
Surf Forecasts:
Uchizuma surf forecast from 21 Jul 2026:
- Best quality surf: Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s period, SE swell with offshore winds.
- Most powerful swell: Saturday 25 Jul, 3AM (local time) - 1.5ft (0.4m), 16s period, SE swell with 94 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 12AM (local time) - 1ft (0.3m), 18s 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 Friday (Jul 24) at 12AM. The primary swell is predicted to be 0.3m and 18s period with a secondary swell of 0.3m and 10s. Another secondary swell of 0.3m and 3s is also forecast. Another secondary swell of 0.5m and 4s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Uchizuma in the next 16 days are 0.4m 16s and forecast to arrive on Saturday (Jul 25) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Jul 25) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Best Surf | 12AM (Fri 24th Jul) | 1ft (0.3m) 18s |
| Most Powerful | 3AM (Sat 25th Jul) | 1.5ft (0.4m) 16s |
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 the next couple of weeks. Uchizuma is the only break on the radar, and it’s a bit of a tease. We’re starting with a long stretch of nothing really worth paddling out for. The first week and a half is mostly flat, tiny, or just messy. The first real glimmer of hope doesn’t show up until the morning of the 1st of August. So, we’re looking at a solid 10-day gap from now with no real surf to speak of. Then, when it does arrive, it comes in with a bang, but it’s a tricky one.
The early days are a tough watch. From Tuesday the 21st right through to the end of July, swell is tiny—mostly 1 ft to 1 ft, occasionally hitting 3 ft, but the wind is often cross-on or onshore, and the energy is weak (combined energy values in the 30s to 200s). There are a few glassy mornings, like Thursday the 23rd and Friday the 24th, but the swell is so small it’s barely a ripple. The standout decent energy doesn’t kick in until the very end of the month.
The real action, and the only true standout, is Saturday the 1st of August. The morning session is the pick of the entire forecast. We’re looking at a clean 4 ft SE swell with a solid 13-second period pushing in. The wind is a light, cross-offshore breeze from the NE at 6 mph, which is going to put a nice face on those waves. The combined energy rockets up to 901 (moderate), so there’s some proper juice in the water. This is a point break or reef-friendly groundswell, and with that offshore wind, Uchizuma should be offering up some clean, lined-up walls. The afternoon on the 1st gets a bit bigger—6 ft SSE—but the wind picks up to 12 mph, making it a bit more on the edge of messy. Still, that morning is the one to circle.
Now, the caveat. Uchizuma is an inconsistent spot, so the fact we’re getting a window like this is notable. It breaks fairly exposed to the swell, and the optimum direction is SE, so the 1st of August swell is hitting it right on the money. The downside? It’s a beginner-friendly break, but that 4 ft swell is just about right for intermediates. When it gets over 8 ft later on, it’s only for the experts.
After that one golden morning, it gets ugly. From Sunday the 2nd of August onward, the swell keeps building—8 ft, 8 ft, 10 ft, even 10 ft with a 15-second period on the 3rd—but the wind turns nasty. A strong ESE wind at 22–25 mph creates a cross-on, choppy, lumpy mess. The combined energy is massive (values in the 2000s and 4000s), but it’s all blown out. The water temp is sitting at 82°, which is about 2° warmer than normal for this time of year, so you’ll be in boardshorts and a rashie even in the messy stuff.
So, to sum it up: the first week and a half is a write-off. The only true standout is the morning of Saturday the 1st of August. Get on it if you can, because after that, it’s a windy, oversized mess that’s more for kite surfers than paddle surfers. The setup on the 2nd, 3rd, and 4th—with strong cross-on winds and big, long-period swell—is a classic kite-scooting scenario.
Stay patient, and keep an eye on that Saturday morning.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Thu afternoon. Warm (max 32°C on Thu afternoon, min 27°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 23mm), heaviest during Sun afternoon. Warm (max 32°C on Sat morning, min 26°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Tue 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | ||||||||||||||
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) | ESE 11 | ESE 11 | ESE 11 | ESE 10 | ESE 11 | SE 10 | SE 10 | SE 18 | SE 18 | SE 18 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 |
Wave Graph | ||||||||||||||||||||
23 | 22 | 22 | 11 | 11 | 25 | 25 | 50 | 49 | 49 | 42 | 91 | 90 | 87 | 78 | 76 | 74 | 72 | 70 | 65 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-off | glassy | cross-on | off | glassy | cross-on | off | glassy | glassy | glassy | on | on | glassy | glassy | cross-on | cross-off |
High Tide | 10:42PM1.56m | 12:10PM1.25m | 11:21PM1.50m | 2:11PM1.24m | 00:16AM1.45m | 3:54PM1.32m | 1:31AM1.43m | 4:48PM1.42m | 2:45AM1.46m | 5:23PM1.50m | 3:43AM1.52m | 5:52PM1.58m | ||||||||
Low Tide | 4:20PM0.84m | 5:41AM0.66m | 5:01PM1.01m | 6:53AM0.64m | 6:12PM1.14m | 8:11AM0.59m | 8:12PM1.20m | 9:17AM0.51m | 9:41PM1.17m | 10:08AM0.41m | 10:33PM1.11m | 10:50AM0.32m | 11:10PM1.04m | |||||||
— | — | 5:07 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | |
7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | |
mm | 2 | — | 1 | 1 | — | 1 | 3 | 2 | 1 | 3 | 1 | — | 4 | — | 2 | 8 | 4 | 1 | 5 | 1 |
Temp °C | 31 | 28 | 31 | 31 | 28 | 31 | 32 | 28 | 32 | 31 | 29 | 32 | 32 | 28 | 30 | 29 | 27 | 31 | 29 | 27 |
Feels °C | 35 | 33 | 37 | 36 | 33 | 37 | 37 | 33 | 37 | 36 | 34 | 36 | 37 | 33 | 35 | 34 | 32 | 35 | 33 | 32 |
Swell 1 Height (m) Direction Period (s) | ESE 11 | ESE 11 | ESE 11 | ESE 10 | ESE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 18 | SE 11 | SE 11 | SE 10 | SE 10 | SE 10 | SE 11 | S 9 | S 8 | S 8 | S 8 |
23 | 22 | 22 | 11 | 11 | 25 | 25 | 16 | 23 | 49 | 41 | 40 | 50 | 48 | 50 | 55 | 38 | 34 | 50 | 51 | |
Swell 2 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSW 4 | SE 19 | SW 3 | SE 18 | SE 9 | SE 16 | SE 16 | SE 16 | SE 16 | SE 15 | S 10 | SE 11 | SE 10 | SE 10 | SE 10 |
6 | 6 | 6 | 6 | 6 | 2 | 15 | 1 | 49 | 14 | 42 | 91 | 90 | 87 | 78 | 29 | 40 | 51 | 50 | 50 | |
Swell 3 Height (m) Direction Period (s) | ESE 6 | SE 6 | SSW 3 | S 7 | SE 11 | SE 20 | S 8 | SE 18 | SSW 4 | ESE 11 | SSW 4 | SSW 8 | S 8 | S 7 | S 9 | SE 15 | SE 14 | SE 14 | SE 14 | SE 14 |
4 | 2 | 1 | 1 | 4 | 15 | 5 | 50 | 1 | 13 | 2 | 6 | 5 | 9 | 26 | 76 | 74 | 72 | 70 | 65 | |
Wind waves Height (m) Direction Period (s) | SW 2 | SW 3 | SW 3 | SSW 3 | SW 3 | — | SSW 4 | SW 4 | SE 7 | SSW 4 | SW 4 | N 3 | NNE 3 | WSW 3 | — | — | — | E 6 | — | — |
2 | 1 | 3 | 1 | 3 | — | 2 | 6 | 2 | 1 | 4 | 1 | 2 | 2 | — | — | — | 1 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 954 | 31 | 31 | 968 | 290 | 7 | 459 | 0 | 0 | 11 | 0 | 0 | 0 | 0 | 15 | 11 | 0 | 0 | 11 | 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.










