Surf Forecasts:
How big are the waves at Mahai'ula Bay today (31 Jul):
- Afternoon surf: Afternoon surf (31 Jul, local time) - 1ft (0.3m), 2s period with W swell.
The current surf forecast for Mahai'ula Bay at 6PM is: 0.4m 3s primary swell from a Southwest direction (forecast issued at 01:00pm July 31). An open ocean swell of 1.0m 6s is not directed at the surf break, a second open ocean swell of 0.6m 15s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 Jul) | - | - |
| Afternoon (31 Jul) | 1ft (0.3m) | 2s |
| Evening (31 Jul) | - | - |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Fri night). Wind will be generally light. | |||||||||||||||||||||
Fri 31 | Saturday 1 | Sunday 2 | |||||||||||||||||||
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 8 | W 2 | SW 3 | SW 15 | SW 3 | SSW 15 | SSW 15 | WSW 8 | W 2 | WNW 3 | W 3 | SSW 14 | SW 14 | NW 4 | SW 14 | NNE 7 | NNE 7 | NNE 8 | SW 13 | S 13 | W 2 |
Wave Graph  | |||||||||||||||||||||
 kJ | 12 | 1 | 3 | 0 | 2 | 0 | 0 | 6 | 1 | 2 | 1 | 0 | 0 | 1 | 69 | 0 | 0 | 0 | 26 | 0 | 1 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | glassy | cross | glassy | cross | glassy | cross-off | cross-off | glassy | glassy | cross | cross-off | cross-off | cross-off | glassy | glassy | on | cross-on | cross | glassy | cross-on |
High Tide | 5:12PM0.77m | 5:39AM0.48m | 5:39PM0.72m | 6:24AM0.51m | 6:05PM0.65m | ||||||||||||||||
Low Tide | 10:24AM0.11m | 11:59PM0.11m | 11:05AM0.16m | 00:23AM0.10m | 11:52AM0.22m | ||||||||||||||||
 | | |  |  | | | | |  | | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — |
 | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 28 | 26 | 26 | 25 | 26 | 26 | 28 | 27 | 28 | 27 | 26 | 26 | 25 | 26 | 27 | 27 | 27 | 26 | 26 |
Feels °C | 31 | 32 | 31 | 30 | 27 | 27 | 29 | 28 | 30 | 29 | 30 | 27 | 27 | 29 | 28 | 29 | 29 | 29 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | SSW 15 | SSW 15 | NNE 6 | NNE 6 | NNE 7 | NNE 6 | NNE 6 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 8 | NNE 7 | NNE 7 | NNE 7 |
| kJ | 32 | 49 | 71 | 68 | 68 | 144 | 142 | 72 | 53 | 70 | 70 | 85 | 51 | 61 | 68 | 70 | 70 | 72 | 68 | 77 | 81 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | SW 15 | SW 15 | SW 15 | S 12 | S 12 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 11 | SSW 13 | S 13 | S 13 |
| kJ | 112 | 106 | 183 | 178 | 176 | 69 | 68 | 133 | 123 | 123 | 91 | 127 | 91 | 89 | 69 | 51 | 41 | 24 | 59 | 89 | 89 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 16 | S 12 | S 12 | S 12 | SSE 5 | SSE 5 | S 12 | S 11 | S 11 | S 11 | S 11 | S 3 | S 4 | S 11 | S 11 | S 11 | SW 13 | SW 13 | SW 13 | SW 13 |
| kJ | 169 | 162 | 104 | 103 | 72 | 5 | 5 | 42 | 39 | 39 | 39 | 38 | 3 | 4 | 21 | 21 | 20 | 44 | 26 | 40 | 40 |
Wind waves Height (m) Direction Period (s) | W 8 | W 2 | SW 3 | SSE 11 | SW 3 | NNE 6 | NNE 6 | WSW 8 | W 2 | WNW 3 | W 3 | SSE 8 | S 3 | NW 4 | N 7 | — | — | — | — | — | W 2 |
| kJ | 12 | 1 | 3 | 45 | 2 | 68 | 99 | 6 | 1 | 2 | 1 | 22 | 7 | 1 | 33 | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 100 | 11 | 1 | 1 | 1 | 11 | 1 | 11 | 103 | 1 | 11 | 1 | 1 | 1 | 0 | 1 | 100 | 100 | 105 | 1 | 1 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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