Surf Forecasts:
Goat Island/Mokuauia surf forecast from 27 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 5PM (local time) - 8ft (2.4m), 13s period, E swell with offshore winds.
- Most powerful swell: Tuesday 28 Jul, 5PM (local time) - 8ft (2.4m), 13s period, E swell with 1,892 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 5PM (local time) - 8ft (2.4m), 13s period with E swell.
Best Forecast Surf Conditions for Goat Island/Mokuauia this week:
The surf forecast for Goat Island/Mokuauia over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 5PM. The primary swell is predicted to be 2.4m and 13s period with a secondary swell of 1.3m and 6s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Goat Island/Mokuauia in the next 16 days are 2.4m 13s and forecast to arrive on Tuesday (Jul 28) at 5PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Jul 28) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Tue 28th Jul) | 8ft (2.4m) 13s |
| Best Surf | 5PM (Tue 28th Jul) | 8ft (2.4m) 13s |
| Most Powerful | 5PM (Tue 28th Jul) | 8ft (2.4m) 13s |
Table - best surf conditions forecast for Goat Island/Mokuauia over the next 16 days.
Short Range ForecastLight rain (total 9mm), mostly falling on Mon night. Warm (max 27°C on Wed afternoon, min 24°C on Mon morning). Winds decreasing (fresh winds from the NE on Mon night, calm by Wed morning). | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 27°C on Thu afternoon, min 24°C on Fri night). Winds increasing (light winds from the E on Thu morning, strong winds from the ENE by Fri night). | ||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | E 14 | E 13 | E 13 | E 13 | E 13 | ENE 11 | ENE 10 | ENE 9 | ENE 8 | E 8 | E 8 | E 7 | E 8 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 640 | 792 | 1408 | 1657 | 1892 | 1824 | 932 | 575 | 437 | 316 | 270 | 352 | 458 | 439 | 617 | 795 | 871 | 1024 | 864 | 763 | 672 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | off | glassy | cross-on | cross-on | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 2:20PM0.73m | 00:17AM0.36m | 2:47PM0.75m | 00:59AM0.37m | 3:12PM0.75m | 1:40AM0.38m | 3:35PM0.75m | 2:25AM0.40m | 3:55PM0.73m | 3:14AM0.41m | 4:12PM0.69m | 4:10AM0.42m | 4:26PM0.65m | ||||||||
Low Tide | 8:45PM0.23m | 6:49AM-0.05m | 9:05PM0.21m | 7:22AM-0.05m | 9:29PM0.20m | 7:55AM-0.04m | 9:54PM0.18m | 8:27AM-0.01m | 10:20PM0.16m | 9:00AM0.05m | 10:45PM0.13m | 9:35AM0.11m | 11:13PM0.10m | ||||||||
 |  |  |  | | | | | | | |  | | | | | |  |  | | | |
 | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — | 6:03 | — | — |
 | — | 7:13 | — | — | 7:13 | — | — | 7:12 | — | — | 7:12 | — | — | 7:10 | — | — | 7:10 | — | — | 7:09 | — |
mm | — | — | 3 | 2 | — | 2 | — | — | 2 | — | — | — | — | — | — | — | — | 1 | — | — | 1 |
Temp °C | 25 | 25 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 25 | 24 | 25 | 25 | 25 |
Feels °C | 24 | 24 | 24 | 27 | 27 | 26 | 29 | 30 | 28 | 25 | 27 | 24 | 25 | 24 | 23 | 22 | 22 | 21 | 22 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | E 14 | E 13 | E 13 | E 13 | E 13 | ENE 11 | ENE 10 | ENE 9 | SSW 13 | SW 18 | NNE 7 | E 16 | E 15 | E 15 | E 15 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 |
| kJ | 640 | 792 | 1408 | 1657 | 1892 | 1824 | 932 | 575 | 35 | 49 | 15 | 81 | 157 | 294 | 205 | 267 | 267 | 264 | 260 | 195 | 184 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 14 | SSW 14 | SSW 14 | SSW 19 | SSW 13 | SW 18 | SW 16 | SW 16 | SSW 15 | SW 15 | SW 14 | SW 14 | SW 14 | N 9 | N 8 | SSW 13 |
| kJ | 42 | 41 | 40 | 36 | 35 | 36 | 36 | 38 | 37 | 34 | 79 | 68 | 65 | 93 | 77 | 50 | 47 | 48 | 14 | 12 | 16 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 11 | — | — | — | — | SW 15 | SW 20 | E 20 | N 9 | N 9 | N 9 | N 8 | N 8 | N 8 | N 8 | N 11 | N 10 | SW 14 | SW 13 | W 13 |
| kJ | 2 | 2 | — | — | — | — | 8 | 15 | 8 | 7 | 15 | 14 | 22 | 12 | 11 | 5 | 2 | 17 | 50 | 44 | 3 |
Wind waves Height (m) Direction Period (s) | NE 7 | NE 7 | NNE 7 | NNE 7 | NNE 6 | — | — | — | ENE 8 | E 8 | E 8 | E 7 | E 8 | E 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 281 | 255 | 211 | 160 | 131 | — | — | — | 437 | 316 | 270 | 352 | 458 | 439 | 617 | 795 | 871 | 1024 | 864 | 763 | 672 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 37 | 39 | 36 | 39 | 0 | 0 | 0 | 12 | 13 | 15 | 36 | 36 | 36 | 37 | 153 | 156 | 156 | 156 | 37 | 37 | 36 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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