Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 am 30 Oct 2026 (local time)

Forecast update in hr min

Today's Katahama sea temperature is

23.7°C

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

Surf Forecasts:

How big are the waves at Katahama today (30 Oct):

Morning surf: Morning surf (30 Oct, local time) - 5ft (1.5m), 8s period with ESE swell.
Afternoon surf: Afternoon surf (30 Oct, local time) - 5.5ft (1.7m), 9s period with SE swell.
Evening surf: Evening surf (30 Oct, local time) - 5ft (1.6m), 9s period with SE swell.

The current surf forecast for Katahama at 4PM is: 1.7m 9s primary swell from a Southeast direction and 0.4m 12s secondary swell from a Southeast direction (forecast issued at 08:00am October 30). The wind direction is predicted to be cross-offshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (30 Oct)	5ft (1.5m)	8s
Afternoon (30 Oct)	5.5ft (1.7m)	9s
Evening (30 Oct)	5ft (1.6m)	9s

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

	Short Range Forecast Light rain (total 2mm), mostly falling on Fri night. Warm (max 21°C on Fri morning, min 15°C on Sat night). Winds decreasing (strong winds from the WNW on Sat afternoon, calm by Sun morning).
	Friday 30						Saturday 31								Sunday 1
	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM
Rating (10 max)	2	2	2	1	2	2	2	1	1	1	1	1	1	3	4	4	4	4	3	3	3	4
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	ESE 8	ESE 8	ESE 9	SE 9	SE 9	SE 9	SE 8	SE 8	SE 21	SE 10	SE 16	SE 13	SE 19	SSE 18	SE 16	SE 18	SE 18	SE 17	SE 16	SE 15	SE 15	SSE 14
Wave Graph
kJ	202	309	411	439	390	354	313	201	269	278	844	376	1532	572	1144	1802	2267	2187	2146	2130	1835	1389
Wind (km/h)	N	W	W	WSW	NW	W	W	W	W	W	W	WNW	WNW	WNW	NW	WNW	NNW	ENE	SSE	S	SW	W
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross-off	cross-off	off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	off	off	off	off	glassy	cross-on	cross-on	cross	cross-off
High Tide		8:20AM1.50m				7:04PM1.61m					9:22AM1.44m			7:47PM1.49m					10:46AM1.40m			8:45PM1.35m
Low Tide				1:29PM1.06m				2:19AM0.35m				2:31PM1.12m					3:18AM0.46m				4:12PM1.16m


	6:03	—	—	—	—	—	—	—	6:05	—	—	—	—	—	—	—	6:05	—	—	—	—	—
	—	—	—	4:55	—	—	—	—	—	—	—	4:54	—	—	—	—	—	—	—	4:53	—	—
mm	—	—	—	—	—	—	2	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	19	21	21	21	18	18	18	17	17	19	21	21	18	17	16	15	15	17	18	19	18	18
Feels °C	18	18	18	19	17	18	17	15	13	13	13	13	10	11	12	12	13	16	17	18	18	16
Swell 1 Height (m) Direction Period (s)	ESE 8	ESE 8	ESE 9	SE 9	SE 9	SE 9	SE 8	SE 8	SE 9	SE 10	SE 16	SE 13	SE 19	SE 15	SE 16	SE 18	SE 18	SE 17	SE 16	SE 15	SE 15	SSE 14
kJ	202	309	411	439	390	354	313	201	238	269	844	376	1532	444	1144	1802	2267	2187	2146	2130	1835	1389
Swell 2 Height (m) Direction Period (s)	SE 12	SE 13	SE 13	SE 12	SE 15	SE 15	SE 13	SE 13	SE 21	SE 19	SE 20	SE 16	SE 20	SSE 18	ESE 10	W 6	W 5	W 5	E 8	ENE 5	E 9	E 10
kJ	55	42	41	39	33	34	40	109	269	278	322	375	557	572	83	89	43	27	63	17	103	90
Swell 3 Height (m) Direction Period (s)	—	SE 16	SE 16	SE 16	ESE 12	ESE 12	SE 16	SE 10	SE 14	SE 21	SE 20	SE 20	—	ESE 10	ESE 10	SSE 20	W 6	E 9	W 5	—	—	E 5
kJ	—	10	10	11	14	14	39	36	68	117	335	315	—	116	111	441	53	57	21	—	—	15
Wind waves Height (m) Direction Period (s)	—	—	—	—	W 2	W 2	SW 3	WSW 4	W 5	W 5	W 6	W 6	W 6	WNW 6	W 6	—	WNW 6	—	—	—	—	—
kJ	—	—	—	—	1	1	5	18	64	147	238	222	253	240	144	—	124	—	—	—	—	—
Nearest Offshore or Glassy	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Susuki Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Susuki Shizuoka	Sakawa River Kanagawa	Sakawa River Kanagawa	Usami Shizuoka	Usami Shizuoka	Shimoda Yamatoken (Tatado Hama) Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Akabane Long Beach Shizuoka	Akabane Long Beach Shizuoka	Kisami-Ohama Beach Shizuoka	Suruga Bay Shizuoka
Rating (10 max)	1	1	1	2	1	1	1	2	3	3	2	3	4	3	3	3	3	4	4	4	4	3
Distance (km)	2	2	2	6	2	2	2	6	103	103	85	85	66	2	2	2	2	2	94	94	65	2
Best forecast wave conditions in Shizuoka	Shimoda Yamatoken (Tatado Hama)	Susuki	Susuki	Susuki	Susuki	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach			Usami	Usami	Shimoda Yamatoken (Tatado Hama)	Shimoda Yamatoken (Tatado Hama)	Usami	Shimoda Yamatoken (Tatado Hama)	Shimoda Yamatoken (Tatado Hama)	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach	Kisami-Ohama Beach	Susuki
Rating (10 max)	2	2	2	2	2	2	2	2			2	3	4	4	3	4	4	4	4	4	4	4
Best forecast wave conditions in Japan	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Tsurigasaki Surfing Beach (Tokyo 2020) Chiba	Katagai Chiba	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Amatu Chiba	Nunoshima Shikoku	Mera Chiba	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku
Rating (10 max)	4	4	3	3	3	3	3	4	4	4	4	4	4	4	4	4	4	5	4	5	4	4
Header Global	Easter Reef Australia	Easter Reef Australia	Bay of Skaill United Kingdom	Lebu Chile	Lebu Chile	Barrancon Chile	Nine Mile New Zealand	Dunedin - Bobs Beach New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Afife Portugal	St Vincent Left New Caledonia	Achadas Da Cruz Portugal	Achadas Da Cruz Portugal	Afife Portugal	Afife Portugal	Achadas Da Cruz Portugal	Afife Portugal	Ahijedero Mexico	Ahijedero Mexico
Rating (10 max)	5	5	4	5	5	4	5	8	6	5	5	5	4	5	4	4	4	4	4	4	4	4

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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Katahama 48 hour detailed Surf Forecast

How big are the waves at Katahama today (30 Oct):

Short Range Forecast

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