
Surf Forecasts:
How big are the waves at Waimanu Bay today (20 Sep):
- Afternoon surf: Afternoon surf (20 Sep, local time) - 6ft (1.8m), 9s period with ENE swell.
- Evening surf: Evening surf (20 Sep, local time) - 6ft (1.8m), 9s period with ENE swell.
The current surf forecast for Waimanu Bay at 11PM is: 1.8m 9s primary swell from a East-northeast direction and 0.1m 11s secondary swell from a Northwest direction (forecast issued at 07:00pm September 20). An open ocean swell of 0.1m 13s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | - | - |
| Afternoon (20 Sep) | 6ft (1.8m) | 9s |
| Evening (20 Sep) | 6ft (1.8m) | 9s |
Table - waves today at Waimanu Bay. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Mon afternoon. Warm (max 28°C on Tue morning, min 25°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Sun 20 | Monday 21 | Tuesday 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) | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 9 | E 9 | E 9 | E 10 | E 10 |
Wave Graph | |||||||||||||||||||
455 | 506 | 493 | 493 | 442 | 442 | 445 | 445 | 434 | 434 | 424 | 412 | 367 | 412 | 537 | 715 | 818 | 864 | 910 | |
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 | cross |
High Tide | 11:17PM0.42m | 12:20PM0.79m | 00:08AM0.48m | 12:50PM0.82m | |||||||||||||||
Low Tide | 7:09PM0.35m | 4:52AM0.24m | 7:16PM0.31m | 5:47AM0.21m | 7:29PM0.27m | ||||||||||||||
— | — | — | — | 6:11 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — | |
6:20 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:17 | — | — | |
mm | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 25 | 25 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 27 | 26 | 26 |
Feels °C | 25 | 24 | 24 | 25 | 25 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 28 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 11 | NW 11 | NW 11 | NNW 11 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | N 14 | NNW 13 | N 13 | N 12 | NNW 12 | NNW 12 | NNW 11 |
5 | 5 | 5 | 5 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 36 | 59 | 87 | 110 | 150 | 145 | 130 | |
Swell 2 Height (m) Direction Period (s) | W 13 | W 13 | W 13 | W 12 | W 12 | W 12 | W 12 | W 12 | W 11 | W 11 | W 11 | N 15 | NNW 9 | NNW 9 | W 13 | W 13 | W 12 | W 12 | W 12 |
3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 10 | 17 | 8 | 8 | 13 | 13 | 3 | 11 | 11 | |
Swell 3 Height (m) Direction Period (s) | N 8 | NW 9 | — | N 7 | W 12 | W 12 | W 12 | W 12 | N 17 | N 16 | N 15 | W 11 | W 11 | W 13 | NNW 9 | — | W 10 | W 12 | W 12 |
1 | 3 | — | 1 | 3 | 3 | 3 | 3 | 6 | 5 | 5 | 10 | 10 | 3 | 8 | — | 2 | 3 | 11 | |
Wind waves Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 9 | E 9 | E 9 | E 10 | E 10 |
455 | 506 | 493 | 493 | 442 | 442 | 445 | 445 | 434 | 434 | 424 | 412 | 367 | 412 | 537 | 715 | 818 | 864 | 910 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 58 | 58 | 66 | 66 | 60 | 58 | 77 | 98 | 58 | 58 | 58 | 66 | 68 | 68 | 77 | 77 | 58 | 66 | 66 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)










