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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 pm Sunday 17 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
26.0° 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 6PM is: 0.5m 3s primary swell from a North direction (forecast issued at 01:00pm May 17). An open ocean swell of 0.7m 15s is not directed at the surf break, a second open ocean swell of 0.6m 8s is not directed at the surf break. The wind direction is predicted to be onshore.
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 8mm), mostly falling on Mon afternoon. Warm (max 27°C on Sun afternoon, min 25°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 15 | SSW 16 | N 3 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 14 | SSW 14 | WSW 9 | N 6 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | |
0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | on | glassy | glassy | cross-off | glassy | glassy | on | cross-on | cross | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | glassy | cross-off | cross-off | glassy | cross | glassy | |
High Tide | 4:48PM0.95m | 4:33AM0.32m | 5:37PM0.93m | 5:26AM0.30m | 6:28PM0.88m | 6:32AM0.28m | ||||||||||||||||||
Low Tide | 9:22AM-0.03m | 00:03AM0.13m | 10:03AM-0.01m | 1:02AM0.14m | 10:48AM0.03m | 2:03AM0.14m | ||||||||||||||||||
 | | |  | | | | | |  | |  | |  | | |  | | | | | |  | | |
 | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:46 | — |
 | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:53 | — | — | — | — | 6:53 |
— | — | — | — | — | — | — | — | — | 1 | 1 | — | — | 1 | — | — | — | 1 | 1 | 1 | — | 1 | 1 | — | |
Temp °C | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 26 |
29 | 28 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 28 | 28 | 29 | 29 | 29 | 29 | 28 | 29 | 29 | 29 | 29 | 28 | 29 | 28 | 29 | |
Swell 1 Height (m) Direction Period (s) | NNE 8 | SSW 16 | SSW 15 | SSW 15 | NE 7 | NE 7 | NNE 7 | NNE 6 | SSW 15 | SSW 16 | NNE 6 | NNE 6 | NNE 6 | SSW 15 | SSW 15 | NNE 6 | SSW 14 | NNE 6 | SSW 15 | NNE 6 | NNE 6 | NNE 5 | NNE 5 | NNE 5 |
 kJ | 35 | 137 | 196 | 193 | 47 | 47 | 40 | 33 | 242 | 277 | 44 | 42 | 49 | 252 | 242 | 32 | 163 | 31 | 246 | 43 | 59 | 37 | 30 | 22 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | NNE 5 | NNE 8 | NNE 7 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | NNE 6 | NNE 6 | SSW 14 | SSW 14 | SSW 14 | NNE 6 | NNE 6 | SSW 14 | NNE 6 | SSW 14 | NE 6 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 |
| kJ | 135 | 15 | 37 | 36 | 188 | 183 | 183 | 180 | 34 | 36 | 166 | 163 | 163 | 31 | 32 | 163 | 31 | 163 | 35 | 246 | 233 | 210 | 213 | 158 |
Swell 3 Height (m) Direction Period (s) | S 7 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | S 6 | S 6 | SSW 18 | SSW 19 | SW 19 | SSW 16 | SSW 16 | SSE 10 | SSE 6 | SSE 10 | SSW 17 | SSW 17 | SSW 17 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 9 | SSW 18 |
| kJ | 22 | 14 | 13 | 13 | 13 | 12 | 7 | 102 | 251 | 96 | 87 | 87 | 31 | 6 | 33 | 101 | 99 | 101 | 18 | 18 | 17 | 17 | 16 | 102 |
Wind waves Height (m) Direction Period (s) | — | — | N 3 | N 7 | — | — | — | — | — | — | — | — | WSW 9 | N 6 | — | — | — | — | — | — | S 6 | SSE 7 | — | SSW 6 |
| kJ | — | — | 5 | 22 | — | — | — | — | — | — | — | — | 16 | 15 | — | — | — | — | — | — | 7 | 15 | — | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 101 | 101 | 34 | 19 | 11 | 38 | 11 | 11 | 100 | 34 | 38 | 100 | 100 | 11 | 11 | 11 | 100 | 113 | 22 | 24 | 38 | 11 | 18 | 11 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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