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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 Saturday 16 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
25.9° C
(Which is slightly warmer than usual)| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 May) | - | - |
| Afternoon (16 May) | 1.5ft (0.4m) | 3s |
| Evening (16 May) | - | - |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 27°C on Sun morning, min 25°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 16 | Sunday 17 | Monday 18 | Tue 19 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
NW 12 | SW 15 | SW 15 | NW 3 | SW 14 | SSW 17 | SW 14 | N 4 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 19 | SSW 16 | SSW 14 | SSW 14 | N 6 | N 6 | |
49 | 83 | 0 | 2 | 0 | 0 | 73 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 24 | 15 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | glassy | cross-on | on | on | cross | cross | glassy | cross-on | cross-off | glassy | cross-on | cross-on | cross-on | glassy | cross-off | glassy | |
High Tide | 2:58AM0.40m | 4:02PM0.94m | 3:44AM0.36m | 4:48PM0.95m | 4:33AM0.32m | 5:37PM0.93m | ||||||||||||||||||
Low Tide | 8:43AM-0.03m | 11:07PM0.14m | 9:22AM-0.03m | 00:03AM0.13m | 10:03AM-0.01m | 1:02AM0.14m | ||||||||||||||||||
 |  | | | | | | | | | | |  |  | | | | | | |  | | |  | |
 | 5:48 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | 5:47 |
 | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | 6:53 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 1 | |
Temp °C | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 27 | 27 | 27 | 26 | 25 | 25 | 25 | 26 | 27 | 26 | 26 | 26 | 25 | 25 |
28 | 27 | 27 | 27 | 27 | 26 | 28 | 28 | 30 | 28 | 30 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 30 | 29 | 29 | 30 | 28 | 29 | |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 8 | NNE 8 | SSE 6 | S 6 | S 5 | S 6 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 15 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | SSW 14 |
 kJ | 32 | 35 | 37 | 39 | 36 | 23 | 21 | 17 | 144 | 137 | 135 | 137 | 196 | 193 | 30 | 49 | 34 | 37 | 37 | 60 | 67 | 64 | 45 | 233 |
Swell 2 Height (m) Direction Period (s) | SSE 12 | SW 15 | SW 15 | S 5 | SW 14 | SSE 11 | SSW 17 | SSW 17 | S 6 | NNE 8 | NNE 8 | NNE 8 | NNE 5 | NNE 5 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | NNE 6 |
| kJ | 45 | 83 | 107 | 21 | 103 | 40 | 99 | 96 | 21 | 23 | 23 | 40 | 18 | 19 | 188 | 183 | 183 | 180 | 174 | 193 | 166 | 163 | 163 | 33 |
Swell 3 Height (m) Direction Period (s) | NW 12 | SSE 12 | SSE 12 | SW 15 | SSW 17 | SSW 17 | SW 14 | NE 7 | NE 7 | S 6 | SSE 6 | SSE 6 | SSW 21 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSW 18 | SSW 19 | SW 19 | SSW 16 | SSW 16 | SSE 10 | SSE 10 |
| kJ | 49 | 46 | 47 | 106 | 92 | 95 | 73 | 19 | 27 | 20 | 13 | 12 | 180 | 13 | 13 | 8 | 7 | 102 | 251 | 96 | 87 | 87 | 31 | 31 |
Wind waves Height (m) Direction Period (s) | — | — | SSE 4 | NW 3 | NNE 8 | NNE 8 | N 3 | N 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 6 | N 6 |
| kJ | — | — | 5 | 2 | 60 | 44 | 6 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 24 | 15 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 19 | 99 | 54 | 57 | 57 | 99 | 19 | 13 | 11 | 19 | 100 | 103 | 38 | 38 | 11 | 19 | 11 | 24 | 100 | 34 | 100 | 11 | 1 | 11 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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