
Surf Forecasts:
Uchizuma surf forecast from 28 Jul 2026:
- Best quality surf: Tuesday 4 Aug, 3PM (local time) - 11ft (3.5m), 18s period, ESE swell with onshore winds.
- Most powerful swell: Tuesday 4 Aug, 3PM (local time) - 11ft (3.5m), 18s period, ESE swell with 6,641 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 6PM (local time) - 1.5ft (0.5m), 10s period with SE 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 Tuesday (Jul 28) at 6PM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.4m and 8s. Another secondary swell of 0.9m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Uchizuma in the next 16 days are 3.5m 18s and forecast to arrive on Tuesday (Aug 04) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Aug 02) at 9AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Tue 28th Jul) | 1.5ft (0.5m) 10s |
| Best Surf | 3PM (Tue 4th Aug) | 11ft (3.5m) 18s |
| Most Powerful | 3PM (Tue 4th Aug) | 11ft (3.5m) 18s |
Table - best surf conditions forecast for Uchizuma over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the menu for Uchizuma over the next couple of weeks. It’s a bit of a slow burner, but there’s a serious pulse of energy coming later on if you can wait.
The first few days are a tough watch. We’ve got tiny, weak swell and not much push. The water is sitting at 82.8°, which is a touch warmer than usual for this time of year – nothing extreme, just a nice little blanket of warm. For Tuesday the 28th of July, the morning is glassy and clean with a tiny 1.6 ft SE swell, but the energy is weak (115). It’s surfable if you’re desperate, but it’s not going to get the heart pumping. The afternoon gets a bit messy with a light cross-on wind. Wednesday the 29th is glassy again, but still only 1.6 ft and very low energy. Thursday and Friday are even smaller, with some glassy windows but the swell is barely there. The first weekend of August is just as quiet – tiny, inconsistent waves that are barely breaking. This is a real flat spell.
Then, things start to shift. On Sunday the 2nd of August, we see a jump in period to 16 seconds, which is a proper groundswell, and the energy starts climbing to 365. The swell is still small (3 ft) and the wind is onshore, so it’s messy. But it’s a sign of life.
Now, here’s where it gets interesting. Monday the 3rd of August, the morning looks like a real standout. We’ve got a 4.6 ft ESE swell with a 15-second period, and the combined energy jumps to 939 – that’s a solid, moderate push. The wind is glassy, dead calm, so the surface will be clean as a whistle. This is the best session on offer for the average surfer. The swell is solid, the period is long, and the conditions are pristine. Uchizuma is an inconsistent, beginner-friendly spot, but this morning will offer some proper, fun waves. The wind is offshore from the NE on the 5th, but by then the swell is cranked up to 16.4 ft – that’s huge. That’s expert-only territory, and the energy reading is off the charts at 16880. It’s a monster, but it’s too big for this break. The 4th of August also sees a big 8.2 ft to 11.5 ft swell, but the wind is onshore and the readings say it’s too big for the spot.
So, the clear winner is the morning of Monday the 3rd of August. The 4.6 ft ESE swell, long 15-second period, and glassy conditions will give you the best chance of a clean, fun session. Take it. The 10th of August afternoon also looks promising with a glassy 5.6 ft, but the period is short (7 seconds) and the energy is lower.
The second week gets messy. Strong winds and big, disorganized swell from the 7th onward make for poor conditions. A lot of that is blown out and choppy, unless you’re into kite surfing. The 11th and 12th have some size (7.5 ft to 9.8 ft) with clean offshore winds, but the swell is short-period and the energy is moderate. It’s worth a look if you’re hungry, but the Monday morning session is the one to circle.
Short Range ForecastSome drizzle, heaviest during Wed morning. Warm (max 33°C on Tue morning, min 27°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 33°C on Fri morning, min 27°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | |||||||||||||||
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) | SE 10 | SSW 8 | SE 10 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 9 | SE 13 | SE 11 | SE 10 | SE 11 | SE 11 | ESE 16 | ESE 16 | ESE 15 | ESE 15 | ESE 17 | ESE 18 |
Wave Graph | |||||||||||||||||||||
49 | 99 | 48 | 48 | 48 | 38 | 23 | 23 | 23 | 24 | 26 | 20 | 28 | 29 | 41 | 144 | 348 | 653 | 890 | 1728 | 2888 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | off | glassy | glassy | cross-off | glassy | cross-on | off | glassy | cross-on | off | glassy | on | glassy | cross | on | glassy | glassy | cross-on | glassy |
High Tide | 6:20PM1.64m | 5:10AM1.68m | 6:46PM1.68m | 5:48AM1.74m | 7:11PM1.71m | 6:24AM1.77m | 7:36PM1.73m | 7:00AM1.77m | 8:00PM1.74m | 7:37AM1.73m | 8:25PM1.74m | 8:17AM1.67m | 8:51PM1.72m | ||||||||
Low Tide | 11:27AM0.23m | 11:43PM0.96m | 12:00PM0.17m | 00:13AM0.89m | 12:32PM0.15m | 00:44AM0.81m | 1:02PM0.16m | 1:15AM0.74m | 1:31PM0.21m | 1:47AM0.67m | 2:00PM0.31m | 2:22AM0.61m | 2:31PM0.44m | ||||||||
5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | |
— | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | 1 |
Temp °C | 33 | 33 | 29 | 30 | 33 | 29 | 33 | 32 | 29 | 33 | 33 | 29 | 33 | 32 | 29 | 32 | 32 | 28 | 31 | 30 | 27 |
Feels °C | 36 | 37 | 33 | 35 | 37 | 33 | 36 | 35 | 33 | 36 | 36 | 32 | 36 | 36 | 33 | 35 | 36 | 33 | 35 | 34 | 33 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 10 | SSW 6 | SSW 6 | SE 10 | SSW 6 | SE 10 | SE 10 | SE 10 | SE 9 | SE 9 | SE 10 | SE 10 | SE 11 | SE 11 | ESE 16 | ESE 16 | ESE 15 | ESE 15 | ESE 17 | ESE 18 |
49 | 49 | 46 | 17 | 48 | 12 | 23 | 23 | 23 | 23 | 21 | 14 | 28 | 29 | 41 | 144 | 348 | 653 | 890 | 1728 | 2888 | |
Swell 2 Height (m) Direction Period (s) | S 8 | SE 13 | SE 10 | SE 10 | SSW 6 | ESE 10 | SSW 5 | SSW 8 | SSW 5 | SSW 4 | SE 13 | SE 11 | SW 4 | ESE 15 | ESE 14 | ESE 9 | SE 9 | SE 10 | ESE 6 | S 8 | ESE 6 |
36 | 28 | 48 | 48 | 12 | 38 | 5 | 6 | 2 | 2 | 26 | 20 | 1 | 22 | 20 | 15 | 14 | 15 | 34 | 5 | 57 | |
Swell 3 Height (m) Direction Period (s) | SE 14 | SE 13 | SE 13 | SSW 8 | SSW 8 | SSW 7 | SSW 8 | SSW 4 | SSW 7 | SE 12 | SSW 4 | S 7 | S 7 | — | ESE 17 | SSE 9 | S 9 | S 8 | SE 10 | S 8 | — |
29 | 27 | 27 | 21 | 19 | 10 | 11 | 2 | 5 | 24 | 2 | 4 | 1 | — | 30 | 9 | 1 | 5 | 15 | 5 | — | |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 8 | — | — | SW 5 | — | — | — | — | NNE 3 | NE 3 | — | NNE 3 | — | — | NNE 3 | E 3 | E 5 | — | ESE 5 | — |
1 | 99 | — | — | 35 | — | — | — | — | 1 | 2 | — | 1 | — | — | 2 | 2 | 23 | — | 46 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 11 | 0 | 0 | 0 | 0 | 31 | 459 | 43 | 2 | 575 | 558 | 2485 | 21 | 0 | 40 | 19 | 0 | 0 | 385 | 0 |
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.










