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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 28 Apr 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
25.6° 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: 0.2m 10s primary swell from a North-northwest direction (forecast issued at 01:00pm April 28). An open ocean swell of 0.6m 7s is not directed at the surf break, a second open ocean swell of 0.4m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Apr) | 0.5ft (0.2m) | 10s |
| Afternoon (28 Apr) | 0.5ft (0.2m) | 10s |
| Evening (28 Apr) | 1ft (0.3m) | 14s |
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 3mm), mostly falling on Tue afternoon. Warm (max 26°C on Tue afternoon, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 28 | Wednesday 29 | Thursday 30 | Fri 1 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
NNW 10 | NNW 10 | NNW 10 | WNW 14 | NW 14 | NW 13 | SW 12 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | |
11 | 10 | 10 | 21 | 29 | 28 | 0 | 43 | 55 | 53 | 52 | 36 | 21 | 19 | 19 | 23 | 23 | 46 | 44 | 31 | 31 | 31 | 31 | 31 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-on | glassy | cross-off | glassy | glassy | glassy | on | glassy | cross | glassy | glassy | cross | cross-off | cross-off | cross-on | cross-on | glassy | glassy | glassy | glassy | cross-off | glassy | |
High Tide | 2:32PM0.68m | 2:08AM0.52m | 3:02PM0.75m | 2:42AM0.48m | 3:33PM0.79m | 3:14AM0.44m | ||||||||||||||||||
Low Tide | 8:44PM0.21m | 8:13AM0.06m | 9:30PM0.19m | 8:36AM0.06m | 10:13PM0.18m | |||||||||||||||||||
 | |  |  |  | | | | | |  | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:54 | — |
 | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | 6:46 |
— | — | 1 | — | 1 | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 26 | 26 | 25 | 25 | 24 | 24 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 24 |
27 | 26 | 26 | 28 | 26 | 27 | 25 | 27 | 27 | 27 | 27 | 27 | 26 | 24 | 23 | 25 | 27 | 27 | 28 | 26 | 25 | 25 | 23 | 26 | |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NE 7 | NNE 7 | NNE 5 | NNE 5 | NW 12 | NW 12 | NNE 6 | NNE 6 | NNE 6 | NNE 5 | NNE 6 | NW 12 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | S 15 | S 15 |
 kJ | 29 | 30 | 29 | 30 | 47 | 42 | 19 | 26 | 55 | 53 | 49 | 68 | 47 | 23 | 6 | 23 | 49 | 53 | 58 | 75 | 66 | 55 | 110 | 112 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | NE 7 | NW 13 | SW 12 | SW 11 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | S 16 | S 16 | S 16 | NW 11 | NW 11 | S 15 | S 15 | NW 11 | NW 11 |
| kJ | 38 | 37 | 37 | 37 | 36 | 36 | 12 | 43 | 21 | 20 | 52 | 36 | 21 | 19 | 19 | 47 | 81 | 81 | 44 | 31 | 70 | 110 | 31 | 31 |
Swell 3 Height (m) Direction Period (s) | NNW 10 | NNW 10 | NNW 10 | WNW 14 | NW 14 | NW 13 | SW 12 | SW 12 | SSE 10 | SSE 10 | SSE 10 | S 18 | S 18 | NNE 9 | NE 9 | SSW 12 | NW 12 | NW 11 | S 16 | S 16 | NW 11 | NW 11 | SSW 18 | SSW 11 |
| kJ | 11 | 10 | 10 | 21 | 29 | 28 | 36 | 36 | 10 | 10 | 10 | 25 | 55 | 8 | 12 | 14 | 23 | 46 | 82 | 45 | 31 | 31 | 62 | 12 |
Wind waves Height (m) Direction Period (s) | — | WSW 2 | — | — | — | — | — | — | NNE 5 | NNE 5 | — | SW 9 | SSW 9 | WNW 2 | NNE 5 | NNE 5 | SSW 8 | — | — | SSW 8 | — | — | NNE 6 | NNE 8 |
| kJ | — | 1 | — | — | — | — | — | — | 27 | 42 | — | 3 | 8 | 1 | 12 | 46 | 7 | — | — | 6 | — | — | 56 | 114 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 105 | 105 | 105 | 105 | 1 | 1 | 18 | 1 | 113 | 0 | 1 | 1 | 1 | 19 | 18 | 24 | 100 | 1 | 1 | 1 | 1 | 1 | 11 | 1 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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