Santos (Hachijojima Island) Surf Forecast

/ Izu Islands (6 surf breaks) /

Japan (129 surf breaks)

Surf Forecasts:

Santos (Hachijojima Island) surfForecast / Izu Islands / Japan

48hr Weather and Surf, issued 8 pm Thursday 18 Sep 2025 JST

Forecast update in hr min s Forecast update imminent

Santos (Hachijojima Island) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Santos (Hachijojima Island) sea temperature is 29.6° C
(Which is 2.5°C warmer than normal for this time of year)

How big are the waves at Santos (Hachijojima Island) today?

The current surf forecast for Santos (Hachijojima Island) at 2AM is: 0.4m 10s primary swell from a Southeast direction and 0.3m 9s secondary swell from a East direction (forecast issued at 08:00pm September 18). An open ocean swell of 1.2m 6s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (19 Sep)	4.5ft (1.3m)	6s
Afternoon (19 Sep)	8ft (2.5m)	8s
Evening (19 Sep)	8ft (2.4m)	7s

Table - waves today at Santos (Hachijojima Island). (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Thu 18		Friday 19								Saturday 20								Sunday 21
	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	0 AM	3 AM	6 AM	9 AM	12 PM	3 PM
Rating (10 max)	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	2
Swell Height Map See all maps
Wave Height (m) & direction (?)	SE	SE	SE	SE	ESE	NNE	NE	NE	NE	ENE	ENE	ENE	ENE	ENE	ENE	ENE	NE	NNE	NE	NE	ENE	NE	NE	NE
Period(s) (?)	10	10	10	10	9	6	7	8	8	7	7	7	7	7	7	7	14	14	14	14	9	13	13	13
Wave Graph (?)
kJ (?)	35	35	34	33	46	140	612	776	721	603	503	394	293	244	171	137	89	133	162	158	183	178	172	167
Wind (km/h)	WSW	WSW	W	WNW	N	NE	NE	ENE	ENE	ENE	ENE	E	ENE	E	SE	S	SSW	SW	SW	WSW	WSW	W	W	WNW
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	cross- off	cross- off	off	cross- off	cross	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	cross- on	on	cross- on	cross	cross- off	cross- off	cross- off	cross- off	cross- off	cross- off	off	off
High Tide / height (m)	4:35PM 1.39			2:51AM 1.47					4:50PM 1.47				3:45AM 1.58				5:08PM 1.56				4:29AM 1.65
Low Tide / height (m)			9:28PM 1.07				9:52AM 0.35				10:05PM 0.95				10:29AM 0.39				10:39PM 0.86				11:00AM 0.48

	Thu 18		Friday 19								Saturday 20								Sunday 21
Sunrise	-	-	-	-	5:26	-	-	-	-	-	-	-	5:26	-	-	-	-	-	-	-	5:26	-	-	-
Sunset	-	-	-	-	-	-	-	5:42	-	-	-	-	-	-	-	5:40	-	-	-	-	-	-	-	5:39

Rain (mm)	-	-	1	1	-	-	1	-	-	-	-	-	-	-	1	2	1	-	-	-	-	-	-	-
Temp. °C	29	28	28	28	27	27	26	25	25	26	26	26	26	27	27	27	28	28	28	28	28	28	27	27
Feels °C (?)	30	29	28	29	28	26	21	20	21	24	25	24	24	27	27	28	29	28	27	27	27	28	27	27

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 Izu Islands

Wind Update The wind is still offshore at Santos (Hachijojima Island) (light winds from the W at Hachijojima 8 km from Santos (Hachijojima Island)). 0.4m 8s swell from the ESE with a 0.2m 11s groundswell, also from the ESE and a 0.2m 9s swell, also from the NE. 3 swells combining to make bigger set waves.
57 minutes ago Santos (Hachijojima Island)

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Actual: 57 min ago

11 km/h

Offshore

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