Katahama 48 hour detailed Surf Forecast

Lat Long: 34.72° N 138.22° E

Issued: 2 am 24 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 (24 Jul):

Morning surf: Morning surf (24 Jul, local time) - 1.5ft (0.4m), 9s period with E swell.
Afternoon surf: Afternoon surf (24 Jul, local time) - 1ft (0.3m), 11s period with SE swell.
Evening surf: Evening surf (24 Jul, local time) - 1.5ft (0.4m), 11s period with SE swell.

The current surf forecast for Katahama at 8AM is: 0.4m 9s primary swell from a East direction (forecast issued at 02:00am July 24). An open ocean swell of 0.5m 5s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (JST) & Date	Wave Height	Wave Period
Morning (24 Jul)	1.5ft (0.4m)	9s
Afternoon (24 Jul)	1ft (0.3m)	11s
Evening (24 Jul)	1.5ft (0.4m)	11s

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

	Short Range Forecast Mostly dry. Warm (max 29°C on Fri morning, min 26°C on Sat night). Wind will be generally light.
	Friday 24								Saturday 25								Sunday 26
	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	0	0	0	0	0	1	1	1	0	0	0	0	1	1	0	0	0	0	0	0	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	E 9	E 9	E 9	SE 10	SE 11	SE 11	SE 11	SE 11	SE 16	SE 16	SE 16	SE 16	SE 16	SE 16	SE 16	SE 15	SE 15	SE 15	SE 15	SE 15	SE 15	SE 14	SE 14	SE 14
Wave Graph
kJ	28	27	27	27	19	18	30	30	41	41	41	41	40	40	39	37	58	57	56	41	54	74	74	73
Wind (km/h)	E	ENE	NE	SE	SSE	SSE	SE	SE	E	ENE	NE	SSE	SSE	SSE	SSE	SSE	NE	ENE	NE	SE	SSE	S	SSW	SW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-on	glassy	glassy	on	on	on	on	on	glassy	glassy	glassy	on	cross-on	cross-on	on	glassy	glassy	cross	cross	on	cross-on	cross-on	cross-on	glassy
High Tide	11:58PM1.48m						3:37PM1.30m			1:13AM1.46m					4:33PM1.40m			2:19AM1.48m					5:08PM1.49m
Low Tide				7:55AM0.56m				7:29PM1.21m					9:03AM0.46m				9:20PM1.21m				9:53AM0.37m


	—	4:50	—	—	—	—	—	—	—	4:50	—	—	—	—	—	—	—	4:52	—	—	—	—	—	—
	—	—	—	—	—	—	6:55	—	—	—	—	—	—	—	6:54	—	—	—	—	—	—	—	6:53	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	28	27	27	29	29	29	28	28	27	27	27	29	29	29	29	28	27	27	26	28	28	28	28	27
Feels °C	33	32	32	33	32	33	32	34	33	33	33	34	32	32	33	33	32	32	30	32	31	31	32	33
Swell 1 Height (m) Direction Period (s)	SW 5	SW 5	SSW 5	SW 5	SW 5	SW 5	SE 11	SE 11	SE 11	SE 11	SE 10	SE 10	SE 10	SE 10	SE 10	SE 10	SE 10	SE 10	SE 11	SE 11	SE 11	SE 11	SSW 9	S 9
kJ	34	19	15	12	9	8	30	30	40	40	36	35	35	35	35	35	35	35	40	41	41	40	28	41
Swell 2 Height (m) Direction Period (s)	E 9	E 9	E 9	E 9	E 9	E 9	SW 5	E 9	E 9	SE 16	SE 16	SE 16	SE 16	SE 16	SE 16	SE 15	SE 15	SE 15	SE 15	SE 15	SE 15	SE 14	SE 11	SE 11
kJ	28	27	27	27	15	15	6	14	14	41	41	41	40	40	39	37	58	57	56	34	54	74	40	40
Swell 3 Height (m) Direction Period (s)	SE 10	SE 10	SE 10	SE 10	SE 11	SE 11	E 9	SW 4	SE 16	E 9	E 9	E 9	E 9	E 9	E 8	E 8	S 8	WSW 4	WSW 4	S 7	E 8	S 8	SE 14	SE 14
kJ	15	15	14	23	19	18	14	3	41	14	14	14	13	13	13	12	10	3	3	9	12	11	74	73
Wind waves Height (m) Direction Period (s)	—	—	—	—	—	ESE 3	E 3	—	—	ENE 5	—	—	—	—	—	—	—	—	—	—	—	SSW 3	SSW 2	—
kJ	—	—	—	—	—	2	2	—	—	2	—	—	—	—	—	—	—	—	—	—	—	1	1	—
Nearest Offshore or Glassy	Omaezaki Shizuoka	Omaezaki Shizuoka	Mera Chiba	Omaezaki Shizuoka	Shida Chiba	Uraga Point Kanagawa	Keta Reef Oshima Izu Islands	Sakawa River Kanagawa	Susuki Shizuoka	Susuki Shizuoka	Susuki Shizuoka	Omaezaki Shizuoka	Akabane Long Beach Shizuoka	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Suruga Bay Shizuoka	Suruga Bay Shizuoka	Omaezaki Shizuoka	Suruga Bay Shizuoka	Omaezaki Shizuoka	Keta Reef Oshima Izu Islands	Keta Reef Oshima Izu Islands	Susuki 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)	13	13	150	13	211	148	104	103	6	6	6	13	94	104	104	2	2	13	2	13	104	104	6	2
Best forecast wave conditions in Shizuoka	Omaezaki	Omaezaki		Omaezaki					Omaezaki	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach	Akabane Long Beach			Susuki	Omaezaki	Omaezaki	Omaezaki	Omaezaki			Susuki	Shimoda Yamatoken (Tatado Hama)
Rating (10 max)	1	1		1					1	1	1	1	1			1	1	1	1	1			1	1
Best forecast wave conditions in Japan	Nunoshima Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Kaiser's (Hachijojima Island) Izu Islands	Kaifu Rivermouth Shikoku	Niyodo Rivermouth Shikoku	Kaiser's (Hachijojima Island) Izu Islands	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	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	2	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Header Global	Benkunqut Indonesia	Point Roadnight Australia	Point Roadnight Australia	Dolphin Point South Africa	Fish Boma South Africa	Boneyards South Africa	Boneyards South Africa	Barbel Point South Africa	Sea Vista South Africa	Cathedral Rock Australia	Boneyards South Africa	Boneyards South Africa	Boneyards South Africa	Nine Mile New Zealand	Fox River New Zealand	Blaketown Wedge New Zealand	Stent Road New Zealand	Papatowai New Zealand	Papatowai New Zealand	Raglan-Indicators New Zealand	Tahai Chile	Tahai Chile	Hanga Poukura Chile	Ahijedero Mexico
Rating (10 max)	4	9	9	9	9	9	9	9	6	8	5	5	5	7	6	5	8	7	6	5	5	5	5	4

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

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 (24 Jul):

Short Range Forecast

Latest Updates

Summer School: The Timeline of The Boardshort

How Our WaveFinder Tool Makes Forecasting Easier Than Ever Before

The Five Best Forecasts For International Surfing Day 2026

Best Surf Travel Deals & Discounts For 2026 To Help Make Surf Travel Cheaper

Let Our Surf Alerts Do All Your Forecast Heavy Lifting

FREE! Surf-Forecast.com widget for your website