Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 2 pm 23 Jul 2026 (local time)

Forecast update in hr min

Today's Katahama sea temperature is

26.9° 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 Jul):

Afternoon surf: Afternoon surf (23 Jul, local time) - 1.5ft (0.4m), 10s period with E swell.
Evening surf: Evening surf (23 Jul, local time) - 1.5ft (0.4m), 10s period with E swell.

The current surf forecast for Katahama at 7PM is: 0.8m 5s primary swell from a Southwest direction and 0.4m 10s secondary swell from a East direction, 0.3m 10s secondary swell from a Southeast direction (forecast issued at 02:00pm July 23). The wind direction is predicted to be cross-shore.

Time (JST) & Date	Wave Height	Wave Period
Morning (23 Jul)	-	-
Afternoon (23 Jul)	1.5ft (0.4m)	10s
Evening (23 Jul)	1.5ft (0.4m)	10s

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

	Short Range Forecast Some drizzle, heaviest during Sat night. Warm (max 31°C on Thu afternoon, min 26°C on Sat night). Wind will be generally light.
	Thu 23				Friday 24								Saturday 25
	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	1	1	0	0	0	0	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	E 10	E 10	E 10	E 10	E 9	E 9	E 9	E 9	SE 11	SE 11	SE 11	SE 11	SE 11	SE 16	SE 16	SE 16	SE 16	SE 16	SE 16	SE 15
Wave Graph
kJ	31	30	31	29	28	27	27	27	19	18	30	30	40	41	41	41	40	40	39	60
Wind (km/h)	SSE	S	SSW	SE	ENE	ENE	NE	ESE	SE	SSE	SE	SSE	SW	NNW	NE	SE	SSE	SE	SE	ESE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-on	cross-on	cross	glassy	cross-on	cross-on	cross	cross-on	on	on	on	glassy	glassy	glassy	glassy	on	on	on	on	on
High Tide		1:49PM1.20m			11:58PM1.48m						3:37PM1.30m			1:13AM1.46m					4:33PM1.40m
Low Tide			5:31PM1.11m					7:55AM0.56m				7:29PM1.21m					9:03AM0.46m


	—	—	—	—	—	4:50	—	—	—	—	—	—	—	4:50	—	—	—	—	—	—
	—	—	6:55	—	—	—	—	—	—	—	6:55	—	—	—	—	—	—	—	6:54	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	31	31	30	28	27	27	27	29	29	29	28	27	27	27	27	28	29	29	28	28
Feels °C	34	34	34	34	32	32	31	33	31	33	33	32	33	33	33	32	33	32	32	33
Swell 1 Height (m) Direction Period (s)	SW 5	E 10	E 10	SW 5	SW 5	SW 5	SW 5	SW 5	SW 5	SW 5	SW 5	SE 11	SE 11	SE 11	SE 10	SE 10	SE 10	SE 10	SE 10	SE 10
kJ	32	30	30	58	52	31	21	18	17	9	8	30	40	40	36	35	35	35	35	35
Swell 2 Height (m) Direction Period (s)	E 10	SSE 10	SE 10	E 10	E 9	E 9	E 9	E 9	E 9	E 9	SE 11	SW 5	SW 5	E 9	E 9	SE 16	SE 16	SE 16	SE 16	SE 15
kJ	31	10	16	29	28	27	27	27	15	15	30	6	3	14	14	41	40	40	39	60
Swell 3 Height (m) Direction Period (s)	SE 10	SE 8	S 8	SE 10	SE 10	SE 10	SE 10	SE 10	SE 11	SE 11	E 4	E 9	E 9	SE 16	SE 16	E 9	E 9	E 9	E 8	E 8
kJ	16	3	5	16	15	15	14	14	19	18	2	14	14	41	41	14	13	13	13	12
Wind waves Height (m) Direction Period (s)	SW 5	SW 5	SW 5	—	—	—	—	—	ESE 3	ESE 3	—	—	—	—	—	—	—	SSW 4	—	—
kJ	38	25	31	—	—	—	—	—	2	4	—	—	—	—	—	—	—	2	—	—
Nearest Offshore or Glassy	Kurihama Kanagawa	Susuki Shizuoka	Susuki Shizuoka	Susuki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Omaezaki Shizuoka	Onjuku Chiba	Kaiser's (Hachijojima Island) Izu Islands	Uraga Point Kanagawa	Ohara Chiba	Susuki Shizuoka	Susuki Shizuoka	Susuki Shizuoka	Susuki Shizuoka	Omaezaki Shizuoka	Kurihama Kanagawa	Uraga Point Kanagawa	Kaiser's (Hachijojima Island) Izu Islands	Omaezaki Shizuoka
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Distance (km)	145	6	6	6	13	13	13	202	236	148	208	6	6	6	6	13	145	148	236	13
Best forecast wave conditions in Shizuoka		Susuki	Susuki	Omaezaki	Omaezaki	Omaezaki	Omaezaki					Susuki	Susuki	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach				Omaezaki
Rating (10 max)		1	1	1	1	1	1					1	1	1	1	1				1
Best forecast wave conditions in Japan	Mera Chiba	Mera Chiba	Mera Chiba	Kuminatu Chiba	Nunoshima Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Kaiser's (Hachijojima Island) Izu Islands	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Kaiser's (Hachijojima Island) Izu Islands	Kaifu Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku
Rating (10 max)	1	1	1	1	1	1	1	1	1	1	2	1	1	1	1	1	1	1	1	1
Header Global	Etang-Sale Reunion	Cobblestones Australia	Point Roadnight Australia	Benkunqut Indonesia	Blackfellows Australia	Point Roadnight Australia	Point Roadnight Australia	Dolphin Point South Africa	Dolphin Point South Africa	Boneyards South Africa	Boneyards South Africa	Bruces Beauties South Africa	Cathedral Rock Australia	Cathedral Rock Australia	Papatowai New Zealand	Nine Mile New Zealand	Boneyards South Africa	Nine Mile New Zealand	Blaketown Wedge New Zealand	Blaketown Wedge New Zealand
Rating (10 max)	4	4	7	4	4	9	9	9	9	9	9	7	9	8	6	9	5	6	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 Jul):

Short Range Forecast

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