Surf Forecasts:
How big are the waves at Kahalu'u Beach Park today (20 Oct):
- Morning surf: Morning surf (20 Oct, local time) - 1ft (0.3m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (20 Oct, local time) - 0.5ft (0.2m), 18s period with S swell.
- Evening surf: Evening surf (20 Oct, local time) - 0.5ft (0.2m), 17s period with S swell.
The current surf forecast for Kahalu'u Beach Park at 2AM is: 0.4m 16s primary swell from a Southwest direction and 0.3m 11s secondary swell from a South direction, 0.2m 2s secondary swell from a West-northwest direction (forecast issued at 07:00pm October 19). The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Oct) | 1ft (0.3m) | 16s |
| Afternoon (20 Oct) | 0.5ft (0.2m) | 18s |
| Evening (20 Oct) | 0.5ft (0.2m) | 17s |
Table - waves today at Kahalu'u Beach Park. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 9mm), mostly falling on Mon night. Warm (max 27°C on Tue morning, min 25°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Mon 19 | Tuesday 20 | Wednesday 21 | |||||||||||||||||
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 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | S 18 | S 18 | S 18 | S 18 | S 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
Wave Graph  | |||||||||||||||||||
 kJ | 36 | 38 | 39 | 64 | 65 | 41 | 25 | 25 | 25 | 24 | 23 | 39 | 39 | 39 | 37 | 34 | 55 | 54 | 33 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | cross | cross-off | glassy | cross-on | on | glassy | cross-off | glassy | glassy | glassy | cross | on | on | glassy | cross-on | glassy |
High Tide | 00:29AM0.36m | 11:50AM0.63m | 1:02AM0.44m | 12:31PM0.62m | |||||||||||||||
Low Tide | 6:40PM0.18m | 4:55AM0.27m | 6:58PM0.15m | 6:11AM0.25m | 7:16PM0.11m | ||||||||||||||
 |  | | |  |  | |  | | | | | | | | | | |  | |
 | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — |
 | 5:57 | — | — | — | — | — | — | — | 5:57 | — | — | — | — | — | — | — | 5:55 | — | — |
mm | 1 | 1 | 1 | 1 | — | — | — | — | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | — | — |
Temp °C | 27 | 26 | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 |
Feels °C | 31 | 29 | 29 | 29 | 27 | 29 | 29 | 28 | 30 | 28 | 28 | 28 | 29 | 28 | 28 | 29 | 29 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | SW 16 | SW 16 | S 11 | S 11 | S 11 | S 11 | S 11 | SSW 15 | S 11 | S 13 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 |
| kJ | 25 | 25 | 39 | 64 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 13 | 39 | 39 | 37 | 34 | 55 | 54 | 33 |
Swell 2 Height (m) Direction Period (s) | NW 12 | SW 16 | S 11 | S 11 | SW 16 | SW 16 | SSW 15 | SSW 14 | SSW 14 | S 11 | SSW 15 | SW 16 | S 13 | S 12 | S 12 | S 12 | SSW 10 | S 11 | S 16 |
| kJ | 22 | 38 | 22 | 21 | 65 | 41 | 22 | 19 | 19 | 21 | 23 | 39 | 12 | 12 | 12 | 11 | 9 | 10 | 19 |
Swell 3 Height (m) Direction Period (s) | SW 15 | NW 12 | WNW 11 | WNW 11 | WNW 11 | S 15 | S 18 | S 18 | S 18 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 | SSW 10 | S 12 | SSW 10 | S 11 |
| kJ | 36 | 21 | 12 | 12 | 12 | 17 | 25 | 25 | 25 | 24 | 23 | 21 | 20 | 20 | 20 | 10 | 11 | 10 | 9 |
Wind waves Height (m) Direction Period (s) | — | — | — | WNW 2 | — | — | — | W 3 | WNW 3 | WNW 3 | WNW 3 | — | — | S 4 | SSW 2 | SW 2 | — | — | — |
| kJ | — | — | — | 1 | — | — | — | 2 | 3 | 2 | 1 | — | — | 1 | 1 | 1 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 25 | 25 | 1 | 0 | 0 | 25 | 125 | 0 | 0 | 0 | 0 | 0 | 1 | 99 | 99 | 0 | 13 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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