Surf Forecasts:
How big are the waves at Grandma's today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 2.5ft (0.8m), 14s period with S swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 2.5ft (0.8m), 14s period with S swell.
- Evening surf: Evening surf (17 Aug, local time) - 2.5ft (0.7m), 14s period with S swell.
The current surf forecast for Grandma's at 2PM is: 0.8m 14s primary swell from a South direction (forecast issued at 07:00am August 17). An open ocean swell of 0.2m 6s is not directed at the surf break, a second 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 Aug) | 2.5ft (0.8m) | 14s |
| Afternoon (17 Aug) | 2.5ft (0.8m) | 14s |
| Evening (17 Aug) | 2.5ft (0.7m) | 14s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 28°C on Mon afternoon, min 24°C on Mon night). Wind will be generally light. | |||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||||||||
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 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 | SW 18 | S 13 | S 13 | S 12 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 268 | 268 | 203 | 264 | 198 | 191 | 178 | 125 | 125 | 121 | 119 | 119 | 119 | 84 | 84 | 82 | 44 | 67 | 66 | 68 | 94 | 65 | 66 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | off | glassy | off | off | cross-off | off | cross-off | off | off | glassy | cross-off | cross-off | cross-off | cross-off |
High Tide | 7:48AM0.57m | 7:05PM0.45m | 8:49AM0.59m | 7:47PM0.37m | 9:55AM0.62m | 8:54PM0.32m | |||||||||||||||||
Low Tide | 1:27PM0.24m | 1:18AM0.06m | 2:48PM0.28m | 1:59AM0.08m | 4:45PM0.29m | ||||||||||||||||||
 |  | | |  | | |  | | | | | | | | | | | | | | | | |
 | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | 6:53 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 26 | 28 | 27 | 25 | 24 | 24 | 24 | 25 | 27 | 27 | 26 | 25 | 24 | 24 | 24 | 25 | 27 | 27 | 26 | 25 | 25 |
Feels °C | 29 | 30 | 29 | 31 | 29 | 26 | 25 | 26 | 26 | 27 | 30 | 29 | 27 | 25 | 25 | 26 | 26 | 27 | 30 | 29 | 27 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | 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 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 |
| kJ | 268 | 268 | 203 | 264 | 198 | 191 | 178 | 125 | 125 | 121 | 119 | 119 | 119 | 84 | 84 | 82 | 44 | 44 | 44 | 45 | 45 | 45 | 45 |
Swell 2 Height (m) Direction Period (s) | S 6 | S 5 | SSW 5 | ESE 6 | S 5 | SSW 5 | N 4 | ESE 5 | SE 6 | SW 16 | SW 17 | SW 17 | SW 18 | SW 18 | SW 18 | SSW 18 | W 12 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 |
| kJ | 32 | 14 | 9 | 3 | 4 | 2 | 1 | 5 | 8 | 42 | 73 | 77 | 79 | 80 | 49 | 31 | 11 | 67 | 66 | 68 | 94 | 65 | 66 |
Swell 3 Height (m) Direction Period (s) | NNE 7 | NNE 7 | NNE 6 | SSW 19 | ESE 6 | W 11 | ESE 5 | WNW 6 | W 6 | SE 5 | N 5 | W 13 | W 13 | W 13 | W 13 | W 12 | SSW 15 | W 12 | W 12 | W 12 | W 12 | NNE 6 | NNE 6 |
| kJ | 4 | 5 | 3 | 34 | 3 | 10 | 2 | 4 | 3 | 3 | 2 | 14 | 14 | 14 | 13 | 11 | 22 | 11 | 11 | 11 | 11 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 5 | E 6 | E 8 | NNE 6 | E 5 | E 5 | E 5 | E 5 | E 8 | NNE 5 | N 5 | NNE 3 | NE 3 | NNE 3 | E 4 | E 4 | — | NNE 6 | NNE 6 | E 8 | E 4 |
| kJ | 229 | 222 | 124 | 121 | 133 | 3 | 96 | 85 | 99 | 66 | 152 | 5 | 5 | 3 | 2 | 2 | 25 | 11 | — | 8 | 13 | 104 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 12 | 4 |
Best forecast wave conditions in Maui | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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