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Grandma's Surf Forecast
/ HAW – Maui (46 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Grandma's surfForecast / HAW – Maui / USA
48hr Weather and Surf, issued 7 am Sunday 03 May 2026 HSTForecast update in hr min s Forecast update imminent
Grandma's surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Grandma's sea temperature is
25.2° C
(Which is slightly warmer than usual)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 11AM is: 0.5m 13s primary swell from a South direction and 0.4m 12s secondary swell from a Northwest direction (forecast issued at 07:00am May 03). An open ocean swell of 1.2m 8s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (03 May) | 1.5ft (0.5m) | 16s |
| Afternoon (03 May) | 2ft (0.6m) | 14s |
| Evening (03 May) | 2ft (0.6m) | 14s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Mon afternoon. Warm (max 26°C on Sun morning, min 22°C on Sun night). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 3 | Monday 4 | Tuesday 5 | Wed 6 | |||||||||||||||||||||
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 | 2 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSW 16 | S 16 | S 13 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | SSW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | |
146 | 131 | 87 | 140 | 150 | 150 | 150 | 106 | 104 | 96 | 90 | 89 | 60 | 82 | 77 | 72 | 71 | 69 | 68 | 67 | 63 | 59 | 58 | 58 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | glassy | off | off | off | off | off | off | cross-off | cross-off | off | off | off | cross-off | glassy | glassy | glassy | glassy | cross-on | glassy | glassy | glassy | glassy | |
High Tide | 4:44AM0.27m | 5:36PM0.70m | 5:26AM0.24m | 6:18PM0.69m | 6:18AM0.21m | 7:04PM0.67m | ||||||||||||||||||
Low Tide | 10:04AM-0.02m | 00:30AM0.10m | 10:40AM0.00m | 1:23AM0.10m | 11:21AM0.03m | |||||||||||||||||||
 |  | |  | |  | | | | | |  |  | | | | | | | | | | | | |
 | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | 5:52 |
 | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:51 | — | — | — | — | — | — | — | 6:52 | — | — | 6:52 |
— | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 24 | 26 | 26 | 25 | 23 | 23 | 22 | 22 | 23 | 25 | 25 | 24 | 23 | 23 | 23 | 23 | 23 | 25 | 25 | 25 | 24 | 24 | 23 |
23 | 25 | 28 | 27 | 24 | 22 | 23 | 22 | 23 | 24 | 27 | 27 | 25 | 24 | 25 | 26 | 26 | 26 | 27 | 27 | 28 | 27 | 27 | 26 | |
Swell 1 Height (m) Direction Period (s) | NNW 13 | NW 13 | S 13 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | SSW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 |
 kJ | 114 | 82 | 87 | 140 | 150 | 150 | 150 | 106 | 104 | 96 | 90 | 89 | 58 | 82 | 77 | 72 | 71 | 69 | 68 | 67 | 63 | 59 | 58 | 58 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | S 16 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 |
| kJ | 146 | 131 | 53 | 52 | 52 | 51 | 50 | 33 | 31 | 30 | 19 | 18 | 60 | 57 | 56 | 55 | 53 | 30 | 29 | 49 | 28 | 28 | 27 | 27 |
Swell 3 Height (m) Direction Period (s) | S 13 | SSW 13 | SSW 16 | NNE 6 | NNE 6 | ESE 5 | ESE 5 | SE 6 | SW 19 | SSW 19 | N 5 | NW 13 | SE 5 | SE 5 | SE 6 | SE 6 | SE 5 | SE 5 | SSW 18 | SSW 18 | S 4 | SSW 17 | SSW 16 | SW 16 |
| kJ | 87 | 55 | 85 | 3 | 7 | 2 | 3 | 5 | 59 | 37 | 2 | 27 | 1 | 4 | 5 | 8 | 7 | 6 | 31 | 31 | 2 | 28 | 26 | 42 |
Wind waves Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 5 | E 8 | E 5 | E 5 | E 5 | E 5 | E 8 | E 8 | NNE 5 | NNE 5 | NNE 3 | E 6 | E 6 | E 5 | E 6 | S 2 | — | — | — | — | — |
| kJ | 156 | 160 | 190 | 35 | 185 | 93 | 65 | 67 | 54 | 176 | 148 | 5 | 5 | 2 | 89 | 105 | 114 | 62 | 1 | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 12 | 12 | 12 | 12 | 4 | 4 | 4 | 4 | 12 | 12 | 4 | 4 | 4 | 4 | 14 | 4 | 13 | 12 | 12 | 12 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
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Ocean Swells (m)- Wind Speed (km/h)
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