Surf Forecasts:
How big are the waves at Grandma's today (30 Jul):
- Morning surf: Morning surf (30 Jul, local time) - 2ft (0.6m), 13s period with S swell.
- Afternoon surf: Afternoon surf (30 Jul, local time) - 2.5ft (0.7m), 14s period with S swell.
- Evening surf: Evening surf (30 Jul, local time) - 2ft (0.6m), 13s period with S swell.
The current surf forecast for Grandma's at 8PM is: 0.7m 13s primary swell from a South direction and 0.4m 18s secondary swell from a Southwest direction (forecast issued at 01:00pm July 30). An open ocean swell of 1.1m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Jul) | 2ft (0.6m) | 13s |
| Afternoon (30 Jul) | 2.5ft (0.7m) | 14s |
| Evening (30 Jul) | 2ft (0.6m) | 13s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 29°C on Thu afternoon, min 24°C on Fri night). Wind will be generally light. | |||||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | |||||||||||||||||||
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) | S 14 | S 14 | S 13 | S 13 | S 13 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 189 | 181 | 173 | 168 | 125 | 130 | 127 | 127 | 125 | 122 | 158 | 150 | 148 | 146 | 106 | 102 | 93 | 91 | 91 | 91 | 93 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-off | cross-off | cross-off | off | off | off | glassy | off | off | off | off | off | off | off | cross-off | off | off | off | off |
High Tide | 4:59PM0.76m | 5:21AM0.37m | 5:29PM0.71m | 6:06AM0.41m | 5:59PM0.65m | ||||||||||||||||
Low Tide | 9:48AM0.04m | 11:39PM0.07m | 10:31AM0.07m | 00:05AM0.06m | 11:18AM0.11m | ||||||||||||||||
 | | |  | | | |  | | | |  | | | | | | | | | | |
 | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — |
 | — | — | 7:05 | — | — | — | — | — | — | — | 7:04 | — | — | — | — | — | — | — | 7:04 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 29 | 28 | 28 | 27 | 26 | 25 | 26 | 28 | 29 | 29 | 26 | 25 | 24 | 24 | 26 | 28 | 28 | 28 | 25 | 25 |
Feels °C | 31 | 32 | 31 | 31 | 31 | 29 | 27 | 28 | 31 | 30 | 29 | 26 | 24 | 23 | 24 | 26 | 29 | 29 | 29 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 |
| kJ | 189 | 181 | 173 | 168 | 125 | 123 | 121 | 121 | 119 | 78 | 158 | 150 | 148 | 146 | 106 | 102 | 93 | 91 | 91 | 91 | 93 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | S 12 | S 12 | S 12 | SSW 12 | SSW 12 | ESE 7 | ESE 6 | SE 6 | SE 6 | S 11 | S 11 |
| kJ | 80 | 152 | 152 | 79 | 76 | 130 | 127 | 127 | 125 | 122 | 75 | 73 | 72 | 47 | 47 | 20 | 14 | 8 | 8 | 22 | 23 |
Swell 3 Height (m) Direction Period (s) | NNE 6 | SW 13 | NNW 6 | N 6 | SE 6 | SE 7 | SE 7 | SE 6 | SE 6 | SE 7 | SE 7 | N 8 | ESE 7 | SE 7 | SE 8 | SSW 12 | S 12 | S 11 | S 11 | NE 8 | NNE 7 |
| kJ | 8 | 7 | 12 | 6 | 10 | 12 | 12 | 10 | 10 | 12 | 12 | 5 | 19 | 13 | 16 | 46 | 24 | 22 | 22 | 3 | 10 |
Wind waves Height (m) Direction Period (s) | E 8 | NW 2 | E 8 | E 8 | E 6 | E 7 | E 6 | E 6 | E 6 | E 7 | E 7 | ESE 7 | E 7 | NNE 8 | E 7 | E 7 | E 7 | E 8 | E 8 | E 6 | E 6 |
| kJ | 203 | 2 | 167 | 135 | 153 | 226 | 187 | 213 | 187 | 439 | 315 | 21 | 328 | 13 | 384 | 413 | 338 | 418 | 428 | 20 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 14 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 12 | 12 | 12 | 12 | 12 | 4 | 4 | 4 | 12 | 12 |
Best forecast wave conditions in Maui | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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