Yasuda Rivermouth Surf Forecast

/ Shikoku (17 surf breaks) /

Japan (129 surf breaks)

Surf Forecasts:

Yasuda Rivermouth surfForecast / Shikoku / Japan

12 Day Weather and Surf, issued 2 am Saturday 11 Oct 2025 JST

Forecast update in hr min s Forecast update imminent

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

Today's Yasuda Rivermouth sea temperature is 27.3° C
(Which is 2.6°C warmer than normal for this time of year)

Best Forecast Surf Conditions for Yasuda Rivermouth this week:

The surf forecast for Yasuda Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Oct 11) at 6AM. The primary swell is predicted to be 1.5m and 10s period with a secondary swell of 0.5m and 12s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Yasuda Rivermouth in the next 12 days are 3.5m 12s and forecast to arrive on Sunday (Oct 12) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Sunday (Oct 12) at 3PM.

Wave Type	Time (JST) & Date	Wave Height & Period
Next good surf (1 star+)	6AM (Sat 11th Oct)	5ft (1.5m) 10s
Best Surf	3PM (Sun 12th Oct)	11ft (3.5m) 12s
Most Powerful	3PM (Sun 12th Oct)	11ft (3.5m) 12s

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

Updates in hr min s Forecast update imminent

12 Days Hourly

Print Table

	Short Range Forecast Moderate rain (total 16mm), heaviest on Sat night. Warm (max 28°C on Mon morning, min 22°C on Mon night). Wind will be generally light.									Days 3-6 Weather Summary Moderate rain (total 10mm), heaviest on Wed afternoon. Warm (max 26°C on Thu morning, min 19°C on Thu night). Wind will be generally light.
	Saturday 11			Sunday 12			Monday 13			Tuesday 14			Wednesday 15			Thursday 16			Friday 17
	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night
Rating (10 max)	3	3	3	4	5	3	1	0	0	0	1	1	1	1	1	1	0	1	0	0	4
Swell Height Map See all maps
Wave Height (m) & direction (?)	SSE	SSE	S	SSW	S	ESE	E	E	E	E	E	E	ESE	ESE	ESE	SE	ESE	SE	ESE	S	E
Period(s) (?)	9	9	10	11	12	9	9	9	8	8	8	7	7	7	7	6	8	8	8	6	9
Wave Graph (?)
kJ (?)	674	566	468	1051	3106	480	96	56	22	12	48	103	64	66	51	37	78	64	23	1	1359
Wind (km/h)	ENE	SE	NE	ENE	NE	NNW	NNW	SSE	NE	ENE	SSE	N	ENE	ESE	ENE	W	WSW	N	E	E	E
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- off	glass	off	off	off	cross- off	cross- off	cross	glass	glass	glass	cross- off	glass	cross- off	glass	glass	cross- on	cross- off	cross- off	cross- off	cross- off
High Tide / height (m)			7:50PM 1.76	9:52AM 1.52		8:25PM 1.64	11:27AM 1.40		9:12PM 1.49		1:44PM 1.39	10:57PM 1.35		3:00PM 1.47	1:31AM 1.35		3:37PM 1.54	2:56AM 1.46		4:05PM 1.61
Low Tide / height (m)		2:11PM 0.92	2:51AM 0.18		2:51PM 1.08		3:52AM 0.34	3:51PM 1.21		5:19AM 0.49		6:36PM 1.25	7:11AM 0.54		8:42PM 1.11	8:34AM 0.52		9:29PM 0.93	9:29AM 0.49		10:03PM 0.75

	Saturday 11			Sunday 12			Monday 13			Tuesday 14			Wednesday 15			Thursday 16			Friday 17
Sunrise	6:03	-	-	6:05	-	-	6:05	-	-	6:07	-	-	6:07	-	-	6:07	-	-	6:09	-	-
Sunset	-	5:36	-	-	5:35	-	-	5:34	-	-	5:31	-	-	5:30	-	-	5:30	-	-	5:29	-

Rain (mm)	1	-	8	5	2	-	-	-	-	-	-	-	1	4	3	1	-	1	-	-	3
Temp. °C	25	26	24	26	25	24	28	27	23	24	25	23	25	25	23	26	26	23	24	24	22
Feels °C (?)	27	30	27	29	25	26	31	29	26	28	28	26	29	28	26	28	28	25	24	23	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 Shikoku

Wind Update The wind is still offshore at Yasuda Rivermouth (strong winds from the ENE at Murotomisaki(47899-0) 27 km from Yasuda Rivermouth). 1.2m 10s swell from the SSE with a 0.7m 11s groundswell from the E and a 0.4m 11s groundswell, also from the E. 3 swells combining to make bigger set waves.
2 hours 2 minutes ago Yasuda Rivermouth

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27 km away, 2 h 2 min ago

39 km/h

ENE

0.0

27.3

Air / Water (°C)

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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 Yasuda Rivermouth 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 Yasuda Rivermouth Surf forecast

The above surf forecast table for Yasuda Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Yasuda Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Yasuda Rivermouth 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 (Yasuda Rivermouth) 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 Yasuda Rivermouth 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.

Are you planning a holiday in Shikoku? If you are looking for accommodation near Yasuda Rivermouth, camping, hotels and holiday cottages in Shikoku, consider staying in Aki which is 10 km (6 miles) away. Other places in and around Shikoku where you can find information about places to rent, and car hire include Muroto which is 23 km (14 miles) away, Kochi, Ino and Susaki.