- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Power Plant surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 am Wednesday 20 May 2026 HSTForecast update in hr min s Forecast update imminent
Power Plant surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Power Plant sea temperature is
25.8° C
(Which is slightly warmer than usual)How big are the waves at Power Plant today?
The current surf forecast for Power Plant at 12PM is: 0.6m 14s primary swell from a South-southwest direction (forecast issued at 07:00am May 20). An open ocean swell of 0.6m 10s is not directed at the surf break, a second open ocean swell of 1.6m 8s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 2.5ft (0.8m) | 14s |
| Afternoon (20 May) | 2ft (0.6m) | 14s |
| Evening (20 May) | 1.5ft (0.5m) | 14s |
Table - waves today at Power Plant. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 25°C on Wed morning, min 23°C on Wed night). Mainly fresh winds. | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 16 | SSW 15 | S 15 | S 15 | S 15 | S 15 | S 18 | S 18 | S 18 | S 18 | S 17 | S 16 | |
236 | 236 | 163 | 156 | 149 | 105 | 101 | 137 | 135 | 134 | 134 | 131 | 126 | 172 | 157 | 157 | 110 | 109 | 107 | 98 | 97 | 97 | 138 | 188 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | |
High Tide | 6:18AM0.19m | 7:28PM0.72m | 8:01AM0.20m | 8:22PM0.66m | 10:01AM0.25m | 9:15PM0.60m | ||||||||||||||||||
Low Tide | 2:45AM0.14m | 11:14AM0.07m | 3:42AM0.13m | 12:10PM0.14m | 4:27AM0.12m | 1:30PM0.22m | ||||||||||||||||||
 |  |  | | | | |  | | | | | | | | | | | | | | | | | |
 | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | 5:50 |
 | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | 7:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 24 | 25 | 25 | 25 | 23 | 23 | 23 | 23 | 23 | 24 | 25 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 25 | 24 | 23 | 23 | 23 |
24 | 23 | 23 | 22 | 22 | 20 | 20 | 20 | 20 | 19 | 20 | 20 | 20 | 19 | 19 | 19 | 20 | 19 | 20 | 21 | 20 | 19 | 20 | 21 | |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | NNW 10 | NNW 10 | SSW 13 | S 16 | S 16 | S 16 | S 16 | SSW 15 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 17 | S 16 |
 kJ | 236 | 236 | 163 | 156 | 149 | 105 | 63 | 39 | 102 | 134 | 134 | 131 | 126 | 172 | 157 | 157 | 110 | 109 | 107 | 98 | 93 | 93 | 138 | 188 |
Swell 2 Height (m) Direction Period (s) | NNW 10 | NW 10 | NNW 10 | NNW 10 | NNW 11 | NNW 11 | SSW 13 | S 16 | S 16 | SSW 13 | SSW 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | NW 10 | S 18 | S 18 | NNW 11 | NNW 11 | NNW 11 |
| kJ | 94 | 49 | 69 | 95 | 64 | 64 | 101 | 137 | 135 | 70 | 60 | 44 | 44 | 43 | 42 | 40 | 39 | 37 | 27 | 98 | 97 | 46 | 46 | 45 |
Swell 3 Height (m) Direction Period (s) | SE 9 | SE 9 | SSW 18 | SSW 18 | S 18 | SSW 18 | SSW 17 | SSW 13 | NNW 10 | NNW 10 | NW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NW 10 | NW 10 | S 18 | NNW 11 | NNW 11 | S 18 | SSW 13 | SSW 13 |
| kJ | 22 | 21 | 63 | 104 | 56 | 61 | 100 | 67 | 38 | 38 | 24 | 19 | 19 | 18 | 18 | 19 | 25 | 25 | 101 | 45 | 46 | 97 | 60 | 59 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 |
| kJ | 257 | 257 | 334 | 341 | 341 | 493 | 546 | 597 | 612 | 601 | 809 | 829 | 935 | 839 | 715 | 732 | 607 | 560 | 616 | 588 | 562 | 444 | 578 | 511 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 8 | 12 | 16 | 16 | 19 | 19 | 158 | 158 | 158 | 161 | 158 | 160 | 286 | 161 | 158 | 9 | 15 | 170 | 172 | 170 | 170 | 19 | 12 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Power Plant surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest