Surf Forecasts:
How big are the waves at Mahai'ula Bay today (12 Jul):
- Morning surf: Morning surf (12 Jul, local time) - 1.5ft (0.4m), 13s period with W swell.
- Afternoon surf: Afternoon surf (12 Jul, local time) - 1.5ft (0.4m), 3s period with W swell.
- Evening surf: Evening surf (12 Jul, local time) - 1.5ft (0.4m), 12s period with W swell.
The current surf forecast for Mahai'ula Bay at 12AM is: 0.4m 13s primary swell from a West direction (forecast issued at 07:00pm July 11). An open ocean swell of 0.9m 7s is not directed at the surf break, a second open ocean swell of 0.6m 17s is not directed at the surf break, a second open ocean swell of 0.3m 11s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Jul) | 1.5ft (0.4m) | 13s |
| Afternoon (12 Jul) | 1.5ft (0.4m) | 3s |
| Evening (12 Jul) | 1.5ft (0.4m) | 12s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Sat night. Warm (max 27°C on Sat night, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 11 | Sunday 12 | Monday 13 | Tue 14 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | |
Swell Height Map |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | W 14 | W 14 | W 13 | WSW 3 | W 13 | W 13 | SW 16 | W 3 | SW 16 | W 12 | SW 16 | SW 16 | WSW 9 | W 12 | W 12 | W 12 | WNW 19 | W 19 | W 18 | W 18 | W 18 | W 18 | W 16 | W 17 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 63 | 60 | 55 | 3 | 55 | 54 | 0 | 2 | 0 | 48 | 0 | 0 | 8 | 47 | 26 | 26 | 72 | 178 | 162 | 230 | 232 | 240 | 131 | 273 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | cross-on | glassy | glassy | cross | glassy | cross | cross | glassy | cross-on | cross | cross-off | glassy | cross | cross-off | cross-off | glassy | glassy | glassy | glassy | cross | cross |
High Tide | 1:44AM0.30m | 2:56PM0.93m | 2:43AM0.32m | 3:41PM0.96m | 3:37AM0.34m | |||||||||||||||||||
Low Tide | 9:33PM0.17m | 7:18AM-0.00m | 10:14PM0.13m | 8:12AM-0.02m | 10:53PM0.10m | 9:03AM-0.02m | ||||||||||||||||||
 |  |  | | | | | | | | |  | | | | | | | | |  |  | | | |
 | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — |
 | 7:07 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | 7:06 |
mm | — | — | 1 | 1 | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 1 | 1 | 1 | — | — | — | — |
Temp °C | 27 | 27 | 27 | 26 | 25 | 26 | 27 | 26 | 27 | 26 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 25 | 26 | 26 |
Feels °C | 31 | 30 | 29 | 29 | 29 | 29 | 30 | 29 | 30 | 28 | 29 | 28 | 26 | 26 | 29 | 29 | 27 | 27 | 28 | 27 | 26 | 28 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | SW 16 | NNE 6 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | NNE 7 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 |
| kJ | 93 | 85 | 85 | 51 | 51 | 70 | 75 | 93 | 99 | 255 | 117 | 99 | 78 | 84 | 96 | 91 | 53 | 53 | 41 | 206 | 200 | 197 | 194 | 191 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SSE 12 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | NNE 7 | NNE 7 | W 18 | NNE 7 | W 17 |
| kJ | 249 | 246 | 246 | 309 | 302 | 281 | 264 | 258 | 258 | 46 | 251 | 248 | 245 | 242 | 229 | 220 | 217 | 211 | 208 | 41 | 26 | 240 | 43 | 273 |
Swell 3 Height (m) Direction Period (s) | W 14 | W 14 | W 13 | S 11 | W 13 | W 13 | S 12 | S 12 | S 12 | W 12 | SSE 12 | S 4 | SSE 4 | W 12 | W 12 | W 12 | WNW 19 | W 19 | W 18 | W 18 | W 18 | NNE 7 | W 16 | NNE 7 |
| kJ | 63 | 60 | 55 | 37 | 55 | 54 | 41 | 43 | 44 | 48 | 46 | 4 | 5 | 47 | 26 | 26 | 72 | 178 | 162 | 230 | 232 | 31 | 131 | 48 |
Wind waves Height (m) Direction Period (s) | — | — | S 11 | WSW 3 | WSW 3 | WSW 3 | S 3 | W 3 | — | NNE 7 | S 3 | SSW 3 | WSW 9 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 21 | 3 | 3 | 2 | 4 | 2 | — | 117 | 5 | 4 | 8 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 1 | 1 | 34 | 1 | 1 | 34 | 1 | 11 | 11 | 1 | 19 | 14 | 1 | 1 | 24 | 0 | 0 | 0 | 0 | 0 | 0 | 34 | 36 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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