Surf Forecasts:
How big are the waves at Mahai'ula Bay today (14 Aug):
- Morning surf: Morning surf (14 Aug, local time) - 1ft (0.3m), 11s period with WNW swell.
- Afternoon surf: Afternoon surf (14 Aug, local time) - 1ft (0.3m), 12s period with WNW swell.
- Evening surf: Evening surf (14 Aug, local time) - 1ft (0.3m), 12s period with WNW swell.
The current surf forecast for Mahai'ula Bay at 3PM is: 0.3m 12s primary swell from a West-northwest direction (forecast issued at 07:00am August 14). An open ocean swell of 1.1m 14s is not directed at the surf break, a second open ocean swell of 1.7m 6s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Aug) | 1ft (0.3m) | 11s |
| Afternoon (14 Aug) | 1ft (0.3m) | 12s |
| Evening (14 Aug) | 1ft (0.3m) | 12s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 33mm), heaviest during Sat night. Warm (max 29°C on Fri morning, min 24°C on Sat night). Winds increasing (calm on Fri afternoon, strong winds from the SSE by Sat night). | |||||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||||||||
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 12 | WNW 11 | WNW 11 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | W 12 | WNW 11 | WNW 11 | WNW 11 | WNW 11 | NNE 8 | WNW 13 | WNW 13 | WNW 13 | SSE 6 | WNW 13 | WNW 12 | S 13 | S 13 | S 13 | S 15 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 26 | 25 | 25 | 26 | 27 | 27 | 27 | 24 | 25 | 24 | 24 | 24 | 0 | 34 | 34 | 58 | 0 | 57 | 52 | 0 | 0 | 0 | 0 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | glassy | glassy | cross | glassy | cross | cross-off | cross | glassy | cross-off | cross | off | cross-off | cross-off | cross-off | cross-off | cross-on | on | on | on | on |
High Tide | 5:00AM0.54m | 5:06PM0.76m | 5:44AM0.58m | 5:36PM0.67m | 6:30AM0.60m | 6:02PM0.58m | |||||||||||||||||
Low Tide | 10:38AM0.10m | 11:41PM0.07m | 11:27AM0.17m | 00:06AM0.08m | 12:18PM0.24m | ||||||||||||||||||
 |  | | |  |  | | |  |  | | |  |  |  | | |  | | | | | | |
 | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — | — | 6:03 | — | — | — | — | — | — |
 | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — |
mm | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — | 1 | 1 | 9 | 13 | — | 1 | — | 1 | 1 | 2 | 1 |
Temp °C | 26 | 27 | 29 | 29 | 28 | 27 | 27 | 27 | 27 | 26 | 29 | 29 | 27 | 25 | 24 | 29 | 28 | 28 | 28 | 29 | 28 | 27 | 27 |
Feels °C | 27 | 27 | 30 | 33 | 32 | 31 | 31 | 29 | 31 | 29 | 33 | 31 | 30 | 28 | 26 | 24 | 29 | 32 | 29 | 32 | 31 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 14 | S 14 | NNE 7 | NNE 7 | NNE 6 | S 13 | S 13 | S 13 | S 13 | NNE 7 | NNE 8 | S 13 | NNE 8 | NE 8 | SSE 7 | NE 8 | NE 8 | S 13 | S 6 | S 6 | S 15 |
| kJ | 610 | 508 | 508 | 508 | 216 | 186 | 149 | 356 | 289 | 284 | 284 | 310 | 372 | 289 | 466 | 154 | 277 | 95 | 65 | 219 | 139 | 60 | 440 |
Swell 2 Height (m) Direction Period (s) | WNW 12 | WNW 11 | WNW 11 | WNW 12 | S 14 | S 14 | S 14 | W 12 | WNW 11 | WNW 11 | WNW 11 | S 13 | S 13 | S 18 | S 18 | S 18 | NNE 8 | WNW 13 | S 16 | NE 8 | S 13 | S 13 | S 5 |
| kJ | 26 | 25 | 25 | 26 | 405 | 394 | 366 | 24 | 25 | 24 | 24 | 280 | 284 | 99 | 99 | 98 | 136 | 57 | 185 | 50 | 222 | 222 | 33 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 18 | SSW 18 | WNW 12 | WNW 12 | WNW 12 | SW 17 | SW 17 | S 20 | W 15 | WNW 11 | S 18 | WNW 13 | WNW 13 | WNW 13 | S 14 | SW 19 | WNW 12 | S 16 | NE 8 | NE 8 | NNE 8 |
| kJ | 13 | 13 | 12 | 30 | 27 | 27 | 27 | 12 | 12 | 30 | 17 | 24 | 57 | 34 | 34 | 58 | 236 | 15 | 52 | 183 | 49 | 48 | 39 |
Wind waves Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | NNE 6 | — | — | — | NNE 7 | NNE 7 | NNE 7 | NNE 7 | — | SE 2 | NE 8 | SSE 14 | S 7 | SSE 6 | S 6 | S 6 | S 6 | S 6 | — | — |
| kJ | 49 | 63 | 123 | 230 | — | — | — | 186 | 306 | 343 | 352 | — | 2 | 1473 | 1156 | 572 | 399 | 335 | 301 | 219 | 141 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 18 | 18 | 18 | 1 | 1 | 11 | 1 | 11 | 1 | 11 | 1 | 1 | 23 | 38 | 444 | 444 | 99 | 0 | 100 | 36 | 19 | 19 | 100 |
Best forecast wave conditions in Big Island | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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