Surf Forecasts:
How big are the waves at Mahai'ula Bay today (02 Sep):
The current surf forecast for Mahai'ula Bay at 5PM is: 0.2m 7s primary swell from a West-southwest direction (forecast issued at 01:00pm September 02). An open ocean swell of 1.0m 7s is not directed at the surf break, a second open ocean swell of 0.9m 15s is not directed at the surf break. The wind direction is predicted to be onshore.
Short Range ForecastMostly dry. Warm (max 29°C on Thu afternoon, min 25°C on Fri night). Wind will be generally light. | |||||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | |||||||||||||||||||
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) | W 7 | S 16 | WSW 7 | S 15 | S 15 | S 15 | S 15 | SSE 14 | SSE 13 | W 9 | W 9 | W 9 | W 9 | S 13 | SW 18 | SW 18 | SW 18 | N 6 | W 10 | S 12 | S 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 6 | 2 | 2 | 0 | 12 | 12 | 12 | 24 | 2 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | on | cross | cross-off | cross-off | cross-off | glassy | cross-on | cross-on | glassy | glassy | cross-off | cross-off | glassy | cross-off | cross-on | cross-on | cross-on | glassy | glassy |
High Tide | 6:27PM0.39m | 8:58AM0.68m | 6:59PM0.32m | 10:26AM0.70m | 9:25PM0.26m | ||||||||||||||||
Low Tide | 2:28PM0.32m | 00:59AM0.09m | 5:04PM0.31m | 1:54AM0.12m | 7:14PM0.25m | ||||||||||||||||
 | | |  |  | | | | |  | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — |
 | — | — | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:36 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 29 | 28 | 27 | 27 | 26 | 26 | 27 | 28 | 27 | 27 | 26 | 26 |
Feels °C | 32 | 32 | 31 | 30 | 29 | 29 | 28 | 30 | 30 | 30 | 31 | 30 | 29 | 27 | 28 | 29 | 30 | 29 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 16 | NE 8 | NNE 7 | S 15 | NNE 7 | NNE 6 | NNE 6 | NNE 7 | SSE 13 | S 13 | S 12 | S 12 | S 12 | S 13 | S 12 | S 11 | S 11 | S 12 | S 11 | S 12 | S 12 |
| kJ | 507 | 129 | 114 | 357 | 93 | 66 | 51 | 68 | 515 | 643 | 603 | 604 | 556 | 398 | 735 | 563 | 546 | 586 | 566 | 657 | 723 |
Swell 2 Height (m) Direction Period (s) | NE 8 | S 16 | S 15 | NNE 7 | S 15 | S 15 | S 15 | SSE 14 | NNE 7 | NNE 7 | NNE 7 | NNE 6 | NNE 6 | S 11 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | SSW 20 | NNE 6 | NNE 6 |
| kJ | 84 | 494 | 371 | 84 | 347 | 272 | 347 | 346 | 73 | 73 | 93 | 82 | 72 | 231 | 44 | 65 | 58 | 53 | 38 | 91 | 56 |
Swell 3 Height (m) Direction Period (s) | S 11 | SSE 11 | S 11 | S 11 | S 11 | SSE 13 | SSE 12 | SSW 14 | S 14 | W 9 | W 9 | W 9 | W 9 | NNE 6 | SW 18 | SW 18 | SW 18 | S 21 | W 10 | SSW 20 | SSW 20 |
| kJ | 39 | 23 | 36 | 36 | 36 | 116 | 98 | 218 | 203 | 7 | 6 | 2 | 2 | 51 | 12 | 12 | 12 | 9 | 2 | 38 | 38 |
Wind waves Height (m) Direction Period (s) | W 7 | — | WSW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 6 | NNE 6 | — | — |
| kJ | 4 | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 24 | 75 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 103 | 1 | 105 | 11 | 1 | 18 | 18 | 1 | 103 | 103 | 1 | 1 | 1 | 18 | 18 | 1 | 103 | 103 | 113 | 1 | 11 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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