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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 Tuesday 12 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)How big are the waves at Mahai'ula Bay today?
The current surf forecast for Mahai'ula Bay at 6PM is: 0.3m 2s primary swell from a West-southwest direction (forecast issued at 01:00pm May 12). An open ocean swell of 0.8m 6s is not directed at the surf break, a second open ocean swell of 0.4m 15s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 1.5ft (0.4m) | 11s |
| Afternoon (12 May) | 1ft (0.3m) | 11s |
| Evening (12 May) | 1.5ft (0.4m) | 10s |
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 26°C on Wed afternoon, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 12 | Wednesday 13 | Thursday 14 | Fri 15 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
NW 11 | NW 11 | WSW 2 | NW 10 | SSW 15 | SSW 15 | SSW 14 | S 14 | SSW 14 | SW 15 | NNE 6 | SW 15 | NNE 6 | SW 14 | WNW 2 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | |
42 | 18 | 1 | 28 | 0 | 0 | 0 | 0 | 0 | 34 | 0 | 34 | 0 | 33 | 1 | 42 | 41 | 58 | 77 | 106 | 102 | 93 | 113 | 87 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | glassy | cross | glassy | glassy | glassy | cross | glassy | cross-on | cross-on | cross-on | cross | glassy | glassy | glassy | glassy | |
High Tide | 1:21PM0.62m | 00:39AM0.54m | 1:59PM0.73m | 1:26AM0.50m | 2:38PM0.82m | 2:12AM0.45m | ||||||||||||||||||
Low Tide | 7:16PM0.27m | 7:03AM0.05m | 8:19PM0.22m | 7:34AM0.01m | 9:17PM0.18m | |||||||||||||||||||
 | | |  |  | | |  | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — |
 | — | — | 6:51 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | 6:52 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 26 | 25 | 24 | 24 | 24 | 25 | 26 | 26 | 26 | 25 | 24 | 24 | 24 | 24 |
27 | 27 | 27 | 28 | 27 | 27 | 26 | 26 | 27 | 27 | 28 | 27 | 27 | 26 | 26 | 26 | 28 | 28 | 28 | 27 | 27 | 27 | 28 | 27 | |
Swell 1 Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NW 13 |
 kJ | 34 | 40 | 41 | 42 | 38 | 38 | 32 | 32 | 24 | 47 | 60 | 53 | 42 | 33 | 33 | 34 | 36 | 38 | 38 | 40 | 38 | 40 | 40 | 87 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | S 16 | S 16 | S 15 | SSW 15 | SSW 15 | SSW 14 | S 14 | SSW 14 | SSW 14 | S 13 | SSW 13 | S 10 | S 13 | S 13 | S 12 | S 12 | NW 15 | NW 15 | NW 15 | NW 14 | NW 14 | NW 13 | SW 16 |
| kJ | 83 | 127 | 76 | 70 | 71 | 71 | 70 | 106 | 40 | 62 | 31 | 35 | 19 | 54 | 53 | 26 | 26 | 58 | 77 | 106 | 102 | 93 | 113 | 64 |
Swell 3 Height (m) Direction Period (s) | NW 11 | NW 11 | SSW 14 | SSW 14 | S 15 | S 15 | S 14 | SSE 9 | S 14 | SW 15 | SSW 13 | SW 15 | S 13 | SW 14 | S 5 | NW 16 | NW 16 | S 12 | S 12 | SSE 12 | S 12 | S 12 | SSE 11 | S 5 |
| kJ | 42 | 18 | 41 | 41 | 68 | 38 | 37 | 17 | 32 | 34 | 35 | 34 | 30 | 33 | 4 | 42 | 41 | 25 | 25 | 47 | 69 | 69 | 43 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | WSW 2 | NW 10 | — | S 4 | — | — | — | — | S 4 | SSE 10 | — | NW 2 | WNW 2 | S 4 | — | WSW 2 | — | — | — | — | — | NNE 7 |
| kJ | — | — | 1 | 28 | — | 1 | — | — | — | — | 1 | 22 | — | 1 | 1 | 1 | — | 1 | — | — | — | — | — | 26 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 100 | 103 | 1 | 11 | 11 | 11 | 38 | 100 | 1 | 11 | 1 | 18 | 1 | 19 | 1 | 100 | 136 | 38 | 21 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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