40th Street Surf Forecast

/ CAL – Orange County (51 breaks) / California (404 breaks) /

USA (1297 breaks) / Lat Long: (33.62° N 117.94° W)

Surf Forecasts:

40th Street surfForecast / CAL – Orange County / USA

48hr Weather and Surf, issued 10 pm Wednesday 17 Sep 2025 PDT

Forecast update in hr min s Forecast update imminent

40th Street surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's 40th Street sea temperature is 20.6° C
(Which is 1.4°C warmer than normal for this time of year)

How big are the waves at 40th Street today?

The current surf forecast for 40th Street at 1AM is: 0.8m 15s primary swell from a South direction and 0.4m 15s secondary swell from a Southwest direction, 0.7m 4s secondary swell from a West direction (forecast issued at 10:00pm September 17). The wind direction is predicted to be cross-offshore.

Time (PDT) & Date	Wave Height	Wave Period
Morning (18 Sep)	2.5ft (0.7m)	14s
Afternoon (18 Sep)	2.5ft (0.8m)	14s
Evening (18 Sep)	2.5ft (0.7m)	14s

Table - waves today at 40th Street. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Wed 17		Thursday 18								Friday 19								Saturday 20
	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	11 AM	2 PM	5 PM
Rating (10 max)	0	1	0	1	0	1	0	0	0	0	1	1	1	0	0	0	0	0	1	1	1	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	S	S	S	S	S	S	SSW	SSW	S	S	S	S	S	S	S	SSW	SSW	S	S	S	SSW	SSW	SSW	S
Period(s) (?)	15	15	15	15	14	14	14	14	14	14	14	14	14	13	13	13	13	14	13	13	13	13	13	13
Wave Graph (?)
kJ (?)	287	294	283	209	203	203	276	276	206	144	136	136	132	130	128	184	184	131	121	78	131	129	127	117
Wind (km/h)	NW	NE	N	NNW	NW	SSW	WSW	W	W	WSW	SW	SW	SSW	SW	WSW	WSW	WSW	WSW	SW	WSW	WNW	WSW	WSW	WSW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	off	cross- off	cross- off	cross	glass	on	cross- on	cross- on	cross- on	glass	glass	glass	on	on	on	cross- on	on	glass	glass	glass	cross- on	on	cross- on
High Tide / height (m)	6:57PM 1.72					8:29AM 1.39			7:45PM 1.75					8:54AM 1.46				8:26PM 1.73				9:16AM 1.52
Low Tide / height (m)				2:08AM -0.12			1:56PM 0.55					2:40AM -0.09				2:35PM 0.42				3:08AM -0.03				3:11PM 0.32

	Wed 17		Thursday 18								Friday 19								Saturday 20
Sunrise	-	-	-	-	6:35	-	-	-	-	-	-	-	6:37	-	-	-	-	-	-	-	6:37	-	-	-
Sunset	-	-	-	-	-	-	-	6:53	-	-	-	-	-	-	-	6:52	-	-	-	-	-	-	-	6:51

Rain (mm)	1	-	1	2	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
Temp. °C	20	21	22	22	23	24	23	22	22	21	21	21	21	22	23	22	21	21	20	20	20	22	22	21
Feels °C (?)	21	22	21	22	25	26	24	22	23	22	23	23	23	23	23	22	22	23	22	22	22	23	22	21

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

Recent Eyeball Surf Reports for CAL - Orange County

Wind Update Continuing clean conditions at 40th Street (calm at Costa Mesa Airport 9 km from 40th Street). 0.6m 15s groundswell from the S with a 0.5m 5s windswell from the WNW and a 0.4m 5s windswell from the W as well as a 0.3m 9s swell from the S. 4 swells combining to make bigger set waves.
2 hours 9 minutes ago 40th Street

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2 h 9 min ago

0 km/h

Clean

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