5
NW
26
1.2
NW
11
0.9
NW
20
1.5
E
7
1.4
E
7
Wave Graph
Metric surfscale
Energy kJ
36
261
181
154
202
176
146
319
539
701
599
486
367
278
233
191
321
347
552
208
192
Wind (km/h)
30
ENE
30
ENE
25
ENE
25
ENE
25
ENE
15
ENE
15
E
15
E
15
SE
10
SSE
10
SSW
10
S
20
SE
20
SE
15
SE
20
ESE
20
ESE
25
E
30
E
20
E
20
E
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
High Tide
10:45AM0.73m
10:18PM0.30m
11:27AM0.74m
11:24PM0.38m
11:59AM0.73m
00:12AM0.48m
12:24PM0.71m
00:53AM0.56m
12:45PM0.66m
1:32AM0.63m
1:01PM0.62m
2:10AM0.68m
1:15PM0.57m
2:47AM0.71m
Low Tide
6:38PM0.19m
3:33AM0.08m
6:22PM0.16m
4:41AM0.08m
6:28PM0.13m
5:35AM0.09m
6:40PM0.09m
6:21AM0.11m
6:55PM0.05m
7:04AM0.15m
7:13PM0.02m
7:47AM0.19m
7:32PM-0.01m
rain showers
part cloud
rain showers
rain showers
clear
rain showers
clear
clear
rain showers
clear
clear
rain showers
part cloud
thunderstorm
thunderstorm
clear
clear
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
—
—
6:24
—
—
6:24
—
—
6:24
—
—
6:24
—
—
6:24
—
—
6:24
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
6:15
—
—
6:15
—
—
6:14
—
—
6:14
—
—
6:13
—
—
6:12
—
—
6:10
—
 mm
1
—
1
1
—
1
—
—
3
—
—
2
—
5
3
—
—
—
—
—
—
Temp °C
26
25
25
25
25
25
26
26
25
26
26
25
27
27
26
26
27
25
25
25
25
Feels °C
24
23
23
24
24
24
27
26
26
28
27
27
27
28
28
27
27
25
24
24
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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