Surf Forecasts:
How big are the waves at Mahai'ula Bay today (25 Aug):
- Morning surf: Morning surf (25 Aug, local time) - 1.5ft (0.5m), 5s period with N swell.
- Evening surf: Evening surf (25 Aug, local time) - 1ft (0.3m), 9s period with WNW swell.
The current surf forecast for Mahai'ula Bay at 10AM is: 0.5m 5s primary swell from a North direction (forecast issued at 07:00am August 25). An open ocean swell of 0.8m 5s is not directed at the surf break, a second open ocean swell of 0.6m 12s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Aug) | 1.5ft (0.5m) | 5s |
| Afternoon (25 Aug) | - | - |
| Evening (25 Aug) | 1ft (0.3m) | 9s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Tue night. Warm (max 29°C on Tue morning, min 25°C on Wed night). Wind will be generally light. | |||||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||||||||
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) | N 5 | N 5 | SSW 16 | SSW 16 | SSW 16 | WNW 9 | SW 3 | WSW 3 | NW 9 | S 18 | WNW 9 | SSW 17 | W 9 | NW 9 | WNW 9 | S 18 | SSW 16 | S 18 | S 18 | NNE 5 | S 16 | SSW 15 | SSW 15 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 12 | 12 | 0 | 0 | 0 | 17 | 3 | 3 | 22 | 0 | 8 | 0 | 26 | 22 | 9 | 0 | 0 | 0 | 0 | 8 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-on | cross-on | glassy | cross-off | cross-off | glassy | glassy | glassy | glassy | glassy | cross-off | cross-off | cross-off | glassy | glassy | cross-on | cross | glassy | glassy |
High Tide | 2:16AM0.36m | 2:46PM0.78m | 2:51AM0.41m | 3:15PM0.79m | 3:25AM0.47m | 3:42PM0.78m | |||||||||||||||||
Low Tide | 7:39AM0.10m | 9:39PM0.14m | 8:20AM0.08m | 9:58PM0.11m | 9:00AM0.08m | 10:18PM0.10m | |||||||||||||||||
 |  | |  | |  |  |  | | | | | | | | | | | | |  | | | |
 | 6:05 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — |
 | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — | — | — | — | — | — | 6:43 | — | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — |
Temp °C | 26 | 27 | 29 | 28 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 26 | 27 | 26 | 26 | 26 | 26 |
Feels °C | 29 | 29 | 32 | 32 | 31 | 30 | 30 | 28 | 27 | 29 | 31 | 31 | 30 | 30 | 28 | 26 | 27 | 29 | 30 | 29 | 29 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | NE 5 | NNE 5 | NNE 5 | NNE 6 | NNE 6 | NNE 6 | NNE 5 | NNE 5 | NNE 5 | NE 5 | SSW 17 | NNE 5 | NNE 5 | S 19 | NNE 5 | SSW 16 | S 16 | S 18 | S 16 | S 16 | SSW 15 | SSW 15 |
| kJ | 119 | 29 | 37 | 46 | 49 | 49 | 34 | 31 | 22 | 20 | 25 | 381 | 33 | 37 | 573 | 30 | 421 | 516 | 395 | 422 | 254 | 355 | 355 |
Swell 2 Height (m) Direction Period (s) | NNE 6 | SSW 12 | SSW 12 | SSW 12 | SSW 16 | SSW 12 | S 18 | SSW 15 | SSW 13 | SSW 14 | S 18 | NNE 5 | SSW 17 | S 19 | NNE 5 | S 18 | NNE 5 | S 18 | SSW 16 | NNE 5 | NNE 5 | S 16 | S 16 |
| kJ | 27 | 117 | 117 | 113 | 188 | 81 | 163 | 167 | 92 | 163 | 230 | 34 | 300 | 480 | 36 | 304 | 31 | 498 | 263 | 26 | 26 | 326 | 326 |
Swell 3 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 12 | SSW 14 | SSW 12 | S 18 | S 18 | S 18 | SSW 14 | S 19 | S 20 | S 17 | SSW 13 | SSW 13 | S 18 | NNE 5 | NNE 5 | S 12 | S 15 | NNE 6 | NNE 6 |
| kJ | 146 | 201 | 146 | 198 | 111 | 120 | 81 | 165 | 163 | 162 | 160 | 179 | 276 | 270 | 135 | 131 | 307 | 23 | 24 | 72 | 157 | 29 | 30 |
Wind waves Height (m) Direction Period (s) | N 5 | N 5 | — | — | — | WNW 9 | SW 3 | WSW 3 | NW 9 | — | WNW 9 | — | W 9 | NW 9 | WNW 9 | — | — | — | — | NNE 5 | — | — | — |
| kJ | 12 | 12 | — | — | — | 17 | 3 | 3 | 22 | — | 8 | — | 26 | 22 | 9 | — | — | — | — | 8 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 19 | 19 | 11 | 100 | 100 | 100 | 100 | 11 | 11 | 11 | 100 | 100 | 100 | 18 | 11 | 11 | 11 | 24 | 100 | 100 | 100 | 11 | 19 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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