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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 pm Tuesday 26 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 normal for this time of year)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 5PM is: 0.4m 12s primary swell from a South direction (forecast issued at 01:00pm May 26). An open ocean swell of 0.4m 6s is not directed at the surf break, a second open ocean swell of 1.8m 6s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (26 May) | 1.5ft (0.4m) | 13s |
| Afternoon (26 May) | 1.5ft (0.5m) | 16s |
| Evening (26 May) | 1.5ft (0.5m) | 15s |
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 Thu afternoon. Warm (max 26°C on Tue afternoon, min 22°C on Tue night). Wind will be generally light. | ||||||||||||||||||||||||
Tue 26 | Wednesday 27 | Thursday 28 | Fri 29 | |||||||||||||||||||||
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 | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 12 | S 16 | S 12 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | SSW 22 | SSW 21 | SSW 21 | SSW 21 | SSW 20 | |
49 | 121 | 46 | 112 | 104 | 103 | 102 | 100 | 97 | 92 | 88 | 87 | 85 | 83 | 80 | 74 | 73 | 72 | 72 | 156 | 153 | 256 | 343 | 311 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | off | off | off | glassy | off | off | off | off | cross-off | off | cross-off | glassy | cross-off | off | off | off | glassy | off | off | |
High Tide | 1:30PM0.59m | 00:53AM0.37m | 2:10PM0.66m | 1:38AM0.32m | 2:48PM0.70m | 2:22AM0.29m | ||||||||||||||||||
Low Tide | 7:45PM0.18m | 6:45AM-0.04m | 8:45PM0.16m | 7:16AM-0.05m | 9:36PM0.13m | 7:49AM-0.05m | ||||||||||||||||||
 |  | |  | | | | | | | | | | | | | |  |  | | | | | | |
 | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — | — | — | — | — | — | — | 5:45 | — |
 | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | 7:01 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | |
Temp °C | 26 | 26 | 26 | 23 | 23 | 22 | 22 | 23 | 25 | 26 | 25 | 23 | 23 | 22 | 22 | 23 | 25 | 25 | 25 | 24 | 23 | 23 | 22 | 23 |
27 | 26 | 25 | 21 | 22 | 21 | 22 | 22 | 25 | 27 | 25 | 21 | 23 | 22 | 22 | 23 | 26 | 25 | 25 | 24 | 23 | 25 | 23 | 23 | |
Swell 1 Height (m) Direction Period (s) | S 12 | S 16 | SE 6 | S 15 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 12 | S 12 | SSW 21 | SSW 21 | SSW 20 |
 kJ | 49 | 121 | 9 | 112 | 104 | 103 | 102 | 100 | 97 | 92 | 88 | 87 | 85 | 83 | 80 | 74 | 73 | 72 | 72 | 71 | 68 | 256 | 343 | 311 |
Swell 2 Height (m) Direction Period (s) | NNE 7 | SE 6 | S 12 | SE 6 | SE 6 | NW 16 | NW 16 | NW 15 | NW 15 | NW 14 | NW 14 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | SSW 21 | S 12 | S 11 | S 11 |
| kJ | 11 | 9 | 46 | 18 | 5 | 93 | 91 | 79 | 77 | 74 | 67 | 68 | 65 | 61 | 61 | 61 | 58 | 53 | 52 | 37 | 153 | 43 | 64 | 61 |
Swell 3 Height (m) Direction Period (s) | SE 6 | NNE 7 | S 16 | NNE 8 | NW 18 | NE 7 | SE 6 | SE 5 | NNE 7 | SE 5 | NNE 6 | NNE 5 | NNE 6 | SE 5 | SE 5 | NNE 6 | NNE 6 | SSW 23 | NNE 5 | SSW 22 | NW 12 | NW 12 | NNE 10 | NNE 11 |
| kJ | 6 | 11 | 43 | 12 | 49 | 13 | 9 | 4 | 4 | 1 | 6 | 5 | 7 | 6 | 4 | 4 | 4 | 53 | 6 | 156 | 37 | 36 | 37 | 37 |
Wind waves Height (m) Direction Period (s) | E 6 | E 6 | E 6 | E 6 | ENE 2 | SE 5 | E 6 | E 6 | E 8 | NNE 6 | E 8 | E 5 | E 5 | E 5 | E 5 | E 5 | E 7 | NNE 6 | E 5 | E 6 | E 6 | E 5 | E 5 | E 5 |
| kJ | 124 | 194 | 245 | 282 | 1 | 7 | 125 | 72 | 133 | 8 | 110 | 97 | 83 | 97 | 64 | 32 | 123 | 7 | 83 | 158 | 121 | 83 | 31 | 52 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 4 | 13 | 12 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 4 | 4 | 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)
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