Uchizuma surfForecast / Shikoku / Japan

information circle12 Day Weather and Surf, issued 8 pm Thursday 11 Dec 2025 JST
Forecast update in hr  min  s Forecast update imminent
Uchizuma surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Uchizuma sea temperature is
21.0° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Uchizuma this week:

The surf forecast for Uchizuma over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Dec 14) at 12AM. The primary swell is predicted to be 0.5m and 11s period with a secondary swell of 0.3m and 11s. Another secondary swell of 0.5m and 3s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Uchizuma in the next 12 days are 1.0m 10s and forecast to arrive on Monday (Dec 15) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.8m 6s period and expected on Friday (Dec 12) at 3PM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+)12AM (Sun 14th Dec)1.5ft (0.5m) 11s
Best Surf12AM (Sun 14th Dec)1.5ft (0.5m) 11s
Most Powerful12AM (Mon 15th Dec)3.5ft (1.0m) 10s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 13mm), heaviest on Sat night. Very mild (max 13°C on Thu night, min 2°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Very mild (max 15°C on Wed morning, min 6°C on Sun night). Wind will be generally light.

Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thu
18
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
1
0
0
0
0
0
1
1
0
1
1
1
1
1
0
0
0
1
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.5
ESE
0.4
ESE
0.4
ESE
0.4
ESE
0.3
ESE
0.4
ESE
0.5
E
0.6
ESE
0.6
ESE
1
ESE
0.7
ESE
0.6
ESE
0.6
ESE
0.6
ESE
0.4
ESE
0.4
ESE
0.4
ESE
0.5
ESE
0.4
ESE
0.4
ESE
0.4
ESE
Period(s) (?)1010111011121179101010109910910999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)5831403522466140611888363615532363451343233
Wind
(km/h)
10
NNW
30
NNE
25
NNE
20
N
10
NNE
5
ESE
5
W
10
NNW
20
WNW
10
NW
10
NW
5
N
10
NW
5
N
5
SE
5
NW
5
W
5
NE
20
NNE
15
NNE
15
NE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
on
glassoffcross-
off
cross-
off
offglassoffglasscross-
on
cross-
off
glassglasscross-
off
cross-
off
cross-
off
High Tide
/ height (m)
10:28PM
1.35
12:04PM
1.51
12:04AM
1.27
12:52PM
1.50
1:47AM
1.26
1:38PM
1.51
3:09AM
1.33
2:20PM
1.53
4:07AM
1.42
2:59PM
1.55
4:52AM
1.51
3:37PM
1.59
5:31AM
1.58
4:14PM
1.62
Low Tide
/ height (m)
5:03AM
0.64
6:30PM
0.89
6:05AM
0.79
7:42PM
0.77
7:14AM
0.90
8:37PM
0.64
8:22AM
0.97
9:21PM
0.52
9:20AM
1.01
10:00PM
0.40
10:08AM
1.02
10:36PM
0.30
10:49AM
1.01
Friday
12
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thu
18
Sunrise-6:56--6:56--6:58--6:58--6:58--7:00--7:00-
Sunset--4:53--4:53--4:54--4:54--4:54--4:55--4:55
part cloud
part cloud
clear
clear
clear
part cloud
heavy rain
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
clear
clear
clear
Rain (mm)
------13--------------
Temp. °C139931011121210711117121291514111212
Feels °C (?)1122-46811104378310961312788
  • 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)
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Information about the Uchizuma Surf forecast

The above surf forecast table for Uchizuma provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Uchizuma can be found by selecting the local surf guide option on the grey menu. Our Uchizuma 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 (Uchizuma) 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 Uchizuma 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 Uchizuma, camping, hotels and holiday cottages in Shikoku, consider staying in Anan which is 40 km (25 miles) away. Other places in and around Shikoku where you can find information about places to rent, and car hire include Muroto which is 45 km (28 miles) away, Komatsushima, Aki and Kamojima.

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