Surf Forecasts:
How big are the waves at Waipio Valley today (21 Aug):
- Morning surf: Morning surf (21 Aug, local time) - 2.5ft (0.8m), 7s period with NE swell.
- Afternoon surf: Afternoon surf (21 Aug, local time) - 5ft (1.6m), 6s period with E swell.
- Evening surf: Evening surf (21 Aug, local time) - 4.5ft (1.4m), 7s period with E swell.
The current surf forecast for Waipio Valley at 4AM is: 0.9m 8s primary swell from a East direction and 0.7m 7s secondary swell from a Northeast direction, 0.3m 10s secondary swell from a West direction (forecast issued at 07:00pm August 20). The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 2.5ft (0.8m) | 7s |
| Afternoon (21 Aug) | 5ft (1.6m) | 6s |
| Evening (21 Aug) | 4.5ft (1.4m) | 7s |
Table - waves today at Waipio Valley. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 29°C on Fri morning, min 26°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | |||||||||||||||||
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) | NE 7 | NE 7 | E 8 | NE 7 | E 8 | NE 7 | ENE 7 | E 5 | E 6 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 91 | 67 | 90 | 55 | 108 | 54 | 191 | 152 | 163 | 179 | 189 | 212 | 239 | 283 | 378 | 470 | 439 | 401 | 405 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross |
High Tide | 11:52AM0.74m | 12:36PM0.79m | |||||||||||||||||
Low Tide | 2:58AM0.24m | 4:24AM0.22m | 8:02PM0.38m | ||||||||||||||||
 |  | |  | |  | |  | | | | | | | | | | | | |
 | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 27 | 26 | 27 | 29 | 28 | 28 | 27 | 27 | 26 | 26 | 27 | 29 | 29 | 28 | 26 | 26 |
Feels °C | 31 | 31 | 30 | 31 | 29 | 29 | 30 | 29 | 30 | 28 | 28 | 27 | 26 | 27 | 29 | 29 | 28 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | W 10 | W 10 | W 11 | NNE 7 | W 10 | NNE 7 | W 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 |
| kJ | 91 | 67 | 67 | 55 | 46 | 54 | 31 | 35 | 37 | 15 | 32 | 15 | 17 | 19 | 19 | 19 | 21 | 21 | 20 |
Swell 2 Height (m) Direction Period (s) | E 8 | W 11 | W 11 | E 8 | W 10 | ESE 8 | W 9 | W 9 | W 9 | W 11 | NNE 7 | W 10 | W 9 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 |
| kJ | 41 | 9 | 21 | 35 | 18 | 23 | 1 | 2 | 2 | 36 | 15 | 31 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | W 11 | W 8 | W 8 | W 11 | W 10 | W 10 | N 8 | N 8 | N 8 | W 9 | W 9 | W 9 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | W 15 |
| kJ | 9 | 5 | 5 | 21 | 2 | 18 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 4 |
Wind waves Height (m) Direction Period (s) | — | E 8 | E 8 | E 4 | E 8 | ESE 5 | ENE 7 | E 5 | E 6 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 |
| kJ | — | 58 | 90 | 15 | 108 | 31 | 191 | 152 | 163 | 179 | 189 | 212 | 239 | 283 | 378 | 470 | 439 | 401 | 405 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 27 | 27 | 27 | 27 | 23 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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