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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 Thursday 30 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
25.7° 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 4PM is: 0.4m 11s primary swell from a Northwest direction (forecast issued at 07:00am April 30). An open ocean swell of 1.1m 6s is not directed at the surf break, a second open ocean swell of 0.4m 16s is not directed at the surf break, a second open ocean swell of 0.9m 6s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Apr) | 1ft (0.3m) | 12s |
| Afternoon (30 Apr) | 1.5ft (0.4m) | 12s |
| Evening (30 Apr) | 1.5ft (0.4m) | 11s |
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 Thu afternoon, min 23°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 30 | Friday 1 | Saturday 2 | Sun 3 | |||||||||||||||||||||
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 11 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NNE 8 | NW 12 | NW 11 | WNW 11 | S 16 | NW 16 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NW 14 | NW 14 | SSW 16 | |
19 | 23 | 23 | 36 | 44 | 31 | 31 | 31 | 43 | 31 | 0 | 35 | 31 | 24 | 0 | 69 | 129 | 88 | 139 | 136 | 134 | 128 | 114 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | glassy | on | cross-on | glassy | glassy | cross | cross | glassy | glassy | on | cross-on | glassy | glassy | glassy | cross | cross-off | glassy | on | on | glassy | cross-off | glassy | cross-on | |
High Tide | 2:42AM0.48m | 3:33PM0.79m | 3:14AM0.44m | 4:04PM0.81m | 3:46AM0.40m | 4:36PM0.81m | ||||||||||||||||||
Low Tide | 8:36AM0.06m | 10:13PM0.18m | 8:59AM0.06m | 10:54PM0.18m | 9:24AM0.06m | 11:36PM0.18m | ||||||||||||||||||
 |  | | | | | | | | |  | | |  | | | | | | | | | | | |
 | 5:56 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | 5:54 |
 | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:46 | — | — | 6:47 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 24 | 25 | 26 | 25 | 24 | 24 | 23 | 23 | 24 | 25 | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 26 | 25 | 24 | 24 |
24 | 26 | 26 | 27 | 27 | 26 | 25 | 23 | 25 | 27 | 27 | 26 | 28 | 27 | 27 | 26 | 26 | 27 | 27 | 26 | 29 | 26 | 27 | 27 | |
Swell 1 Height (m) Direction Period (s) | NW 11 | NNE 6 | NNE 6 | S 16 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 8 | NNE 8 | NNE 8 | NNE 7 | NNE 7 | NNE 8 | NNE 8 | NNE 8 | NE 8 | NNE 7 | NNE 7 | NNE 6 | SSW 16 | NNE 8 |
 kJ | 19 | 49 | 56 | 81 | 91 | 88 | 51 | 40 | 43 | 63 | 120 | 113 | 117 | 86 | 86 | 93 | 80 | 78 | 60 | 70 | 61 | 43 | 337 | 50 |
Swell 2 Height (m) Direction Period (s) | SSW 12 | NW 12 | S 16 | NW 12 | S 16 | NW 11 | S 15 | S 15 | S 15 | S 15 | S 15 | S 16 | SSW 16 | SSW 16 | S 16 | S 14 | S 14 | S 14 | S 14 | NW 15 | NW 15 | SSW 15 | NNE 6 | SSW 16 |
| kJ | 15 | 23 | 81 | 36 | 82 | 31 | 70 | 110 | 110 | 112 | 68 | 188 | 87 | 86 | 129 | 96 | 206 | 153 | 153 | 136 | 134 | 222 | 49 | 201 |
Swell 3 Height (m) Direction Period (s) | NNW 13 | S 16 | NW 12 | SSW 12 | NW 11 | S 16 | NW 11 | NW 11 | NW 11 | NW 11 | SSW 17 | NW 12 | SSW 13 | SSW 13 | S 13 | NW 16 | NW 16 | NW 16 | NW 15 | S 14 | S 14 | NW 14 | NW 14 | S 13 |
| kJ | 16 | 47 | 23 | 14 | 44 | 45 | 31 | 31 | 43 | 31 | 97 | 35 | 60 | 60 | 55 | 69 | 129 | 88 | 139 | 153 | 107 | 128 | 114 | 125 |
Wind waves Height (m) Direction Period (s) | NNE 5 | — | WSW 2 | NNE 6 | — | SSE 4 | S 3 | — | N 5 | — | — | — | NW 11 | WNW 11 | — | SSE 9 | SSE 9 | — | NW 10 | — | — | SSE 6 | — | — |
| kJ | 37 | — | 1 | 56 | — | 6 | 4 | — | 19 | — | — | — | 31 | 24 | — | 15 | 26 | — | 17 | — | — | 8 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 18 | 1 | 105 | 103 | 1 | 1 | 19 | 19 | 1 | 1 | 103 | 103 | 1 | 1 | 1 | 11 | 0 | 0 | 100 | 100 | 0 | 0 | 0 | 19 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
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Ocean Swells (m)- Wind Speed (km/h)
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