Surf Forecasts:
How big are the waves at Grandma's today (27 Sep):
- Afternoon surf: Afternoon surf (27 Sep, local time) - 2ft (0.6m), 15s period with SSW swell.
- Evening surf: Evening surf (27 Sep, local time) - 2ft (0.6m), 13s period with SSW swell.
The current surf forecast for Grandma's at 11PM is: 0.5m 13s primary swell from a South-southwest direction and 0.6m 9s secondary swell from a South direction (forecast issued at 07:00pm September 27). An open ocean swell of 0.6m 8s is not directed at the surf break, a second open ocean swell of 3.0m 8s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Sep) | - | - |
| Afternoon (27 Sep) | 2ft (0.6m) | 15s |
| Evening (27 Sep) | 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 Mon morning, min 25°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Sun 27 | Monday 28 | Tuesday 29 | |||||||||||||||||
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 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 14 | SSW 10 | SW 17 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 163 | 141 | 102 | 137 | 98 | 154 | 96 | 195 | 148 | 202 | 200 | 200 | 195 | 271 | 264 | 261 | 261 | 261 | 223 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | off | glassy | glassy | glassy | glassy | on | cross | glassy | cross-off | glassy | glassy | glassy | glassy | glassy | cross | cross | cross-off |
High Tide | 4:21PM0.52m | 5:11AM0.72m | 4:56PM0.45m | 5:58AM0.74m | 5:35PM0.39m | ||||||||||||||
Low Tide | 10:15PM0.02m | 11:25AM0.15m | 10:48PM0.02m | 12:26PM0.18m | |||||||||||||||
 |  | | | |  | | | | | | | | | | | | | | |
 | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — |
 | 6:16 | — | — | — | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:15 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 27 | 26 | 26 | 25 | 26 | 29 | 29 | 28 | 27 | 27 | 26 | 25 | 26 | 27 | 27 | 27 | 27 | 26 |
Feels °C | 31 | 28 | 27 | 29 | 28 | 29 | 32 | 30 | 30 | 30 | 30 | 29 | 28 | 29 | 30 | 30 | 29 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 9 | S 9 | S 9 | S 9 | S 9 | S 10 | SSW 10 | SSW 10 | SSW 9 | SSW 9 | SSW 8 | S 8 | SW 16 | SW 16 | SW 16 | SW 16 | SW 16 | SSW 16 |
| kJ | 92 | 81 | 58 | 83 | 83 | 85 | 90 | 195 | 128 | 86 | 59 | 54 | 49 | 271 | 264 | 261 | 261 | 261 | 223 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 13 | ESE 8 | SSW 13 | SSW 13 | SSW 13 | SW 14 | SSW 12 | SW 17 | SSW 17 | SSW 17 | SSW 17 | SSW 17 | SSW 8 | SSW 8 | SSW 8 | SSW 11 | SSW 7 | WSW 9 |
| kJ | 163 | 141 | 43 | 137 | 98 | 154 | 96 | 52 | 148 | 202 | 200 | 200 | 195 | 36 | 34 | 33 | 25 | 31 | 32 |
Swell 3 Height (m) Direction Period (s) | ESE 8 | ESE 8 | SSW 13 | ESE 8 | ESE 8 | ESE 7 | SSW 12 | SSW 18 | SSW 12 | SSW 12 | SW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 12 | NNW 12 | SSW 11 | SSW 11 |
| kJ | 45 | 37 | 102 | 33 | 33 | 20 | 81 | 120 | 51 | 50 | 42 | 47 | 46 | 27 | 25 | 26 | 27 | 23 | 24 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 8 | E 8 | E 6 | E 6 | E 8 | E 8 | E 8 | E 8 | S 7 | SE 3 | S 6 |
| kJ | 1216 | 1060 | 1009 | 915 | 786 | 618 | 448 | 428 | 392 | 266 | 197 | 181 | 271 | 201 | 163 | 161 | 39 | 2 | 16 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 14 | 14 | 4 | 12 | 4 | 4 | 4 | 4 | 14 | 14 | 22 | 12 |
Best forecast wave conditions in Maui | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Live Wave Height (m)
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