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Surf Forecasts:
Coast Guard surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 7 pm Tuesday 30 Sep 2025 HST
How big are the waves at Coast Guard today?
The current surf forecast for Coast Guard at 9PM is: 0.4m 13s primary swell from a North direction (forecast issued at 07:00pm September 30). An open ocean swell of 0.6m 12s is not directed at the surf break, a second open ocean swell of 1.7m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Sep) | - | - |
| Afternoon (30 Sep) | 1ft (0.3m) | 12s |
| Evening (30 Sep) | 1.5ft (0.4m) | 13s |
Table - waves today at Coast Guard. (Swell directed towards the surf break)
Tuesday 30 | Wednesday 01 | Thursday 02 | Friday 03 | |||||||||||||||||||||
| 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 | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 13 | 13 | 8 | 8 | 8 | 13 | 13 | 13 | 12 | 11 | 11 | 10 | 10 | 6 | 9 | 9 | 10 | 6 | 6 | 6 | 6 | 10 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 25 | 31 | 83 | 72 | 165 | 165 | 165 | 162 | 155 | 141 | 125 | 116 | 75 | 83 | 94 | 25 | 26 | 18 | 91 | 71 | 60 | 60 | 28 | 27 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 11:11PM 0.30 | 11:46AM 0.75 | 12:04AM 0.37 | 12:21PM 0.78 | 12:41AM 0.46 | 12:52PM 0.80 | ||||||||||||||||||
Low Tide / height (m) | 7:50PM 0.28 | 3:29AM 0.25 | 7:23PM 0.25 | 4:59AM 0.23 | 7:25PM 0.22 | 6:00AM 0.20 | ||||||||||||||||||
Tuesday 30 | Wednesday 01 | Thursday 02 | Friday 03 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:13 | - | - |
| Sunset | 6:12 | - | - | - | - | - | - | - | 6:10 | - | - | - | - | - | - | - | 6:09 | - | - | - | - | - | - | - |
 |  | | | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 24 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 |
| Feels °C (?) | 25 | 24 | 23 | 24 | 24 | 24 | 25 | 24 | 25 | 24 | 24 | 24 | 23 | 24 | 24 | 25 | 27 | 26 | 25 | 25 | 25 | 24 | 26 | 25 |
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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
Continuing clean conditions at Coast Guard (light winds from the W at BUOY-KWHH1 24 km from Coast Guard). 1.0m 5s windswell from the ENE with a 0.5m 10s swell from the NE and a 0.3m 11s groundswell from the W. 3 swells combining to make bigger set waves.
24 km away, 1 h 0 min ago
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