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Surf Forecasts:
Uchizuma surfForecast / Shikoku / Japan
16 Day Weather and Surf, issued 8 am Monday 20 Apr 2026 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
18.4° C
(Which is slightly cooler than normal)Best Forecast Surf Conditions for Uchizuma this week:
The surf forecast for Uchizuma over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Apr 21) at 12AM. The primary swell is predicted to be 1.7m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Uchizuma in the next 16 days are 1.6m 13s and forecast to arrive on Monday (Apr 20) at 6PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Tuesday (Apr 21) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Tue 21st Apr) | 5.5ft (1.7m) 12s |
| Best Surf | 12AM (Tue 21st Apr) | 5.5ft (1.7m) 12s |
| Most Powerful | 6PM (Mon 20th Apr) | 5ft (1.6m) 13s |
Table - best surf conditions forecast for Uchizuma over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Light rain (total 9mm), mostly falling on Mon morning. Warm (max 20°C on Tue morning, min 11°C on Wed night). Wind will be generally light. | Days 3-6 Weather Summary Heavy rain (total 53mm), heaviest during Thu afternoon. Warm (max 20°C on Sat morning, min 12°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
| 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) (?) | 13 | 13 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 13 | 13 | 8 | 8 | 9 | 7 | 7 | 12 | 6 | 6 | 6 | 7 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 1623 | 1030 | 843 | 560 | 280 | 202 | 139 | 104 | 77 | 61 | 60 | 250 | 101 | 59 | 69 | 24 | 23 | 19 | 114 | 176 | 233 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | on | cross- off | off | cross- off | off | glass | cross- on | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | glass | glass | cross- on | cross- on | cross- on |
High Tide / height (m) | 8:30PM 1.74 | 7:25AM 1.80 | 9:28PM 1.61 | 8:02AM 1.70 | 10:42PM 1.49 | 8:49AM 1.57 | 12:19AM 1.44 | 10:02AM 1.42 | 1:50AM 1.47 | 12:14PM 1.33 | 2:45AM 1.53 | 2:08PM 1.37 | |||||||||
Low Tide / height (m) | 1:40PM -0.02 | 1:50AM 0.94 | 2:27PM 0.07 | 2:33AM 1.06 | 3:21PM 0.21 | 3:29AM 1.17 | 4:29PM 0.37 | 5:11AM 1.22 | 5:57PM 0.49 | 7:33AM 1.14 | 7:28PM 0.55 | 8:49AM 0.96 | 8:38PM 0.57 | ||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
| Sunrise | 5:26 | - | - | 5:26 | - | - | 5:24 | - | - | 5:22 | - | - | 5:22 | - | - | 5:20 | - | - | 5:20 | - | - |
| Sunset | - | 6:36 | - | - | 6:37 | - | - | 6:37 | - | - | 6:37 | - | - | 6:38 | - | - | 6:39 | - | - | 6:40 | - |
 | |  |  |  |  | |  |  |  | | |  | | | | | | | |  | |
Rain (mm) | 3 | 3 | 1 | - | - | - | - | - | 2 | 17 | 18 | 2 | 3 | 5 | 5 | - | - | 3 | 4 | 2 | 11 |
| Temp. °C | 19 | 18 | 17 | 20 | 20 | 13 | 19 | 19 | 16 | 14 | 13 | 14 | 15 | 15 | 15 | 20 | 19 | 17 | 18 | 17 | 17 |
| Feels °C (?) | 18 | 18 | 18 | 14 | 14 | 9 | 16 | 16 | 13 | 12 | 11 | 11 | 14 | 14 | 14 | 19 | 19 | 18 | 15 | 13 | 15 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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.
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 16 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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