Surf Forecasts:
How big are the waves at Kahalu'u Beach Park today (31 Jul):
- Morning surf: Morning surf (31 Jul, local time) - 1.5ft (0.5m), 16s period with SW swell.
- Afternoon surf: Afternoon surf (31 Jul, local time) - 1.5ft (0.5m), 16s period with SW swell.
- Evening surf: Evening surf (31 Jul, local time) - 2ft (0.6m), 15s period with SSW swell.
The current surf forecast for Kahalu'u Beach Park at 12AM is: 0.7m 13s primary swell from a South direction and 0.5m 17s secondary swell from a Southwest direction (forecast issued at 07:00pm July 30). The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Jul) | 1.5ft (0.5m) | 16s |
| Afternoon (31 Jul) | 1.5ft (0.5m) | 16s |
| Evening (31 Jul) | 2ft (0.6m) | 15s |
Table - waves today at Kahalu'u Beach Park. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | |||||||||||||||||
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) | S 13 | SSW 13 | SSW 13 | S 13 | S 13 | SW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SW 15 | SSW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 163 | 176 | 176 | 163 | 163 | 127 | 124 | 119 | 152 | 148 | 109 | 144 | 104 | 96 | 91 | 91 | 91 | 93 | 96 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross-off | glassy | glassy | cross-on | glassy | cross-on | cross-on | glassy | cross | cross-on | cross | cross | cross-on | cross-on | glassy | cross-off |
High Tide | 4:43PM0.81m | 4:54AM0.43m | 5:10PM0.77m | 5:36AM0.47m | 5:36PM0.72m | ||||||||||||||
Low Tide | 11:34PM0.12m | 10:21AM0.11m | 11:57PM0.11m | 11:02AM0.16m | |||||||||||||||
 |  | | | | | | |  | |  | | | | | | | | | |
 | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — |
 | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 26 | 25 | 26 | 27 | 28 | 28 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 31 | 30 | 31 | 30 | 29 | 30 | 30 | 32 | 31 | 30 | 29 | 29 | 29 | 30 | 28 | 28 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 13 | SSW 13 | SSW 13 | S 13 | S 13 | S 13 | S 12 | S 12 | SSW 15 | SSW 15 | SW 15 | SSW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 |
| kJ | 163 | 176 | 176 | 163 | 163 | 119 | 112 | 106 | 152 | 148 | 109 | 144 | 104 | 96 | 91 | 91 | 91 | 93 | 96 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | S 12 | S 12 | S 12 | S 12 | SSW 12 | S 12 | S 11 | S 11 | S 11 | S 12 | S 12 |
| kJ | 152 | 108 | 138 | 129 | 127 | 127 | 124 | 119 | 104 | 72 | 72 | 72 | 46 | 42 | 39 | 39 | 41 | 42 | 44 |
Swell 3 Height (m) Direction Period (s) | SW 13 | SW 13 | S 12 | WSW 8 | SSE 6 | SW 12 | S 10 | SW 8 | W 8 | S 11 | S 11 | SSW 4 | SSW 4 | W 14 | SW 8 | SW 8 | W 13 | S 14 | S 15 |
| kJ | 7 | 7 | 3 | 7 | 4 | 6 | 2 | 3 | 1 | 2 | 2 | 3 | 2 | 4 | 3 | 3 | 3 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | W 8 | NW 8 | — | — | SW 8 | SW 8 | W 8 | WNW 3 | WSW 3 | SW 3 | WSW 3 | NW 3 | — | WSW 8 | W 2 | WNW 3 | W 3 | W 8 | WNW 4 |
| kJ | 12 | 11 | — | — | 11 | 11 | 12 | 2 | 2 | 2 | 3 | 5 | — | 6 | 1 | 3 | 1 | 12 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 138 | 25 | 0 | 0 | 0 | 0 | 125 | 0 | 13 | 25 | 0 | 1 | 4 | 1 | 99 | 99 | 25 | 0 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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