Chinamans Hat/Mokolii Surf Forecast

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

USA (1297 breaks) / Lat Long: (21.51° N 157.83° W)

Surf Forecasts:

Chinamans Hat/Mokolii surfForecast / HAW – Oahu / USA

48hr Weather and Surf, issued 1 pm Wednesday 17 Sep 2025 HST

Forecast update in hr min s Forecast update imminent

Chinamans Hat/Mokolii surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Chinamans Hat/Mokolii sea temperature is 26.6° C
(Which is normal for this time of year)

How big are the waves at Chinamans Hat/Mokolii today?

The current surf forecast for Chinamans Hat/Mokolii at 6PM is: 1.4m 6s primary swell from a East direction and 0.4m 9s secondary swell from a North-northwest direction, 0.1m 9s secondary swell from a Southeast direction (forecast issued at 01:00pm September 17). The wind direction is predicted to be cross-onshore.

Time (HST) & Date	Wave Height	Wave Period
Morning (17 Sep)	4.5ft (1.4m)	6s
Afternoon (17 Sep)	4.5ft (1.4m)	6s
Evening (17 Sep)	5ft (1.5m)	6s

Table - waves today at Chinamans Hat/Mokolii. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Wednesday 17					Thursday 18								Friday 19								Saturday 20
	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)	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 (?)	E	E	E	E	E	E	E	E	E	E	E	E	E	ENE	ENE	ENE	ENE	ENE	ENE	ENE	NE	NE	ENE	NE
Period(s) (?)	6	6	6	6	6	6	6	7	6	6	6	6	6	6	6	6	6	6	6	6	7	7	7	7
Wave Graph (?)
kJ (?)	137	141	146	162	188	194	232	220	206	158	141	171	165	126	104	94	108	115	107	101	194	209	111	273
Wind (km/h)	E	E	ENE	E	E	E	E	E	E	E	ENE	ENE	E	ENE	ENE	E	ENE	ENE	ENE	NE	ENE	NE	ENE	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- on	cross- on	cross- on	cross	cross	cross- on	cross	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on
High Tide / height (m)		12:31PM 0.85				11:57PM 0.45				12:57PM 0.84				12:36AM 0.52				1:18PM 0.81				1:13AM 0.58
Low Tide / height (m)				7:42PM 0.25				6:02AM 0.05				7:46PM 0.22				6:43AM 0.05				7:55PM 0.19				7:20AM 0.09

	Wednesday 17					Thursday 18								Friday 19								Saturday 20
Sunrise	-	-	-	-	-	-	-	6:18	-	-	-	-	-	-	-	6:18	-	-	-	-	-	-	-	6:18
Sunset	-	-	6:31	-	-	-	-	-	-	-	6:30	-	-	-	-	-	-	-	6:30	-	-	-	-	-

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

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 Offshore wind has become cross-off at Waikiki (light winds from the ENE at BUOY-OOUH1 5 km from Waikiki). 0.6m 9s swell from the SSE with a 0.3m 12s groundswell from the SSW and a 0.2m 13s groundswell from the WSW. 3 swells combining to make bigger set waves.
1 hour 9 minutes ago Waikiki

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1 h 27 min ago

9 km/h

Clean

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