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Kahalu'u surf Forecast / HAW – Big Island / USA
48hr Weather and Surf, issued 1 am Monday 20 May 2024 HST
Forecast update in hr min s Update imminent
Kahalu'u surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kahalu'u sea temperature is 25.8°C (Statistics for 20 May 1981-2005 - mean: 25.3 °C max: 26.5 °C min: 24.3 °C)
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Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Kahalu'u surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kahalu'u sea temperature is 25.8°C (Statistics for 20 May 1981-2005 - mean: 25.3 °C max: 26.5 °C min: 24.3 °C)
How big are the waves at Kahalu'u today?
The current surf forecast for Kahalu'u at 5AM is: 0.9m 16s primary swell from a South-southwest direction and 0.4m 11s secondary swell from a Northwest direction (forecast issued at 01:00am May 20). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 2.5ft (0.8m) | 15s |
| Afternoon (20 May) | 2.5ft (0.8m) | 14s |
| Evening (20 May) | 2.5ft (0.8m) | 14s |
Table - waves today at Kahalu'u. (Swell directed towards the surf break)
Updates in hr min s Update imminent
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Swell Height Map |  |    |    |    |    |    |    |    |    | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 16 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 18 | 18 | 18 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 18 | 18 | 18 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 16 | 20 | 13 | 13 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Energy (?) | 522 | 516 | 416 | 300 | 272 | 284 | 280 | 280 | 276 | 200 | 192 | 132 | 128 | 126 | 126 | 126 | 126 | 125 | 86 | 82 | 80 | 80 | 154 | 79 | 78 | 76 | 103 | 127 | 127 | 127 | 127 | 125 | 127 | 148 | 150 | 150 | 150 | 143 | 124 | 124 | 125 | 169 | 124 | 122 | 118 | 112 | 109 | 106 | 104 | 104 | 54 | 52 | 52 | 53 | 94 | 75 | 44 | 44 | 49 | 64 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | glass | cross- off | cross- on | cross- on | cross- on | cross- on | cross- off | cross- off | glass | cross- on | cross- on | on | cross | cross- off | glass | cross- on | cross- on | glass | cross | cross- on | cross- on | on | cross- on | cross- on | cross- on | on | on | on | cross | cross | cross- on | on | on | glass | cross | cross- on | cross- on | on | cross- on | cross- on | on | glass | cross | cross- on | on | cross- on | on | on | glass | cross- on | on | on | on | on | on | on | cross- on | cross- on |
High Tide / height (m) | 1:23AM 0.46 | 2:34PM 0.73 | 2:00AM 0.42 | 3:05PM 0.79 | 2:37AM 0.39 | 3:39PM 0.82 | 3:13AM 0.36 | 4:15PM 0.84 | 3:49AM 0.33 | 4:55PM 0.85 | 4:27AM 0.30 | 5:37PM 0.84 | 5:12AM 0.28 | 6:23PM 0.82 | 6:11AM 0.27 | |||||||||||||||||||||||||||||||||||||||||||||
Low Tide / height (m) | 8:24PM 0.26 | 7:29AM 0.08 | 9:12PM 0.23 | 7:54AM 0.06 | 9:56PM 0.20 | 8:21AM 0.05 | 10:41PM 0.18 | 8:50AM 0.04 | 11:26PM 0.18 | 9:22AM 0.03 | 12:15AM 0.18 | 9:57AM 0.04 | 1:08AM 0.18 | 10:35AM 0.06 | 2:06AM 0.17 | |||||||||||||||||||||||||||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Sunrise | - | - | - | 5:46 | - | - | - | - | - | - | - | 5:46 | - | - | - | - | - | - | - | 5:46 | - | - | - | - | - | - | - | 5:45 | - | - | - | - | - | - | - | 5:45 | - | - | - | - | - | - | - | 5:45 | - | - | - | - | - | - | - | 5:45 | - | - | - | - | - | - | - | 5:45 |
| Sunset | - | - | - | - | - | - | 6:53 | - | - | - | - | - | - | - | 6:53 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:55 | - | - | - | - | - | - | - | 6:55 | - | - | - | - | - | - | - | 6:55 | - | - | - | - | - |
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Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | 1 | 1 | 1 | - | - | 1 | 2 | 1 | 1 | 1 | 1 | - | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 |
| Temp. °C | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 25 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 |
| Feels °C (?) | 25 | 26 | 28 | 28 | 27 | 25 | 25 | 28 | 25 | 26 | 27 | 26 | 26 | 26 | 28 | 26 | 28 | 25 | 26 | 28 | 27 | 28 | 27 | 27 | 27 | 27 | 27 | 26 | 27 | 28 | 28 | 28 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 24 | 25 | 25 | 25 |
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