Surf Forecasts:
How big are the waves at Grandma's today (17 Jul):
- Morning surf: Morning surf (17 Jul, local time) - 1.5ft (0.5m), 14s period with W swell.
- Afternoon surf: Afternoon surf (17 Jul, local time) - 1.5ft (0.4m), 16s period with SSW swell.
- Evening surf: Evening surf (17 Jul, local time) - 2ft (0.6m), 15s period with SSW swell.
The current surf forecast for Grandma's at 3AM is: 0.5m 17s primary swell from a South-southwest direction and 0.5m 14s secondary swell from a West direction (forecast issued at 07:00pm July 16). An open ocean swell of 1.4m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Jul) | 1.5ft (0.5m) | 14s |
| Afternoon (17 Jul) | 1.5ft (0.4m) | 16s |
| Evening (17 Jul) | 2ft (0.6m) | 15s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 29°C on Sat afternoon, min 24°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | |||||||||||||||||
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) | SSW 17 | W 14 | SSW 17 | SSW 17 | W 14 | W 14 | W 14 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 14 | SSW 14 | SSW 14 | SSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 197 | 106 | 264 | 170 | 109 | 104 | 103 | 82 | 142 | 191 | 176 | 169 | 158 | 111 | 111 | 93 | 158 | 113 | 113 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | cross-off | cross-off | cross-off | cross-off | glassy | glassy | off | off | cross-off | glassy | cross-off | off | off | cross-off | off | off | off |
High Tide | 5:56PM0.78m | 6:35AM0.37m | 6:35PM0.70m | 7:33AM0.41m | 7:13PM0.61m | ||||||||||||||
Low Tide | 00:44AM0.03m | 11:35AM0.08m | 1:17AM0.03m | 12:32PM0.15m | |||||||||||||||
 |  | | | | | |  | | | | |  | | | | | | | |
 | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — |
 | 7:09 | — | — | — | — | — | — | — | 7:08 | — | — | — | — | — | — | — | 7:08 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 27 | 25 | 25 | 25 | 26 | 28 | 28 | 28 | 27 | 26 | 25 | 25 | 26 | 28 | 29 | 27 | 25 | 25 |
Feels °C | 31 | 31 | 28 | 28 | 28 | 29 | 31 | 31 | 30 | 29 | 29 | 28 | 27 | 27 | 30 | 31 | 28 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | W 14 | SSW 17 | SSW 17 | W 14 | W 14 | W 14 | WNW 14 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 14 | SSW 14 | SSW 14 | SSW 14 |
| kJ | 197 | 106 | 264 | 170 | 106 | 104 | 103 | 66 | 142 | 191 | 176 | 169 | 158 | 111 | 111 | 93 | 158 | 113 | 113 |
Swell 2 Height (m) Direction Period (s) | W 14 | SW 13 | W 14 | W 14 | SSW 17 | SSW 12 | SW 12 | SSW 16 | WNW 14 | WNW 14 | WNW 14 | WNW 14 | WNW 13 | WNW 13 | SE 6 | SE 6 | NNE 7 | W 13 | SE 6 |
| kJ | 106 | 82 | 106 | 106 | 109 | 54 | 35 | 82 | 66 | 65 | 63 | 61 | 59 | 58 | 9 | 9 | 9 | 30 | 9 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SSW 17 | N 7 | SW 12 | SW 11 | SSW 16 | SW 16 | SSW 12 | SSW 12 | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | W 13 | W 13 | W 13 | N 7 | W 13 |
| kJ | 65 | 99 | 9 | 25 | 33 | 90 | 65 | 54 | 55 | 10 | 10 | 10 | 6 | 9 | 30 | 30 | 30 | 8 | 30 |
Wind waves Height (m) Direction Period (s) | SSW 7 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 5 | NNE 7 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 8 | E 6 | E 6 |
| kJ | 10 | 89 | 101 | 121 | 75 | 78 | 92 | 93 | 9 | 167 | 196 | 170 | 124 | 130 | 214 | 104 | 304 | 230 | 162 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 4 | 4 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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