- 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 7 am Friday 15 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
25.8° 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 11AM is: 0.5m 13s primary swell from a Northwest direction and 0.2m 5s secondary swell from a South-southwest direction (forecast issued at 07:00am May 15). An open ocean swell of 0.6m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 1.5ft (0.5m) | 13s |
| Afternoon (15 May) | 1.5ft (0.5m) | 13s |
| Evening (15 May) | 1.5ft (0.4m) | 12s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Sat afternoon. Warm (max 27°C on Sat morning, min 24°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | SW 15 | SW 15 | NW 11 | NW 3 | NW 3 | SSW 17 | SSW 17 | SW 14 | SSW 16 | SW 14 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | |
113 | 87 | 84 | 82 | 75 | 52 | 51 | 50 | 49 | 83 | 0 | 31 | 2 | 1 | 0 | 0 | 73 | 0 | 72 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | cross-on | cross-on | on | glassy | cross-off | cross | cross-on | cross | on | cross | on | cross | cross-on | glassy | glassy | glassy | cross-on | on | cross | cross | cross-on | glassy | |
High Tide | 2:12AM0.45m | 3:19PM0.90m | 2:58AM0.40m | 4:02PM0.94m | 3:44AM0.36m | 4:48PM0.95m | ||||||||||||||||||
Low Tide | 8:07AM-0.01m | 10:12PM0.15m | 8:43AM-0.03m | 11:07PM0.14m | 9:22AM-0.03m | 00:03AM0.13m | ||||||||||||||||||
 |  | | |  |  | | | | | |  | | | | | | | | | | | | | |
 | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | 5:47 |
 | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | 6:52 |
— | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 27 | 26 | 26 | 25 | 24 | 24 | 24 | 25 | 27 | 27 | 26 | 25 | 25 | 25 |
28 | 27 | 28 | 27 | 28 | 29 | 28 | 28 | 28 | 29 | 29 | 26 | 29 | 26 | 25 | 28 | 28 | 28 | 29 | 29 | 27 | 27 | 28 | 29 | |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 |
 kJ | 33 | 36 | 36 | 35 | 34 | 32 | 41 | 38 | 32 | 35 | 37 | 39 | 37 | 37 | 22 | 164 | 144 | 137 | 135 | 137 | 196 | 193 | 188 | 183 |
Swell 2 Height (m) Direction Period (s) | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | SSE 11 | NW 12 | SSE 12 | SW 15 | SW 15 | SW 15 | SW 14 | S 5 | S 5 | NNE 7 | NNE 7 | S 11 | NE 8 | NE 8 | NNE 7 | NNE 7 | NNE 5 | NNE 5 |
| kJ | 113 | 87 | 84 | 82 | 75 | 52 | 40 | 50 | 45 | 83 | 107 | 106 | 103 | 15 | 14 | 21 | 21 | 59 | 31 | 31 | 35 | 32 | 19 | 15 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SW 16 | SSW 16 | SW 16 | SW 16 | S 11 | NW 12 | SSE 11 | NW 12 | SSE 12 | SSE 12 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | S 5 | SW 14 | NE 8 | SW 14 | SW 14 | SSE 10 | SW 21 | SSE 6 | SSW 18 |
| kJ | 103 | 64 | 100 | 124 | 124 | 21 | 51 | 40 | 49 | 46 | 47 | 93 | 92 | 95 | 99 | 8 | 73 | 28 | 72 | 54 | 36 | 117 | 8 | 61 |
Wind waves Height (m) Direction Period (s) | NNE 7 | — | SSW 5 | — | NNW 3 | — | S 4 | S 5 | — | — | — | NW 11 | NW 3 | NW 3 | — | — | — | — | — | — | — | — | — | — |
| kJ | 15 | — | 3 | — | 2 | — | 1 | 2 | — | — | — | 31 | 2 | 1 | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 100 | 101 | 100 | 1 | 1 | 100 | 19 | 1 | 99 | 99 | 57 | 54 | 19 | 11 | 0 | 11 | 99 | 100 | 34 | 100 | 100 | 11 |
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