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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 02 Sep 2025 HST
How big are the waves at Mahai'ula Bay today?
The current surf forecast for Mahai'ula Bay at 6PM is: 0.2m 3s primary swell from a West-northwest direction (forecast issued at 01:00pm September 02). An open ocean swell of 0.4m 5s is not directed at the surf break, a second open ocean swell of 0.4m 9s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (02 Sep) | 1ft (0.3m) | 10s |
| Afternoon (02 Sep) | 1ft (0.3m) | 15s |
| Evening (02 Sep) | 1.5ft (0.4m) | 14s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Tuesday 02 | Wednesday 03 | Thursday 04 | Friday 05 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 15 | 3 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 4 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 35 | 52 | 1 | 67 | 63 | 62 | 61 | 61 | 57 | 53 | 55 | 52 | 52 | 36 | 21 | 20 | 29 | 20 | 19 | 19 | 20 | 18 | 24 | 3 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross | cross- off | cross- off | cross | cross | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | glass | glass | cross- on | cross- on | cross- on | on | on | glass | glass | glass |
High Tide / height (m) | 12:52PM 0.70 | 12:58AM 0.29 | 1:33PM 0.75 | 1:42AM 0.34 | 2:09PM 0.79 | 2:20AM 0.40 | ||||||||||||||||||
Low Tide / height (m) | 8:34PM 0.19 | 5:58AM 0.14 | 8:49PM 0.16 | 6:56AM 0.11 | 9:08PM 0.13 | 7:45AM 0.09 | ||||||||||||||||||
Tuesday 02 | Wednesday 03 | Thursday 04 | Friday 05 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - | 6:09 |
| Sunset | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:36 | - | - | - | - | - |
 | | |  |  | | |  | | | | | | | |  | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 26 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 26 | 25 | 25 | 25 | 25 | 24 | 24 | 25 | 26 | 26 | 26 | 25 | 25 | 24 | 25 | 26 |
| Feels °C (?) | 26 | 26 | 26 | 27 | 27 | 26 | 26 | 26 | 27 | 26 | 27 | 27 | 28 | 27 | 27 | 28 | 28 | 28 | 28 | 27 | 28 | 27 | 28 | 28 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for HAW - Big Island
The wind is still cross-on at Mahai'ula Bay (light winds from the W at Kailua/Kona Airport 6 km from Mahai'ula Bay). A 0.8m local chop from the WNW
2 h 26 min ago
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