Katahama Surf Forecast

/ Shizuoka (8 surf breaks) /

Japan (129 surf breaks)

Surf Forecasts:

Katahama surfForecast / Shizuoka / Japan

12 Day Weather and Surf, issued 2 am Sunday 12 Oct 2025 JST

Forecast update in hr min s Forecast update imminent

Katahama surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Katahama sea temperature is 24.6° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Katahama this week:

The surf forecast for Katahama over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Oct 12) at 9PM. The primary swell is predicted to be 1.0m and 7s period. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Katahama in the next 12 days are 3.0m 11s and forecast to arrive on Monday (Oct 13) at 9AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 12s period and expected on Monday (Oct 13) at 6AM.

Wave Type	Time (JST) & Date	Wave Height & Period
Next good surf (1 star+)	9PM (Sun 12th Oct)	3.5ft (1.0m) 7s
Best Surf	9AM (Mon 13th Oct)	10ft (3.0m) 11s
Most Powerful	9AM (Mon 13th Oct)	10ft (3.0m) 11s

Table - best surf conditions forecast for Katahama over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Moderate rain (total 12mm), heaviest on Tue night. Warm (max 26°C on Mon morning, min 19°C on Tue night). Wind will be generally light.									Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Thu afternoon. Warm (max 23°C on Wed morning, min 19°C on Fri morning). Winds increasing (calm on Wed afternoon, fresh winds from the ENE by Fri morning).
	Sunday 12			Monday 13			Tuesday 14			Wednesday 15			Thursday 16			Friday 17			Saturday 18
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	0	0	0	!	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSE	SSE	E	S	SE	ESE	E	E	E	E	E	E	E	S	E	S	E	E	E	E	E
Period(s) (?)	7	7	9	11	9	8	5	5	4	5	5	5	6	7	18	12	9	8	10	10	10
Wave Graph (?)
kJ (?)	157	134	15	2061	470	118	68	33	19	28	45	65	139	1	6	3	318	152	225	188	94
Wind (km/h)	SSW	SW	NE	N	ESE	ESE	ENE	ENE	ENE	NE	SSE	NE	ENE	S	WSW	ENE	ENE	NE	NE	S	W
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross	cross	cross	glass	on	cross- on	cross	cross- on	cross- on	cross	on	cross	cross- on	cross- on	cross- off	cross	cross	cross	cross	cross- on	cross- off
High Tide / height (m)			7:41PM 1.60	10:19AM 1.36		8:20PM 1.46		12:39PM 1.37	9:27PM 1.32		2:05PM 1.45	12:27AM 1.24		2:48PM 1.52	2:11AM 1.32		3:18PM 1.58		3:10AM 1.42	3:43PM 1.62
Low Tide / height (m)		1:57PM 1.08		3:06AM 0.47	3:01PM 1.19		4:19AM 0.57	5:33PM 1.24		5:55AM 0.64		8:10PM 1.13	7:28AM 0.65		9:04PM 0.98	8:34AM 0.64		9:37PM 0.83	9:22AM 0.64		10:05PM 0.69

	Sunday 12			Monday 13			Tuesday 14			Wednesday 15			Thursday 16			Friday 17			Saturday 18
Sunrise	5:48	-	-	5:50	-	-	5:50	-	-	5:50	-	-	5:52	-	-	5:52	-	-	5:54	-	-
Sunset	-	5:16	-	-	5:15	-	-	5:15	-	-	5:13	-	-	5:12	-	-	5:10	-	-	5:08	-

Rain (mm)	-	-	4	-	-	-	-	-	8	-	-	-	-	2	3	-	-	-	-	-	2
Temp. °C	23	24	23	26	26	23	21	21	21	23	23	23	22	22	21	20	22	20	21	22	21
Feels °C (?)	25	25	26	28	28	24	22	21	22	24	24	24	23	23	23	15	19	17	20	22	22

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Recent Eyeball Surf Reports for Shizuoka

Wind Update Continuing clean conditions at Katahama (calm at Sumiyoshi wx 5 km from Katahama). 0.5m 9s swell from the E to make surfable waves.
1 hour 13 minutes ago Katahama

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1 h 13 min ago

0 km/h

NNE

Clean

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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.

Information about the Katahama Surf forecast

The above surf forecast table for Katahama provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Katahama can be found by selecting the local surf guide option on the grey menu. Our Katahama surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Katahama) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Katahama may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Katahama is 4 km (2 miles) from the city of Sagara. If you plan a holiday in Shizuoka, look for hotels and other accommodation in Sagara. Sagara has rooms for a wide range of budgets as well as car hire and transport links.