Surf Forecasts:
How big are the waves at Kahalu'u Beach Park today (21 Sep):
- Morning surf: Morning surf (21 Sep, local time) - 2.5ft (0.8m), 13s period with SSW swell.
- Afternoon surf: Afternoon surf (21 Sep, local time) - 2.5ft (0.8m), 13s period with SSW swell.
- Evening surf: Evening surf (21 Sep, local time) - 2.5ft (0.8m), 13s period with SSW swell.
The current surf forecast for Kahalu'u Beach Park at 6PM is: 0.8m 13s primary swell from a South-southwest direction and 0.3m 14s secondary swell from a Southwest direction (forecast issued at 01:00pm September 21). The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Sep) | 2.5ft (0.8m) | 13s |
| Afternoon (21 Sep) | 2.5ft (0.8m) | 13s |
| Evening (21 Sep) | 2.5ft (0.8m) | 13s |
Table - waves today at Kahalu'u Beach Park. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 29mm), heaviest during Thu morning. Warm (max 28°C on Mon afternoon, min 25°C on Wed night). Wind will be generally light. | |||||||||||||||||||||
Mon 21 | Tuesday 22 | Wednesday 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) | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | SW 16 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 239 | 236 | 232 | 229 | 176 | 173 | 162 | 157 | 155 | 155 | 155 | 156 | 123 | 125 | 125 | 123 | 119 | 132 | 124 | 122 | 121 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | cross-on | on | glassy | glassy | glassy | on | on | on | cross-on | glassy | glassy | glassy | glassy | on | glassy | cross | glassy | glassy |
High Tide | 12:55PM0.68m | 1:24AM0.37m | 1:30PM0.70m | 1:57AM0.44m | 2:01PM0.71m | ||||||||||||||||
Low Tide | 8:07PM0.17m | 6:33AM0.18m | 8:22PM0.14m | 7:22AM0.15m | 8:40PM0.11m | ||||||||||||||||
 | | |  |  | | |  | | | | | | | | | |  | |  | | |
 | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | 6:21 | — | — | — | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:19 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 | 1 | — |
Temp °C | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 28 | 27 | 27 | 27 | 27 | 26 | 26 | 27 | 28 | 27 | 26 | 26 | 26 |
Feels °C | 31 | 31 | 32 | 31 | 31 | 30 | 30 | 31 | 31 | 30 | 30 | 31 | 32 | 31 | 31 | 31 | 32 | 32 | 30 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 |
| kJ | 239 | 236 | 232 | 229 | 176 | 173 | 162 | 157 | 155 | 155 | 155 | 156 | 123 | 125 | 125 | 123 | 119 | 110 | 106 | 106 | 106 |
Swell 2 Height (m) Direction Period (s) | WNW 12 | SSW 14 | SW 14 | SW 14 | SW 14 | WNW 11 | W 11 | W 13 | W 13 | SW 19 | SW 19 | SW 17 | SW 17 | SW 17 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 |
| kJ | 14 | 21 | 31 | 30 | 30 | 12 | 10 | 29 | 29 | 58 | 57 | 46 | 75 | 77 | 76 | 75 | 74 | 132 | 124 | 122 | 121 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | WNW 12 | WNW 11 | WNW 11 | WNW 11 | SSW 14 | SW 14 | SSW 14 | SSW 13 | W 13 | W 12 | W 12 | W 12 | W 12 | W 12 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 |
| kJ | 21 | 13 | 12 | 12 | 12 | 19 | 29 | 18 | 18 | 13 | 11 | 25 | 25 | 25 | 25 | 23 | 21 | 21 | 21 | 21 | 9 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 75 | 75 | 0 | 13 | 1 | 0 | 0 | 0 | 99 | 138 | 138 | 99 | 0 | 0 | 0 | 0 | 99 | 0 | 1 | 0 | 0 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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