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Surf Forecasts:
Generals surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 1 am Saturday 21 Mar 2026 HSTForecast update in hr min s Forecast update imminent
Generals surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Generals sea temperature is
25.1° C
(Which is slightly warmer than usual)How big are the waves at Generals today?
The current surf forecast for Generals at 6AM is: 0.5m 12s primary swell from a West-northwest direction and 0.7m 4s secondary swell from a South direction (forecast issued at 01:00am March 21). An open ocean swell of 0.6m 12s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 1.5ft (0.5m) | 18s |
| Afternoon (21 Mar) | 1.5ft (0.5m) | 18s |
| Evening (21 Mar) | 1.5ft (0.5m) | 17s |
Table - waves today at Generals. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| 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 | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 19 | 19 | 12 | 18 | 18 | 18 | 18 | 12 | 17 | 17 | 11 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 181 | 173 | 85 | 193 | 184 | 180 | 152 | 111 | 164 | 147 | 114 | 155 | 162 | 291 | 268 | 325 | 261 | 257 | 189 | 183 | 154 | 154 | 114 | 113 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross | glass | glass | glass | cross- on | cross | glass | glass | glass | glass | cross- off | glass | cross- on | cross | cross- on |
High Tide / height (m) | 4:55AM 0.35 | 6:03PM 0.61 | 5:33AM 0.28 | 6:59PM 0.61 | 6:17AM 0.22 | |||||||||||||||||||
Low Tide / height (m) | 11:41PM 0.08 | 10:59AM -0.05 | 12:49AM 0.11 | 11:32AM -0.04 | 2:16AM 0.13 | 12:12PM -0.02 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:26 | - | - | - | - | - | - | - | 6:24 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - | - | - | - | - | - | - | 6:35 | - |
 | |  |  |  | | |  | | |  |  |  | | | | | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 1 | 1 | 3 | 7 | 4 | - | 1 | - | - | 1 | 1 | 2 | 3 | 1 | 2 | 1 |
| Temp. °C | 25 | 25 | 24 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 23 | 22 | 24 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 23 | 23 | 23 |
| Feels °C (?) | 25 | 25 | 24 | 26 | 26 | 26 | 28 | 27 | 28 | 28 | 26 | 25 | 27 | 27 | 26 | 28 | 27 | 26 | 26 | 26 | 27 | 25 | 25 | 25 |
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Live Wave Height (m)
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Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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