
Surf Forecasts:
Uchizuma surf forecast from 5 Sep 2026:
- Best quality surf: Monday 7 Sep, 9PM (local time) - 5.5ft (1.7m), 11s period, SE swell with cross-offshore winds.
- Most powerful swell: Sunday 6 Sep, 6PM (local time) - 10ft (3.0m), 11s period, ESE swell with 1,887 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 12PM (local time) - 2.5ft (0.8m), 9s 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 Saturday (Sep 05) at 12PM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.8m and 7s. 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 3.0m 11s and forecast to arrive on Sunday (Sep 06) 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 1.5m 5s period and expected on Monday (Sep 07) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sat 5th Sep) | 2.5ft (0.8m) 9s |
| Best Surf | 9PM (Mon 7th Sep) | 5.5ft (1.7m) 11s |
| Most Powerful | 6PM (Sun 6th Sep) | 10ft (3.0m) 11s |
Table - best surf conditions forecast for Uchizuma over the next 16 days.
The Lowdown
Alright, let’s get into it. It’s Rusty here, and I’ve been staring at the charts for Uchizuma, and I gotta be straight with you – it’s a bit of a mixed bag for the next couple of weeks. We’ve got a slow start, a punchy middle, and then it fades out again. Let’s walk through it.
The real story starts on Sunday the 6th. Saturday is just small and ordinary, with chest-high 3ft swell from the SSW and that light cross-off breeze. It’s surfable, sure, but nothing to get excited about. The water is sitting at 84.7°, which is a touch warmer than normal for this time of year – you’ll feel that.
Now, Sunday morning is where it gets interesting. The swell jumps to a solid 7.2ft, but it’s coming out of the ESE. That’s not the magic direction for Uchizuma; it wants SE. The energy is moderate-strong, with a reading of 719, but the wind, while cross-off, is picking up to 9 mph. By the afternoon, it’s even bigger – 9.8ft – but the wind is up to 16 mph and there’s heavy rain. This is getting into expert territory real quick. The energy reading is a big 1612, so there’s plenty of push, but those conditions are going to be challenging. For the average surfer, this is probably too much.
Monday the 7th backs off a bit, with 5.9ft swell from the SE, which is on the right track direction-wise. Still, the wave comment calls it marginal, and with a moderate breeze, it’s not going to be clean perfection. It’s got a moderate energy of 755 in the morning.
The middle of the week, from Tuesday through Thursday, drops in size and energy. We’re looking at 3.9ft to 5.6ft ranges, but the comments keep saying marginal or poor. The energy readings are in the 200–500 range, which is moderate but not exciting. It's just kind of ordinary. The swell direction is still SE/SSE, which is better, but the wind is always a bit of a cross-off, not really glassy.
Then we hit Friday the 11th. The swell drops right down to under 3ft, but something special happens: the wind goes glass for the morning. It’s light rain, but the ocean is glassy. The swell is a weak 2.6ft with a period of 8 seconds, so it’s not powerful, but if you’re desperate for a clean, fun little wave, this might be your window. The energy is a weak 102, so manage expectations.
The weekend after, the 13th and 14th, are pretty poor. Swell is tiny, 1.3ft, and the wind goes cross-shore and then cross-on. Not worth the paddle.
Now, looking ahead, there is a glimmer of hope. On Tuesday the 15th, we see a pulse of 4.9ft swell from the E, and the wind is forecast to be glass in the morning. The energy jumps to 511, which is moderate. This could be a fun little window, certainly one of the cleaner options in the second week. But it’s a week and a half out, so I’d call it promising but not a lock.
After that, it’s all downhill. The swell fades to nothing, and the energy readings drop to double and single digits. It’s a dead run. If you’re a beginner, you’ll be happy to know that anything over 5ft on Sunday will be too much for you. And when it gets over 8ft, as it does Sunday afternoon, it’s only for experts.
So, to sum it up: the standout is Sunday the 6th for size, but it’s going to be wild. The cleanest, most user-friendly option is probably Friday morning the 11th for a quick glassy session, even if the waves are small. And keep an eye on Tuesday the 15th, that could be the best all-rounder of the second week. Just remember, Uchizuma is inconsistent, so when it’s on, you gotta go.
Alright, that’s the long and short of it. Stay stoked.
Short Range ForecastHeavy rain (total 142mm), heaviest during Sun night. Warm (max 25°C on Sat morning, min 22°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Tue morning. Warm (max 26°C on Tue afternoon, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 9 | SSW 9 | E 7 | ESE 9 | ESE 10 | SE 10 | SE 10 | SE 9 | SE 10 | SE 9 | SE 9 | SE 9 | SSE 9 | SSE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 7 |
Wave Graph | |||||||||||||||||||||
138 | 106 | 248 | 705 | 1522 | 1507 | 612 | 561 | 499 | 241 | 287 | 343 | 490 | 307 | 211 | 206 | 154 | 113 | 64 | 58 | 57 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross-off |
High Tide | 1:51PM1.33m | 11:00PM1.46m | 3:35PM1.46m | 1:17AM1.44m | 4:19PM1.58m | 2:54AM1.54m | 4:52PM1.68m | 3:59AM1.68m | 5:21PM1.76m | 4:49AM1.79m | 5:47PM1.81m | 5:34AM1.87m | 6:13PM1.84m | ||||||||
Low Tide | 5:35PM1.26m | 7:28AM0.46m | 8:34PM1.23m | 8:55AM0.35m | 9:45PM1.08m | 9:55AM0.25m | 10:28PM0.91m | 10:41AM0.18m | 11:04PM0.73m | 11:20AM0.16m | 11:38PM0.57m | 11:55AM0.21m | 00:11AM0.43m | ||||||||
5:37 | — | — | 5:39 | — | — | 5:39 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:41 | — | — | |
— | 6:23 | — | — | 6:22 | — | — | 6:21 | — | — | 6:19 | — | — | 6:17 | — | — | 6:16 | — | — | 6:15 | — | |
mm | — | — | 1 | 9 | 50 | 78 | 3 | 1 | — | 1 | — | — | — | — | — | — | — | 4 | 3 | 2 | — |
Temp °C | 25 | 24 | 24 | 24 | 23 | 24 | 24 | 25 | 24 | 25 | 26 | 25 | 26 | 26 | 24 | 24 | 24 | 23 | 24 | 23 | 23 |
Feels °C | 27 | 27 | 26 | 26 | 23 | 25 | 24 | 26 | 25 | 26 | 28 | 27 | 28 | 25 | 24 | 25 | 25 | 26 | 29 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SSW 9 | ESE 7 | ESE 9 | ESE 10 | SE 10 | SE 10 | SE 9 | SE 10 | SE 9 | SE 9 | SE 9 | SSE 9 | SSE 9 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 8 | SSE 8 | SSE 7 |
138 | 106 | 108 | 705 | 1522 | 1507 | 612 | 561 | 499 | 241 | 287 | 343 | 490 | 307 | 211 | 206 | 154 | 113 | 64 | 58 | 57 | |
Swell 2 Height (m) Direction Period (s) | ESE 7 | ESE 7 | SSW 8 | SSW 9 | SSE 10 | E 10 | E 9 | S 11 | S 11 | S 10 | S 10 | S 10 | E 18 | E 18 | S 9 | E 16 | E 15 | E 15 | E 9 | SE 10 | E 7 |
62 | 70 | 57 | 8 | 82 | 988 | 139 | 21 | 112 | 146 | 117 | 122 | 6 | 6 | 6 | 5 | 4 | 17 | 24 | 14 | 8 | |
Swell 3 Height (m) Direction Period (s) | SE 9 | E 13 | E 13 | S 8 | SSW 9 | — | SW 10 | S 10 | SSW 10 | SSW 11 | — | E 19 | — | — | E 16 | — | E 18 | ESE 11 | SE 9 | E 7 | E 15 |
12 | 3 | 3 | 6 | 8 | — | 4 | 54 | 11 | 12 | — | 7 | — | — | 5 | — | 6 | 12 | 14 | 8 | 39 | |
Wind waves Height (m) Direction Period (s) | NE 3 | NE 3 | E 7 | NNE 4 | NNE 4 | NNE 5 | NNE 6 | NNE 5 | NE 5 | NE 5 | NE 4 | NNE 5 | NNE 5 | NNE 5 | NNE 5 | NNE 5 | NE 5 | NNE 4 | NNE 4 | NE 4 | NNE 4 |
5 | 3 | 248 | 7 | 21 | 125 | 114 | 50 | 79 | 55 | 29 | 15 | 42 | 48 | 86 | 46 | 25 | 8 | 7 | 13 | 7 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 23 | 57 | 43 | 43 | 15 | 0 | 43 | 43 | 0 | 0 | 43 | 43 | 43 | 0 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Shikoku | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










