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Surf Forecasts:

Goat Island/Mokuauia surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 7 am Wednesday 11 Mar 2026 HST
Forecast update in hr  min  s Forecast update imminent
Goat Island/Mokuauia surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Goat Island/Mokuauia sea temperature is
24.4° C
 (Which is normal for this time of year)

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

The surf forecast for Goat Island/Mokuauia over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Mar 16) at 8PM. The primary swell is predicted to be 0.8m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Goat Island/Mokuauia in the next 12 days are 1.9m 11s and forecast to arrive on Wednesday (Mar 18) 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 3.0m 8s period and expected on Saturday (Mar 14) at 5AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 16th Mar)2.5ft (0.8m) 13s
Best Surf 5AM (Tue 17th Mar)4.5ft (1.4m) 12s
Most Powerful 5AM (Wed 18th Mar)6ft (1.9m) 11s

Table - best surf conditions forecast for Goat Island/Mokuauia over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 124mm), heaviest during Fri afternoon. Warm (max 26°C on Thu morning, min 21°C on Thu night). Winds increasing (light winds from the SSW on Wed night, strong winds from the SSW by Fri afternoon).

Days 3-6 Weather Summary Heavy rain (total 54mm), heaviest during Sat morning. Warm (max 24°C on Sat afternoon, min 21°C on Mon night). Winds decreasing (strong winds from the SW on Sat morning, light winds from the NW by Mon night).

Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
3
3
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.3
E
1.1
E
1
E
1
E
0.7
ENE
0.9
E
0.4
N
0.6
E
0.6
E
0.8
N
0.9
N
0.8
N
0.8
N
1.2
NW
0.6
N
0.6
E
0.6
NNW
1.1
NNW
1.6
NNW
1.6
NNW
1.4
NNW
Period(s) (?)888888128812121211111081313121111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)23416513412762934948511962321691553347551141411658603478
Wind
(km/h)
20
S
20
SSW
10
SSW
15
S
15
S
20
SSE
35
SSW
45
SSW
40
SSW
40
SW
30
SW
35
SW
30
WSW
20
WSW
10
SW
15
W
20
WNW
10
WNW
10
NNW
10
NNE
15
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
oncross-
on		onononcross-
on		ononcross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscross-
off		cross-
off		offoffcross-
off
High Tide
/ height (m)
11:53PM
0.51
12:21AM
0.56
10:49AM
0.19
12:44AM
0.60
11:36AM
0.25
1:04AM
0.62
12:13PM
0.31
1:22AM
0.64
12:50PM
0.38
1:39AM
0.63
1:30PM
0.45
1:57AM
0.61
Low Tide
/ height (m)
12:36PM
0.05
3:17PM
0.05
8:12AM
0.13
4:34PM
0.01
7:28AM
0.13
5:20PM
-0.02
7:22AM
0.11
5:59PM
-0.04
7:29AM
0.08
6:36PM
-0.04
7:44AM
0.04
7:14PM
-0.02
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Monday
16
Tuesday
17
Sunrise6:43--6:43--6:41--6:41--6:39--6:39--6:37--
Sunset-6:38--6:38--6:39--6:39--6:40--6:40--6:40-
thunderstorm
thunderstorm
thunderstorm
part cloud
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
light rain
light rain
light rain
mod rain
cloud
part cloud
rain showers
Rain (mm)
561-1181531472765121228--1
Temp. °C242524262323232224232424242423222221222222
Feels °C (?)242425262122201919192121222224222222232322
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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View detailed surf forecast for Goat Island/Mokuauia at:
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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 12 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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