Grandma's 48 hour detailed Surf Forecast

Lat Long: 20.79° N 156.56° W

Issued: 7 am 04 Nov 2026 (local time)

Forecast update in hr min

Today's Grandma's sea temperature is

26.9°C

Grandma's surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Grandma's today (04 Nov):

Morning surf: Morning surf (04 Nov, local time) - 1ft (0.3m), 18s period with SSW swell.
Afternoon surf: Afternoon surf (04 Nov, local time) - 1.5ft (0.4m), 18s period with SW swell.
Evening surf: Evening surf (04 Nov, local time) - 1.5ft (0.4m), 18s period with SSW swell.

The current surf forecast for Grandma's at 12PM is: 0.3m 18s primary swell from a South-southwest direction (forecast issued at 07:00am November 04). An open ocean swell of 0.5m 12s is not directed at the surf break, a second open ocean swell of 0.4m 8s is not directed at the surf break, a second open ocean swell of 1.4m 6s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (HST) & Date	Wave Height	Wave Period
Morning (04 Nov)	1ft (0.3m)	18s
Afternoon (04 Nov)	1.5ft (0.4m)	18s
Evening (04 Nov)	1.5ft (0.4m)	18s

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

	Short Range Forecast Light rain (total 6mm), mostly falling on Fri morning. Warm (max 27°C on Wed morning, min 24°C on Wed night). Winds increasing (calm on Wed night, fresh winds from the NE by Fri night).
	Wednesday 4							Thursday 5								Friday 6								Sat 7
	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	5 AM
Rating (10 max)	1	1	1	1	1	1	1	0	1	1	1	1	1	1	1	1	0	2	2	1	1	1	1	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SSW 18	SSW 18	SSW 18	SW 18	SW 18	SSW 18	NW 20	NNW 20	SSW 16	SSW 16	SSW 16	SW 16	SW 16	SW 16	SSW 16	SSW 15	SSW 15	NW 14	NW 14	SSW 16	SSW 15	SSW 15	SSW 15	SSW 15	SSW 15
Wave Graph
kJ	64	63	63	80	79	121	198	0	104	103	100	125	65	64	95	92	88	305	305	82	79	73	73	72	72
Wind (km/h)	NNE	NE	NE	NNE	NE	NE	NNE	NNE	NE	NE	NE	NNE	NE	NNE	NNE	NNE	NNE	NNE	NE	NNE	NNE	NNE	NNE	NNE	NE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	off	off	off	off	off	off	glassy	glassy	off	off	off	off	off	off	off	off	off	off	off	off	off	off	off	off	off
High Tide				12:26PM0.59m				1:32AM0.59m				1:11PM0.53m					2:13AM0.66m			1:53PM0.47m					2:51AM0.72m
Low Tide		6:08AM0.20m				6:49PM0.03m				7:18AM0.19m				7:16PM0.02m					8:19AM0.17m			7:43PM0.00m


	6:30	—	—	—	—	—	—	—	6:30	—	—	—	—	—	—	—	6:31	—	—	—	—	—	—	—	6:31
	—	—	—	—	5:49	—	—	—	—	—	—	—	5:47	—	—	—	—	—	—	—	5:47	—	—	—	5:47
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	1	1	1	1	1	—
Temp °C	24	25	27	27	27	25	25	24	24	25	27	27	26	25	24	24	24	25	25	26	26	25	24	24	24
Feels °C	24	24	28	28	27	25	28	27	25	25	29	27	26	25	24	23	23	25	26	28	27	25	24	23	22
Swell 1 Height (m) Direction Period (s)	NNW 12	NNW 12	NNW 12	NNW 11	N 11	N 14	N 11	NNW 20	NNW 19	NW 18	NNW 17	NNW 17	NNW 16	NNW 16	NNW 16	NNW 16	NNW 15	NW 14	NW 14	NNW 14	NNW 14	NW 14	NW 14	NW 13	NW 13
kJ	82	81	78	43	91	181	62	485	617	727	789	735	691	666	657	499	377	305	305	264	261	203	191	183	178
Swell 2 Height (m) Direction Period (s)	NNE 8	NNE 8	NNE 8	NNE 8	SW 18	SSW 18	NW 20	N 13	N 12	N 12	SSW 16	SW 16	SW 16	SW 16	SSW 16	SSW 15	SSW 15	SSW 15	SW 15	ESE 10	SSW 15	ESE 10	SSW 15	SSW 15	SSW 15
kJ	21	20	20	19	79	121	198	121	72	71	100	125	65	64	95	92	88	86	57	38	79	37	73	72	72
Swell 3 Height (m) Direction Period (s)	SSW 18	SSW 18	SSW 18	SW 18	NW 15	NW 21	SE 6	SE 6	SSW 16	SSW 16	N 11	NNW 11	SE 6	SSW 15	ESE 7	SE 7	SE 10	SE 10	SE 10	SSW 16	SE 10	SSW 15	NNE 6	SE 10	SE 10
kJ	64	63	63	80	54	117	9	9	104	103	62	39	10	47	15	12	25	27	26	82	25	73	6	24	24
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	ESE 6	E 7	E 7	E 7	ESE 7	E 7	NE 7	NNE 6	NNE 3	E 9	E 10	E 10	E 9	E 9	NNE 6	NNE 6
kJ	151	98	125	139	119	138	165	187	218	15	285	233	226	15	254	13	16	2	651	875	580	685	606	18	19
Nearest Offshore or Glassy	The Cove HAW - Maui	The Cove HAW - Maui	Ma'alaea HAW - Maui	Ma'alaea HAW - Maui	The Cove HAW - Maui	The Cove HAW - Maui	The Cove HAW - Maui	The Cove HAW - Maui	Ma'alaea HAW - Maui	Kihei Cove HAW - Maui	Ma'alaea HAW - Maui	Ma'alaea HAW - Maui	The Cove HAW - Maui	The Cove HAW - Maui	The Cove HAW - Maui	Puamana HAW - Maui	Kawaihae Breakwater HAW - Big Island	Puamana HAW - Maui	The Cove HAW - Maui	The Cove HAW - Maui	The Cove HAW - Maui	The Cove HAW - Maui	The Cove HAW - Maui	Kawaihae Breakwater HAW - Big Island	Spencer Beach Park HAW - Big Island
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	2	1	1	1	2	1	1	1	1	1	1	1
Distance (km)	12	12	4	4	12	12	12	12	4	13	4	4	12	12	12	14	111	14	12	12	12	12	12	111	114
Best forecast wave conditions in Maui	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Ma'alaea	Puamana	Shark Pit	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour		Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Lahaina Breakwall/Harbour	Shark Pit
Rating (10 max)	2	2	2	2	2	2	3	4	1	1	3	4	4	4	4	4		3	3	3	3	3	1
Best forecast wave conditions in United States	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Steamer Lane-Middle Peak CAL - Santa Cruz	Rincon - Rivermouth CAL - Ventura	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Ranches HAW - Oahu	Ranches HAW - Oahu	Ranches HAW - Oahu	Mavericks CAL - San Mateo	Lincoln City Nelscott Reef Oregon North	Ghost Tree CAL - Monterey	Ghost Tree CAL - Monterey	Ghost Tree CAL - Monterey	Ghost Tree CAL - Monterey	Mavericks CAL - San Mateo	Mavericks CAL - San Mateo	Mouse Rock CAL - San Luis Obispo	Lincoln City Nelscott Reef Oregon North	Ghost Tree CAL - Monterey	Ghost Tree CAL - Monterey	Ghost Tree CAL - Monterey	Ghost Tree CAL - Monterey	Ghost Tree CAL - Monterey
Rating (10 max)	4	4	4	4	4	4	4	5	5	5	3	5	4	4	5	5	5	5	5	8	5	5	5	5	5
Header Global	Bay of Skaill United Kingdom	Bay of Skaill United Kingdom	Cow Bombie Australia	Cow Bombie Australia	Barrancon Chile	Lebu Chile	Boners United States	Niyodo Rivermouth Japan	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Benkunqut Indonesia	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Boners United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States	Lincoln City Nelscott Reef United States
Rating (10 max)	4	4	5	5	4	5	4	5	5	5	4	5	8	8	7	6	6	6	5	8	9	8	7	7	6

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

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Grandma's 48 hour detailed Surf Forecast

How big are the waves at Grandma's today (04 Nov):

Short Range Forecast

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