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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 Thursday 30 Apr 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
25.3° C
(Which is slightly warmer than usual)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 3PM is: 0.4m 16s primary swell from a South-southwest direction (forecast issued at 07:00am April 30). An open ocean swell of 0.4m 12s is not directed at the surf break, a second open ocean swell of 1.3m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 Apr) | 0.5ft (0.2m) | 12s |
| Afternoon (30 Apr) | 1.5ft (0.4m) | 16s |
| Evening (30 Apr) | 1ft (0.3m) | 16s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 26°C on Thu afternoon, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 30 | Friday 1 | Saturday 2 | Sun 3 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SE 6 | SSW 12 | S 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | S 15 | S 15 | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | NW 17 | NW 16 | NW 17 | S 14 | NW 15 | NW 15 | SSW 14 | NW 14 | S 16 | S 14 | |
5 | 15 | 46 | 86 | 86 | 51 | 51 | 39 | 68 | 72 | 73 | 76 | 85 | 86 | 50 | 133 | 142 | 150 | 183 | 174 | 70 | 96 | 177 | 93 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | off | off | cross-off | off | off | off | off | off | |
High Tide | 2:53AM0.38m | 3:44PM0.67m | 3:29AM0.34m | 4:20PM0.70m | 4:05AM0.30m | 4:57PM0.70m | ||||||||||||||||||
Low Tide | 8:32AM-0.04m | 10:09PM0.10m | 9:00AM-0.04m | 10:55PM0.10m | 9:31AM-0.04m | 11:41PM0.10m | ||||||||||||||||||
 |  | |  | | | | | | | | | | | | | | | | | |  | | | |
 | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | 5:54 |
 | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:51 | — | — | 6:51 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 24 | 25 | 26 | 25 | 23 | 23 | 22 | 22 | 24 | 26 | 26 | 25 | 24 | 23 | 22 | 22 | 24 | 25 | 25 | 25 | 23 | 23 | 22 |
21 | 23 | 24 | 26 | 23 | 22 | 23 | 21 | 21 | 23 | 26 | 26 | 25 | 24 | 23 | 22 | 22 | 24 | 26 | 26 | 26 | 23 | 23 | 22 | |
Swell 1 Height (m) Direction Period (s) | NW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 11 | NW 11 | NNW 13 | NNW 13 | N 13 | NNW 12 | NNW 12 | SSW 15 | SSW 16 | NNW 11 | NNW 11 | NW 16 | NW 17 | S 14 | NW 15 | NW 15 | NNW 14 | NW 14 | S 16 | NW 13 |
 kJ | 39 | 57 | 56 | 54 | 51 | 33 | 66 | 67 | 121 | 60 | 56 | 76 | 85 | 51 | 48 | 133 | 142 | 150 | 183 | 174 | 136 | 96 | 177 | 85 |
Swell 2 Height (m) Direction Period (s) | SE 6 | SE 5 | SE 6 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SE 6 | S 15 | SSW 15 | SSW 15 | NNW 12 | NNW 12 | SSW 16 | SSW 16 | SSW 16 | SSW 14 | NW 15 | S 14 | S 14 | SSW 14 | SSW 14 | NW 13 | S 14 |
| kJ | 5 | 4 | 5 | 86 | 86 | 51 | 51 | 8 | 68 | 72 | 73 | 56 | 54 | 86 | 50 | 84 | 63 | 115 | 106 | 107 | 70 | 70 | 88 | 93 |
Swell 3 Height (m) Direction Period (s) | NNE 5 | SSW 12 | S 16 | SE 6 | SE 5 | SE 5 | SE 6 | S 15 | SE 6 | NNE 8 | NNE 8 | SE 6 | SE 6 | NNE 7 | NW 17 | NW 11 | NW 11 | NNW 11 | SSW 18 | SSW 18 | NNE 6 | N 6 | NNE 6 | SSW 16 |
| kJ | 2 | 15 | 46 | 8 | 4 | 5 | 5 | 39 | 8 | 13 | 12 | 8 | 11 | 10 | 44 | 31 | 32 | 24 | 61 | 61 | 8 | 7 | 7 | 86 |
Wind waves Height (m) Direction Period (s) | E 6 | — | E 6 | E 6 | E 6 | E 6 | — | — | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | E 8 | E 5 | E 5 | E 5 | E 8 | E 5 | E 8 | E 6 | E 5 |
| kJ | 50 | — | 130 | 127 | 94 | 89 | — | — | 105 | 92 | 149 | 151 | 156 | 96 | 92 | 135 | 42 | 40 | 40 | 234 | 40 | 314 | 72 | 57 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 17 | 15 | 4 | 12 | 13 | 12 | 12 | 12 | 12 | 12 | 4 | 4 | 12 | 12 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 4 | 4 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Grandma's surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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