Surf Forecasts:
How big are the waves at Mahai'ula Bay today (01 Oct):
- Morning surf: Morning surf (01 Oct, local time) - 1.5ft (0.5m), 9s period with W swell.
- Afternoon surf: Afternoon surf (01 Oct, local time) - 2ft (0.6m), 8s period with W swell.
- Evening surf: Evening surf (01 Oct, local time) - 2ft (0.6m), 9s period with W swell.
The current surf forecast for Mahai'ula Bay at 1AM is: 0.8m 10s primary swell from a West-northwest direction (forecast issued at 07:00pm September 30). An open ocean swell of 0.5m 5s is not directed at the surf break, a second open ocean swell of 0.7m 4s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 Oct) | 1.5ft (0.5m) | 9s |
| Afternoon (01 Oct) | 2ft (0.6m) | 8s |
| Evening (01 Oct) | 2ft (0.6m) | 9s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Thu night. Warm (max 27°C on Wed night, min 25°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Wed 30 | Thursday 1 | Friday 2 | |||||||||||||||||
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) | W 10 | WNW 11 | WNW 10 | WNW 10 | W 9 | W 9 | W 8 | W 8 | W 9 | W 9 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | W 8 | W 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 125 | 198 | 177 | 100 | 59 | 39 | 35 | 35 | 55 | 56 | 51 | 47 | 45 | 28 | 27 | 27 | 27 | 32 | 33 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | glassy | cross | cross | on | on | on | on | cross-on | cross | cross-on | cross-on | cross-on | on | on | on | cross-on | glassy |
High Tide | 7:21AM0.75m | 6:23PM0.31m | 8:34AM0.73m | 7:59PM0.26m | |||||||||||||||
Low Tide | 11:38PM0.07m | 2:58PM0.26m | 00:21AM0.11m | 5:07PM0.24m | |||||||||||||||
 |  | |  | |  | | | | | | |  |  | | | | | | |
 | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:15 | — | — | — | — | — | — |
 | 6:13 | — | — | — | — | — | — | — | 6:12 | — | — | — | — | — | — | — | 6:10 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 | 1 | — | — |
Temp °C | 27 | 27 | 27 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 26 |
Feels °C | 29 | 29 | 31 | 29 | 29 | 29 | 30 | 30 | 30 | 29 | 29 | 29 | 28 | 30 | 29 | 28 | 29 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | W 10 | WNW 11 | WNW 10 | WNW 10 | W 9 | W 9 | W 8 | W 8 | W 9 | W 9 | W 8 | W 8 | S 14 | S 14 | S 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 |
| kJ | 125 | 198 | 177 | 100 | 59 | 39 | 35 | 35 | 55 | 56 | 51 | 47 | 146 | 142 | 126 | 176 | 162 | 157 | 157 |
Swell 2 Height (m) Direction Period (s) | S 5 | S 4 | S 4 | S 5 | S 5 | S 5 | S 4 | S 4 | S 4 | S 15 | S 14 | S 14 | W 8 | W 8 | W 7 | W 7 | W 7 | W 8 | W 8 |
| kJ | 10 | 10 | 10 | 11 | 11 | 11 | 9 | 9 | 9 | 109 | 107 | 107 | 45 | 28 | 27 | 27 | 27 | 32 | 33 |
Swell 3 Height (m) Direction Period (s) | SW 15 | SW 14 | SSW 14 | SW 14 | S 13 | S 13 | S 13 | SSW 13 | SSW 15 | S 4 | S 4 | SSW 12 | NE 4 | NE 4 | S 5 | S 5 | S 5 | S 5 | S 4 |
| kJ | 104 | 102 | 61 | 100 | 92 | 92 | 92 | 56 | 74 | 9 | 5 | 48 | 5 | 5 | 4 | 8 | 8 | 7 | 6 |
Wind waves Height (m) Direction Period (s) | — | SSE 4 | SSE 4 | — | — | SSE 4 | SSE 4 | SSE 4 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 15 | 21 | — | — | 15 | 15 | 15 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 19 | 19 | 0 | 4 | 14 | 14 | 101 | 100 | 101 | 34 | 34 | 100 | 18 | 100 | 101 | 101 | 100 | 26 | 26 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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