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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 7 am 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 12PM is: 0.3m 2s primary swell from a West-southwest direction (forecast issued at 07:00am 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 14s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 26°C on Fri morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 22 | Saturday 23 | Sunday 24 | Mon 25 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
S 15 | NNE 6 | WSW 2 | S 18 | S 18 | S 17 | NNE 7 | S 16 | S 16 | S 16 | S 16 | NW 11 | S 15 | NNW 16 | S 15 | WNW 2 | NNE 9 | S 14 | NNW 13 | S 14 | NW 12 | NW 12 | NW 12 | NNE 8 | |
0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 24 | 0 | 1 | 0 | 0 | 17 | 0 | 24 | 23 | 23 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-on | cross | cross | cross-off | cross-off | glassy | cross-off | cross-off | glassy | cross | glassy | cross-off | cross-off | cross-off | cross-off | glassy | glassy | cross-on | cross | cross | glassy | cross-off | |
High Tide | 9:38AM0.34m | 9:13PM0.68m | 11:07AM0.41m | 10:10PM0.62m | 12:10PM0.51m | 11:04PM0.55m | ||||||||||||||||||
Low Tide | 4:00AM0.14m | 1:55PM0.25m | 4:46AM0.13m | 3:40PM0.31m | 5:24AM0.11m | 5:26PM0.33m | ||||||||||||||||||
 |  | |  | |  | | | | | | | | | | | | | | | | | | | |
 | 5:46 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | 5:45 |
 | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:55 | — | — | 6:55 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 25 | 26 | 26 | 26 | 25 | 24 | 24 | 24 | 25 | 26 | 25 | 24 | 24 | 24 | 24 | 23 | 24 | 26 | 26 | 26 | 25 | 24 | 24 |
24 | 25 | 27 | 27 | 25 | 25 | 25 | 26 | 23 | 25 | 28 | 27 | 26 | 26 | 24 | 25 | 23 | 26 | 27 | 27 | 27 | 26 | 26 | 25 | |
Swell 1 Height (m) Direction Period (s) | S 15 | S 14 | NNE 6 | S 14 | S 18 | NNE 6 | S 16 | S 16 | S 16 | S 16 | NNE 8 | S 15 | NE 8 | NNE 8 | NNE 8 | NNE 9 | NNE 9 | NNE 9 | NNE 9 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 |
 kJ | 155 | 106 | 118 | 97 | 150 | 149 | 190 | 190 | 188 | 183 | 48 | 218 | 74 | 248 | 193 | 157 | 154 | 129 | 154 | 143 | 169 | 143 | 143 | 179 |
Swell 2 Height (m) Direction Period (s) | SSE 4 | S 18 | S 14 | S 18 | S 14 | S 17 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | S 15 | SSE 12 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 |
| kJ | 4 | 102 | 101 | 154 | 93 | 137 | 58 | 58 | 57 | 57 | 109 | 13 | 212 | 212 | 209 | 198 | 134 | 132 | 132 | 132 | 186 | 191 | 194 | 117 |
Swell 3 Height (m) Direction Period (s) | SSE 12 | SSE 4 | S 18 | SSE 12 | SSE 12 | SSW 14 | SSW 11 | SSE 12 | SSE 12 | SSE 5 | S 16 | NW 11 | SSE 11 | NNW 16 | S 5 | S 3 | S 16 | S 16 | NNW 13 | S 16 | NW 12 | NW 12 | NW 12 | S 15 |
| kJ | 14 | 4 | 98 | 28 | 14 | 61 | 11 | 14 | 14 | 2 | 131 | 4 | 12 | 24 | 2 | 2 | 47 | 46 | 17 | 46 | 24 | 23 | 23 | 39 |
Wind waves Height (m) Direction Period (s) | NNE 6 | NNE 6 | WSW 2 | NNE 6 | NNE 6 | — | NNE 7 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | SSE 11 | SSE 11 | WNW 2 | — | — | — | — | — | — | W 2 | — |
| kJ | 96 | 115 | 1 | 118 | 145 | — | 165 | 122 | 141 | 160 | 126 | 192 | 154 | 47 | 40 | 1 | — | — | — | — | — | — | 1 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 18 | 1 | 113 | 113 | 11 | 1 | 1 | 1 | 11 | 1 | 1 | 11 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 103 | 11 | 1 | 1 | 1 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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