Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 pm 10 Sep 2026 (local time)

Forecast update in hr min

Today's Katahama sea temperature is

27.2°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 (10 Sep):

Evening surf: Evening surf (10 Sep, local time) - 3ft (0.9m), 6s period with E swell.

The current surf forecast for Katahama at 11PM is: 0.9m 6s primary swell from a East direction and 0.3m 16s secondary swell from a East-southeast direction (forecast issued at 08:00pm September 10). An open ocean swell of 0.9m 8s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (JST) & Date	Wave Height	Wave Period
Morning (10 Sep)	-	-
Afternoon (10 Sep)	-	-
Evening (10 Sep)	3ft (0.9m)	6s

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

	Short Range Forecast Heavy rain (total 63mm), heaviest during Fri morning. Warm (max 26°C on Sun afternoon, min 20°C on Thu night). Wind will be generally light.
	Thu 10		Friday 11								Saturday 12
	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	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 Period (s)	E 6	E 6	E 6	E 6	E 6	ESE 14	ESE 14	ESE 14	ESE 14	ESE 14	E 14	E 14	ESE 14	ESE 14	ESE 14	ESE 14	E 14	ESE 13
Wave Graph
kJ	71	55	71	68	74	63	67	68	67	63	94	94	145	149	147	149	134	139
Wind (km/h)	NE	NE	NE	NE	NE	ENE	ENE	NE	ENE	NE	NE	NE	NE	NE	NE	NE	NE	NE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross	cross	cross	cross	cross	cross	cross-on	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross
High Tide	5:12PM1.68m				4:56AM1.67m				5:31PM1.72m				5:30AM1.71m				5:51PM1.76m
Low Tide			11:15PM0.76m				11:19AM0.48m				11:38PM0.64m				11:44AM0.52m


	—	—	—	5:26	—	—	—	—	—	—	—	5:26	—	—	—	—	—	—
	6:01	—	—	—	—	—	—	—	6:00	—	—	—	—	—	—	5:59	—	—
mm	1	4	1	2	6	14	4	4	2	5	7	4	4	2	3	1	—	—
Temp °C	21	20	20	20	20	20	21	22	22	21	21	21	21	21	21	22	23	23
Feels °C	21	20	19	19	20	21	23	24	24	22	23	23	22	22	22	23	24	24
Swell 1 Height (m) Direction Period (s)	S 8	S 8	S 8	S 8	S 8	S 8	E 5	S 8	SSW 7	SSW 7	SSW 7	SSW 7	SSW 7	SSW 7	SSW 7	SSW 7	SSW 7	ESE 13
kJ	130	124	98	93	74	74	40	72	91	97	78	78	76	61	42	42	36	139
Swell 2 Height (m) Direction Period (s)	ESE 15	ESE 15	ESE 16	ESE 14	ESE 14	ESE 14	S 8	ESE 14	ESE 14	ESE 14	E 14	E 14	ESE 14	ESE 14	ESE 14	ESE 14	E 14	SSW 7
kJ	42	47	48	68	64	63	72	68	67	63	94	94	145	149	147	149	134	26
Swell 3 Height (m) Direction Period (s)	ESE 11	SE 9	SE 11	SE 9	ESE 10	ESE 10	ESE 14	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	—	—	SW 7	SE 9	SE 9	S 9
kJ	11	14	18	14	10	10	67	19	19	19	18	19	—	—	7	20	20	2
Wind waves Height (m) Direction Period (s)	E 6	E 6	E 6	E 6	E 6	E 5	—	E 5	E 5	E 4	E 5	E 5	E 4	E 4	E 5	E 5	E 5	E 5
kJ	71	55	71	67	74	62	—	15	14	16	28	27	25	26	37	29	29	28
Nearest Offshore or Glassy	Sakawa River Kanagawa	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Mera Chiba	Mera Chiba	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Mera Chiba	Mera Chiba	Mera Chiba	Mera Chiba	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka
Rating (10 max)	1	2	1	1	1	1	1	2	1	1	1	2	2	2	2	2	1	2
Distance (km)	103	13	13	13	13	13	150	150	13	13	13	150	150	150	150	13	13	13
Best forecast wave conditions in Shizuoka		Omaezaki	Omaezaki	Omaezaki	Omaezaki	Omaezaki			Akabane Long Beach	Akabane Long Beach	Akabane Long Beach					Omaezaki	Omaezaki	Omaezaki
Rating (10 max)		2	1	1	1	1			1	1	1					2	1	2
Best forecast wave conditions in Japan	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Mera Chiba	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Mera Chiba	Nunoshima Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Matsube Bay Chiba	Kuminatu Chiba	Kuminatu Chiba	Amatu Chiba	Amatu Chiba	Amatu Chiba
Rating (10 max)	2	2	2	2	2	2	2	2	2	1	2	2	2	2	2	2	2	2
Header Global	Papatowai New Zealand	Dunedin - Bobs Beach New Zealand	Trial Harbour Australia	Fox River New Zealand	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	Little Wanganui New Zealand	Little Wanganui New Zealand	Tessellated Pavements Australia	Easter Reef Australia	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	Trial Harbour Australia	Otago Peninsula - Papanui Beach New Zealand	Trial Harbour Australia
Rating (10 max)	9	5	9	9	9	9	9	9	7	6	9	9	9	9	9	8	8	7

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 (10 Sep):

Short Range Forecast

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