Uchizuma surfForecast / Shikoku / Japan

information circle12 Day Weather and Surf, issued 8 pm Sunday 14 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
20.7° 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 Monday (Dec 15) at 3AM. The primary swell is predicted to be 0.7m and 10s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Uchizuma in the next 12 days are 1.9m 8s and forecast to arrive on Sunday (Dec 21) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 7s period and expected on Monday (Dec 15) at 3AM.

Wave TypeTime (JST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Mon 15th Dec)2.5ft (0.7m) 10s
Best Surf12PM (Sun 21st Dec)5ft (1.6m) 8s
Most Powerful 6PM (Sun 21st Dec)6ft (1.9m) 8s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Very mild (max 14°C on Wed morning, min 6°C on Sun night). Wind will be generally light.

Days 3-6 Weather Summary Heavy rain (total 26mm), heaviest during Fri night. Very mild (max 19°C on Sat afternoon, min 10°C on Wed night). Wind will be generally light.

Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sun
21
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
1
1
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
1
0
2
Swell
Height Map
Wave Height (m) & direction (?)
0.4
ESE
0.7
ESE
0.6
SE
0.5
SE
0.5
SE
0.4
ESE
0.4
SE
0.4
SE
0.4
SE
0.3
SE
0.4
SE
0.4
SE
0.3
ESE
0.7
ESE
1
ESE
1.3
SSE
0.4
ESE
0.4
SE
0.8
ESE
1.6
SE
1.7
SE
Period(s) (?)11109998888810101055699988
Wave
Graph
(?)Metric surfscale
Energy kJ (?)398071413828171615112423182252101341994322380
Wind
(km/h)
10
WNW
10
NW
0
SSE
10
NNW
5
NNW
5
ESE
5
NW
5
NW
5
ESE
5
NNW
10
N
10
ENE
5
NNW
5
ENE
5
E
20
S
5
SW
5
SSE
5
N
10
SE
10
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offglassoffglasscross-
on
offglasscross-
on
offcross-
off
cross-
off
offglassglassonglassonglassoncross-
off
High Tide
/ height (m)
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
6:07AM
1.63
4:50PM
1.66
6:41AM
1.66
5:25PM
1.70
7:15AM
1.67
6:00PM
1.72
Low Tide
/ height (m)
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
11:11PM
0.22
11:26AM
1.00
11:46PM
0.16
12:00PM
0.99
12:21AM
0.13
12:33PM
0.98
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Friday
19
Saturday
20
Sun
21
Sunrise-6:58--6:58--7:00--7:00--7:01--7:01--7:01-
Sunset--4:54--4:54--4:55--4:55--4:55--4:57--4:57
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
light rain
heavy rain
rain showers
rain showers
rain showers
mod rain
rain showers
Rain (mm)
--------------515331775
Temp. °C711117121281413111414121416171819171717
Feels °C (?)38931095121191111101314141819181717
  • 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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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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