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Uchizuma surfForecast / Shikoku / Japan
12 Day Weather and Surf, issued 2 am Sunday 21 Dec 2025 JSTForecast 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
20.1° C
(Which is normal for this time of year)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 21) at 12PM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.6m and 4s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Uchizuma in the next 12 days are 3.0m 9s and forecast to arrive on Wednesday (Dec 24) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Monday (Dec 22) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sun 21st Dec) | 3.5ft (1.1m) 8s |
| Best Surf | 9PM (Tue 23rd Dec) | 10ft (3.0m) 9s |
| Most Powerful | 3AM (Wed 24th Dec) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Uchizuma over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Heavy rain (total 33mm), heaviest during Sun afternoon. Very mild (max 17°C on Sun morning, min 4°C on Mon night). Wind will be generally light. | Days 3-6 Weather Summary Moderate rain (total 12mm), heaviest on Wed morning. Very mild (max 18°C on Wed morning, min 3°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 10 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 182 | 203 | 160 | 188 | 162 | 138 | 253 | 506 | 1496 | 1150 | 901 | 598 | 306 | 191 | 90 | 40 | 31 | 10 | 9 | 9 | 15 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross | cross | off | cross- off | glass | off | off | off | off | off | cross | off |
High Tide / height (m) | 6:00PM 1.72 | 7:49AM 1.67 | 6:35PM 1.72 | 8:22AM 1.65 | 7:11PM 1.69 | 8:57AM 1.64 | 7:51PM 1.64 | 9:32AM 1.63 | 8:37PM 1.56 | 10:10AM 1.61 | 9:33PM 1.47 | 10:51AM 1.59 | 10:48PM 1.38 | ||||||||
Low Tide / height (m) | 12:33PM 0.98 | 12:55AM 0.12 | 1:07PM 0.97 | 1:30AM 0.14 | 1:42PM 0.96 | 2:05AM 0.19 | 2:22PM 0.95 | 2:41AM 0.27 | 3:07PM 0.92 | 3:20AM 0.38 | 4:00PM 0.88 | 4:03AM 0.52 | 5:04PM 0.81 | ||||||||
Sunday 21 | Monday 22 | Tuesday 23 | Wednesday 24 | Thursday 25 | Friday 26 | Saturday 27 | |||||||||||||||
| Sunrise | 7:01 | - | - | 7:01 | - | - | 7:03 | - | - | 7:03 | - | - | 7:03 | - | - | 7:03 | - | - | 7:05 | - | - |
| Sunset | - | 4:57 | - | - | 4:58 | - | - | 4:58 | - | - | 4:59 | - | - | 4:59 | - | - | 5:00 | - | - | 5:00 | - |
 |  |  |  |  | |  |  |  |  | |  | | | | | |  | | | | |
Rain (mm) | 10 | 15 | - | - | - | - | - | 1 | 7 | 9 | - | 1 | - | 2 | - | - | - | - | - | - | - |
| Temp. °C | 17 | 15 | 11 | 10 | 10 | 7 | 10 | 11 | 16 | 18 | 18 | 15 | 15 | 15 | 10 | 8 | 8 | 3 | 8 | 9 | 4 |
| Feels °C (?) | 16 | 14 | 7 | 4 | 3 | 3 | 8 | 10 | 14 | 16 | 18 | 15 | 13 | 14 | 6 | 4 | 3 | -2 | 5 | 5 | -1 |
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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 Uchizuma 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.
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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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