Surf Forecasts:
How big are the waves at Mahai'ula Bay today (22 Sep):
- Morning surf: Morning surf (22 Sep, local time) - 1ft (0.3m), 13s period with SW swell.
- Afternoon surf: Afternoon surf (22 Sep, local time) - 1ft (0.3m), 19s period with SW swell.
The current surf forecast for Mahai'ula Bay at 3PM is: 0.3m 19s primary swell from a Southwest direction (forecast issued at 07:00am September 22). An open ocean swell of 0.8m 6s is not directed at the surf break, a second open ocean swell of 0.7m 12s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Sep) | 1ft (0.3m) | 13s |
| Afternoon (22 Sep) | 1ft (0.3m) | 19s |
| Evening (22 Sep) | - | - |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 12mm), heaviest on Thu afternoon. Warm (max 28°C on Tue morning, min 25°C on Thu morning). Wind will be generally light. | |||||||||||||||||||||||
Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||||||||
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) | SW 14 | SW 13 | S 12 | SW 19 | SW 19 | S 12 | S 13 | S 13 | S 13 | S 13 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SW 15 | SW 15 | SW 15 | S 11 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 29 | 28 | 0 | 57 | 57 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 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 | glassy | glassy | cross-on | cross-on | cross-on | glassy | glassy | glassy | cross | cross | cross-on | cross-on | cross | glassy | cross | glassy | glassy | glassy | glassy | glassy | cross | glassy | glassy |
High Tide | 1:31PM0.70m | 1:59AM0.44m | 2:03PM0.71m | 2:31AM0.52m | 2:33PM0.71m | ||||||||||||||||||
Low Tide | 6:35AM0.18m | 8:24PM0.14m | 7:25AM0.15m | 8:41PM0.11m | 8:10AM0.14m | 9:00PM0.08m | |||||||||||||||||
 |  | |  | |  | | | | | |  | |  |  | | |  | | |  | | | |
 | 6:11 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — | — | 6:13 | — | — | — | — | — | — |
 | — | — | — | — | 6:20 | — | — | — | — | — | — | — | 6:19 | — | — | — | — | — | — | — | 6:17 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | — | — | — | 1 | 2 | 3 | 1 | — | 1 |
Temp °C | 26 | 27 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 28 | 27 | 27 | 26 | 26 | 27 | 26 | 26 | 25 | 25 | 26 | 26 | 26 |
Feels °C | 30 | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 31 | 30 | 32 | 31 | 31 | 31 | 30 | 32 | 30 | 31 | 30 | 30 | 29 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | S 12 | S 12 | NE 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 | 212 | 153 | 148 | 38 | 52 | 52 | 49 | 46 | 41 | 41 | 49 | 49 | 51 | 49 | 37 | 33 | 43 | 51 | 53 | 55 | 64 | 60 | 44 |
Swell 2 Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | S 12 | S 12 | S 12 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SW 15 | SW 15 | SW 15 | S 11 |
| kJ | 28 | 28 | 31 | 146 | 146 | 148 | 163 | 168 | 168 | 166 | 119 | 110 | 108 | 108 | 106 | 166 | 166 | 164 | 154 | 178 | 178 | 242 | 119 |
Swell 3 Height (m) Direction Period (s) | SW 14 | SW 13 | SSW 13 | SW 19 | SW 19 | SW 17 | SW 17 | SW 17 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | SW 14 |
| kJ | 29 | 28 | 17 | 57 | 57 | 75 | 75 | 77 | 77 | 76 | 143 | 133 | 124 | 122 | 122 | 106 | 72 | 102 | 69 | 69 | 44 | 42 | 92 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 5 | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 11 | 18 | 100 | 103 | 103 | 100 | 11 | 11 | 11 | 11 | 100 | 26 | 1 | 1 | 1 | 11 | 4 | 11 | 11 | 1 | 19 | 11 | 1 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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