Surf Forecasts:
Shida surf forecast from 3 Sep 2026:
- Best quality surf: Monday 7 Sep, 3AM (local time) - 10ft (3.0m), 9s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 12PM (local time) - 13ft (4.0m), 11s period, S swell with 3,236 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 12AM (local time) - 2ft (0.6m), 10s period with E 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 Friday (Sep 04) at 12AM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.8m and 4s. 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 Tuesday (Sep 08) at 12PM. Winds are predicted to be cross-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 Thursday (Sep 03) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 4th Sep) | 2ft (0.6m) 10s |
| Best Surf | 3AM (Mon 7th Sep) | 10ft (3.0m) 9s |
| Most Powerful | 12PM (Tue 8th Sep) | 13ft (4.0m) 11s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s keep it real – Shida is the only spot we’ve got, and this 16-day run is a mixed bag. Water temp is about 78°, a little colder than usual for this time of year.
Thursday the 3rd starts small with a 2ft east swell, period around 10 seconds. Wave energy is moderate (252). A cross-off breeze keeps it clean, but the forecast is marginal – I’d stay on the sand.
Friday the 4th and Saturday the 5th are poor. Light cross-onshore winds and small, choppy surf. Saturday bumps up to 4ft but with a short 6-second period and onshore wind. Skip it.
Sunday the 6th gets messy. The swell hits 8ft from the ENE, but a strong cross-onshore wind at 25 mph is going to chop it to bits. That’s 626 of energy – lots of water, but not for paddling. Kite surfers might have a look.
Monday the 7th is wind-affected with 8ft east swell, period 8 seconds (776 energy). Tuesday the 8th is massive: 13ft south swell, 10-second period, and a huge 6273 energy reading. Cross-off winds keep it clean, but the forecast says it’s too big for this break. Experts only, and even then, it’s risky.
Wednesday the 9th is a standout. Offshore winds from the south at 19 mph, clean faces on an 8ft SSE swell, period 9 seconds, energy at 1076. That’s a powerful, clean wave, but be ready for a fight paddling in. Crowds at Shida are likely.
Thursday the 10th drops to 7ft, still clean. The energy is 793 – still solid.
Now, the real gem. Friday the 11th morning: 4ft south swell, but the wind is glassy – dead calm. Period is 8 seconds, 371 energy. Glassy conditions with a waist-high wave at Shida is the session to aim for. The afternoon stays glassy, so the whole day is on.
The next week is patchy. Saturday the 12th and Sunday the 13th are mostly poor. But Monday the 14th afternoon: 4ft SE swell, zero wind, glassy. Energy at 381. Clean, lined-up waves.
The second week’s best is Thursday the 17th morning: 5ft south swell, long 11-second period (602 energy), glassy. This is a proper groundswell – clean, holding sets, the best of the long-range.
Friday the 18th fades with a smaller SSW swell and short 6-second period. Clean-ish, but not much power.
So, the takeaway: there are big gaps. Circle Friday the 11th, Monday the 14th afternoon, and Thursday the 17th morning. Those glassy windows are your best shots.
Rusty.
Short Range ForecastHeavy rain (total 89mm), heaviest during Fri night. Warm (max 29°C on Thu afternoon, min 20°C on Fri night). Winds increasing (light winds from the SE on Thu night, strong winds from the NE by Sun morning). | Days 5-7 Weather SummaryHeavy rain (total 205mm), heaviest during Sun night. Warm (max 28°C on Tue morning, min 23°C on Sun afternoon). Winds decreasing (strong winds from the SSE on Mon afternoon, light winds from the SSW by Tue afternoon). | |||||||||||||||||||
Thu 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | ||||||||||||||
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) | E 10 | E 10 | S 10 | S 10 | S 9 | E 6 | E 6 | ENE 6 | ENE 7 | ENE 8 | E 9 | E 9 | E 9 | SSE 9 | SSE 11 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 10 |
Wave Graph  | ||||||||||||||||||||
 kJ | 71 | 68 | 73 | 70 | 61 | 127 | 162 | 303 | 571 | 1156 | 1493 | 702 | 463 | 1043 | 2353 | 2165 | 1019 | 658 | 845 | 1022 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | on |
High Tide | 7:06PM1.46m | 10:01AM1.07m | 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 | ||||||||
Low Tide | 2:39AM0.32m | 1:15PM1.01m | 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 | |||||||||
 |  |  |  |  |  | |  | | | | | |  | | | | | | | |
 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — |
 | 6:04 | — | — | 6:01 | — | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — | — | 5:57 | — | — | 5:54 | — |
mm | 3 | 1 | 1 | — | 68 | 10 | 1 | 2 | 3 | 2 | 106 | 19 | 28 | 34 | — | 1 | 11 | 4 | 4 | 21 |
Temp °C | 29 | 24 | 25 | 25 | 23 | 21 | 22 | 23 | 23 | 24 | 25 | 26 | 27 | 27 | 28 | 26 | 27 | 28 | 28 | 28 |
Feels °C | 31 | 25 | 27 | 27 | 23 | 19 | 19 | 20 | 20 | 20 | 25 | 25 | 24 | 27 | 28 | 29 | 30 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | E 10 | ENE 4 | SE 6 | S 10 | S 9 | S 10 | SSW 9 | SSW 8 | SSW 9 | S 8 | SSW 10 | E 9 | E 9 | SSE 9 | SSE 11 | SSE 10 | SSE 10 | SSE 9 | E 16 | SSE 10 |
| kJ | 71 | 23 | 39 | 70 | 61 | 47 | 28 | 14 | 8 | 12 | 10 | 702 | 463 | 1043 | 2353 | 2165 | 1019 | 658 | 20 | 1022 |
Swell 2 Height (m) Direction Period (s) | SSW 8 | E 10 | S 10 | E 9 | SE 7 | E 9 | ENE 13 | SE 12 | S 8 | — | — | SSE 8 | SSE 8 | ENE 9 | ENE 9 | E 9 | NE 7 | NNE 6 | NNE 7 | E 15 |
| kJ | 24 | 68 | 73 | 58 | 27 | 25 | 33 | 6 | 5 | — | — | 120 | 264 | 222 | 80 | 39 | 7 | 4 | 5 | 18 |
Swell 3 Height (m) Direction Period (s) | E 6 | S 8 | E 9 | SE 6 | E 9 | SE 9 | SE 9 | SW 9 | SE 12 | — | — | SE 11 | E 18 | E 18 | — | NNE 7 | E 18 | E 16 | NNE 7 | NNE 7 |
| kJ | 13 | 35 | 41 | 25 | 41 | 12 | 12 | 3 | 6 | — | — | 30 | 6 | 6 | — | 18 | 6 | 21 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | S 4 | — | NE 4 | — | NE 3 | E 6 | E 6 | ENE 6 | ENE 7 | ENE 8 | E 9 | WNW 3 | NNE 3 | — | — | — | — | — | SSE 9 | NNE 4 |
| kJ | 15 | — | 5 | — | 2 | 127 | 162 | 303 | 571 | 1156 | 1493 | 8 | 4 | — | — | — | — | — | 845 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 153 | 0 | 3 | 17 | 63 | 63 | 216 | 626 | 544 | 544 | 544 | 63 | 216 | 104 | 91 | 1 | 0 | 208 | 586 | 17 |
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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