Surf Forecasts:
How big are the waves at Mahai'ula Bay today (08 Sep):
- Morning surf: Morning surf (08 Sep, local time) - 10ft (3.0m), 11s period with WSW swell.
- Afternoon surf: Afternoon surf (08 Sep, local time) - 5.5ft (1.7m), 10s period with W swell.
- Evening surf: Evening surf (08 Sep, local time) - 3.5ft (1.1m), 9s period with W swell.
The current surf forecast for Mahai'ula Bay at 9PM is: 1.1m 9s primary swell from a West direction (forecast issued at 01:00pm September 08). An open ocean swell of 1.5m 8s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Sep) | 10ft (3.0m) | 11s |
| Afternoon (08 Sep) | 5.5ft (1.7m) | 10s |
| Evening (08 Sep) | 3.5ft (1.1m) | 9s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 26mm), heaviest during Wed night. Warm (max 29°C on Tue afternoon, min 26°C on Wed night). Wind will be generally light. | |||||||||||||||||||||
Tue 8 | Wednesday 9 | Thursday 10 | |||||||||||||||||||
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 | 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) | WSW 11 | W 10 | W 10 | W 9 | W 8 | WNW 8 | WNW 7 | WNW 8 | WNW 7 | WNW 7 | WNW 6 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 18 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1672 | 650 | 455 | 199 | 140 | 94 | 91 | 51 | 37 | 28 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | glassy | glassy | cross-off | cross-off | cross-off | cross-off | cross |
High Tide | 2:18PM0.82m | 2:40AM0.48m | 2:55PM0.80m | 3:19AM0.56m | 3:28PM0.76m | ||||||||||||||||
Low Tide | 9:06PM0.09m | 8:14AM0.08m | 9:31PM0.07m | 9:04AM0.09m | 9:55PM0.06m | ||||||||||||||||
 | |  |  |  | |  | | |  | |  | | | | | |  | | | | |
 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | 6:32 | — | — | — | — | — | — | — | 6:31 | — | — | — | — | — | — | — | 6:30 | — | — |
mm | — | — | — | — | 1 | 1 | — | — | — | 1 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
Temp °C | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 27 | 26 | 27 | 28 | 28 | 28 | 28 | 26 | 26 |
Feels °C | 29 | 30 | 31 | 32 | 32 | 33 | 32 | 32 | 32 | 32 | 32 | 31 | 30 | 29 | 32 | 32 | 30 | 29 | 30 | 29 | 30 |
Swell 1 Height (m) Direction Period (s) | WSW 11 | W 10 | W 10 | SW 8 | SSW 8 | SW 8 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | NNE 7 | SSW 12 | NNE 5 |
| kJ | 1672 | 650 | 455 | 297 | 161 | 186 | 419 | 336 | 326 | 257 | 253 | 232 | 229 | 176 | 176 | 173 | 170 | 129 | 38 | 115 | 28 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 9 | SSW 8 | W 9 | W 8 | SSW 14 | SSW 8 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | NNE 7 | NNE 7 | NE 7 | NNE 7 | NNE 7 | SSW 12 | SW 17 | SSW 12 |
| kJ | 543 | 404 | 302 | 199 | 140 | 431 | 88 | 86 | 68 | 47 | 44 | 32 | 27 | 35 | 35 | 42 | 32 | 31 | 121 | 148 | 83 |
Swell 3 Height (m) Direction Period (s) | NE 11 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | WNW 8 | WNW 7 | WNW 8 | WNW 7 | WNW 7 | WNW 6 | NE 7 | NE 7 | SSW 7 | SSW 7 | SW 16 | SW 17 | SW 18 | SW 18 | SSW 7 | SW 16 |
| kJ | 79 | 449 | 449 | 443 | 437 | 94 | 91 | 51 | 37 | 28 | 22 | 26 | 26 | 26 | 18 | 130 | 137 | 154 | 154 | 15 | 133 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 5 | S 4 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 33 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 57 | 57 | 36 | 0 | 0 | 0 | 0 | 11 | 100 | 101 | 101 | 19 | 100 | 100 | 19 | 1 | 1 | 100 | 1 | 1 | 18 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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