Keta Reef Oshima Surf Forecast

/ Izu Islands (6 surf breaks) /

Japan (129 surf breaks) / Lat Long: (34.74° N 139.36° E)

Surf Forecasts:

Keta Reef Oshima surfForecast / Izu Islands / Japan

48hr Weather and Surf, issued 2 am Tuesday 04 Nov 2025 JST

Forecast update in hr min s Forecast update imminent

Keta Reef Oshima surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Keta Reef Oshima sea temperature is 21.9° C
(Which is slightly cooler than normal)

How big are the waves at Keta Reef Oshima today?

The current surf forecast for Keta Reef Oshima at 5AM is: 0.4m 9s primary swell from a East-southeast direction and 0.3m 10s secondary swell from a East direction (forecast issued at 02:00am November 04). An open ocean swell of 1.2m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (04 Nov)	1.5ft (0.4m)	9s
Afternoon (04 Nov)	1.5ft (0.4m)	9s
Evening (04 Nov)	1.5ft (0.4m)	9s

Table - waves today at Keta Reef Oshima. (Swell directed towards the surf break)

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Tuesday 04								Wednesday 05								Thursday 06
	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	6 PM	9 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 (?)	ESE	ESE	SE	ESE	ESE	SE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	ESE
Period(s) (?)	10	9	9	9	9	9	9	9	9	9	9	9	10	10	10	10	10	8	8	8	8	8	9	10
Wave Graph (?)
kJ (?)	37	32	22	32	32	21	32	34	34	33	33	32	36	36	36	37	36	181	270	270	234	234	243	326
Wind (km/h)	NE	NE	NE	NE	NE	NE	NE	NE	NNE	NNE	NNE	NNE	NNE	NE	NE	NE	NNE	NNE	NNE	NNE	NNE	NNE	NE	NE
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)			3:38AM 1.45				3:20PM 1.50				4:29AM 1.53				3:47PM 1.55				5:20AM 1.55				4:15PM 1.58
Low Tide / height (m)	9:17PM 0.33				9:30AM 0.61				9:54PM 0.14				10:09AM 0.71				10:33PM -0.01				10:48AM 0.81

	Tuesday 04								Wednesday 05								Thursday 06
Sunrise	-	-	-	6:03	-	-	-	-	-	-	-	6:05	-	-	-	-	-	-	-	6:05	-	-	-	-
Sunset	-	-	-	-	-	4:45	-	-	-	-	-	-	-	4:45	-	-	-	-	-	-	-	4:45	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1	-	-	-	-	-	-
Temp. °C	15	14	14	14	14	15	16	16	16	16	16	15	16	18	18	17	16	15	16	15	16	18	18	16
Feels °C (?)	6	6	7	8	9	12	13	13	13	12	11	9	10	13	13	11	9	7	7	6	7	10	11	10

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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