Surf Break

Lat Long: 21.66° N 157.92° W

Goat Island/Mokuauia Surf Forecast and Surf Report

Issued: 7 am 15 Oct 2026 (local time)

Forecast update in  hr  min

Today's Goat Island/Mokuauia sea temperature is
26.8°C
0.0° 

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 16 Oct 2026:

  • Most powerful swell: Monday 19 Oct, 5AM (local time) - 8ft (2.5m), 8s period, ENE swell with 846 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 2.5m 8s and forecast to arrive on Monday (Oct 19) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Thursday (Oct 15) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Mon 19th Oct)8ft (2.5m) 8s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Sat afternoon. Warm (max 26°C on Thu morning, min 24°C on Thu night). Mainly fresh winds.

Days 4-6 Weather Summary

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

Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
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
0
1
0
0
0
0
0
1
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
NW
12
0.9
NNW
11
0.9
NNW
11
1.2
NNW
13
1.4
NNW
13
1.3
NNW
11
1.2
NNW
11
1.8
ENE
7
1.9
ENE
7
2
ENE
7
2.1
ENE
7
2.5
ENE
8
2.4
ENE
8
2.3
ENE
8
2.1
ENE
8
2.2
ENE
8
2.2
ENE
8
2.2
ENE
8
2
ENE
8
1.7
ENE
8
1.6
ENE
8
Wave Graph
Metric surfscale
Energy kJ
319
223
190
468
576
394
344
307
358
440
469
801
709
669
494
526
526
526
437
345
273
Wind (km/h)
30
E
30
ENE
30
ENE
30
ENE
30
ENE
35
ENE
30
ENE
30
ENE
30
ENE
30
E
35
ENE
35
E
35
E
30
E
35
E
35
E
35
E
30
E
30
E
30
E
20
ENE
Wind State
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross
cross
cross
cross
cross
cross-off
cross
cross
cross-off
cross-off
High Tide
7:05AM0.59m
8:55AM0.58m
10:04AM0.60m
9:43PM0.23m
10:45AM0.62m
10:53PM0.30m
11:12AM0.64m
11:28PM0.38m
11:32AM0.64m
00:02AM0.47m
Low Tide
9:34PM0.05m
10:06PM0.09m
11:04PM0.13m
7:50PM0.17m
1:39AM0.16m
6:11PM0.17m
3:21AM0.15m
5:54PM0.15m
4:24AM0.15m
5:56PM0.11m
clear
clear
clear
part cloud
clear
clear
clear
rain showers
rain showers
clear
clear
rain showers
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
—
—
6:26
—
—
6:28
—
—
6:28
—
—
6:28
—
—
6:28
—
—
6:28
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
6:07
—
—
6:06
—
—
6:05
—
—
6:04
—
—
6:02
—
—
6:02
—
—
6:01
—
 mm
—
—
—
—
—
—
—
1
1
—
—
1
—
—
—
—
—
—
—
—
—
Temp °C
26
26
25
26
26
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
Feels °C
25
25
23
24
24
23
22
23
22
22
21
22
22
22
22
22
22
22
22
22
23
  • 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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