Grandma's Surf Forecast

/ HAW – Maui (46 breaks) / Hawaii (267 breaks) /

USA (1297 breaks) / Lat Long: (20.79° N 156.56° W)

Surf Forecasts:

Grandma's surfForecast / HAW – Maui / USA

48hr Weather and Surf, issued 1 pm Sunday 16 Nov 2025 HST

Forecast 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 26.1° 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 8PM is: 0.4m 14s primary swell from a Northwest direction and 0.4m 14s secondary swell from a Southwest direction (forecast issued at 01:00pm November 16). An open ocean swell of 1.2m 5s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (HST) & Date	Wave Height	Wave Period
Morning (16 Nov)	1.5ft (0.4m)	15s
Afternoon (16 Nov)	1.5ft (0.4m)	14s
Evening (16 Nov)	1.5ft (0.4m)	14s

Table - waves today at Grandma's. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Sunday 16					Monday 17								Tuesday 18								Wednesday 19
	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
Rating (10 max)	1	1	1	1	1	1	1	1	0	0	0	0	0	0	0	0	1	0	1	0	1	0	1	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	NW	NW	NW	NW	SW	SW	SW	NW	SW	SW	SW	SW	SW	SW	SW	SW	NW	NW	NW	SW	SW	SW	NW	NW
Period(s) (?)	14	14	14	14	14	14	14	13	13	13	13	13	13	13	13	13	13	13	16	12	12	12	15	14
Wave Graph (?)
kJ (?)	73	72	71	68	63	61	61	61	45	27	27	27	44	44	44	27	28	27	41	23	37	23	104	102
Wind (km/h)	WNW	N	N	SW	NE	NNE	NE	NNE	NW	WNW	SSW	W	N	NNE	NNE	NE	NNE	SE	NNE	NNE	NNE	NNE	NNE	NE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	glass	cross- off	cross- off	glass	glass	cross- off	off	off	glass	glass	glass	glass	cross- off	cross- off	off	off	glass	cross	off	off	off	off	off	off
High Tide / height (m)		1:20PM 0.45					2:26AM 0.68				2:01PM 0.41				3:01AM 0.73				2:40PM 0.37				3:37AM 0.76
Low Tide / height (m)				7:14PM 0.01					8:45AM 0.18			7:41PM 0.00					9:33AM 0.16				8:11PM -0.00

	Sunday 16					Monday 17								Tuesday 18								Wednesday 19
Sunrise	-	-	-	-	-	-	-	6:37	-	-	-	-	-	-	-	6:37	-	-	-	-	-	-	-	6:37
Sunset	-	-	5:45	-	-	-	-	-	-	-	5:44	-	-	-	-	-	-	-	5:44	-	-	-	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	1	1
Temp. °C	26	25	25	25	24	24	23	24	25	25	25	25	24	24	24	24	25	25	24	23	22	22	22	23
Feels °C (?)	28	27	27	29	27	26	25	26	27	27	27	28	26	26	26	26	28	25	24	23	21	22	23	25

Map Icons:
Break
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.