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Surf Forecasts:
Kaifu Rivermouth surfForecast / Shikoku / Japan
16 Day Weather and Surf, issued 8 am Sunday 17 May 2026 JSTForecast update in hr min s Forecast update imminent
Kaifu Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kaifu Rivermouth sea temperature is
20.8° C
(Which is normal for this time of year)Best Forecast Surf Conditions for Kaifu Rivermouth this week:
The surf forecast for Kaifu Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (May 17) at 6PM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.3m and 11s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kaifu Rivermouth in the next 16 days are 2.5m 7s and forecast to arrive on Sunday (May 24) at 6AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (May 20) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Sun 17th May) | 2.5ft (0.8m) 9s |
| Best Surf | 9PM (Fri 22nd May) | 5ft (1.5m) 9s |
| Most Powerful | 6AM (Sun 24th May) | 8ft (2.5m) 7s |
Table - best surf conditions forecast for Kaifu Rivermouth over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 18mm), heaviest on Tue night. Warm (max 25°C on Sun morning, min 18°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Wed morning. Warm (max 24°C on Fri morning, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | SE 10 | ESE 10 | ESE 11 | SE 10 | SE 10 | ESE 10 | ESE 10 | SSE 7 | ESE 10 | ESE 10 | E 9 | ESE 9 | ESE 6 | ESE 7 | ESE 7 | |
75 | 96 | 68 | 71 | 67 | 127 | 106 | 141 | 143 | 157 | 148 | 125 | 115 | 113 | 117 | 115 | 542 | 368 | 227 | 362 | 437 | |
Wind (km/h) | |||||||||||||||||||||
glassy | glassy | off | glassy | cross-on | off | glassy | glassy | cross-off | cross-off | cross-on | on | glassy | cross | cross-off | cross-off | cross | off | cross-on | cross-on | on | |
High Tide | 6:52PM1.85m | 5:51AM1.87m | 7:42PM1.81m | 6:32AM1.85m | 8:35PM1.73m | 7:15AM1.79m | 9:31PM1.64m | 8:04AM1.69m | 10:32PM1.57m | 9:03AM1.55m | 11:37PM1.53m | 10:20AM1.42m | 00:38AM1.52m | ||||||||
Low Tide | 12:01PM-0.09m | 00:19AM0.89m | 12:46PM-0.12m | 1:03AM0.96m | 1:34PM-0.08m | 1:48AM1.03m | 2:24PM0.03m | 2:41AM1.07m | 3:18PM0.18m | 3:46AM1.10m | 4:18PM0.35m | 5:10AM1.07m | 5:24PM0.51m | ||||||||
 | |  | | | | |  |  |  |  |  | | |  | | | |  | | | |
 | 5:01 | — | — | 5:00 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 4:56 | — | — |
 | — | 6:55 | — | — | 6:57 | — | — | 6:58 | — | — | 6:59 | — | — | 6:59 | — | — | 7:00 | — | — | 7:00 | — |
— | — | — | — | — | — | — | — | 18 | 7 | 3 | 7 | 4 | 2 | 1 | — | — | — | 1 | 1 | 22 | |
Temp °C | 25 | 25 | 21 | 25 | 25 | 20 | 24 | 22 | 20 | 22 | 22 | 21 | 22 | 20 | 18 | 24 | 24 | 19 | 22 | 21 | 20 |
25 | 25 | 21 | 25 | 25 | 22 | 24 | 24 | 21 | 24 | 24 | 22 | 26 | 22 | 17 | 20 | 21 | 20 | 21 | 20 | 19 | |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | SE 10 | ESE 10 | ESE 11 | SE 10 | SE 10 | SSE 7 | S 7 | SSE 7 | S 7 | ESE 10 | ESE 9 | SW 6 | SW 6 | SW 6 | — |
 kJ | 75 | 96 | 68 | 71 | 67 | 127 | 106 | 141 | 143 | 157 | 148 | 107 | 59 | 99 | 56 | 115 | 249 | 1 | 2 | 2 | — |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 12 | SE 12 | SE 10 | SE 11 | — | — | SE 7 | SSE 8 | SSE 7 | ESE 10 | ESE 10 | ESE 9 | ESE 10 | SSW 6 | SSW 7 | — | — | — | — |
| kJ | 16 | 17 | 22 | 23 | 4 | 31 | — | — | 26 | 71 | 76 | 125 | 115 | 113 | 117 | 31 | 25 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | ESE 14 | — | — | SE 10 | SE 12 | — | — | — | — | — | N 3 | N 3 | — | E 5 | S 7 | — | — | — | — | — | — |
| kJ | 19 | — | — | 4 | 6 | — | — | — | — | — | 1 | 1 | — | 18 | 32 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SE 3 | — | — | — | — | NE 3 | NE 3 | E 5 | ESE 6 | — | NE 3 | NE 4 | E 9 | ESE 9 | ESE 6 | ESE 7 | ESE 7 |
| kJ | — | — | — | — | 1 | — | — | — | — | 3 | 1 | 52 | 51 | — | 2 | 4 | 542 | 368 | 227 | 362 | 437 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 6 | 0 | 0 | 0 | 0 | 0 | 25 | 40 | 0 | 4 | 2 | 0 | 40 | 0 | 6 | 477 | 524 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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 Kaifu 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 Kaifu Rivermouth Surf forecast
The above surf forecast table for Kaifu Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kaifu Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Kaifu 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 (Kaifu 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 Kaifu 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.
Kaifu Rivermouth is 40 km (25 miles) from Muroto. If you plan a holiday in Shikoku, look for hotels and other accommodation in Muroto. Muroto has rooms for a wide range of budgets as well as car hire and transport links.
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