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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 Friday 22 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
26.5° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Mahai'ula Bay today?
The current surf forecast for Mahai'ula Bay at 5PM is: 0.3m 11s primary swell from a Southwest direction (forecast issued at 01:00pm May 22). An open ocean swell of 1.3m 6s is not directed at the surf break, a second open ocean swell of 0.5m 18s is not directed at the surf break. The wind direction is predicted to be cross-shore.
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 26°C on Fri afternoon, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Fri 22 | Saturday 23 | Sunday 24 | Mon 25 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
WNW 8 | S 18 | SW 11 | S 17 | NNE 7 | NNE 7 | S 16 | S 16 | NNE 6 | NW 11 | NNE 7 | NNW 16 | NNW 10 | S 14 | NNE 9 | NNE 9 | NNW 13 | S 14 | NW 12 | NW 12 | NW 12 | NNE 8 | NW 12 | NNW 12 | |
14 | 0 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 24 | 10 | 0 | 0 | 0 | 17 | 0 | 24 | 23 | 23 | 0 | 22 | 13 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross | glassy | cross-off | cross-off | cross-off | glassy | on | cross-on | cross-off | cross | glassy | cross-off | cross-off | glassy | |
High Tide | 9:38AM0.34m | 9:13PM0.68m | 11:07AM0.41m | 10:10PM0.62m | 12:10PM0.51m | 11:04PM0.55m | ||||||||||||||||||
Low Tide | 1:55PM0.25m | 4:46AM0.13m | 3:40PM0.31m | 5:24AM0.11m | 5:26PM0.33m | 5:57AM0.10m | ||||||||||||||||||
 | |  |  | | |  | | | | | |  | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — |
 | — | — | 6:54 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:55 | — | — | — | — | 6:55 |
— | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 26 | 25 | 26 | 25 | 25 | 24 | 24 | 25 | 25 | 25 | 26 | 24 | 23 | 24 | 24 | 24 | 25 | 26 | 26 | 25 | 24 | 24 | 24 | 25 |
27 | 27 | 25 | 26 | 26 | 26 | 23 | 25 | 27 | 26 | 24 | 26 | 23 | 24 | 24 | 26 | 26 | 26 | 26 | 26 | 26 | 24 | 24 | 27 | |
Swell 1 Height (m) Direction Period (s) | NNE 6 | S 14 | NNE 6 | S 17 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | NNE 7 | NNE 8 | NNE 6 | NE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 |
 kJ | 103 | 97 | 122 | 137 | 190 | 190 | 188 | 183 | 109 | 218 | 198 | 222 | 51 | 77 | 157 | 154 | 154 | 147 | 179 | 143 | 173 | 165 | 140 | 105 |
Swell 2 Height (m) Direction Period (s) | S 14 | S 18 | S 18 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | S 16 | SSE 4 | S 15 | S 15 | NE 9 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 14 | S 14 |
| kJ | 101 | 154 | 150 | 61 | 58 | 58 | 57 | 57 | 131 | 2 | 212 | 212 | 77 | 198 | 134 | 132 | 132 | 132 | 188 | 191 | 194 | 117 | 188 | 175 |
Swell 3 Height (m) Direction Period (s) | S 18 | SSE 12 | S 14 | SSE 4 | SSW 11 | SSE 12 | SSE 12 | SSE 5 | SSE 5 | NW 11 | SSE 11 | NNW 16 | S 15 | SSE 4 | S 16 | S 16 | NNW 13 | S 16 | NW 12 | NW 12 | NW 12 | S 15 | NW 12 | NNW 12 |
| kJ | 98 | 28 | 93 | 2 | 11 | 14 | 14 | 2 | 2 | 4 | 12 | 24 | 209 | 3 | 47 | 46 | 17 | 46 | 24 | 23 | 23 | 39 | 22 | 13 |
Wind waves Height (m) Direction Period (s) | WNW 8 | NNE 6 | SW 11 | NNE 6 | NNE 7 | NNE 7 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | — | SSE 11 | NNW 10 | NNE 5 | — | — | — | — | — | — | — | SSE 6 | SSE 6 | — |
| kJ | 14 | 96 | 19 | 149 | 165 | 165 | 137 | 145 | 164 | 270 | — | 40 | 10 | 37 | — | — | — | — | — | — | — | 8 | 16 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 136 | 136 | 15 | 1 | 1 | 1 | 11 | 1 | 1 | 113 | 11 | 1 | 1 | 1 | 1 | 1 | 100 | 103 | 1 | 11 | 1 | 1 | 1 | 1 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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