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Surf Forecasts:
Uchizuma surfForecast / Shikoku / Japan
16 Day Weather and Surf, issued 2 am Monday 18 May 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
20.9° 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 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (May 18) at 6AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.3m and 12s. 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 2.2m 8s and forecast to arrive on Friday (May 22) at 9PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Thursday (May 21) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Mon 18th May) | 2.5ft (0.7m) 9s |
| Best Surf | 9PM (Fri 22nd May) | 7ft (2.2m) 8s |
| Most Powerful | 9PM (Fri 22nd May) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Uchizuma over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 17mm), heaviest on Tue night. Warm (max 25°C on Mon morning, min 18°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 32mm), heaviest during Thu afternoon. Warm (max 25°C on Sat morning, min 19°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | Friday 22 | Saturday 23 | Sunday 24 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
ESE 9 | ESE 9 | ESE 10 | ESE 10 | SE 10 | ESE 11 | SE 10 | ESE 10 | ESE 10 | ESE 10 | SSW 6 | ESE 10 | E 9 | ESE 9 | ESE 9 | E 7 | ESE 7 | SE 6 | ESE 9 | ESE 10 | ESE 10 | |
71 | 86 | 88 | 133 | 160 | 143 | 157 | 130 | 122 | 115 | 176 | 117 | 281 | 180 | 288 | 434 | 158 | 88 | 49 | 55 | 55 | |
Wind (km/h) | |||||||||||||||||||||
glassy | on | glassy | on | on | glassy | glassy | cross-on | glassy | glassy | cross-on | off | cross-off | cross-off | glassy | cross-on | cross-on | glassy | cross | glassy | off | |
High Tide | 7:42PM1.81m | 6:32AM1.85m | 8:35PM1.73m | 7:15AM1.79m | 9:31PM1.64m | 8:04AM1.69m | 10:32PM1.57m | 9:03AM1.55m | 11:37PM1.53m | 10:20AM1.42m | 00:38AM1.52m | 12:01PM1.33m | 1:31AM1.54m | ||||||||
Low Tide | 12:46PM-0.12m | 1:03AM0.96m | 1:34PM-0.08m | 1:48AM1.03m | 2:24PM0.03m | 2:41AM1.07m | 3:18PM0.18m | 3:46AM1.10m | 4:18PM0.35m | 5:10AM1.07m | 5:24PM0.51m | 6:42AM0.98m | 6:35PM0.64m | ||||||||
 | |  | |  |  |  |  |  | |  |  | | |  | | |  | |  |  | |
 | 5:00 | — | — | 4:58 | — | — | 4:58 | — | — | 4:58 | — | — | 4:56 | — | — | 4:56 | — | — | 4:56 | — | — |
 | — | 6:57 | — | — | 6:58 | — | — | 6:59 | — | — | 6:59 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — |
— | — | — | — | — | 5 | 8 | 4 | — | 1 | 22 | 3 | — | — | — | — | — | 6 | 9 | 2 | 3 | |
Temp °C | 25 | 25 | 20 | 24 | 24 | 20 | 22 | 23 | 22 | 22 | 21 | 22 | 22 | 21 | 20 | 25 | 25 | 22 | 21 | 21 | 20 |
24 | 24 | 21 | 23 | 23 | 22 | 26 | 26 | 25 | 25 | 22 | 24 | 22 | 21 | 23 | 25 | 25 | 23 | 24 | 24 | 23 | |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 9 | ESE 10 | ESE 10 | SE 10 | ESE 11 | SE 10 | ESE 10 | S 6 | S 7 | S 7 | ESE 10 | SSW 7 | ESE 9 | ESE 9 | ESE 8 | ESE 7 | SE 6 | S 5 | ESE 10 | ESE 10 |
 kJ | 71 | 86 | 88 | 133 | 160 | 143 | 157 | 130 | 101 | 104 | 86 | 117 | 77 | 180 | 288 | 226 | 158 | 88 | 29 | 55 | 55 |
Swell 2 Height (m) Direction Period (s) | SE 12 | SE 10 | SE 4 | — | — | SSE 7 | — | — | ESE 10 | ESE 10 | ESE 9 | S 6 | ESE 9 | SSW 6 | SSW 6 | S 6 | SSE 6 | ESE 8 | ESE 9 | S 5 | SSW 7 |
| kJ | 23 | 4 | 3 | — | — | 26 | — | — | 122 | 115 | 113 | 51 | 139 | 31 | 8 | 3 | 12 | 41 | 49 | 14 | 15 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 12 | SE 11 | — | — | S 9 | — | — | — | — | — | — | — | — | — | SW 6 | SW 6 | ESE 12 | ESE 12 | SSW 5 | SSE 6 |
| kJ | 4 | 6 | 31 | — | — | 2 | — | — | — | — | — | — | — | — | — | 2 | 2 | 13 | 14 | 10 | 14 |
Wind waves Height (m) Direction Period (s) | — | SE 3 | — | — | — | — | SSE 7 | SSE 6 | — | NE 3 | SSW 6 | — | E 9 | — | — | E 7 | — | — | — | — | — |
| kJ | — | 1 | — | — | — | — | 62 | 89 | — | 2 | 176 | — | 281 | — | — | 434 | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 11 | 0 | 11 | 11 | 0 | 0 | 11 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 11 | 11 | 0 | 7 | 0 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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