Surf Forecasts:
How big are the waves at Mahai'ula Bay today (12 Oct):
- Morning surf: Morning surf (12 Oct, local time) - 1.5ft (0.4m), 13s period with WNW swell.
- Afternoon surf: Afternoon surf (12 Oct, local time) - 1.5ft (0.4m), 13s period with WNW swell.
- Evening surf: Evening surf (12 Oct, local time) - 1.5ft (0.4m), 16s period with SW swell.
The current surf forecast for Mahai'ula Bay at 1AM is: 0.4m 12s primary swell from a West-northwest direction (forecast issued at 07:00pm October 11). An open ocean swell of 0.9m 16s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Oct) | 1.5ft (0.4m) | 13s |
| Afternoon (12 Oct) | 1.5ft (0.4m) | 13s |
| Evening (12 Oct) | 1.5ft (0.4m) | 16s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Tue morning, min 25°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Sun 11 | Monday 12 | Tuesday 13 | |||||||||||||||||
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) | NW 12 | S 16 | WNW 12 | WNW 12 | WNW 11 | WNW 13 | S 15 | WNW 13 | S 15 | SW 16 | WNW 13 | NW 16 | NW 16 | NW 16 | NW 15 | NW 15 | NW 15 | NW 14 | NW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 114 | 0 | 46 | 46 | 43 | 57 | 0 | 54 | 0 | 95 | 54 | 91 | 125 | 121 | 110 | 107 | 104 | 103 | 100 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | glassy | glassy | on | cross-on | cross | cross | glassy | glassy | glassy | glassy | cross-on | on | on | glassy | cross |
High Tide | 4:42AM0.79m | 4:24PM0.43m | 5:17AM0.77m | 4:52PM0.38m | |||||||||||||||
Low Tide | 9:47PM0.05m | 11:23AM0.18m | 10:10PM0.07m | 12:10PM0.21m | 10:34PM0.09m | ||||||||||||||
 |  | | |  |  | | | | | | | | | | | | | | |
 | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — |
 | 6:04 | — | — | — | — | — | — | — | 6:02 | — | — | — | — | — | — | — | 6:01 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 27 | 29 | 28 | 29 | 28 | 30 | 29 | 29 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 |
| kJ | 417 | 326 | 522 | 401 | 215 | 209 | 209 | 272 | 272 | 268 | 250 | 173 | 125 | 171 | 167 | 167 | 219 | 215 | 163 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | NNE 5 | WNW 12 | SSW 12 | SSW 12 | SSW 9 | SW 17 | SW 16 | NE 7 | NE 7 | NE 7 | NW 16 | NW 16 | NW 15 | NE 6 | NNE 6 | NNE 6 | NNE 5 |
| kJ | 166 | 119 | 9 | 46 | 48 | 47 | 27 | 137 | 133 | 27 | 26 | 25 | 125 | 121 | 110 | 16 | 23 | 20 | 14 |
Swell 3 Height (m) Direction Period (s) | NW 12 | NNE 5 | WNW 12 | NNE 4 | WNW 11 | WNW 13 | NE 8 | WNW 13 | NE 8 | SW 16 | WNW 13 | NW 16 | NNE 7 | NNE 7 | NE 6 | NW 15 | NW 15 | NW 14 | NW 14 |
| kJ | 114 | 9 | 46 | 8 | 43 | 57 | 15 | 54 | 28 | 95 | 54 | 91 | 18 | 17 | 15 | 107 | 104 | 103 | 100 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 7 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 100 | 100 | 23 | 97 | 19 | 97 | 99 | 101 | 100 | 14 | 1 | 0 | 0 | 0 | 100 | 100 | 100 | 0 | 18 |
Best forecast wave conditions in Big Island | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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