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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 Thursday 21 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)Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 27°C on Thu afternoon, min 23°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SW 15 | S 16 | SSW 15 | NNE 7 | NNE 7 | S 15 | S 15 | NNE 6 | NNE 6 | NNE 6 | S 18 | SW 11 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | NNW 16 | S 15 | NNW 14 | S 14 | S 14 | |
8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 30 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 0 | 21 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross | cross | glassy | glassy | cross-off | cross-off | glassy | cross-on | cross | cross-off | glassy | cross-off | cross-off | cross-off | |
High Tide | 8:17PM0.76m | 9:38AM0.34m | 9:13PM0.68m | 11:07AM0.41m | 10:10PM0.62m | |||||||||||||||||||
Low Tide | 12:36PM0.17m | 4:00AM0.14m | 1:55PM0.25m | 4:46AM0.13m | 3:40PM0.31m | 5:24AM0.11m | ||||||||||||||||||
 |  | |  |  | | | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:45 | — |
 | — | — | 6:54 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | 6:55 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 26 | 26 | 27 | 25 | 25 | 25 | 24 | 24 | 25 | 25 | 26 | 25 | 24 | 24 | 23 | 24 | 25 | 26 | 26 | 24 | 24 | 24 | 24 | 25 |
28 | 27 | 27 | 25 | 27 | 26 | 23 | 24 | 27 | 26 | 26 | 25 | 26 | 26 | 22 | 23 | 26 | 27 | 26 | 25 | 26 | 25 | 25 | 26 | |
Swell 1 Height (m) Direction Period (s) | SSW 16 | S 16 | SSW 15 | S 15 | NNE 7 | NNE 6 | S 15 | S 14 | S 14 | S 14 | S 18 | NNE 6 | S 16 | NE 8 | S 16 | S 16 | S 15 | S 15 | NE 9 | NNE 7 | NNE 8 | S 14 | NE 9 | NE 9 |
 kJ | 201 | 124 | 174 | 159 | 170 | 122 | 155 | 106 | 101 | 97 | 150 | 126 | 190 | 50 | 188 | 183 | 109 | 218 | 75 | 209 | 217 | 198 | 77 | 75 |
Swell 2 Height (m) Direction Period (s) | SSE 13 | SSE 13 | SSE 5 | SSE 5 | SSW 15 | S 15 | SSE 4 | S 18 | S 18 | S 18 | S 14 | S 17 | SSW 13 | S 16 | SSW 13 | SSW 13 | S 16 | NE 9 | S 15 | S 15 | S 15 | SSE 4 | S 14 | S 14 |
| kJ | 33 | 33 | 5 | 5 | 169 | 157 | 4 | 102 | 98 | 98 | 93 | 137 | 58 | 190 | 57 | 57 | 131 | 46 | 212 | 212 | 209 | 5 | 134 | 132 |
Swell 3 Height (m) Direction Period (s) | SW 15 | SSW 12 | SSW 12 | SSW 12 | SSE 5 | S 4 | SSE 12 | SSE 4 | SSE 4 | SSE 12 | SSE 4 | SSW 14 | SSE 4 | SSW 13 | SSE 12 | S 4 | SSE 4 | SSE 4 | SSE 11 | NNW 16 | S 4 | NNW 14 | SSE 4 | S 16 |
| kJ | 8 | 29 | 29 | 29 | 4 | 4 | 14 | 2 | 2 | 14 | 2 | 61 | 2 | 58 | 14 | 2 | 2 | 2 | 12 | 24 | 2 | 21 | 4 | 46 |
Wind waves Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | NNE 7 | SSE 12 | — | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | SW 11 | NNE 6 | NNE 6 | NNE 7 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | SSE 11 | SSE 4 | NNE 8 | NNE 6 | NNE 5 |
| kJ | 122 | 118 | 140 | 192 | 119 | — | 96 | 120 | 145 | 136 | 126 | 30 | 122 | 72 | 183 | 122 | 122 | 126 | 158 | 47 | 7 | 193 | 47 | 31 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 136 | 113 | 18 | 11 | 1 | 1 | 18 | 18 | 11 | 11 | 18 | 11 | 1 | 24 | 1 | 1 | 453 | 444 | 11 | 1 | 1 | 1 | 1 | 1 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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