- Forecast
- Maps
- Live
- Weather State
- Spot Information
Mahai'ula Bay Surf Forecast
/ HAW – Big Island (60 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Mahai'ula Bay surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 1 am Tuesday 12 May 2026 HSTForecast update in hr min s Forecast update imminent
Mahai'ula Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mahai'ula Bay sea temperature is
25.9° C
(Which is slightly warmer than usual)How big are the waves at Mahai'ula Bay today?
The current surf forecast for Mahai'ula Bay at 6AM is: 0.3m 11s primary swell from a Northwest direction (forecast issued at 01:00am May 12). An open ocean swell of 0.8m 6s is not directed at the surf break, a second open ocean swell of 0.4m 16s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 1.5ft (0.4m) | 11s |
| Afternoon (12 May) | 1ft (0.3m) | 11s |
| Evening (12 May) | - | - |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 26°C on Wed morning, min 24°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||||||
Tuesday 12 | Wednesday 13 | Thursday 14 | ||||||||||||||||||||||
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 | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | S 16 | S 15 | NW 10 | N 6 | SSW 14 | S 14 | SSW 14 | SW 15 | W 3 | NNE 6 | SW 15 | S 13 | SW 14 | N 4 | NW 16 | NW 15 | NW 15 | NW 15 | NW 14 | |
30 | 19 | 19 | 42 | 18 | 0 | 0 | 16 | 15 | 0 | 0 | 0 | 34 | 1 | 0 | 33 | 0 | 33 | 10 | 41 | 58 | 77 | 76 | 102 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | glassy | glassy | glassy | cross | cross | glassy | cross-off | cross-off | glassy | on | on | glassy | cross-off | glassy | cross-on | glassy | glassy | on | on | glassy | cross-off | glassy | |
High Tide | 11:50PM0.58m | 1:21PM0.62m | 00:39AM0.54m | 1:59PM0.73m | 1:26AM0.50m | 2:38PM0.82m | ||||||||||||||||||
Low Tide | 6:35AM0.08m | 7:16PM0.27m | 7:03AM0.05m | 8:19PM0.22m | 7:34AM0.01m | 9:17PM0.18m | ||||||||||||||||||
 | |  | |  | |  | | | | | | | | | | | | | | | | | | |
 | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:52 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 26 | 25 | 26 | 25 | 24 | 24 | 24 | 25 | 26 | 26 | 26 | 25 | 25 |
25 | 25 | 26 | 27 | 28 | 27 | 26 | 27 | 26 | 25 | 26 | 28 | 26 | 29 | 27 | 26 | 26 | 26 | 27 | 28 | 28 | 28 | 25 | 28 | |
Swell 1 Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | S 4 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 7 |
 kJ | 60 | 34 | 34 | 28 | 38 | 41 | 41 | 36 | 26 | 32 | 42 | 32 | 32 | 58 | 77 | 55 | 40 | 5 | 34 | 35 | 45 | 47 | 48 | 40 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | SSW 16 | S 16 | SSW 16 | S 16 | S 16 | S 15 | SSW 15 | SSW 15 | SSW 14 | S 14 | SSW 14 | SSW 14 | S 13 | SSW 13 | S 13 | S 4 | S 13 | S 4 | S 12 | NW 15 | NW 15 | NW 15 | NW 14 |
| kJ | 50 | 84 | 127 | 83 | 127 | 76 | 70 | 71 | 71 | 70 | 106 | 40 | 62 | 31 | 35 | 30 | 6 | 53 | 6 | 26 | 58 | 77 | 76 | 102 |
Swell 3 Height (m) Direction Period (s) | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | SSW 14 | SSW 14 | S 15 | S 15 | S 14 | S 4 | S 4 | SW 15 | SSW 13 | S 13 | SW 15 | S 13 | SW 14 | S 12 | NW 16 | S 12 | S 12 | S 12 | S 12 |
| kJ | 30 | 19 | 19 | 42 | 18 | 41 | 41 | 68 | 38 | 37 | 3 | 3 | 34 | 35 | 31 | 33 | 54 | 33 | 26 | 41 | 25 | 25 | 44 | 69 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | S 4 | SSW 2 | NW 10 | N 6 | — | SSE 4 | — | N 6 | W 3 | SSE 4 | S 3 | — | NNE 6 | N 4 | — | S 4 | S 10 | — | N 7 |
| kJ | — | — | — | — | — | 1 | 1 | 16 | 15 | — | 6 | — | 16 | 1 | 4 | 2 | — | 29 | 10 | — | 1 | 18 | — | 22 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 11 | 18 | 1 | 103 | 24 | 103 | 11 | 11 | 11 | 100 | 100 | 103 | 11 | 1 | 1 | 100 | 18 | 18 | 100 | 136 | 0 | 0 | 0 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
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 Mahai'ula Bay 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