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Surf Forecasts:

Goat Island/Mokuauia surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 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 0.5m and 13s period with a secondary swell of 0.7m and 8s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Goat Island/Mokuauia in the next 12 days are 1.9m 12s and forecast to arrive on Wednesday (Mar 18) at 2AM. 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 Friday (Mar 13) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Mon 16th Mar)1.5ft (0.5m) 13s
Best Surf 2AM (Wed 18th Mar)6ft (1.9m) 12s
Most Powerful 2AM (Wed 18th Mar)6ft (1.9m) 12s

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 137mm), heaviest during Fri afternoon. Warm (max 26°C on Thu morning, min 22°C on Fri afternoon). Winds increasing (light winds from the S on Wed night, strong winds from the SSW by Fri night).

Days 3-6 Weather Summary Heavy rain (total 43mm), heaviest during Sat morning. Warm (max 25°C on Sun morning, min 20°C on Mon night). Winds decreasing (strong winds from the SW on Sat morning, calm 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
4
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.2
E
1.1
E
1
E
0.9
ENE
0.7
ENE
0.7
ENE
1.4
SSW
0.6
E
0.4
N
0.8
N
0.8
N
0.8
N
0.7
N
0.6
E
1
NW
0.7
E
0.7
E
0.8
NNW
1.4
NW
1.5
NNW
1.9
NNW
Period(s) (?)8888886814121211119108813121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)200165134107616111944581961841631165419269701865426151002
Wind
(km/h)
20
S
20
SSW
10
SSW
15
S
15
SSE
10
SSW
30
S
40
SSW
40
S
35
SW
35
SW
35
SW
25
SW
25
WSW
15
SW
10
SW
20
NW
5
NW
10
N
10
N
15
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
onononononononcross-
on		oncross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
off		glassoffoffcross-
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
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
rain showers
light rain
cloud
light rain
mod rain
rain showers
rain showers
rain showers
Rain (mm)
67524320286214610-21-28222
Temp. °C242524262523232223232424252524242421222222
Feels °C (?)242425262423231918192222232324262322242322
  • 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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