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Coast Guard surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 7 pm Saturday 21 Dec 2024 HSTForecast update in hr min s Forecast update imminent
Coast Guard surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Coast Guard sea temperature is
25.8° C
(Which is slightly warmer than usual)How big are the waves at Coast Guard today?
The current surf forecast for Coast Guard at 11PM is: 1.0m 13s primary swell from a North direction (forecast issued at 07:00pm December 21). An open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Dec) | - | - |
| Afternoon (21 Dec) | 4.5ft (1.3m) | 15s |
| Evening (21 Dec) | 3.5ft (1.1m) | 14s |
Table - waves today at Coast Guard. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sun 29 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 | 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 | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Swell Height Map |    |    |    |    |    |    |    |    |    | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 14 | 14 | 13 | 12 | 14 | 24 | 21 | 20 | 19 | 18 | 17 | 16 | 16 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 6 | 11 | 11 | 11 | 11 | 11 | 7 | 6 | 10 | 6 | 10 | 18 | 7 | 8 | 18 | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Energy (?) | 631 | 478 | 355 | 169 | 111 | 1777 | 3173 | 3021 | 2781 | 1687 | 1267 | 940 | 749 | 596 | 429 | 411 | 272 | 345 | 345 | 141 | 309 | 146 | 104 | 289 | 112 | 121 | 118 | 119 | 114 | 114 | 123 | 72 | 263 | 48 | 50 | 118 | 159 | 159 | 211 | 273 | 246 | 249 | 246 | 249 | 243 | 232 | 223 | 215 | 193 | 138 | 130 | 118 | 116 | 116 | 108 | 104 | 104 | 101 | 99 | 98 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | glass | glass | glass | 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 | 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 | off | cross- off | cross- off | cross- on | glass | 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) | 9:20PM 0.42 | 7:47AM 0.64 | 11:08PM 0.50 | 8:20AM 0.57 | 12:02AM 0.59 | 9:02AM 0.51 | 12:38AM 0.67 | 10:01AM 0.45 | 1:11AM 0.75 | 11:08AM 0.41 | 1:43AM 0.81 | 12:06PM 0.39 | 2:16AM 0.87 | 12:54PM 0.38 | ||||||||||||||||||||||||||||||||||||||||||||||
Low Tide / height (m) | 12:35AM 0.39 | 3:37PM 0.22 | 2:45AM 0.47 | 4:09PM 0.20 | 5:37AM 0.48 | 4:41PM 0.17 | 7:28AM 0.44 | 5:15PM 0.15 | 8:24AM 0.39 | 5:50PM 0.11 | 9:01AM 0.35 | 6:27PM 0.08 | 9:33AM 0.32 | 7:04PM 0.04 | ||||||||||||||||||||||||||||||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | Friday 27 | Saturday 28 | Sun 29 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - |
| Sunset | 5:49 | - | - | - | - | - | - | - | 5:49 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:51 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - |
 |  | | | |  |  | | |  | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 25 | 25 | 24 | 24 | 23 | 23 |
| Feels °C (?) | 23 | 24 | 25 | 26 | 26 | 25 | 24 | 24 | 23 | 22 | 21 | 20 | 20 | 19 | 19 | 19 | 20 | 18 | 18 | 18 | 19 | 19 | 20 | 20 | 20 | 20 | 19 | 20 | 19 | 20 | 20 | 20 | 21 | 21 | 19 | 22 | 22 | 20 | 21 | 21 | 21 | 22 | 23 | 24 | 24 | 24 | 26 | 26 | 25 | 24 | 23 | 22 | 21 | 22 | 23 | 21 | 20 | 20 | 19 | 21 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Coast Guard surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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