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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 Wednesday 20 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 1.3°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 Wed afternoon, min 23°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 14 | SSW 18 | SSW 18 | NNE 6 | S 16 | SSW 16 | S 16 | S 16 | SW 15 | S 16 | NW 2 | S 15 | NNE 7 | NNE 7 | S 15 | NNE 6 | NNE 6 | S 18 | S 18 | NNE 6 | S 16 | S 16 | S 16 | S 16 | |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | glassy | cross-off | glassy | cross-off | cross-off | cross-off | glassy | glassy | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | glassy | cross-off | cross-off | glassy | |
High Tide | 7:22PM0.82m | 7:56AM0.29m | 8:17PM0.76m | 9:38AM0.34m | 9:13PM0.68m | |||||||||||||||||||
Low Tide | 11:37AM0.09m | 3:05AM0.14m | 12:36PM0.17m | 4:00AM0.14m | 1:55PM0.25m | 4:46AM0.13m | ||||||||||||||||||
 |  | |  |  | | | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:46 | — | — | — | — | — | — | — | 5:46 | — |
 | — | — | 6:53 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | 6:54 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 27 | 27 | 27 | 26 | 25 | 25 | 25 | 26 | 26 | 25 | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 26 | 25 | 25 | 24 | 24 | 23 | 24 |
30 | 30 | 30 | 27 | 28 | 26 | 25 | 26 | 28 | 27 | 26 | 25 | 27 | 24 | 24 | 25 | 25 | 26 | 24 | 25 | 26 | 25 | 24 | 26 | |
Swell 1 Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | S 16 | S 16 | SSW 16 | NNE 6 | NNE 6 | S 15 | SSW 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 |
 kJ | 47 | 51 | 82 | 118 | 91 | 88 | 134 | 132 | 201 | 118 | 115 | 159 | 169 | 157 | 155 | 106 | 101 | 97 | 150 | 137 | 190 | 190 | 188 | 183 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 13 | S 16 | SSW 16 | SSW 13 | SSW 13 | SSE 13 | S 16 | SSW 15 | SSE 5 | SSE 5 | SSE 5 | SSE 5 | S 18 | S 18 | S 18 | S 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 |
| kJ | 156 | 107 | 104 | 102 | 135 | 203 | 57 | 56 | 33 | 124 | 174 | 4 | 4 | 5 | 5 | 102 | 98 | 154 | 93 | 61 | 58 | 58 | 57 | 57 |
Swell 3 Height (m) Direction Period (s) | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 13 | SSW 13 | SSE 13 | SSE 13 | SW 15 | SSE 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSE 12 | SSE 5 | SSE 5 | SSE 4 | SSE 12 | SSE 4 | SSE 12 | NE 9 | SSE 12 | SSE 4 |
| kJ | 62 | 103 | 103 | 97 | 67 | 57 | 35 | 17 | 8 | 33 | 29 | 29 | 28 | 28 | 14 | 2 | 2 | 2 | 28 | 2 | 14 | 30 | 14 | 2 |
Wind waves Height (m) Direction Period (s) | — | SSW 9 | SSW 14 | SSW 14 | — | — | NNE 6 | NNE 6 | NNE 6 | — | NW 2 | NNE 6 | NNE 7 | NNE 7 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 6 |
| kJ | — | 8 | 19 | 38 | — | — | 103 | 103 | 111 | — | 2 | 149 | 205 | 222 | 160 | 145 | 115 | 88 | 115 | 170 | 150 | 91 | 142 | 113 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 100 | 113 | 1 | 1 | 1 | 1 | 1 | 1 | 11 | 1 | 3765 | 11 | 1 | 1 | 1 | 1 | 11 | 18 | 13 | 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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