Surf Forecasts:
Shida surf forecast from 4 Sep 2026:
- Best quality surf: Monday 7 Sep, 3AM (local time) - 10ft (3.0m), 8s period, ESE swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 12PM (local time) - 13ft (4.0m), 11s period, SSE swell with 3,745 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 3AM (local time) - 10ft (3.0m), 8s period with ESE swell.
Best Forecast Surf Conditions for Shida this week:
The surf forecast for Shida over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 3AM. The primary swell is predicted to be 3.0m and 8s period with a secondary swell of 1.5m and 11s. Another secondary swell of 1.1m and 9s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Shida in the next 16 days are 4.0m 11s and forecast to arrive on Monday (Sep 07) at 12PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 12s period and expected on Monday (Sep 07) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 7th Sep) | 10ft (3.0m) 8s |
| Best Surf | 3AM (Mon 7th Sep) | 10ft (3.0m) 8s |
| Most Powerful | 12PM (Mon 7th Sep) | 13ft (4.0m) 11s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, let me give it to you straight about Shida.
Right now, through this weekend and into next week, it’s looking pretty poor. Mixed up swell and a lot of wind blowing onshore, making a mess. Not worth the drive.
Monday the 7th of September is a wild card. A massive SSE groundswell hits us at around 11 to 12 feet, with some serious power (energy readings in the thousands). The wind will be offshore, and Tuesday morning it goes flat calm. The surface would be perfect. But the problem is the size—over 8 feet is for experts only. That’s too much for this break, even though the period is long (11 seconds), which means big, powerful sets. It’s not for the average surfer.
After that, the swell drops fast. Wednesday the 9th is marginal, and then we hit a dry spell. From the 10th through the 11th of September, there’s nothing decent. The swell is tiny, wind is onshore, and the energy is zapped.
Your best bet rolls in on Saturday the 12th and Sunday the 13th of September. The waves are small—only 2 to 3 feet—but the quality is there. The swell comes from the ESE with a period up to 14 seconds, which is a nice long groundswell. On a beach break like this, those long-period waves can be a bit straight, but with glassy conditions early Saturday and light offshore winds from the south on Sunday morning, it’ll be clean and fun. The energy is moderate (around 250-362), so it will be a slower, mellow session. Grab a longboard or a fish. The water is about 80°, which is normal for this time of year.
If I had to pick one standout, go for Sunday morning the 13th. It’s the cleanest, calmest window with the best chance for a fun, user-friendly wave. Crowds can pop up at Shida, so you might have some company.
Later in the second week, from the 16th onward, we see a little kick from the south again, but it’s inconsistent and the wind stays messy. Nothing that really flashes.
Rusty.
Short Range ForecastHeavy rain (total 183mm), heaviest during Sun night. Warm (max 27°C on Mon morning, min 21°C on Sat morning). Winds increasing (light winds from the ENE on Fri afternoon, strong winds from the S by Mon morning). | Days 5-7 Weather SummaryHeavy rain (total 75mm), heaviest during Wed afternoon. Warm (max 28°C on Mon afternoon, min 20°C on Thu morning). Winds decreasing (fresh winds from the SSW on Mon afternoon, calm by Tue morning). | |||||||||||||||||||
Fri 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | ||||||||||||||
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) | S 10 | S 9 | E 6 | E 6 | E 6 | ENE 7 | ENE 7 | E 8 | SSE 9 | SSE 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 | ENE 7 | ENE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 70 | 61 | 200 | 109 | 132 | 374 | 489 | 816 | 2249 | 2588 | 2973 | 2137 | 1509 | 1601 | 1102 | 891 | 449 | 239 | 310 | 210 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-off | off | off | cross-off | glassy | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 7:36PM1.42m | 8:18PM1.36m | 3:35PM1.23m | 9:56PM1.28m | 3:22PM1.30m | 00:17AM1.28m | 3:37PM1.35m | 1:44AM1.35m | 3:56PM1.40m | 2:47AM1.42m | 4:15PM1.43m | |||||||||
Low Tide | 3:57AM0.35m | 5:37AM0.34m | 5:38PM1.22m | 7:05AM0.27m | 7:55PM1.13m | 8:07AM0.21m | 8:42PM0.99m | 8:55AM0.18m | 9:19PM0.83m | 9:35AM0.19m | 9:53PM0.67m | |||||||||
 |  |  |  |  | |  | |  | | | | |  | | |  | | | | |
 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — |
 | 6:01 | — | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — | — | 5:57 | — | — | 5:54 | — | — | 5:53 | — |
mm | 1 | 23 | 6 | 2 | 2 | 4 | 18 | 97 | 30 | 4 | 5 | 7 | 2 | 11 | 21 | 20 | 1 | 4 | 5 | 17 |
Temp °C | 25 | 23 | 22 | 22 | 23 | 23 | 23 | 26 | 27 | 28 | 27 | 25 | 23 | 25 | 22 | 23 | 23 | 22 | 20 | 19 |
Feels °C | 27 | 24 | 21 | 20 | 21 | 19 | 22 | 25 | 27 | 28 | 27 | 30 | 25 | 28 | 24 | 24 | 23 | 19 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | SE 6 | S 9 | S 10 | SSW 9 | SSW 8 | SSW 9 | S 8 | S 9 | ENE 9 | E 9 | SSE 11 | SSE 10 | SSE 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 8 |
| kJ | 38 | 61 | 47 | 28 | 23 | 7 | 29 | 103 | 464 | 335 | 2130 | 1322 | 1064 | 1183 | 1102 | 891 | 449 | 230 | 119 | 84 |
Swell 2 Height (m) Direction Period (s) | S 10 | E 9 | ENE 13 | ENE 13 | E 12 | SSE 8 | SE 12 | S 11 | ESE 8 | — | E 9 | E 8 | E 8 | E 18 | E 17 | E 16 | ESE 16 | ESE 15 | ESE 14 | ESE 14 |
| kJ | 70 | 41 | 34 | 33 | 11 | 7 | 5 | 123 | 191 | — | 129 | 47 | 37 | 6 | 23 | 21 | 48 | 43 | 70 | 68 |
Swell 3 Height (m) Direction Period (s) | E 9 | SE 6 | SSE 9 | SE 9 | SSE 8 | SE 12 | SE 14 | — | — | — | — | NE 11 | E 19 | E 18 | E 9 | E 9 | SE 11 | SE 11 | ESE 11 | SE 10 |
| kJ | 41 | 19 | 8 | 12 | 7 | 6 | 8 | — | — | — | — | 4 | 7 | 25 | 15 | 15 | 5 | 5 | 11 | 15 |
Wind waves Height (m) Direction Period (s) | ESE 6 | ENE 4 | E 6 | E 6 | E 6 | ENE 7 | ENE 7 | E 8 | SSE 9 | SSE 11 | S 11 | S 10 | S 10 | S 10 | NE 8 | NE 5 | NE 6 | ENE 6 | ENE 7 | ENE 7 |
| kJ | 34 | 34 | 200 | 109 | 132 | 374 | 489 | 816 | 2249 | 2588 | 2973 | 2137 | 1509 | 1601 | 35 | 57 | 105 | 239 | 310 | 210 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 17 | 63 | 216 | 70 | 544 | 626 | 626 | 626 | 87 | 208 | 91 | 1 | 17 | 17 | 3 | 17 | 63 | 63 | 561 | 85 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
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Information about the Shida Surf forecast
The above surf forecast table for Shida provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Shida can be found by selecting the local surf guide option on the grey menu. Our Shida 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 (Shida) 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 Shida 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.
Shida is 9 km (6 miles) from the city of Ohara. If you plan a holiday in Chiba, look for hotels and other accommodation in Ohara. Ohara has rooms for a wide range of budgets as well as car hire and transport links.
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