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Surf Forecasts

Kaifu Rivermouth surfForecast / Shikoku / Japan

information circle12 Day Weather and Surf, issued 8 am Sunday 11 May 2025 JST
Forecast 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
18.2° C
 (Which is 2.3°C colder than average for this time of year)

Best Forecast Surf Conditions for Kaifu Rivermouth this week:

The surf forecast for Kaifu Rivermouth over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (May 17) at 3AM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.3m and 10s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kaifu Rivermouth in the next 12 days are 1.4m 6s and forecast to arrive on Saturday (May 17) at 9AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Saturday (May 17) at 12PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Sat 17th May)3.5ft (1.1m) 6s
Best Surf 3AM (Sat 17th May)3.5ft (1.1m) 6s
Most Powerful 9AM (Sat 17th May)4ft (1.2m) 7s

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

Hourly12 Days
Shikoku Surf
Print Surf Table
Updates in  hr  min  s Forecast update imminent 
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.8
SSW
0.9
SW
0.6
ESE
0.5
ESE
0.5
ESE
0.5
ESE
0.4
ESE
0.4
ESE
0.3
ESE
0.3
ESE
0.4
SE
0.4
ESE
0.4
ESE
0.5
SE
0.4
ESE
0.5
SE
0.5
SE
0.8
SE
1.2
SE
1.4
S
0.8
SSE
0.4
SE
0.5
SE
1.2
S
0.5
SE
1.1
SSW
1.2
SSW
0.7
SSW
0.5
SE
0.6
SE
0.7
SE
0.7
SE
0.7
SE
1.1
S
0.7
SE
0.7
SE
Period(s) (?)7799998810101010101010101057661211511777111010101071010
Wave
Graph
(?)Metric surfscale
Energy (?)6673544545472826212027424048384649381561485049648566140147455785108106104111106108
Wind
(km/h)
10
E
5
ESE
15
SSW
5
NE
5
SSE
5
NW
5
E
5
SE
5
W
5
SSE
10
S
10
W
5
SSE
5
ESE
0
WNW
5
ENE
0
S
5
S
5
E
10
SSE
10
W
5
ESE
15
SW
15
SW
5
SSW
5
NE
10
N
5
NE
5
SE
5
SW
5
ENE
10
ENE
5
NW
5
SSE
10
E
10
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		glasscrossglasscross-
on		offglassoncross-
off		glasscross-
on		cross-
off		glassglassglassglassglassglassglasscross-
on		cross-
off		glasscrosscrosscrosscrosscross-
off		crossoncrosscrosscrossoffoncross-
on		cross-
off
High Tide
/ height (m)
5:42PM
1.67
5:02AM
1.71
6:17PM
1.70
5:27AM
1.71
6:52PM
1.70
5:53AM
1.71
7:28PM
1.67
6:20AM
1.70
8:07PM
1.62
6:49AM
1.67
8:50PM
1.56
7:21AM
1.62
9:40PM
1.51
8:00AM
1.56
10:41PM
1.48
8:52AM
1.47
11:47PM
1.48
10:11AM
1.38
12:49AM
1.52
11:58AM
1.35
1:40AM
1.58
1:39PM
1.40
2:23AM
1.64
Low Tide
/ height (m)
11:10AM
0.30
11:20PM
0.80
11:38AM
0.22
11:50PM
0.84
12:08PM
0.17
12:20AM
0.89
12:40PM
0.16
12:50AM
0.95
1:14PM
0.18
1:22AM
1.00
1:50PM
0.22
1:57AM
1.06
2:31PM
0.28
2:42AM
1.11
3:19PM
0.35
3:45AM
1.14
4:17PM
0.43
5:14AM
1.12
5:26PM
0.51
6:47AM
1.01
6:40PM
0.57
7:56AM
0.83
7:50PM
0.62
Sunday
11
Monday
12
Tuesday
13
Wednesday
14
Thursday
15
Friday
16
Saturday
17
Sunday
18
Monday
19
Tuesday
20
Wednesday
21
Thursday
22
Sunrise5:05--5:05--5:03--5:03--5:01--5:01--5:01--5:00--4:58--4:58--4:58--4:58--
Sunset-6:52--6:52--6:53--6:53--6:54--6:55--6:55--6:57--6:58--6:59--6:59--7:00-
part cloudcloudmod rainpart cloudpart cloudclearclearclearclearpart cloudpart cloudpart cloudlight rainmod rainlight rainlight raincloudrain showersclearclearrain showersheavy rainlight rainrain showerspart cloudthunderstorm part cloudclearclearpart cloudcloudpart cloudclearclearclearpart cloud
Rain (mm)
--6---------2632-3--141431-1----------
Temp. °C191916191916212117222217201719192019242321192121252319242420222220252520
Feels °C (?)181916181915202017202117201821212321252421222222282619222321232221262620

Short Range Forecast: Light rain (total 6mm), mostly falling on Sun night. Warm (max 21°C on Tue morning, min 15°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Moderate rain (total 16mm), heaviest on Thu afternoon. Warm (max 22°C on Wed morning, min 16°C on Wed night). Wind will be generally light.

Days 6-9 Weather Summary Heavy rain (total 33mm), heaviest during Sun morning. Warm (max 25°C on Mon morning, min 17°C on Mon night). Wind will be generally light.

Long Range Forecast: Mostly dry. Warm (max 25°C on Thu morning, min 17°C on Thu night). Wind will be generally light.

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>
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View detailed surf forecast for Kaifu Rivermouth at:
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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 12 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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