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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 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) | 2ft (0.6m) | 4s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 27°C on Sun afternoon, min 25°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tue 19 | |||||||||||||||||||||
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 2 | NW 3 | SW 14 | N 4 | N 4 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 19 | SSW 6 | SSW 14 | SSW 14 | N 5 | N 5 | SSW 14 | SSW 14 | |
1 | 2 | 0 | 9 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 13 | 13 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross | cross | cross | glassy | cross | cross | cross-on | cross-on | cross-on | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | cross | cross | glassy | glassy | cross-off | glassy | |
High Tide | 4:02PM0.94m | 3:44AM0.36m | 4:48PM0.95m | 4:33AM0.32m | 5:37PM0.93m | 5:26AM0.30m | ||||||||||||||||||
Low Tide | 8:43AM-0.03m | 11:07PM0.14m | 9:22AM-0.03m | 00:03AM0.13m | 10:03AM-0.01m | 1:02AM0.14m | ||||||||||||||||||
 | | |  | | | | | |  | |  | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — |
 | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | 6:53 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 27 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 26 |
27 | 26 | 26 | 26 | 28 | 29 | 28 | 28 | 28 | 28 | 30 | 30 | 28 | 29 | 29 | 28 | 28 | 29 | 28 | 28 | 29 | 29 | 28 | 29 | |
Swell 1 Height (m) Direction Period (s) | NNE 8 | S 5 | SSE 6 | S 6 | S 5 | N 8 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 15 | NE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | SSW 14 | SSW 14 | NNE 6 |
 kJ | 37 | 20 | 46 | 22 | 14 | 41 | 144 | 137 | 135 | 137 | 196 | 193 | 44 | 57 | 40 | 40 | 38 | 49 | 51 | 44 | 33 | 229 | 236 | 33 |
Swell 2 Height (m) Direction Period (s) | SW 15 | NNE 8 | SW 14 | SSW 17 | SSW 17 | S 6 | S 6 | NNE 8 | NNE 8 | NNE 8 | NE 8 | NNE 8 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 15 | SSW 16 | SSW 14 | SSW 14 | SSW 14 | NNE 6 | NNE 6 | SSW 14 |
| kJ | 107 | 39 | 103 | 95 | 99 | 18 | 22 | 33 | 40 | 41 | 31 | 42 | 188 | 183 | 183 | 180 | 174 | 277 | 166 | 163 | 163 | 31 | 30 | 163 |
Swell 3 Height (m) Direction Period (s) | SSE 12 | SW 15 | SSW 17 | SW 14 | SSE 11 | SSW 17 | NE 8 | S 7 | SSE 7 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | S 6 | SSW 18 | SSW 19 | SW 19 | SSW 16 | SSW 16 | SSE 10 | SSE 5 | SSE 10 | SSW 17 |
| kJ | 47 | 106 | 92 | 53 | 40 | 164 | 28 | 22 | 15 | 13 | 12 | 12 | 13 | 12 | 7 | 102 | 251 | 96 | 87 | 87 | 31 | 6 | 31 | 101 |
Wind waves Height (m) Direction Period (s) | SSW 2 | NW 3 | NNE 8 | N 4 | N 4 | — | — | — | — | — | NNE 7 | — | — | — | N 7 | — | — | SSW 6 | — | — | N 5 | N 5 | — | — |
| kJ | 1 | 2 | 45 | 9 | 6 | — | — | — | — | — | 15 | — | — | — | 22 | — | — | 3 | — | — | 13 | 13 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 54 | 57 | 57 | 23 | 18 | 11 | 11 | 19 | 103 | 113 | 34 | 11 | 18 | 100 | 19 | 20 | 100 | 34 | 100 | 38 | 100 | 100 | 11 | 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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