Surf Forecasts:
How big are the waves at Grandma's today (19 Jul):
- Morning surf: Morning surf (19 Jul, local time) - 1.5ft (0.5m), 12s period with S swell.
- Afternoon surf: Afternoon surf (19 Jul, local time) - 1.5ft (0.4m), 18s period with S swell.
- Evening surf: Evening surf (19 Jul, local time) - 1.5ft (0.4m), 18s period with S swell.
The current surf forecast for Grandma's at 12AM is: 0.5m 14s primary swell from a South direction and 0.3m 6s secondary swell from a Southeast direction (forecast issued at 07:00pm July 18). An open ocean swell of 1.0m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Jul) | 1.5ft (0.5m) | 12s |
| Afternoon (19 Jul) | 1.5ft (0.4m) | 18s |
| Evening (19 Jul) | 1.5ft (0.4m) | 18s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 2mm), mostly falling on Tue afternoon. Warm (max 28°C on Sun afternoon, min 24°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Sat 18 | Sunday 19 | Monday 20 | |||||||||||||||||
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 14 | SSW 14 | SSW 14 | S 12 | S 12 | S 12 | S 12 | S 13 | S 18 | S 18 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 |
Wave Graph  | |||||||||||||||||||
 kJ | 158 | 113 | 113 | 77 | 75 | 76 | 78 | 85 | 101 | 99 | 97 | 147 | 132 | 185 | 325 | 321 | 309 | 279 | 271 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | off | off | cross-off | off | off | cross-off | off | cross-off | off | cross-off | glassy | off | off | off | off |
High Tide | 7:13PM0.61m | 8:36AM0.46m | 7:52PM0.51m | 9:40AM0.52m | 8:35PM0.43m | ||||||||||||||
Low Tide | 1:49AM0.03m | 1:38PM0.22m | 2:23AM0.03m | 3:01PM0.27m | |||||||||||||||
 |  |  | | | | | | | | | | | |  | | | | | |
 | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — |
 | 7:08 | — | — | — | — | — | — | — | 7:08 | — | — | — | — | — | — | — | 7:08 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 26 | 25 | 24 | 24 | 25 | 27 | 28 | 27 | 25 | 25 | 24 | 24 | 25 | 27 | 27 | 27 | 26 | 25 |
Feels °C | 29 | 27 | 26 | 24 | 24 | 24 | 27 | 29 | 27 | 24 | 26 | 25 | 25 | 27 | 30 | 29 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | S 12 | S 12 | S 12 | S 12 | S 13 | SSW 12 | S 13 | S 18 | S 17 | S 16 | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 |
| kJ | 158 | 113 | 113 | 77 | 75 | 76 | 78 | 85 | 50 | 87 | 97 | 147 | 132 | 185 | 325 | 321 | 309 | 279 | 271 |
Swell 2 Height (m) Direction Period (s) | SE 5 | SE 6 | SE 6 | W 13 | W 13 | NNE 7 | S 19 | S 19 | S 18 | S 18 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SW 18 | NNE 7 | NNE 6 | N 7 | SW 17 |
| kJ | 7 | 9 | 5 | 29 | 28 | 10 | 65 | 62 | 101 | 99 | 47 | 45 | 40 | 43 | 51 | 10 | 10 | 9 | 73 |
Swell 3 Height (m) Direction Period (s) | W 13 | W 13 | W 13 | NNE 7 | NNE 7 | S 19 | NNE 7 | NNE 7 | NNE 6 | N 8 | N 8 | N 8 | NNE 7 | NNE 7 | NNE 7 | SW 18 | SW 18 | SW 18 | ESE 6 |
| kJ | 30 | 30 | 30 | 10 | 10 | 66 | 5 | 10 | 6 | 10 | 5 | 4 | 11 | 11 | 10 | 82 | 50 | 49 | 6 |
Wind waves Height (m) Direction Period (s) | E 8 | E 6 | E 6 | E 5 | E 8 | E 8 | E 5 | E 8 | — | E 8 | E 8 | E 8 | — | E 8 | E 4 | — | E 8 | E 5 | E 6 |
| kJ | 257 | 196 | 78 | 33 | 195 | 136 | 22 | 223 | — | 190 | 185 | 152 | — | 94 | 18 | — | 89 | 115 | 86 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 12 | 4 | 4 | 12 | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 13 | 12 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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