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Surf Forecasts:

Niyodo Rivermouth surfForecast / Shikoku / Japan

information circle12 Day Weather and Surf, issued 8 am Saturday 10 Jan 2026 JST
Forecast update in hr  min  s Forecast update imminent
Niyodo Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Niyodo Rivermouth sea temperature is
17.6° C
 (Which is slightly cooler than normal)

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 Tuesday (Jan 13) at 9AM. The primary swell is predicted to be 1.3m and 6s period with a secondary swell of 1.1m and 6s. Another secondary swell of 0.1m and 9s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Niyodo Rivermouth in the next 12 days are 2.0m 7s and forecast to arrive on Saturday (Jan 10) at 6PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Sunday (Jan 11) at 9AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Tue 13th Jan)4.5ft (1.3m) 6s
Best Surf 9AM (Tue 13th Jan)4.5ft (1.3m) 6s
Most Powerful 6PM (Sat 10th Jan)6.5ft (2.0m) 7s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Mostly dry. Icy conditions (max 12°C on Sat afternoon, min -2°C on Sun night). Winds increasing (calm on Sat afternoon, fresh winds from the NW by Sun afternoon).

Days 3-6 Weather Summary Mostly dry. Very mild (max 12°C on Tue morning, min 2°C on Tue night). Wind will be generally light.

Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
1
0
0
0
0
0
0
0
2
1
1
0
0
0
0
0
1
1
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.1
E
1.7
SW
1.8
SW
0.8
SW
0.6
SW
0.1
E
0.3
SW
0.3
SW
0.6
SW
1.3
SW
1.8
SW
1.5
WSW
0.4
SW
0.2
ESE
0.2
ESE
0.3
ESE
0.3
ESE
1.5
SW
0.7
SW
0.3
ESE
0.3
ESE
Period(s) (?)10667814654676611101010661010
Wave
Graph
(?)Metric surfscale
Energy kJ (?)21852615253464111452951651211101918177391918
Wind
(km/h)
0
NNW
0
ESE
25
W
25
NW
30
NW
10
N
10
NNW
10
SSW
5
N
5
WNW
20
WNW
10
NNW
10
NW
10
NNW
10
N
5
NNE
5
SW
10
WNW
10
NNW
10
N
10
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassglasscrosscross-
off		cross-
off		offcross-
off		cross-
on		offglasscross-
off		cross-
off		cross-
off		offoffglassglasscross-
off		offoffoff
High Tide
/ height (m)
10:37AM
1.57
11:06PM
1.30
11:12AM
1.52
12:47AM
1.22
11:57AM
1.47
2:56AM
1.26
12:59PM
1.44
4:19AM
1.36
2:10PM
1.45
5:04AM
1.47
3:13PM
1.50
5:38AM
1.56
4:04PM
1.57
Low Tide
/ height (m)
5:08PM
0.76
4:41AM
0.87
6:16PM
0.73
5:31AM
1.03
7:35PM
0.68
7:02AM
1.15
8:47PM
0.59
8:54AM
1.18
9:43PM
0.48
10:06AM
1.15
10:28PM
0.37
10:51AM
1.09
11:07PM
0.26
Saturday
10
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Sunrise7:09--7:09--7:09--7:09--7:09--7:09--7:09--
Sunset-5:14--5:15--5:15--5:16--5:17--5:19--5:20-
clear
part cloud
part cloud
part cloud
clear
clear
clear
cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C1012124325641212668310121113147
Feels °C (?)6107-3-6-512187123-2799993
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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 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.

View detailed surf forecast for Niyodo Rivermouth at:
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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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