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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 29 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 7PM is: 0.4m 12s primary swell from a Northwest direction and 0.5m 5s secondary swell from a North direction (forecast issued at 01:00pm April 29). An open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Apr) | 1.5ft (0.4m) | 13s |
| Afternoon (29 Apr) | 1.5ft (0.4m) | 12s |
| Evening (29 Apr) | 1.5ft (0.4m) | 12s |
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 Wed afternoon. Warm (max 25°C on Wed afternoon, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Wed 29 | Thursday 30 | Friday 1 | Sat 2 | |||||||||||||||||||||
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 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 | S 15 | NW 11 | NW 11 | S 15 | NW 12 | W 3 | NNE 8 | NNE 8 | NW 16 | NW 16 | NW 16 | |
55 | 53 | 52 | 36 | 21 | 20 | 19 | 23 | 23 | 46 | 44 | 31 | 31 | 0 | 31 | 31 | 0 | 35 | 2 | 0 | 0 | 69 | 129 | 88 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross | cross | cross-on | cross | cross | cross-off | glassy | cross-on | cross-on | glassy | glassy | glassy | glassy | cross-off | glassy | cross-on | on | glassy | glassy | glassy | glassy | cross | glassy | |
High Tide | 3:02PM0.75m | 2:42AM0.48m | 3:33PM0.79m | 3:14AM0.44m | 4:04PM0.81m | 3:46AM0.40m | ||||||||||||||||||
Low Tide | 8:13AM0.06m | 9:30PM0.19m | 8:36AM0.06m | 10:13PM0.18m | 8:59AM0.06m | 10:54PM0.18m | ||||||||||||||||||
 |  |  |  |  | | | | | | |  | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — |
 | — | — | 6:45 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | 6:46 |
— | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 26 | 25 | 25 | 24 | 24 | 23 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 |
28 | 26 | 26 | 26 | 25 | 23 | 25 | 26 | 26 | 26 | 27 | 26 | 26 | 25 | 24 | 25 | 26 | 27 | 27 | 26 | 27 | 26 | 25 | 26 | |
Swell 1 Height (m) Direction Period (s) | NW 12 | NNE 5 | NNE 5 | NNE 6 | NNE 5 | SSE 10 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | S 15 | NNE 6 | NNE 8 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 |
 kJ | 55 | 28 | 32 | 27 | 33 | 19 | 47 | 47 | 53 | 58 | 72 | 85 | 53 | 41 | 31 | 112 | 53 | 117 | 114 | 117 | 123 | 120 | 93 | 66 |
Swell 2 Height (m) Direction Period (s) | SW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 12 | S 16 | S 16 | S 16 | NW 11 | S 15 | S 15 | S 15 | NE 8 | NE 8 | S 16 | SSW 16 | SSW 16 | S 16 | S 14 | S 14 | S 14 |
| kJ | 21 | 53 | 52 | 36 | 21 | 20 | 19 | 23 | 81 | 81 | 82 | 31 | 70 | 110 | 110 | 18 | 30 | 188 | 87 | 86 | 129 | 96 | 206 | 153 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SW 11 | SSE 10 | S 18 | S 18 | NNW 13 | SSW 12 | S 16 | NW 12 | NW 11 | NW 11 | S 16 | NW 11 | S 4 | NW 11 | NW 11 | S 15 | NW 12 | SSW 13 | SSW 13 | S 13 | NW 16 | NW 16 | NW 16 |
| kJ | 20 | 20 | 10 | 25 | 55 | 17 | 15 | 47 | 23 | 46 | 44 | 45 | 31 | 4 | 31 | 31 | 68 | 35 | 60 | 60 | 55 | 69 | 129 | 88 |
Wind waves Height (m) Direction Period (s) | NNE 5 | — | NW 4 | N 5 | N 6 | NNE 5 | — | SSE 10 | WSW 8 | N 6 | — | SSE 4 | S 3 | — | N 6 | NNE 6 | S 9 | W 2 | W 3 | N 8 | — | SSE 9 | — | — |
| kJ | 24 | — | 1 | 13 | 15 | 46 | — | 32 | 7 | 23 | — | 4 | 3 | — | 23 | 43 | 6 | 1 | 2 | 57 | — | 15 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 105 | 139 | 19 | 19 | 19 | 11 | 1 | 113 | 100 | 1 | 1 | 1 | 100 | 1 | 18 | 100 | 103 | 1 | 1 | 1 | 0 | 18 | 0 |
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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