Surf Forecasts:
How big are the waves at Kahalu'u Beach Park today (21 Jul):
- Morning surf: Morning surf (21 Jul, local time) - 3ft (0.9m), 14s period with S swell.
- Afternoon surf: Afternoon surf (21 Jul, local time) - 3ft (0.9m), 14s period with S swell.
- Evening surf: Evening surf (21 Jul, local time) - 3.5ft (1.0m), 13s period with S swell.
The current surf forecast for Kahalu'u Beach Park at 7PM is: 0.9m 13s primary swell from a South direction and 0.4m 16s secondary swell from a Southwest direction (forecast issued at 01:00pm July 21). The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jul) | 3ft (0.9m) | 14s |
| Afternoon (21 Jul) | 3ft (0.9m) | 14s |
| Evening (21 Jul) | 3.5ft (1.0m) | 13s |
Table - waves today at Kahalu'u Beach Park. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 6mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue afternoon, min 25°C on Tue night). Wind will be generally light. | |||||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||
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) | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | SSW 25 | SSW 24 | SSW 24 | SSW 24 | SSW 23 | SSW 22 | SSW 22 | SSW 21 | SSW 21 | SSW 20 | SSW 20 | SSW 20 | SSW 20 | SSW 19 | SSW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 315 | 307 | 298 | 340 | 335 | 268 | 350 | 444 | 437 | 433 | 550 | 634 | 616 | 611 | 599 | 544 | 517 | 507 | 544 | 657 | 624 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | cross-off | cross | glassy | cross-on | on | cross | cross | cross-on | cross-on | cross-on | cross | cross-on | on | on | cross-off | cross-on |
High Tide | 10:31AM0.59m | 8:10PM0.40m | 11:40AM0.63m | 9:03PM0.33m | 12:37PM0.67m | ||||||||||||||||
Low Tide | 5:17PM0.38m | 3:28AM0.14m | 8:05PM0.33m | 4:18AM0.14m | 8:47PM0.28m | ||||||||||||||||
 | |  |  | |  | | | | | |  | | | | | | | | | | |
 | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | 7:04 | — | — | — | — | — | — | — | 7:04 | — | — | — | — | — | — | — | 7:02 | — | — |
mm | — | — | 1 | 1 | 1 | — | — | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 26 | 27 | 27 | 26 | 26 | 25 |
Feels °C | 29 | 29 | 29 | 28 | 30 | 29 | 28 | 30 | 28 | 29 | 29 | 30 | 28 | 27 | 28 | 28 | 29 | 29 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 11 | S 11 | S 11 | SSW 13 | S 13 | S 12 | SSW 22 | S 12 | SSW 21 | SSW 20 | SSW 20 | SSW 20 | SSW 20 | SSW 19 | SSW 19 |
| kJ | 315 | 307 | 298 | 340 | 335 | 268 | 85 | 82 | 82 | 218 | 206 | 196 | 616 | 180 | 599 | 544 | 517 | 507 | 544 | 657 | 624 |
Swell 2 Height (m) Direction Period (s) | SW 17 | SW 17 | SSW 12 | SW 16 | SSW 26 | SSW 26 | S 13 | SSW 24 | SSW 24 | SSW 24 | SSW 23 | SSW 22 | S 12 | SSW 21 | S 12 | S 11 | S 11 | S 13 | S 13 | SSW 13 | SSW 13 |
| kJ | 74 | 72 | 46 | 63 | 224 | 222 | 125 | 444 | 437 | 433 | 550 | 634 | 184 | 611 | 171 | 125 | 91 | 168 | 171 | 232 | 229 |
Swell 3 Height (m) Direction Period (s) | WNW 11 | WNW 11 | SW 16 | SSW 26 | SW 16 | SW 16 | SSW 25 | S 13 | S 13 | SW 17 | SW 18 | SW 18 | SW 17 | SW 17 | SW 16 | SW 16 | S 15 | SW 16 | SW 16 | SE 14 | NW 9 |
| kJ | 12 | 12 | 67 | 133 | 61 | 61 | 350 | 125 | 123 | 76 | 79 | 78 | 75 | 75 | 64 | 65 | 67 | 40 | 40 | 8 | 14 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | NW 10 | — | — | SSE 9 | NNW 10 | NNW 10 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 16 | — | — | 65 | 10 | 10 | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 94 | 94 | 94 | 125 | 6 | 0 | 1 | 0 | 52 | 52 | 125 | 1 | 6 | 6 | 6 | 1 | 125 | 125 | 125 | 0 | 13 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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