Surf Forecasts:
How big are the waves at Kahalu'u Beach Park today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 2ft (0.6m), 16s period with SSW swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 1.5ft (0.5m), 16s period with SW swell.
- Evening surf: Evening surf (21 Aug, local time) - 2ft (0.6m), 16s period with SW swell.
The current surf forecast for Kahalu'u Beach Park at 12PM is: 0.5m 16s primary swell from a Southwest direction and 0.5m 10s secondary swell from a West direction (forecast issued at 07:00am August 21). The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 2ft (0.6m) | 16s |
| Afternoon (21 Aug) | 1.5ft (0.5m) | 16s |
| Evening (21 Aug) | 2ft (0.6m) | 16s |
Table - waves today at Kahalu'u Beach Park. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Sun night. Warm (max 28°C on Fri morning, min 26°C on Fri night). Wind will be generally light. | |||||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 17 | SSW 17 | SW 16 | SW 16 | SW 16 | SSW 16 | SW 16 | SW 16 | SSW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | WNW 11 | WNW 11 | WNW 11 | SSW 15 | S 15 | SSW 15 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 298 | 186 | 127 | 124 | 122 | 171 | 261 | 261 | 166 | 121 | 119 | 119 | 119 | 110 | 109 | 110 | 109 | 109 | 111 | 103 | 128 | 110 | 188 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-on | on | cross-on | glassy | glassy | cross | glassy | cross-off | on | on | glassy | cross-off | glassy | glassy | cross-off | glassy | cross-on | cross-on | glassy | glassy | cross-off |
High Tide | 12:03PM0.64m | 11:25PM0.26m | 12:57PM0.68m | 00:50AM0.28m | 1:39PM0.72m | ||||||||||||||||||
Low Tide | 3:13AM0.18m | 8:42PM0.25m | 4:42AM0.17m | 8:46PM0.22m | 5:56AM0.15m | 9:01PM0.19m | |||||||||||||||||
 |  |  | | |  | |  | | | | | | | | | | | | |  |  | | |
 | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | — |
Temp °C | 27 | 27 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 27 |
Feels °C | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 30 | 30 | 31 | 32 | 31 | 31 | 31 | 32 | 30 | 29 | 32 | 32 | 32 | 31 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SSW 17 | SW 16 | W 11 | SW 16 | SSW 16 | SW 16 | SW 16 | SSW 16 | SW 16 | SW 16 | W 10 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 10 | SSW 15 |
| kJ | 298 | 186 | 127 | 57 | 122 | 171 | 261 | 261 | 166 | 121 | 119 | 52 | 64 | 59 | 80 | 80 | 82 | 109 | 111 | 103 | 76 | 85 | 188 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | SW 16 | W 11 | W 11 | W 10 | W 10 | S 13 | W 10 | W 10 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SSW 16 | SSW 16 | SSW 15 | S 15 | WNW 10 |
| kJ | 52 | 51 | 50 | 124 | 58 | 57 | 52 | 51 | 89 | 52 | 50 | 119 | 119 | 110 | 109 | 110 | 109 | 107 | 99 | 83 | 128 | 110 | 62 |
Swell 3 Height (m) Direction Period (s) | S 11 | S 11 | S 11 | S 11 | S 13 | S 13 | S 13 | S 13 | W 10 | S 12 | S 12 | S 12 | S 12 | S 12 | SSW 16 | SSE 13 | SSE 13 | SSE 13 | SW 14 | SW 14 | SW 14 | SW 14 | SSE 13 |
| kJ | 37 | 37 | 37 | 21 | 55 | 55 | 54 | 89 | 52 | 45 | 46 | 46 | 45 | 45 | 51 | 55 | 57 | 57 | 54 | 54 | 33 | 53 | 55 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SW 9 | SW 9 | — | — | WSW 2 | SW 3 | WSW 3 | — | NNW 5 | NW 3 | — | — | — | NNW 4 | — | SSW 9 | — |
| kJ | — | — | — | — | — | — | 12 | 12 | — | — | 1 | 2 | 1 | — | 2 | 2 | — | — | — | 2 | — | 8 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 0 | 0 | 55 | 55 | 13 | 0 | 0 | 2 | 0 | 0 | 55 | 52 | 0 | 0 | 0 | 0 | 0 | 0 | 52 | 52 | 0 | 0 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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