Surf Forecasts:
How big are the waves at Kahalu'u Beach Park today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 1.5ft (0.5m), 18s period with SW swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 1.5ft (0.5m), 18s period with SW swell.
- Evening surf: Evening surf (20 Aug, local time) - 1.5ft (0.5m), 16s period with SW swell.
The current surf forecast for Kahalu'u Beach Park at 11AM is: 0.5m 18s primary swell from a Southwest direction and 0.4m 11s secondary swell from a West-northwest direction (forecast issued at 07:00am August 20). The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 1.5ft (0.5m) | 18s |
| Afternoon (20 Aug) | 1.5ft (0.5m) | 18s |
| Evening (20 Aug) | 1.5ft (0.5m) | 16s |
Table - waves today at Kahalu'u Beach Park. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Fri afternoon. Warm (max 28°C on Thu morning, min 26°C on Thu night). Wind will be generally light. | |||||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | |||||||||||||||||||||
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 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SSW 17 | 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 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 106 | 152 | 150 | 154 | 143 | 135 | 133 | 188 | 298 | 186 | 127 | 124 | 122 | 171 | 261 | 261 | 166 | 121 | 119 | 119 | 118 | 110 | 109 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | on | cross-on | glassy | glassy | glassy | glassy | cross-on | cross-on | on | on | cross-on | glassy | glassy | cross-on | glassy | glassy | cross-on | on | on | glassy | cross |
High Tide | 10:49AM0.62m | 12:03PM0.64m | 11:25PM0.26m | 12:57PM0.68m | |||||||||||||||||||
Low Tide | 2:06AM0.16m | 3:13AM0.18m | 8:42PM0.25m | 4:42AM0.17m | 8:46PM0.22m | ||||||||||||||||||
 |  | | | | | | | | | |  |  |  | | | | | | | | | | |
 | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | 6:47 | — | — | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:46 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 27 | 27 | 26 |
Feels °C | 30 | 31 | 31 | 31 | 32 | 31 | 31 | 30 | 30 | 31 | 32 | 31 | 31 | 30 | 31 | 30 | 31 | 32 | 32 | 31 | 31 | 31 | 30 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SSW 17 | SW 17 | SSW 17 | SW 16 | W 11 | SW 16 | SSW 16 | SW 16 | SW 16 | SSW 16 | SW 16 | SW 16 | SW 16 | W 10 | WNW 10 | WNW 10 |
| kJ | 106 | 152 | 150 | 154 | 143 | 135 | 133 | 188 | 298 | 186 | 127 | 57 | 122 | 171 | 261 | 261 | 166 | 121 | 119 | 119 | 56 | 62 | 83 |
Swell 2 Height (m) Direction Period (s) | WNW 11 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | SW 16 | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | SW 16 | SW 15 | SW 15 |
| kJ | 40 | 40 | 40 | 23 | 40 | 61 | 61 | 56 | 52 | 51 | 50 | 124 | 58 | 57 | 52 | 51 | 52 | 52 | 50 | 52 | 118 | 110 | 109 |
Swell 3 Height (m) Direction Period (s) | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 11 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | SSW 16 |
| kJ | 41 | 21 | 21 | 21 | 21 | 38 | 21 | 21 | 37 | 37 | 37 | 21 | 55 | 85 | 54 | 85 | 87 | 45 | 46 | 46 | 45 | 45 | 51 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 2 | — | SW 9 | SW 9 | — | NW 3 | NW 3 | SW 3 | SSW 3 | SW 3 | SW 3 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 12 | 12 | — | 2 | 1 | 2 | 4 | 2 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 0 | 0 | 55 | 55 | 0 | 0 | 0 | 0 | 7 | 25 | 52 | 55 | 13 | 0 | 0 | 6 | 0 | 0 | 52 | 52 | 25 | 0 | 1 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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