Surf Forecasts:
How big are the waves at Mahai'ula Bay today (18 Jun):
- Morning surf: Morning surf (18 Jun, local time) - 1.5ft (0.4m), 10s period with NW swell.
- Afternoon surf: Afternoon surf (18 Jun, local time) - 1.5ft (0.4m), 10s period with NW swell.
- Evening surf: Evening surf (18 Jun, local time) - 1.5ft (0.4m), 10s period with NW swell.
The current surf forecast for Mahai'ula Bay at 2PM is: 0.4m 10s primary swell from a Northwest direction (forecast issued at 07:00am June 18). An open ocean swell of 1.2m 14s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Jun) | 1.5ft (0.4m) | 10s |
| Afternoon (18 Jun) | 1.5ft (0.4m) | 10s |
| Evening (18 Jun) | 1.5ft (0.4m) | 10s |
Table - waves today at Mahai'ula Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 28°C on Sat afternoon, min 25°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
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 | 2 AM | |
Swell Height Map |  |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | S 14 | S 14 | S 13 | S 13 | NW 9 | NW 9 | WNW 10 | S 13 | S 13 | S 16 | S 16 | S 12 | N 4 | WNW 10 | WNW 10 | S 15 | S 15 | S 14 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 27 | 27 | 28 | 28 | 27 | 26 | 0 | 0 | 0 | 0 | 23 | 23 | 10 | 0 | 0 | 0 | 0 | 0 | 3 | 9 | 9 | 0 | 0 | 0 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | glassy | cross-on | on | cross | cross | cross | glassy | on |
High Tide | 6:31AM0.34m | 6:54PM0.82m | 7:42AM0.37m | 7:36PM0.73m | 9:00AM0.42m | 8:18PM0.64m | ||||||||||||||||||
Low Tide | 11:37AM0.11m | 2:12AM0.11m | 12:35PM0.19m | 2:53AM0.11m | 1:46PM0.28m | |||||||||||||||||||
 |  | | |  | | | | | | | | | |  | | | | | | | | | | |
 | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | 5:46 |
 | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:05 | — | — | 7:05 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 27 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 26 | 26 | 25 | 25 | 26 | 27 | 27 | 28 | 26 | 25 | 25 |
Feels °C | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 29 | 29 | 29 | 30 | 31 | 28 | 29 | 29 | 29 | 30 | 30 | 29 | 29 | 29 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | S 16 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 15 | NNE 5 | NNE 5 | S 14 |
| kJ | 706 | 619 | 602 | 602 | 508 | 501 | 487 | 366 | 345 | 276 | 276 | 276 | 219 | 215 | 212 | 161 | 144 | 137 | 98 | 99 | 159 | 25 | 19 | 264 |
Swell 2 Height (m) Direction Period (s) | NW 10 | NW 10 | NW 10 | NW 10 | NW 10 | NE 9 | NE 6 | S 19 | S 19 | S 18 | S 18 | S 18 | S 18 | NNE 4 | NNE 5 | NNE 5 | S 16 | S 16 | S 16 | S 15 | S 12 | S 15 | S 15 | NNE 5 |
| kJ | 27 | 27 | 28 | 28 | 27 | 28 | 14 | 190 | 186 | 174 | 163 | 162 | 160 | 12 | 20 | 17 | 188 | 132 | 183 | 163 | 99 | 157 | 155 | 13 |
Swell 3 Height (m) Direction Period (s) | NE 10 | NE 10 | NE 10 | NE 9 | NE 9 | NW 10 | SSW 19 | NNE 5 | NNE 4 | NNE 8 | NW 9 | NW 9 | WNW 10 | S 18 | S 17 | S 16 | NNE 5 | NNE 4 | NE 4 | WNW 10 | WNW 10 | S 12 | S 12 | SW 18 |
| kJ | 23 | 23 | 23 | 22 | 21 | 26 | 125 | 8 | 8 | 28 | 23 | 23 | 10 | 156 | 140 | 190 | 8 | 3 | 4 | 9 | 9 | 98 | 97 | 79 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | S 5 | — | — | — | NNE 8 | — | — | SSE 11 | — | — | N 4 | NNE 4 | NNE 4 | — | SSE 10 | S 3 |
| kJ | — | — | — | — | — | — | — | — | 5 | — | — | — | 26 | — | — | 40 | — | — | 3 | 7 | 13 | — | 20 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 18 | 19 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 38 | 24 | 100 | 19 | 100 | 99 | 103 | 100 | 100 | 100 | 99 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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