Number Fours Surf Forecast

/ HAW – Oahu (122 breaks) / Hawaii (267 breaks) /

USA (1297 breaks)

Surf Forecasts:

Number Fours surfForecast / HAW – Oahu / USA

48hr Weather and Surf, issued 7 pm Sunday 14 Sep 2025 HST

Forecast update in hr min s Forecast update imminent

Number Fours surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Number Fours sea temperature is 27.2° C
(Which is normal for this time of year)

How big are the waves at Number Fours today?

The current surf forecast for Number Fours at 9PM is: 0.5m 14s primary swell from a South-southwest direction and 0.5m 11s secondary swell from a South direction, 1.1m 6s secondary swell from a East direction (forecast issued at 07:00pm September 14). An open ocean swell of 0.5m 10s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & Date	Wave Height	Wave Period
Morning (14 Sep)	-	-
Afternoon (14 Sep)	4ft (1.2m)	6s
Evening (14 Sep)	1.5ft (0.5m)	14s

Table - waves today at Number Fours. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Sunday 14			Monday 15								Tuesday 16								Wednesday 17
	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	11 AM	2 PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	ENE	SSW	SSW	SSW	SSW	SSW	SSW	SSW	ENE	SSW	SSW	SSW	SSW	SSW	SSW	SW	SW	SW	SW	E	E	E	E	E
Period(s) (?)	6	14	14	14	13	13	13	13	8	13	13	13	12	12	12	17	17	16	16	6	6	6	6	6
Wave Graph (?)
kJ (?)	118	118	116	76	102	69	68	68	163	68	99	95	89	59	58	76	72	69	67	151	176	196	173	156
Wind (km/h)	NE	ENE	ENE	ENE	NE	ENE	ENE	ENE	ENE	NE	NE	NE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off
High Tide / height (m)				11:02PM 0.19				11:53AM 0.69				12:34AM 0.23				12:49PM 0.69				1:27AM 0.28				1:35PM 0.69
Low Tide / height (m)		7:17PM 0.15			3:33AM 0.12					7:52PM 0.12				5:05AM 0.12					8:20PM 0.09			6:20AM 0.12

	Sunday 14			Monday 15								Tuesday 16								Wednesday 17
Sunrise	-	-	-	-	-	6:18	-	-	-	-	-	-	-	6:18	-	-	-	-	-	-	-	6:18	-	-
Sunset	6:35	-	-	-	-	-	-	-	6:34	-	-	-	-	-	-	-	6:32	-	-	-	-	-	-	-

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

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 HAW - Oahu

Wind Update Continuing clean conditions at Number Fours (calm at Saint Louis Heights wx 3 km from Number Fours). 1.0m 5s windswell from the ENE with a 0.6m 10s swell from the SSE and a 0.3m 14s groundswell from the SSW. 3 swells combining to make bigger set waves.
1 hour 21 minutes ago Number Fours

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1 h 21 min ago

2 km/h

Clean

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