Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 8 am 23 Oct 2026 (local time)

Forecast update in hr min

Today's Katahama sea temperature is

24.2°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 (23 Oct):

Morning surf: Morning surf (23 Oct, local time) - 6.5ft (2.0m), 7s period with E swell.
Afternoon surf: Afternoon surf (23 Oct, local time) - 6ft (1.8m), 7s period with E swell.
Evening surf: Evening surf (23 Oct, local time) - 5.5ft (1.7m), 8s period with ESE swell.

The current surf forecast for Katahama at 2PM is: 1.8m 7s primary swell from a East direction (forecast issued at 08:00am October 23). An open ocean swell of 1.5m 13s is not directed at the surf break, a second open ocean swell of 0.9m 15s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (JST) & Date	Wave Height	Wave Period
Morning (23 Oct)	6.5ft (2.0m)	7s
Afternoon (23 Oct)	6ft (1.8m)	7s
Evening (23 Oct)	5.5ft (1.7m)	8s

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

	Short Range Forecast Light rain (total 8mm), mostly falling on Sat morning. Warm (max 22°C on Sat night, min 17°C on Fri morning). Wind will be generally light.
	Friday 23						Saturday 24								Sunday 25
	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	0	0	0	0	0	0	0	0	0	1	2	2	1	1	2	1	0	1	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	E 8	E 7	E 7	E 7	ESE 7	ESE 8	ESE 8	ESE 8	ESE 9	ESE 8	SE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	SSW 6	ESE 8	ESE 8	ESE 9	ESE 10
Wave Graph
kJ	453	419	348	320	303	422	370	321	429	414	450	423	365	314	230	149	126	172	76	82	88	80
Wind (km/h)	NE	NE	NE	ENE	ENE	ENE	NE	NE	ENE	ENE	NE	NE	NE	E	ESE	SW	W	WNW	W	W	W	NNW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross	cross	cross	cross-on	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross-on	glassy	glassy	glassy	cross-off	cross-off	cross-off	cross-off	glassy
High Tide	3:50AM1.49m				3:53PM1.64m				4:28AM1.55m				4:14PM1.67m				5:02AM1.60m				4:36PM1.71m
Low Tide			9:49AM0.70m				10:22PM0.54m				10:20AM0.74m				10:47PM0.42m				10:47AM0.78m


	5:58	—	—	—	—	—	—	5:58	—	—	—	—	—	—	—	—	6:00	—	—	—	—	—
	—	—	—	5:02	—	—	—	—	—	—	—	5:01	—	—	—	—	—	—	—	5:00	—	—
mm	—	—	—	—	—	—	—	—	—	1	3	—	—	—	—	—	—	1	2	1	—	—
Temp °C	18	17	18	19	19	19	19	19	19	19	19	20	21	20	20	21	22	22	22	22	21	21
Feels °C	14	12	14	17	17	17	17	16	17	17	18	20	22	22	22	25	25	24	25	22	22	23
Swell 1 Height (m) Direction Period (s)	S 13	S 13	S 13	S 13	SSW 14	SSW 14	SSW 13	SSW 14	SSW 14	SSW 14	SE 8	SSW 14	SSW 14	SSW 15	SSW 15	SSW 14	SSW 14	SSW 14	SW 13	SSW 7	SW 13	SW 7
kJ	1155	1016	1016	643	1382	1155	989	1004	1043	1122	450	1624	1376	1927	2034	1748	1700	1143	867	229	613	194
Swell 2 Height (m) Direction Period (s)	SSW 15	SSW 17	SSW 16	SSW 15	—	—	—	—	SW 15	—	SSW 14	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	ESE 8	SSW 6	SSW 6	SW 13	ESE 9	SW 12
kJ	525	290	276	574	—	—	—	—	447	—	1435	423	365	285	230	149	126	86	177	757	88	494
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	SW 19	SW 18	SW 17	SW 16	—	—	ESE 8	ESE 8	ESE 8	—	ESE 10
kJ	—	—	—	—	—	—	—	—	—	—	—	361	401	582	755	—	—	94	76	82	—	80
Wind waves Height (m) Direction Period (s)	E 8	E 7	E 7	E 7	ESE 7	ESE 8	ESE 8	ESE 8	ESE 9	ESE 8	—	—	—	ESE 8	—	—	—	SSW 6	—	—	SSW 7	WNW 4
kJ	453	419	348	320	303	422	370	321	429	414	—	—	—	314	—	—	—	172	—	—	266	29
Nearest Offshore or Glassy	Kugenuma Rivermouth Kanagawa	Sagami River Kanagawa	Usami Shizuoka	Usami Shizuoka	Usami Shizuoka	Usami Shizuoka	Omaezaki Shizuoka	Sakawa River Kanagawa	Usami Shizuoka	Usami Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Sakawa River Kanagawa	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Susuki Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka
Rating (10 max)	2	3	1	1	1	1	4	2	2	1	4	4	4	2	4	3	3	3	3	1	3	2
Distance (km)	132	124	85	85	85	85	13	103	85	85	13	13	13	103	2	2	2	2	2	6	2	2
Best forecast wave conditions in Shizuoka			Usami	Usami	Usami	Usami	Omaezaki		Usami	Usami	Omaezaki	Omaezaki	Omaezaki		Omaezaki	Omaezaki	Suruga Bay	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach	Suruga Bay	Akabane Long Beach
Rating (10 max)			1	1	1	1	4		2	1	4	4	4		5	4	3	3	4	3	3	2
Best forecast wave conditions in Japan	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Chikura Chiba	Omaezaki Shizuoka	Omaezaki Shizuoka	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Akabane Long Beach Shizuoka	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku
Rating (10 max)	4	4	4	4	4	4	4	4	4	4	4	5	4	4	5	4	5	4	4	3	3	3
Header Global	Benkunqut Indonesia	Krui Indonesia	Benkunqut Indonesia	Bawa Indonesia	Cavalos de Fao Portugal	Benkunqut Indonesia	Bali Village Indonesia	Bali Village Indonesia	Benkunqut Indonesia	Benkunqut Indonesia	Deba Spain	Deba Spain	Trial Harbour Australia	Purakaunui Bay New Zealand	Purakaunui Bay New Zealand	Outside Corner Indonesia	Niyodo Rivermouth Japan	Afife Portugal	El Huerto Spain	El Huerto Spain	Deba Spain	Rio Nexpa Mexico
Rating (10 max)	6	6	5	5	6	5	5	5	5	5	6	5	5	6	5	5	5	4	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)

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Katahama 48 hour detailed Surf Forecast

How big are the waves at Katahama today (23 Oct):

Short Range Forecast

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