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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 am Thursday 28 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
26.1° C
(Which is slightly warmer than usual)How big are the waves at Mahai'ula Bay today (28 May):
- Morning surf: Morning surf (28 May, local time) - 1.5ft (0.5m), 13s period with NW swell.
- Afternoon surf: Afternoon surf (28 May, local time) - 1.5ft (0.5m), 12s period with NW swell.
The current surf forecast for Mahai'ula Bay at 6AM is: 0.6m 13s primary swell from a Northwest direction (forecast issued at 01:00am May 28). An open ocean swell of 0.7m 7s is not directed at the surf break, a second open ocean swell of 0.6m 12s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 May) | 1.5ft (0.5m) | 13s |
| Afternoon (28 May) | 1.5ft (0.5m) | 12s |
| Evening (28 May) | - | - |
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 morning, min 23°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 28 | Friday 29 | Saturday 30 | ||||||||||||||||||||||
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 | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | S 22 | N 6 | N 6 | S 20 | S 20 | NW 11 | S 19 | S 19 | S 18 | S 18 | S 18 | S 17 | S 17 | S 17 | S 16 | S 16 | S 16 | S 16 | |
142 | 140 | 138 | 80 | 73 | 72 | 0 | 26 | 25 | 0 | 0 | 31 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-off | cross | cross-on | cross-on | cross-on | glassy | glassy | glassy | cross-off | glassy | cross-on | cross | cross-on | cross | cross | glassy | glassy | glassy | cross-on | cross-on | cross-on | cross-on | glassy | |
High Tide | 1:29AM0.40m | 2:40PM0.78m | 2:11AM0.37m | 3:13PM0.81m | 2:50AM0.35m | 3:46PM0.82m | ||||||||||||||||||
Low Tide | 7:22AM0.07m | 9:38PM0.21m | 7:52AM0.07m | 10:18PM0.19m | 8:23AM0.06m | 10:57PM0.17m | ||||||||||||||||||
 | |  | |  | | | |  | | | | | | | | | | | | | | | | |
 | — | 5:45 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — | — | 5:43 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 6:58 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 24 | 25 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 |
26 | 25 | 26 | 27 | 28 | 26 | 27 | 26 | 25 | 24 | 27 | 26 | 26 | 26 | 27 | 26 | 27 | 27 | 27 | 26 | 26 | 27 | 26 | 27 | |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 6 | NNE 6 | NNE 6 | S 21 | S 20 | S 20 | S 20 | S 19 | S 19 | S 18 | S 18 | S 18 | S 17 | S 17 | S 17 | S 16 | S 16 | S 16 | S 16 |
 kJ | 57 | 40 | 40 | 40 | 38 | 52 | 34 | 33 | 436 | 525 | 624 | 775 | 760 | 728 | 668 | 646 | 632 | 617 | 603 | 569 | 542 | 529 | 516 | 509 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 21 | NNE 6 | NNE 7 | NNE 7 | NNE 11 | NNE 8 | NNE 11 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 9 | NNE 9 | NNE 8 | NNE 8 | NNE 8 |
| kJ | 116 | 107 | 105 | 103 | 103 | 102 | 98 | 449 | 33 | 42 | 46 | 130 | 55 | 133 | 62 | 80 | 43 | 39 | 64 | 67 | 50 | 42 | 62 | 42 |
Swell 3 Height (m) Direction Period (s) | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | S 22 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 11 |
| kJ | 142 | 140 | 138 | 80 | 73 | 72 | 236 | 95 | 64 | 61 | 61 | 60 | 60 | 39 | 37 | 64 | 71 | 68 | 44 | 44 | 43 | 42 | 41 | 39 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 6 | — | — | N 6 | N 6 | — | — | NW 11 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 6 | — | — | 26 | 25 | — | — | 31 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 11 | 100 | 100 | 1 | 38 | 100 | 19 | 18 | 18 | 100 | 105 | 38 | 23 | 18 | 18 | 18 | 18 | 103 | 103 | 100 | 99 | 18 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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