Surf Forecasts:
How big are the waves at Mahai'ula Bay today (23 Aug):
- Morning surf: Morning surf (23 Aug, local time) - 2.5ft (0.8m), 12s period with WNW swell.
- Afternoon surf: Afternoon surf (23 Aug, local time) - 2.5ft (0.7m), 11s period with WNW swell.
- Evening surf: Evening surf (23 Aug, local time) - 1.5ft (0.5m), 10s period with WNW swell.
The current surf forecast for Mahai'ula Bay at 9AM is: 0.8m 12s primary swell from a West-northwest direction (forecast issued at 01:00am August 23). An open ocean swell of 1.0m 6s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Aug) | 2.5ft (0.8m) | 12s |
| Afternoon (23 Aug) | 2.5ft (0.7m) | 11s |
| Evening (23 Aug) | 1.5ft (0.5m) | 10s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Sun afternoon. Warm (max 29°C on Sun afternoon, min 26°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||||||||||
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 | 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) | WNW 10 | WNW 10 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | S 15 | N 6 | SSW 14 | SSW 14 | SSW 13 | N 6 | SSW 13 | SSW 13 | SSW 13 | N 5 | N 5 | SSW 16 | SSW 16 | WNW 9 | W 3 | WNW 9 | NW 9 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 82 | 121 | 158 | 119 | 107 | 76 | 63 | 0 | 24 | 0 | 0 | 0 | 21 | 0 | 0 | 0 | 15 | 13 | 0 | 0 | 8 | 1 | 17 | 14 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | cross-on | glassy | cross-off | glassy | glassy | glassy | cross-on | glassy | glassy | glassy | cross-off |
High Tide | 00:53AM0.29m | 1:40PM0.72m | 1:39AM0.32m | 2:15PM0.76m | 2:16AM0.36m | 2:46PM0.78m | ||||||||||||||||||
Low Tide | 5:58AM0.15m | 9:01PM0.18m | 6:54AM0.12m | 9:20PM0.16m | 7:39AM0.10m | 9:39PM0.14m | ||||||||||||||||||
 | |  |  | |  |  |  | | | | | |  | | | | | | | | | | | |
 | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:45 | — | — |
mm | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | 1 | — | — | — | 1 | — | — | — | 1 | — | — |
Temp °C | 27 | 26 | 27 | 28 | 29 | 29 | 28 | 28 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 28 | 28 | 27 | 27 |
Feels °C | 32 | 31 | 31 | 31 | 33 | 34 | 32 | 33 | 31 | 32 | 31 | 31 | 31 | 32 | 32 | 31 | 32 | 31 | 31 | 31 | 32 | 33 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 6 |
| kJ | 75 | 53 | 77 | 71 | 71 | 55 | 73 | 53 | 41 | 41 | 42 | 41 | 32 | 47 | 47 | 38 | 28 | 28 | 37 | 37 | 40 | 55 | 53 | 49 |
Swell 2 Height (m) Direction Period (s) | WNW 10 | WNW 10 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | WNW 10 | S 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 16 | SSW 12 | S 18 |
| kJ | 82 | 121 | 158 | 119 | 107 | 76 | 63 | 109 | 186 | 160 | 170 | 204 | 204 | 201 | 195 | 170 | 121 | 119 | 117 | 117 | 113 | 188 | 81 | 232 |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | S 15 | S 13 | SSE 13 | SSE 12 | S 12 | S 7 | S 12 | S 6 | SSW 18 | S 12 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 12 | SSW 14 | SSW 12 |
| kJ | 150 | 148 | 146 | 144 | 142 | 126 | 110 | 86 | 95 | 119 | 106 | 23 | 103 | 15 | 103 | 99 | 149 | 146 | 201 | 146 | 198 | 111 | 120 | 81 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | N 6 | — | — | — | N 6 | — | S 12 | — | N 5 | N 5 | — | — | WNW 9 | W 3 | WNW 9 | NW 9 |
| kJ | — | — | — | — | — | — | — | — | 24 | — | — | — | 21 | — | 101 | — | 15 | 13 | — | — | 8 | 1 | 17 | 14 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 18 | 15 | 11 | 23 | 100 | 136 | 100 | 15 | 19 | 11 | 11 | 11 | 100 | 100 | 38 | 1 | 11 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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