Surf Forecasts:
How big are the waves at Kapoho Bay today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 6ft (1.9m), 8s period with E swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 4.5ft (1.4m), 8s period with ENE swell.
- Evening surf: Evening surf (18 Sep, local time) - 6ft (1.9m), 8s period with E swell.
The current surf forecast for Kapoho Bay at 3AM is: 1.9m 8s primary swell from a East direction and 0.7m 18s secondary swell from a South-southwest direction (forecast issued at 07:00pm September 17). The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 6ft (1.9m) | 8s |
| Afternoon (18 Sep) | 4.5ft (1.4m) | 8s |
| Evening (18 Sep) | 6ft (1.9m) | 8s |
Table - waves today at Kapoho Bay. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Warm (max 27°C on Thu night, min 25°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Thu 17 | Friday 18 | Saturday 19 | |||||||||||||||||
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) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | SSW 16 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 549 | 509 | 485 | 485 | 476 | 481 | 481 | 273 | 481 | 493 | 505 | 505 | 517 | 524 | 524 | 524 | 524 | 524 | 537 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 4:25PM0.49m | 9:18AM0.72m | 11:00AM0.74m | 10:45PM0.39m | |||||||||||||||
Low Tide | 00:23AM0.24m | 1:37AM0.29m | 7:42PM0.37m | ||||||||||||||||
 |  |  | | |  | |  | |  | | | | | | | | | | |
 | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | 6:20 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:17 | — | — |
mm | 5 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 26 | 26 | 27 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 27 | 27 | 28 | 26 | 27 | 27 | 27 | 28 | 26 | 27 | 26 | 26 | 26 | 26 | 25 | 25 | 26 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | ESE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 |
| kJ | 549 | 509 | 485 | 485 | 476 | 481 | 481 | 223 | 481 | 493 | 505 | 505 | 517 | 524 | 524 | 524 | 524 | 524 | 537 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 18 | SSW 15 | S 18 | SSW 15 | SSW 16 | SSW 16 | SSW 16 |
| kJ | 195 | 188 | 283 | 276 | 261 | 219 | 249 | 240 | 237 | 234 | 298 | 186 | 104 | 89 | 160 | 126 | 269 | 341 | 269 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SW 11 | SW 11 | SW 11 | SW 11 | S 11 | SSW 16 | SSW 15 | SSW 18 | SSW 15 | SSW 18 | SSE 8 | SSE 8 | SSW 13 |
| kJ | 9 | 18 | 9 | 9 | 9 | 9 | 5 | 5 | 5 | 5 | 2 | 25 | 84 | 108 | 84 | 106 | 7 | 7 | 34 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | ENE 8 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 273 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 35 | 33 | 35 | 35 | 35 | 33 | 38 | 35 | 38 | 33 | 33 | 33 | 33 | 33 | 210 | 121 | 35 | 35 | 35 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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