Cape Mendocino 48 hour detailed Surf Forecast

Lat Long: 40.42° N 124.40° W

Issued: 4 am 18 Jul 2026 (local time)

Forecast update in hr min

Today's Cape Mendocino sea temperature is

10.3° C

Cape Mendocino 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 Cape Mendocino today (18 Jul):

Morning surf: Morning surf (18 Jul, local time) - 3ft (0.9m), 16s period with WNW swell.
Afternoon surf: Afternoon surf (18 Jul, local time) - 2.5ft (0.8m), 18s period with SW swell.
Evening surf: Evening surf (18 Jul, local time) - 2.5ft (0.8m), 18s period with SW swell.

The current surf forecast for Cape Mendocino at 12PM is: 0.9m 16s primary swell from a West-northwest direction and 0.8m 17s secondary swell from a Southwest direction, 1.5m 7s secondary swell from a Northwest direction (forecast issued at 04:00am July 18). The wind direction is predicted to be cross-onshore.

Time (PDT) & Date	Wave Height	Wave Period
Morning (18 Jul)	3ft (0.9m)	16s
Afternoon (18 Jul)	2.5ft (0.8m)	18s
Evening (18 Jul)	2.5ft (0.8m)	18s

Table - waves today at Cape Mendocino. (Swell directed towards the surf break)

	Short Range Forecast Mostly dry. Very mild (max 16°C on Sat afternoon, min 12°C on Sat night). Wind will be generally light.
	Saturday 18								Sunday 19								Monday 20
	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
Rating (10 max)	1	1	2	0	2	1	2	1	2	1	2	1	0	1	1	2	2	1	1	2	2	2	2	3
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	WNW 16	WNW 16	WNW 16	WNW 16	WNW 16	SW 18	SW 18	NW 8	NW 8	WNW 16	WNW 15	NW 8	SW 16	SW 17	SW 17	SW 17	SW 17	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16
Wave Graph
kJ	463	457	452	452	362	375	388	359	423	344	270	527	314	434	505	434	419	326	314	261	255	362	362	362
Wind (km/h)	N	N	N	NNW	NNW	NNW	N	N	NNW	NNW	N	NNW	NNW	NNW	N	N	NNW	NW	W	W	W	W	NW	WNW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross	cross	cross	cross-on	cross	cross	cross	cross	cross	cross-on	glassy	cross-on	cross-on	cross	cross	cross	cross	cross-on	on	glassy	glassy	on	cross-on	glassy
High Tide		2:11AM1.69m				3:40PM1.69m				3:10AM1.48m				4:20PM1.72m				4:18AM1.27m				5:00PM1.73m
Low Tide				9:05AM-0.04m				9:49PM0.58m				9:47AM0.18m				10:56PM0.49m				10:31AM0.41m


	—	6:01	—	—	—	—	—	—	—	6:03	—	—	—	—	—	—	—	6:03	—	—	—	—	—	—
	—	—	—	—	—	—	8:44	—	—	—	—	—	—	—	8:44	—	—	—	—	—	—	—	8:43	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	12	12	13	15	16	16	14	13	12	12	14	15	16	15	14	13	13	13	14	15	16	14	14	13
Feels °C	9	9	11	12	13	12	10	10	10	11	14	13	14	12	11	11	12	12	13	15	16	14	14	13
Swell 1 Height (m) Direction Period (s)	WNW 16	WNW 16	WNW 16	WNW 16	WNW 16	WNW 16	WNW 16	NW 8	NW 8	NW 8	NW 8	NW 8	NW 8	NW 8	NNW 8	NNW 8	NNW 8	NNW 8	NNW 8	NW 8	NW 8	NNW 8	NW 8	NW 8
kJ	463	457	452	452	362	353	353	359	423	485	485	527	497	509	554	554	525	481	469	428	428	365	330	297
Swell 2 Height (m) Direction Period (s)	NW 12	NW 12	SW 17	SW 17	SW 17	SW 18	SW 18	WNW 16	WNW 16	WNW 16	WNW 15	WNW 15	SW 16	SW 17	SW 17	SW 17	SW 17	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16	SW 16
kJ	69	108	241	358	362	375	388	348	348	344	270	259	314	434	505	434	419	326	314	261	255	362	362	362
Swell 3 Height (m) Direction Period (s)	SW 14	SW 14	NW 11	NW 11	NW 11	WNW 10	SW 13	SW 19	SW 16	SW 14	SW 16	SW 16	WNW 15	WNW 14	WNW 14	WNW 14	WNW 14	WNW 14	WNW 14	WNW 14	WNW 14	S 13	S 13	S 13
kJ	132	132	75	94	90	72	61	278	132	65	201	201	246	239	163	163	163	163	160	160	111	176	222	215
Wind waves Height (m) Direction Period (s)	NNW 6	NNW 6	NW 6	NW 7	NW 7	NW 7	NW 7	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	104	109	123	183	233	258	322	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Nearest Offshore or Glassy	South Jetty Table Bluff CAL - Humboldt	South Jetty Table Bluff CAL - Humboldt	South Jetty Table Bluff CAL - Humboldt	Garths Reef CAL - Del Norte County	Garths Reef CAL - Del Norte County	Third Reef CAL - Humboldt	Third Reef CAL - Humboldt	South Jetty Table Bluff CAL - Humboldt	South Jetty Table Bluff CAL - Humboldt	Centreville Beach CAL - Humboldt	Cape Mendocino CAL - Humboldt	Third Reef CAL - Humboldt	Patricks Point State Park CAL - Humboldt	Third Reef CAL - Humboldt	Third Reef CAL - Humboldt	South Jetty Table Bluff CAL - Humboldt	Third Reef CAL - Humboldt	Samoa Peninsula CAL - Humboldt	Big Lagoon CAL - Humboldt	Cape Mendocino CAL - Humboldt	Cape Mendocino CAL - Humboldt	Third Reef CAL - Humboldt	Centreville Beach CAL - Humboldt	Cape Mendocino CAL - Humboldt
Rating (10 max)	3	3	3	2	2	3	3	4	4	2	2	3	3	3	3	4	3	3	3	2	2	3	3	3
Distance (km)	40	40	40	151	151	51	51	40	40	21	0	51	83	51	51	40	51	45	86	0	0	51	21	0
Best forecast wave conditions in Humboldt County	Gale Point	Gale Point	Gale Point			Gale Point	Gale Point	The Lagoons	Bunkers	Moonstone Beach	Moonstone Beach	No Pass	Patricks Point State Park	Gale Point	Moonstone Beach	Stone Lagoon	Gale Point	Samoa Peninsula	Gold Bluffs Beach	Gale Point	Gale Point	Gale Point	Gale Point	Gale Point
Rating (10 max)	3	3	3			3	3	4	4	3	3	3	3	3	3	4	3	3	3	3	3	3	3	3
Best forecast wave conditions in United States	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Waiaha Rivermouth / Honls HAW - Big Island	Steamer Lane-Middle Peak CAL - Santa Cruz	Gale Point CAL - Humboldt	Steamer Lane-The Point CAL - Santa Cruz	Cape Sebastian Oregon South	Bunkers CAL - Humboldt	Mouse Rock CAL - San Luis Obispo	Mouse Rock CAL - San Luis Obispo	Hobuck/North Coast Washington	Drakes Estero CAL - Marin County	Steamer Lane-Middle Peak CAL - Santa Cruz	El Capitan CAL - Santa Barbara	Cape Sebastian Oregon South	Cape Sebastian Oregon South	Boners CAL - San Luis Obispo	Boners CAL - San Luis Obispo	Cojo CAL - Santa Barbara	Cape Sebastian Oregon South	Cape Sebastian Oregon South	Malibu CAL - LA County	Ghost Tree CAL - Monterey
Rating (10 max)	3	3	3	2	2	3	3	4	4	3	3	3	3	3	3	4	4	3	3	3	3	3	3	3
Header Global	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Dinner Plates New Zealand	White Rock - The Spit New Zealand	Humenga Point New Zealand	Last Chance New Zealand	Diners Beach New Zealand	Diners Beach New Zealand	Angourie Point Australia	Asu Indonesia	Asu Indonesia
Rating (10 max)	8	7	6	6	6	6	6	7	7	7	7	7	7	5	5	5	7	5	5	5	5	4	4	4

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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Cape Mendocino 48 hour detailed Surf Forecast

How big are the waves at Cape Mendocino today (18 Jul):

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