Surf Forecasts:
How big are the waves at Grandma's today (13 Jul):
- Afternoon surf: Afternoon surf (13 Jul, local time) - 2.5ft (0.7m), 15s period with SW swell.
- Evening surf: Evening surf (13 Jul, local time) - 2.5ft (0.7m), 14s period with SW swell.
The current surf forecast for Grandma's at 11PM is: 0.6m 14s primary swell from a Southwest direction and 0.3m 18s secondary swell from a West direction (forecast issued at 07:00pm July 13). An open ocean swell of 0.9m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Jul) | - | - |
| Afternoon (13 Jul) | 2.5ft (0.7m) | 15s |
| Evening (13 Jul) | 2.5ft (0.7m) | 14s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Tue afternoon. Warm (max 27°C on Thu morning, min 23°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 13 | Tuesday 14 | Wednesday 15 | Thu 16 | |||||||||||||||||||||
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) | SW 15 | SW 14 | SW 14 | SSW 14 | SSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | W 16 | SSW 17 | SSW 17 | SSW 18 | W 15 | W 15 | W 15 | SSW 15 | SSW 15 | SW 16 | W 15 | W 15 | SSW 16 | SSW 17 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 217 | 214 | 167 | 134 | 133 | 155 | 151 | 189 | 186 | 183 | 125 | 195 | 202 | 204 | 168 | 165 | 163 | 188 | 209 | 251 | 159 | 155 | 173 | 188 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | off | cross-off | off | cross-off | off | off | cross-off | glassy | glassy | cross-on | glassy | glassy | cross-off | cross-off | glassy | off | glassy | cross-on | on |
High Tide | 3:49PM0.91m | 3:54AM0.28m | 4:33PM0.89m | 4:46AM0.30m | 5:15PM0.85m | 5:39AM0.34m | ||||||||||||||||||
Low Tide | 10:56PM0.05m | 9:02AM-0.07m | 11:34PM0.03m | 9:52AM-0.04m | 00:10AM0.03m | 10:42AM0.01m | ||||||||||||||||||
 |  |  | | |  | |  |  | | | | | | | | | | | | | | | | |
 | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:54 | — | — | — |
 | 7:09 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | — | — | — | 7:09 | — | — | — | — | — | — | 7:09 |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 24 | 24 | 23 | 24 | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 27 | 27 |
Feels °C | 27 | 25 | 25 | 25 | 24 | 25 | 28 | 28 | 27 | 27 | 28 | 26 | 27 | 28 | 28 | 29 | 30 | 29 | 28 | 28 | 27 | 27 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 14 | SSW 14 | SSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SSW 17 | SSW 17 | W 15 | SSW 13 | SSW 13 | SSW 14 | SSW 15 | SSW 15 | SW 16 | W 15 | W 15 | W 14 | W 14 |
| kJ | 217 | 214 | 167 | 134 | 133 | 155 | 151 | 189 | 186 | 183 | 116 | 195 | 202 | 170 | 109 | 108 | 133 | 188 | 209 | 251 | 159 | 155 | 153 | 106 |
Swell 2 Height (m) Direction Period (s) | NNE 7 | NNE 7 | W 18 | W 18 | W 18 | W 17 | W 16 | W 16 | W 16 | W 16 | W 16 | SW 13 | W 15 | SSW 18 | W 15 | W 15 | W 15 | W 15 | W 15 | W 15 | SSW 13 | SW 13 | SSW 16 | SSW 17 |
| kJ | 15 | 15 | 55 | 97 | 97 | 89 | 83 | 129 | 129 | 129 | 125 | 80 | 116 | 204 | 168 | 165 | 163 | 161 | 161 | 159 | 120 | 84 | 173 | 188 |
Swell 3 Height (m) Direction Period (s) | W 19 | W 18 | N 7 | N 7 | SW 18 | SW 19 | SW 19 | NNE 7 | NNE 7 | NNE 8 | SW 18 | W 15 | SW 13 | SW 13 | SSW 18 | SSW 18 | NNE 7 | N 7 | NNE 8 | NNE 8 | SSW 16 | SSW 16 | SW 13 | SSW 13 |
| kJ | 63 | 55 | 8 | 8 | 86 | 94 | 95 | 18 | 18 | 19 | 78 | 116 | 80 | 79 | 121 | 120 | 26 | 26 | 20 | 12 | 102 | 100 | 82 | 65 |
Wind waves Height (m) Direction Period (s) | E 8 | E 5 | E 5 | E 8 | E 8 | E 4 | — | — | ESE 4 | E 8 | ESE 4 | SE 5 | SSE 10 | E 4 | E 4 | — | E 5 | E 5 | E 5 | E 5 | SE 5 | E 5 | E 5 | E 6 |
| kJ | 190 | 110 | 42 | 181 | 148 | 17 | — | — | 9 | 92 | 26 | 3 | 20 | 21 | 9 | — | 27 | 52 | 73 | 54 | 4 | 64 | 57 | 72 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 14 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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