Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 2 am 07 Oct 2026 (local time)

Forecast update in hr min

Today's Katahama sea temperature is

24.6°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 (07 Oct):

Morning surf: Morning surf (07 Oct, local time) - 11ft (3.5m), 15s period with ESE swell.
Afternoon surf: Afternoon surf (07 Oct, local time) - 7ft (2.2m), 13s period with ESE swell.
Evening surf: Evening surf (07 Oct, local time) - 5ft (1.6m), 12s period with ESE swell.

The current surf forecast for Katahama at 10AM is: 3.0m 14s primary swell from a East-southeast direction (forecast issued at 02:00am October 07). An open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (07 Oct)	11ft (3.5m)	15s
Afternoon (07 Oct)	7ft (2.2m)	13s
Evening (07 Oct)	5ft (1.6m)	12s

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

	Short Range Forecast Light rain (total 2mm), mostly falling on Wed morning. Warm (max 22°C on Wed morning, min 18°C on Fri night). Wind will be generally light.
	Wednesday 7								Thursday 8								Friday 9
	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	12 AM	3 AM	6 AM	9 AM	12 PM	3 PM	6 PM	9 PM
Rating (10 max)	!	!	!	0	0	0	1	1	3	1	2	0	0	1	1	1	2	2	3	2	2	2	2	3
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SE 16	SE 16	ESE 16	ESE 15	ESE 14	ESE 13	ESE 13	ESE 12	E 12	ESE 12	ESE 11	ESE 11	ESE 11	ESE 10	ESE 17	ESE 16	ESE 17	ESE 16	ESE 16	ESE 17	ESE 17	ESE 16	ESE 16	ESE 15
Wave Graph
kJ	9782	9040	7105	4648	2679	1674	1156	820	661	486	376	308	249	187	224	283	372	463	437	702	785	653	793	621
Wind (km/h)	SSE	SE	ESE	E	E	E	E	E	NNE	NE	NE	NE	ENE	ESE	E	E	NE	NE	NE	ENE	ESE	SSE	SE	NNE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-on	on	on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-off	cross	cross-off	cross	cross-on	on	cross-on	cross-on	cross	cross	cross-off	cross	cross-on	cross-on	on	glassy
High Tide		2:45AM1.39m					3:45PM1.60m				3:35AM1.49m				4:07PM1.64m				4:14AM1.57m				4:27PM1.68m
Low Tide	9:30PM0.95m				9:11AM0.61m				9:59PM0.81m				9:51AM0.61m				10:24PM0.68m				10:23AM0.63m


	—	5:45	—	—	—	—	—	—	—	5:46	—	—	—	—	—	—	—	5:47	—	—	—	—	—	—
	—	—	—	—	—	5:23	—	—	—	—	—	—	—	5:22	—	—	—	—	—	—	—	5:21	—	—
mm	—	—	1	1	—	—	—	—	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	23	22	21	22	22	22	22	21	20	20	20	20	22	22	22	22	21	20	19	20	21	22	21	21
Feels °C	23	21	21	20	19	19	19	20	18	18	18	17	21	21	22	21	21	19	19	19	21	22	20	22
Swell 1 Height (m) Direction Period (s)	SE 16	SE 16	ESE 16	ESE 15	ESE 14	ESE 13	ESE 13	ESE 12	E 12	ESE 12	ESE 11	ESE 11	ESE 11	ESE 10	ESE 10	ESE 10	ESE 17	ESE 6	ESE 16	ESE 17	ESE 17	ESE 16	ESE 16	ESE 15
kJ	9782	9040	7105	4648	2679	1674	1156	820	661	486	376	308	249	187	143	111	372	68	437	702	785	653	793	621
Swell 2 Height (m) Direction Period (s)	W 6	W 6	W 6	W 5	W 5	W 5	W 5	W 5	E 20	E 20	ESE 19	ESE 18	ESE 18	ESE 18	ESE 17	ESE 16	ESE 10	ESE 16	ESE 6	ESE 9	ESE 9	SE 11	ESE 8	ESE 8
kJ	48	38	38	28	20	13	5	2	30	30	71	63	106	103	224	283	109	463	60	154	151	19	111	111
Swell 3 Height (m) Direction Period (s)	SSE 21	—	—	—	—	—	E 21	E 21	—	W 4	W 4	—	—	—	SE 12	SE 12	SE 12	ESE 9	ESE 9	SE 12	SE 11	SSE 11	SSE 11	SE 11
kJ	44	—	—	—	—	—	9	9	—	2	1	—	—	—	6	6	6	100	73	6	5	12	12	5
Wind waves Height (m) Direction Period (s)	WNW 6	W 6	WNW 6	—	E 4	—	E 5	E 5	E 5	E 5	E 5	E 6	E 6	E 6	ESE 6	ESE 6	ESE 6	ESE 6	—	ESE 6	—	ESE 9	—	—
kJ	104	101	104	—	7	—	42	61	53	77	83	116	112	97	98	100	79	115	—	88	—	144	—	—
Nearest Offshore or Glassy	Usami Shizuoka	Usami Shizuoka	Usami Shizuoka	Usami Shizuoka	Usami Shizuoka	Usami Shizuoka	Usami Shizuoka	Usami Shizuoka	Suruga Bay Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Keta Reef Oshima Izu Islands	Sakawa River Kanagawa	Sakawa River Kanagawa	Suruga Bay Shizuoka	Omaezaki Shizuoka	Suruga Bay Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Usami Shizuoka	Omaezaki Shizuoka	Suruga Bay Shizuoka
Rating (10 max)	6	5	5	4	4	3	2	2	1	3	2	2	2	2	1	1	1	3	1	3	3	2	3	2
Distance (km)	85	85	85	85	85	85	85	85	2	13	13	13	13	104	103	103	2	13	2	13	13	85	13	2
Best forecast wave conditions in Shizuoka	Usami	Usami	Usami	Usami	Usami	Usami	Usami	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach				Omaezaki	Omaezaki	Omaezaki	Omaezaki	Omaezaki	Usami	Omaezaki	Omaezaki
Rating (10 max)	6	5	5	4	4	3	2	3	3	3	2	2	2				2	3	3	3	3	2	3	3
Best forecast wave conditions in Japan	Kaifu Rivermouth Shikoku	Katagai Chiba	Matsube Bay Chiba	Matsube Bay Chiba	Kaiser's (Hachijojima Island) Izu Islands	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Mera Chiba	Mera Chiba	Amatu Chiba	Mera Chiba	Mera Chiba	Keta Reef Oshima Izu Islands	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Kaifu Rivermouth Shikoku	Matsube Bay Chiba	Niyodo Rivermouth Shikoku	Kuminatu Chiba	Mera Chiba	Mera Chiba	Mera Chiba	Kuminatu Chiba
Rating (10 max)	7	9	9	7	5	4	4	4	4	4	4	3	3	2	2	3	4	4	4	4	4	4	4	4
Header Global	Kaifu Rivermouth Japan	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	Boneyards South Africa	Hell South Africa	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	The Hoek South Africa	Heaven South Africa	Batu Hiu Indonesia	Hell South Africa	Boneyards South Africa	Benkunqut Indonesia	Benkunqut Indonesia	Keramas Indonesia	Boneyards South Africa	Boneyards South Africa	Dolphin Point South Africa	Dolphin Point South Africa	Dolphin Point South Africa	Dolphin Point South Africa	Dinner Plates New Zealand
Rating (10 max)	7	9	9	9	5	6	9	9	8	6	6	5	6	5	5	5	5	5	5	8	5	5	5	5

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Latest Updates

Ben Mondy

Six Sun-Soaked Summer Surf Spots: Backed by 20 years of Swell and Wind Stats (and with our 20% Summer Subscription Sale)

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Katahama surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

Katahama 48 hour detailed Surf Forecast

How big are the waves at Katahama today (07 Oct):

Short Range Forecast

Latest Updates

Surf-Forecast Now Has Webcams

Road Testing the new Db Surf Roller Pro

Summer's Short. Life Is Long.

Roadsurfing in the Basque country

Six Sun-Soaked Summer Surf Spots: Backed by 20 years of Swell and Wind Stats (and with our 20% Summer Subscription Sale)

FREE! Surf-Forecast.com widget for your website