Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 2 am 27 Jul 2026 (local time)

Forecast update in hr min

Today's Katahama sea temperature is

27.4° 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 (27 Jul):

Morning surf: Morning surf (27 Jul, local time) - 1.5ft (0.4m), 10s period with SE swell.
Afternoon surf: Afternoon surf (27 Jul, local time) - 1.5ft (0.4m), 10s period with SE swell.
Evening surf: Evening surf (27 Jul, local time) - 2.5ft (0.7m), 6s period with E swell.

The current surf forecast for Katahama at 10AM is: 0.4m 10s primary swell from a Southeast direction and 0.4m 8s secondary swell from a East direction (forecast issued at 02:00am July 27). An open ocean swell of 0.5m 8s is not directed at the surf break, a second open ocean swell of 0.4m 4s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (27 Jul)	1.5ft (0.4m)	10s
Afternoon (27 Jul)	1.5ft (0.4m)	10s
Evening (27 Jul)	2.5ft (0.7m)	6s

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

	Short Range Forecast Moderate rain (total 12mm), heaviest on Mon afternoon. Warm (max 32°C on Wed afternoon, min 24°C on Mon afternoon). Wind will be generally light.
	Monday 27								Tuesday 28								Wednesday 29
	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)	1	1	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0	1	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SE 14	SE 14	SE 10	SE 10	SE 10	SE 10	SE 10	E 6	SE 10	SE 10	SE 10	SE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	SE 10	ESE 10	ESE 10	ESE 10	SE 9
Wave Graph
kJ	73	72	38	38	38	37	37	36	48	48	48	48	38	38	38	55	38	38	38	27	37	37	35	23
Wind (km/h)	WNW	N	NE	ESE	SE	SE	SE	ESE	E	ESE	ENE	ESE	SSE	SSW	SW	WSW	W	W	WNW	NW	SSW	W	NW	N
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	off	cross-off	cross	on	on	on	on	on	cross-on	cross-on	glassy	on	on	cross	cross	cross-off	cross-off	cross-off	cross-off	off	cross	cross-off	off	cross-off
High Tide			3:12AM1.52m				5:34PM1.54m				3:57AM1.57m				5:56PM1.59m				4:38AM1.62m					6:17PM1.63m
Low Tide	10:20PM1.18m				10:33AM0.31m				10:57PM1.12m				11:06AM0.27m				11:27PM1.04m				11:37AM0.25m


	—	4:52	—	—	—	—	—	—	—	4:52	—	—	—	—	—	—	—	4:54	—	—	—	—	—	—
	—	—	—	—	—	—	6:53	—	—	—	—	—	—	—	6:52	—	—	—	—	—	—	—	6:52	—
mm	—	—	—	—	—	3	4	2	1	—	—	—	—	—	1	1	—	—	—	—	—	—	—	—
Temp °C	27	27	26	27	27	26	24	25	24	25	25	26	27	28	27	27	27	26	26	28	30	32	32	29
Feels °C	31	31	30	30	29	27	26	28	27	29	29	29	29	30	29	29	26	25	27	31	33	34	34	32
Swell 1 Height (m) Direction Period (s)	S 9	S 8	WSW 4	S 8	S 8	S 8	S 8	SSW 8	SSW 9	SSW 9	SSW 9	SSW 9	SSW 9	SSW 9	SSW 9	SSW 8	SSW 8	SSW 8	SSW 5	SE 10	ESE 10	ESE 10	ESE 10	SW 6
kJ	39	37	11	35	34	34	34	39	61	62	62	61	58	59	65	57	40	39	36	23	37	37	35	136
Swell 2 Height (m) Direction Period (s)	SE 14	SE 10	S 8	SW 4	SW 5	SE 10	SE 10	SE 10	SE 10	SE 10	SE 10	SE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	SSW 8	SSW 8	SSW 8	SE 12	SE 12	SE 9
kJ	73	37	36	5	11	37	37	36	48	48	48	48	38	38	38	55	38	38	26	22	14	6	6	23
Swell 3 Height (m) Direction Period (s)	SE 11	SE 14	SE 10	SE 10	SE 10	SW 5	SW 5	SSW 4	SE 14	SE 14	SE 13	SE 13	SE 13	ESE 4	ESE 4	SE 13	SE 13	SSE 13	ESE 10	SE 13	SE 13	E 13	E 13	SSW 8
kJ	40	72	38	38	38	6	6	2	29	29	28	28	27	5	3	27	27	17	38	27	26	3	3	7
Wind waves Height (m) Direction Period (s)	WSW 4	WSW 4	WSW 4	E 8	E 4	ESE 4	ESE 4	E 6	E 4	E 4	E 4	E 4	E 4	—	—	WSW 3	SW 4	WSW 4	W 4	WSW 6	WSW 6	SW 6	SW 6	WSW 7
kJ	24	21	12	18	13	17	13	31	9	10	11	10	8	—	—	7	13	18	14	120	164	209	187	186
Nearest Offshore or Glassy	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Omaezaki Shizuoka	Mera Chiba	Akabane Long Beach Shizuoka	Sakawa River Kanagawa	Keta Reef Oshima Izu Islands	Omaezaki Shizuoka	Sakawa River Kanagawa	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Omaezaki Shizuoka	Niijima - Awaii Izu Islands	Susuki Shizuoka	Ohara Chiba	Susuki Shizuoka	Akabane Long Beach Shizuoka	Sakawa River Kanagawa	Kisami-Ohama Beach Shizuoka	Suruga Bay Shizuoka	Susuki Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Suruga Bay Shizuoka
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	2	2	13	150	94	103	104	13	103	2	2	13	104	6	208	6	94	103	65	2	6	2	2	2
Best forecast wave conditions in Shizuoka	Susuki	Susuki	Akabane Long Beach		Akabane Long Beach			Omaezaki		Omaezaki	Omaezaki	Omaezaki		Susuki		Akabane Long Beach	Akabane Long Beach		Kisami-Ohama Beach	Susuki	Susuki	Susuki	Susuki	Suruga Bay
Rating (10 max)	1	1	1		1			1		1	1	1		1		1	1		1	1	1	1	1	1
Best forecast wave conditions in Japan	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Niyodo Rivermouth Shikoku	Matsube Bay Chiba	Niyodo Rivermouth Shikoku	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Kaifu Rivermouth Shikoku	Kaiser's (Hachijojima Island) Izu Islands	Takegashima Shikoku	Takegashima Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Chikura Chiba	Niijima - Awaii Izu Islands	Niijima - Habushiura Izu Islands	Niijima - Habushiura Izu Islands	Niyodo Rivermouth Shikoku	Niijima - Habushiura Izu Islands
Rating (10 max)	1	1	1	1	2	2	2	2	1	2	2	1	2	1	1	1	1	1	2	2	2	2	1	2
Header Global	Ahijedero Mexico	Anawhata Road (Oaonui) New Zealand	Saint Leu Reunion	Etang-Sale Reunion	Saint Leu Reunion	Chameau Mauritius	Dolphin Point South Africa	Brak River South Africa	Chameau Mauritius	Chameau Mauritius	Cobblestones Australia	Cobblestones Australia	Cape St Martin South Africa	Cobblestones Australia	Costa Azul Mexico	Punta Palmilla Mexico	Chameau Mauritius	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Gas Bay Australia	Costa Azul Mexico	Point Roadnight Australia	Point Roadnight Australia
Rating (10 max)	4	4	5	5	6	5	5	5	5	5	5	5	5	5	5	6	5	5	5	5	5	5	8	6

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 (27 Jul):

Short Range Forecast

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