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Niyodo Rivermouth surfForecast / Shikoku / Japan
12 Day Weather and Surf, issued 2 am Sunday 15 Jun 2025 JST
Best Forecast Surf Conditions for Niyodo Rivermouth this week:
The surf forecast for Niyodo Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jun 15) at 6AM. The primary swell is predicted to be 2.4m and 8s period with a secondary swell of 0.3m and 9s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Niyodo Rivermouth in the next 12 days are 2.4m 8s and forecast to arrive on Sunday (Jun 15) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sun 15th Jun) | 8ft (2.4m) 8s |
| Best Surf | 12AM (Mon 16th Jun) | 6.5ft (2.0m) 8s |
| Most Powerful | 6AM (Sun 15th Jun) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Niyodo Rivermouth over the next 12 days.
Sunday 15 | Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 7 | 6 | 7 | 6 | 7 | 7 | 7 | 6 | 5 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 5 | 10 | 10 | 10 | 6 | 6 | 6 | 6 | 9 | 6 | 6 | 5 | 5 | 9 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 604 | 417 | 816 | 555 | 276 | 335 | 184 | 423 | 163 | 77 | 55 | 38 | 19 | 20 | 20 | 26 | 19 | 28 | 28 | 39 | 40 | 56 | 50 | 60 | 72 | 134 | 171 | 102 | 121 | 186 | 174 | 71 | 62 | 50 | 39 | 26 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | glass | on | cross- on | glass | glass | on | glass | glass | glass | off | glass | on | off | glass | on | glass | glass | on | on | glass | cross- on | cross | glass | cross- on | off | glass | glass | glass | glass | on | glass | glass | on | glass |
High Tide / height (m) | 9:24PM 1.63 | 8:17AM 1.61 | 10:07PM 1.62 | 9:11AM 1.54 | 10:52PM 1.61 | 10:19AM 1.46 | 11:40PM 1.61 | 11:45AM 1.40 | 12:30AM 1.61 | 1:20PM 1.41 | 1:22AM 1.63 | 2:49PM 1.49 | 2:14AM 1.66 | 4:02PM 1.60 | 3:05AM 1.70 | 5:03PM 1.71 | 3:55AM 1.74 | 5:56PM 1.78 | 4:44AM 1.78 | 6:44PM 1.81 | 5:31AM 1.81 | 7:29PM 1.80 | ||||||||||||||
Low Tide / height (m) | 2:28PM 0.23 | 2:50AM 0.98 | 3:10PM 0.31 | 3:43AM 0.96 | 3:57PM 0.41 | 4:46AM 0.90 | 4:51PM 0.54 | 5:56AM 0.81 | 5:53PM 0.68 | 7:07AM 0.66 | 7:04PM 0.81 | 8:12AM 0.49 | 8:18PM 0.90 | 9:10AM 0.31 | 9:27PM 0.96 | 10:04AM 0.15 | 10:27PM 0.99 | 10:55AM 0.03 | 11:20PM 1.00 | 11:44AM -0.04 | 12:08AM 0.99 | 12:31PM -0.06 | 12:52AM 0.98 | |||||||||||||
Sunday 15 | Monday 16 | Tuesday 17 | Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | Sunday 22 | Monday 23 | Tuesday 24 | Wednesday 25 | Thursday 26 | |||||||||||||||||||||||||
| Sunrise | 4:54 | - | - | 4:54 | - | - | 4:54 | - | - | 4:54 | - | - | 4:54 | - | - | 4:54 | - | - | 4:54 | - | - | 4:54 | - | - | 4:54 | - | - | 4:56 | - | - | 4:56 | - | - | 4:56 | - | - |
| Sunset | - | 7:15 | - | - | 7:15 | - | - | 7:16 | - | - | 7:16 | - | - | 7:16 | - | - | 7:16 | - | - | 7:17 | - | - | 7:17 | - | - | 7:17 | - | - | 7:17 | - | - | 7:17 | - | - | 7:19 | - |
 | |  | |  |  | |  |  |  | | | | | | | | | | | | | |  | | | | | | |  | | | | | | |
Rain (mm) | - | - | - | - | 2 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | 6 | 9 | 2 | 5 | 8 | 1 | 2 | - | - | - | 1 | 1 | 1 | - | - | 1 | - |
| Temp. °C | 28 | 28 | 25 | 27 | 27 | 25 | 28 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 25 | 26 | 25 | 26 | 26 | 24 | 26 | 26 | 25 | 26 | 26 | 24 | 26 | 26 | 24 | 27 | 27 | 25 |
| Feels °C (?) | 31 | 32 | 30 | 31 | 29 | 30 | 32 | 31 | 30 | 31 | 31 | 27 | 28 | 29 | 28 | 28 | 28 | 27 | 28 | 30 | 30 | 31 | 30 | 28 | 31 | 29 | 29 | 30 | 30 | 28 | 31 | 30 | 28 | 31 | 32 | 30 |
Short Range Forecast: Light rain (total 6mm), mostly falling on Mon night. Warm (max 28°C on Sun morning, min 23°C on Tue night). Wind will be generally light. | Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Wed morning, min 23°C on Wed night). Wind will be generally light. | Days 6-9 Weather Summary Heavy rain (total 33mm), heaviest during Sat afternoon. Warm (max 26°C on Sat afternoon, min 23°C on Sun night). Wind will be generally light. | Long Range Forecast: Light rain (total 4mm), mostly falling on Tue night. Warm (max 27°C on Thu morning, min 24°C on Tue night). Wind will be generally light. | |||||||||||||||||||||||||||||||||
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Surf Rating (10 Max)
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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 Niyodo 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 Niyodo Rivermouth Surf forecast
The above surf forecast table for Niyodo Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Niyodo Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Niyodo 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 (Niyodo 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 Niyodo 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.
Niyodo Rivermouth is 15 km (9 miles) from Kochi. If you plan a holiday in Shikoku, look for hotels and other accommodation in Kochi. Kochi has rooms for a wide range of budgets as well as car hire and transport links.
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