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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 1 am Thursday 14 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
25.4° C
(Which is slightly warmer than usual)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 8AM is: 0.3m 13s primary swell from a South direction (forecast issued at 01:00am May 14). An open ocean swell of 0.4m 16s is not directed at the surf break, a second open ocean swell of 0.3m 8s is not directed at the surf break, a second open ocean swell of 1.1m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 May) | 1ft (0.3m) | 13s |
| Afternoon (14 May) | 1.5ft (0.5m) | 15s |
| Evening (14 May) | - | - |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 9mm), mostly falling on Fri afternoon. Warm (max 27°C on Sat afternoon, min 24°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 14 | Friday 15 | Saturday 16 | ||||||||||||||||||||||
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 | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SW 15 | S 13 | S 13 | NW 15 | NW 15 | NW 15 | E 6 | NW 14 | NW 14 | NW 13 | SSW 16 | SSW 16 | NW 13 | SSW 16 | SSW 16 | SW 16 | SW 16 | SW 14 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 14 | |
33 | 30 | 29 | 116 | 109 | 107 | 0 | 158 | 149 | 144 | 102 | 99 | 99 | 99 | 99 | 66 | 40 | 49 | 121 | 54 | 54 | 53 | 54 | 81 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | cross-off | glassy | glassy | off | glassy | glassy | glassy | glassy | glassy | cross-on | cross-on | cross-off | off | off | glassy | glassy | glassy | glassy | glassy | glassy | glassy | |
High Tide | 1:46AM0.39m | 2:49PM0.73m | 2:32AM0.34m | 3:32PM0.79m | 3:19AM0.29m | 4:17PM0.83m | ||||||||||||||||||
Low Tide | 7:34AM-0.09m | 9:16PM0.07m | 8:10AM-0.10m | 10:14PM0.05m | 8:49AM-0.11m | |||||||||||||||||||
 | |  |  |  | |  | | | | | |  | |  | | | | | | | | | | |
 | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:55 | — | — | — | — | — | — | — | 6:55 | — | — | — | — | — | — | — | 6:55 | — | — |
— | — | — | — | 1 | 1 | — | — | — | — | — | — | 2 | 3 | 1 | — | — | — | — | — | — | 1 | — | — | |
Temp °C | 23 | 23 | 24 | 26 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 26 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 26 | 27 | 27 | 26 | 26 |
23 | 24 | 25 | 28 | 27 | 27 | 27 | 26 | 27 | 27 | 26 | 29 | 27 | 27 | 27 | 26 | 26 | 27 | 27 | 29 | 31 | 30 | 30 | 30 | |
Swell 1 Height (m) Direction Period (s) | N 8 | N 8 | NW 16 | NW 15 | NW 15 | NW 15 | NNW 14 | NW 14 | NW 14 | NW 13 | NNW 13 | NNW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SSW 14 |
 kJ | 21 | 11 | 68 | 116 | 109 | 107 | 140 | 158 | 149 | 144 | 116 | 113 | 78 | 73 | 71 | 36 | 35 | 33 | 121 | 54 | 54 | 53 | 53 | 81 |
Swell 2 Height (m) Direction Period (s) | SE 7 | S 13 | N 8 | S 13 | NNE 8 | N 8 | SE 6 | SE 6 | SE 5 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SW 16 | SW 16 | SW 14 | NW 11 | NW 11 | SSW 16 | SSW 16 | SSW 17 | SSW 17 |
| kJ | 14 | 30 | 11 | 51 | 22 | 12 | 9 | 9 | 4 | 67 | 102 | 99 | 99 | 99 | 99 | 66 | 40 | 49 | 31 | 31 | 53 | 52 | 54 | 56 |
Swell 3 Height (m) Direction Period (s) | SW 15 | NW 16 | S 13 | NNE 8 | SW 14 | SW 14 | N 8 | N 8 | SW 17 | SE 5 | SE 5 | SSE 11 | S 11 | S 11 | S 11 | SSE 11 | SW 13 | SSE 11 | S 11 | SSE 12 | NW 11 | NW 11 | NW 11 | NW 11 |
| kJ | 33 | 69 | 29 | 13 | 30 | 48 | 12 | 12 | 43 | 4 | 4 | 25 | 21 | 21 | 21 | 23 | 28 | 23 | 21 | 27 | 19 | 19 | 19 | 18 |
Wind waves Height (m) Direction Period (s) | E 7 | E 8 | E 6 | E 8 | E 8 | E 8 | E 6 | E 6 | E 6 | E 8 | E 8 | E 6 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | — | — | N 2 | — | E 8 |
| kJ | 212 | 193 | 72 | 248 | 196 | 196 | 173 | 125 | 117 | 213 | 181 | 66 | 248 | 240 | 217 | 190 | 132 | 223 | 224 | — | — | 1 | — | 329 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 12 | 4 | 12 | 12 | 12 | 12 | 4 | 4 | 12 | 4 | 4 | 14 | 14 | 4 | 4 | 12 | 12 | 4 | 4 | 4 | 4 | 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
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