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Surf Forecasts:
Yasuda Rivermouth surfForecast / Shikoku / Japan
16 Day Weather and Surf, issued 8 pm Saturday 11 Apr 2026 JSTForecast 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
19.0° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Yasuda Rivermouth this week:
The surf forecast for Yasuda Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Apr 12) at 12AM. The primary swell is predicted to be 0.7m and 11s period with a secondary swell of 0.7m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Yasuda Rivermouth in the next 16 days are 4.0m 16s and forecast to arrive on Friday (Apr 17) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Wednesday (Apr 15) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 12th Apr) | 2.5ft (0.7m) 11s |
| Best Surf | 9PM (Fri 17th Apr) | 13ft (4.0m) 16s |
| Most Powerful | 9PM (Fri 17th Apr) | 13ft (4.0m) 16s |
Table - best surf conditions forecast for Yasuda Rivermouth over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Some drizzle, heaviest during Tue afternoon. Warm (max 21°C on Tue morning, min 16°C on Sat night). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 12mm), heaviest on Wed afternoon. Warm (max 22°C on Thu morning, min 15°C on Thu night). Wind will be generally light. | |||||||||||||||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | ||||||||||||||||
| Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | ||
Rating (10 max) | ||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | |
Wave (?)Graph  | ||||||||||||||||||||||
 kJ (?) | 101 | 101 | 97 | 143 | 143 | 143 | 183 | 200 | 280 | 330 | 1464 | 1978 | 2374 | 2676 | 2413 | 2696 | 3217 | 5486 | 7073 | 5937 | 4611 | |
Wind (km/h) | ||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross | cross | cross- off | cross | on | glass | cross- off | cross | off | off | off | off | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | |
High Tide / height (m) | 3:18AM 1.42 | 1:53PM 1.33 | 3:44AM 1.53 | 3:05PM 1.46 | 4:08AM 1.64 | 3:57PM 1.61 | 4:34AM 1.73 | 4:42PM 1.75 | 5:00AM 1.81 | 5:25PM 1.86 | 5:27AM 1.86 | 6:08PM 1.92 | 5:56AM 1.89 | |||||||||
Low Tide / height (m) | 8:59AM 1.09 | 8:46PM 0.57 | 9:35AM 0.92 | 9:33PM 0.49 | 10:07AM 0.72 | 10:13PM 0.43 | 10:38AM 0.52 | 10:50PM 0.41 | 11:11AM 0.33 | 11:27PM 0.44 | 11:45AM 0.16 | 12:03AM 0.51 | 12:22PM 0.04 | |||||||||
Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | Sat 18 | ||||||||||||||||
| Sunrise | - | 5:37 | - | - | 5:37 | - | - | 5:35 | - | - | 5:35 | - | - | 5:33 | - | - | 5:31 | - | - | 5:31 | - | |
| Sunset | - | - | 6:30 | - | - | 6:31 | - | - | 6:32 | - | - | 6:34 | - | - | 6:34 | - | - | 6:35 | - | - | 6:36 | |
 |  |  |  | | | | |  | | | |  | |  |  | |  | | | | ||
Rain (mm) | - | - | - | - | - | - | - | - | 1 | - | 2 | 4 | 4 | - | - | 1 | - | 1 | - | - | - | |
| Temp. °C | 17 | 19 | 19 | 16 | 20 | 20 | 17 | 21 | 19 | 17 | 17 | 16 | 16 | 22 | 22 | 17 | 17 | 18 | 17 | 19 | 19 | |
| Feels °C (?) | 16 | 18 | 19 | 16 | 19 | 20 | 18 | 21 | 19 | 17 | 17 | 16 | 15 | 21 | 18 | 14 | 14 | 14 | 15 | 19 | 19 | |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 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 16 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.
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