Surf Forecasts:
Uchizuma surf forecast from 30 Aug 2026:
- Best quality surf: Sunday 6 Sep, 6AM (local time) - 11ft (3.5m), 9s period, ESE swell with cross-offshore winds.
- Most powerful swell: Sunday 6 Sep, 9AM (local time) - 11ft (3.5m), 9s period, ESE swell with 2,046 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 9PM (local time) - 3ft (0.9m), 7s period with SSW swell.
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 Sunday (Aug 30) at 9PM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.7m and 7s. Another secondary swell of 0.4m and 10s is also forecast. 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 3.5m 9s and forecast to arrive on Sunday (Sep 06) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Sep 05) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 30th Aug) | 3ft (0.9m) 7s |
| Best Surf | 6AM (Sun 6th Sep) | 11ft (3.5m) 9s |
| Most Powerful | 9AM (Sun 6th Sep) | 11ft (3.5m) 9s |
Table - best surf conditions forecast for Uchizuma over the next 16 days.
The Lowdown
Alright, let me break this down for Uchizuma. This spot is a beginner-friendly wave, but it’s inconsistent and only breaks sometimes. The water’s sitting at about 84°F, which is a touch warmer than normal for this time of year – nothing crazy, just a little extra warmth.
Right now we’ve got a bit of surf on the table, but nothing to write home about. Sunday morning the 30th has some small 3-ft SSW swell with a short 7-second period, and it’s glassy. It’s rideable but pretty ordinary. That afternoon and the next several days are mostly poor – small, weak, and cross-onshore or onshore winds. We’re looking at a stretch of very average conditions through the first week.
The first real standout comes Monday the 7th of September morning. The swell jumps to 7-ft from ESE, period 10 seconds, and it’s glassy – dead calm wind. That’s excellent surf for experienced surfers. The combined energy is up at 1569 – solid moderate-to-strong. If you can handle a bit of size, this is the window.
Tuesday the 8th morning is also prime: 7-ft ESE, 12-second period, glassy again. Combined energy 1416. Clean, solid, and powerful. Expect very good conditions.
Wednesday the 9th morning is another good one – 6-ft SSE swell with a 14-second period, light offshore breeze from NNE. That’s a clean, long-period groundswell. Energy 1796. It’s a bit smaller but still quality. The long period might make the sets a bit walled up at this beach, but with offshore wind it should hold shape.
Thursday the 10th morning and afternoon see the swell absolutely pumping – 16-ft and 18-ft SE with 15-second period. That’s huge – combined energy over 11000 – but it’s way too big for Uchizuma. Only for the most experienced and even then risky. Winds are offshore, but the size rules out most surfers.
After that, Friday the 11th drops back to small and marginal, and from the 12th onward it’s pretty much done – strong winds, onshores, and tiny swell. The last few days are completely blown out with gale-force winds.
So to sum it up: you’ve got a pretty flat start, then Monday Tuesday Wednesday in early September are your best shots. Mark those dates – the 7th, 8th, and 9th mornings. Crowds can show up sometimes, so get in early.
Rusty
Short Range ForecastLight rain (total 8mm), mostly falling on Sun afternoon. Warm (max 31°C on Mon morning, min 25°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Wed morning. Warm (max 29°C on Wed afternoon, min 24°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 7 | S 9 | S 8 | SE 10 | ESE 13 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 10 | SSW 9 | SE 8 | SSW 9 | SSW 11 | SSW 11 | ESE 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 114 | 71 | 76 | 73 | 51 | 31 | 59 | 55 | 94 | 140 | 217 | 172 | 130 | 99 | 170 | 138 | 206 | 147 | 170 | 133 | 586 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | cross-on | cross-on | cross | on | on | glassy | on | on | glassy | cross-on | glassy | glassy | cross-off | cross | cross-off | cross-off | cross-off | cross |
High Tide | 7:14PM1.82m | 7:26AM1.80m | 7:38PM1.81m | 8:07AM1.73m | 8:03PM1.78m | 8:53AM1.61m | 8:30PM1.72m | 9:51AM1.47m | 9:02PM1.65m | 11:18AM1.35m | 9:43PM1.56m | 1:51PM1.33m | 11:00PM1.46m | ||||||||
Low Tide | 1:02PM0.31m | 1:19AM0.40m | 1:31PM0.43m | 1:53AM0.35m | 2:01PM0.58m | 2:31AM0.33m | 2:32PM0.75m | 3:16AM0.36m | 3:06PM0.93m | 4:13AM0.42m | 3:51PM1.11m | 5:37AM0.48m | 5:35PM1.26m | ||||||||
 |  |  |  | |  | | |  | |  |  | | | | | | | |  |  | |
 | 5:33 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — |
 | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | — | 6:25 | — | — | 6:24 | — | — | 6:23 | — |
mm | 1 | 3 | 1 | — | — | — | — | — | 3 | 3 | — | — | 2 | 2 | 3 | 1 | 2 | — | 2 | 7 | 10 |
Temp °C | 30 | 30 | 27 | 31 | 30 | 26 | 30 | 30 | 26 | 28 | 29 | 26 | 28 | 28 | 26 | 29 | 28 | 26 | 28 | 26 | 24 |
Feels °C | 36 | 35 | 31 | 34 | 33 | 30 | 32 | 33 | 31 | 32 | 32 | 31 | 33 | 34 | 32 | 32 | 31 | 30 | 31 | 29 | 26 |
Swell 1 Height (m) Direction Period (s) | S 7 | SE 10 | S 7 | S 9 | S 8 | S 8 | S 8 | S 8 | SSE 8 | SSE 8 | E 11 | SSE 8 | SSE 8 | SSE 8 | SSW 10 | SSW 9 | ESE 8 | ESE 8 | SSW 11 | SSW 11 | ESE 9 |
| kJ | 70 | 37 | 51 | 73 | 51 | 31 | 33 | 55 | 94 | 140 | 59 | 172 | 130 | 99 | 170 | 138 | 126 | 147 | 170 | 133 | 586 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SW 11 | SE 10 | SE 10 | SE 10 | SSW 9 | ESE 13 | ESE 12 | E 12 | E 11 | SE 11 | E 11 | ESE 10 | ESE 8 | ESE 8 | ESE 8 | SSW 9 | SSW 9 | SE 9 | ESE 8 | SSE 16 |
| kJ | 17 | 4 | 38 | 25 | 25 | 31 | 59 | 52 | 70 | 61 | 18 | 57 | 34 | 21 | 58 | 92 | 94 | 111 | 77 | 55 | 452 |
Swell 3 Height (m) Direction Period (s) | ESE 10 | E 11 | SW 9 | E 10 | SSW 10 | SE 10 | SE 9 | SE 9 | SE 10 | SE 9 | S 14 | SE 10 | SE 10 | SW 12 | SE 10 | NE 3 | S 8 | E 10 | SE 16 | SE 15 | SSW 10 |
| kJ | 9 | 2 | 3 | 2 | 10 | 23 | 23 | 22 | 14 | 14 | 4 | 17 | 16 | 39 | 15 | 2 | 46 | 29 | 10 | 60 | 57 |
Wind waves Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 7 | SW 4 | SSW 3 | — | — | — | — | — | SSE 8 | ENE 4 | — | — | NNE 2 | — | SE 8 | — | NNE 4 | NNE 4 | — |
| kJ | 114 | 71 | 76 | 5 | 1 | — | — | — | — | — | 217 | 3 | — | — | 1 | — | 206 | — | 13 | 21 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 15 | 0 | 11 | 31 | 2 | 5 | 474 | 0 | 11 | 581 | 0 | 19 | 0 | 0 | 0 | 21 | 0 | 0 | 0 | 19 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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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 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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