Surf Forecasts:
How big are the waves at Grandma's today (14 Aug):
- Morning surf: Morning surf (14 Aug, local time) - 3.5ft (1.0m), 14s period with S swell.
- Afternoon surf: Afternoon surf (14 Aug, local time) - 3ft (0.9m), 14s period with S swell.
- Evening surf: Evening surf (14 Aug, local time) - 2.5ft (0.8m), 14s period with S swell.
The current surf forecast for Grandma's at 3PM is: 0.9m 14s primary swell from a South direction (forecast issued at 07:00am August 14). An open ocean swell of 0.3m 11s is not directed at the surf break, a second open ocean swell of 0.5m 6s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Aug) | 3.5ft (1.0m) | 14s |
| Afternoon (14 Aug) | 3ft (0.9m) | 14s |
| Evening (14 Aug) | 2.5ft (0.8m) | 14s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 35mm), heaviest during Sat night. Warm (max 29°C on Sun afternoon, min 25°C on Sat night). Winds decreasing (strong winds from the NE on Sat night, calm by Sun afternoon). | |||||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | S 15 | S 14 | 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 14 | S 14 | S 8 | S 16 | S 16 | S 16 | S 16 | S 13 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 435 | 429 | 333 | 333 | 333 | 261 | 253 | 236 | 229 | 225 | 173 | 171 | 171 | 171 | 176 | 189 | 315 | 161 | 254 | 131 | 125 | 125 | 168 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | off | off | off | off | cross-off | off | off | off | cross-off | cross-off | cross-off | glassy | glassy | cross-on | glassy | off |
High Tide | 5:15AM0.47m | 5:22PM0.70m | 6:03AM0.51m | 5:57PM0.61m | 6:53AM0.54m | 6:31PM0.53m | |||||||||||||||||
Low Tide | 10:36AM0.07m | 11:45PM0.05m | 11:28AM0.13m | 00:14AM0.05m | 12:23PM0.19m | ||||||||||||||||||
 |  | |  | |  | |  | |  | |  |  |  | |  |  | | | | | | | |
 | 6:03 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | 6:55 | — | — | — | — | — | — | — | 6:54 | — | — | — | — | — | — | — | 6:54 | — | — |
mm | — | — | — | — | — | — | — | 1 | — | 2 | 1 | 1 | — | — | — | 5 | 16 | 1 | 2 | — | 1 | 1 | 3 |
Temp °C | 24 | 26 | 28 | 28 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 28 | 28 | 26 | 25 | 25 | 26 | 28 | 28 | 28 | 29 | 28 | 26 |
Feels °C | 24 | 25 | 27 | 28 | 27 | 27 | 27 | 26 | 25 | 26 | 29 | 30 | 30 | 25 | 22 | 23 | 27 | 31 | 33 | 33 | 33 | 33 | 29 |
Swell 1 Height (m) Direction Period (s) | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | ESE 11 | ESE 11 | ESE 10 | S 14 | S 14 | S 8 | S 8 | S 7 | S 7 | S 7 | S 6 |
| kJ | 435 | 429 | 333 | 333 | 333 | 261 | 253 | 236 | 229 | 225 | 173 | 171 | 146 | 143 | 135 | 189 | 315 | 161 | 181 | 131 | 116 | 88 | 63 |
Swell 2 Height (m) Direction Period (s) | SE 10 | ESE 10 | ESE 11 | ESE 11 | SE 11 | ESE 11 | ESE 12 | ESE 12 | ESE 12 | ESE 12 | ESE 12 | NNE 7 | S 13 | S 13 | S 13 | NNE 8 | ESE 10 | ESE 10 | S 16 | S 13 | S 13 | S 13 | S 13 |
| kJ | 24 | 10 | 12 | 12 | 30 | 49 | 55 | 56 | 55 | 55 | 77 | 15 | 171 | 171 | 176 | 22 | 121 | 38 | 254 | 125 | 123 | 123 | 168 |
Swell 3 Height (m) Direction Period (s) | W 11 | W 11 | W 12 | W 12 | N 6 | SSW 17 | SW 17 | W 11 | W 11 | W 11 | N 4 | W 11 | NNE 7 | NNE 8 | NNE 7 | S 18 | NE 8 | SSW 13 | ESE 9 | S 16 | S 16 | S 16 | S 16 |
| kJ | 10 | 10 | 11 | 11 | 3 | 30 | 12 | 10 | 9 | 9 | 9 | 10 | 18 | 20 | 19 | 56 | 15 | 55 | 26 | 129 | 125 | 125 | 129 |
Wind waves Height (m) Direction Period (s) | NNE 6 | NNE 6 | NNE 6 | NNE 6 | NNE 3 | NNE 6 | NNE 6 | NNE 6 | NNE 4 | NNE 4 | E 3 | ESE 11 | ENE 3 | ENE 3 | NE 3 | ESE 11 | E 4 | ENE 3 | E 9 | E 9 | — | E 8 | E 8 |
| kJ | 7 | 10 | 11 | 20 | 4 | 15 | 14 | 21 | 14 | 17 | 1 | 126 | 2 | 4 | 5 | 322 | 13 | 4 | 753 | 429 | — | 339 | 282 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 134 | 123 | 134 | 13 | 123 | 12 | 161 | 345 | 345 | 193 | 13 | 4 | 4 | 14 | 4 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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