Surf Forecasts:
Shida surf forecast from 14 Sep 2026:
- Best quality surf: Saturday 19 Sep, 3PM (local time) - 11ft (3.5m), 13s period, SE swell with cross-onshore winds.
- Most powerful swell: Saturday 19 Sep, 3AM (local time) - 10ft (3.0m), 14s period, SE swell with 3,420 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 9AM (local time) - 2.5ft (0.7m), 14s 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 Tuesday (Sep 15) at 9AM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.7m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Shida in the next 16 days are 3.0m 14s and forecast to arrive on Saturday (Sep 19) at 3AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 9s period and expected on Sunday (Sep 20) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Tue 15th Sep) | 2.5ft (0.7m) 14s |
| Best Surf | 3PM (Sat 19th Sep) | 11ft (3.5m) 13s |
| Most Powerful | 3AM (Sat 19th Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down Shida for the next couple weeks. It’s a rough start, but there are a couple of moments that’ll get the heart pumping.
The pattern starts with a little hope. Tuesday the 15th, we’ve got a 4ft SE swell running with an 8-second period and a moderate offshore breeze, so it’s clean. The energy reading is 406, which is decent. But this break is *inconsistent* and you can usually expect a crowd here. That window is tiny though, because from Wednesday morning the 16th, it all goes south. Onshore winds and lumpy conditions move in and stay put. Swell builds, but the wind from the NNE just ruins it through to Monday the 21st. That’s a solid 5-day stretch of nothing.
Now, Tuesday the 22nd afternoon is where it gets interesting. The wind goes glassy, a 6ft SSW groundswell with a long 14-second period shows up, and the energy reading climbs to 1428. This is a clean, glassy window for experienced surfers. The swell size is solid but not out of control. This could be your best bet. Water temp is about average for the season.
Then Wednesday the 23rd morning is a beast. A massive 18ft SW swell with a 12-second period and offshore wind. The energy reading is a massive 11226 – that’s some serious juice. But the break is saying it’s predicted to be too big for this spot. That’s expert-only, and even then, it might just be a churning mess. The afternoon calms down to a clean 7ft S swell, but the wind picks up.
After that, the energy fades fast. From Thursday the 24th onward, it’s back to a long run of poor to marginal conditions with onshore winds and choppy seas. Swell hangs around knee to waist high, but the wind kills any quality. Another long stretch of no recommendations from the 24th through the 30th.
So, the standout is Tuesday the 22nd afternoon for the experienced crew, and maybe early Wednesday the 23rd for the real big-wave chargers. The rest is a waiting game.
Stay salty,
Rusty
Short Range ForecastHeavy rain (total 51mm), heaviest during Tue afternoon. Warm (max 26°C on Mon night, min 19°C on Thu afternoon). Winds increasing (calm on Tue afternoon, fresh winds from the NNE by Thu morning). | Days 5-7 Weather SummaryHeavy rain (total 55mm), heaviest during Sat morning. Warm (max 25°C on Sun afternoon, min 20°C on Thu night). Winds decreasing (fresh winds from the NNE on Fri afternoon, light winds from the ENE by Sat night). | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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 9 | E 14 | E 14 | E 13 | E 13 | E 12 | E 12 | NE 7 | NE 8 | ENE 8 | ENE 8 | SE 15 | SE 14 | SE 13 | SE 13 | SE 12 | SE 13 | SE 12 | SE 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 199 | 201 | 261 | 167 | 215 | 148 | 138 | 379 | 665 | 869 | 953 | 1417 | 3326 | 2795 | 3393 | 2733 | 2617 | 1769 | 1711 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-on | cross-on | cross-on | on | cross-on | on | on | cross-on | cross-on | on | cross-on | cross-on | cross-off | on | on | on |
High Tide | 6:30AM1.34m | 5:51PM1.49m | 7:13AM1.25m | 6:12PM1.46m | 8:02AM1.15m | 6:32PM1.41m | 9:14AM1.06m | 6:55PM1.35m | 7:19PM1.28m | 7:59PM1.20m | |||||||||
Low Tide | 00:06AM0.27m | 11:59AM0.70m | 00:40AM0.28m | 12:20PM0.81m | 1:18AM0.32m | 12:36PM0.90m | 2:02AM0.39m | 12:42PM0.99m | 3:03AM0.46m | 4:35AM0.51m | |||||||||
 |  |  |  |  | |  | | | | |  | | | |  |  | |  | |
 | — | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — |
 | — | — | 5:45 | — | — | 5:45 | — | — | 5:44 | — | — | 5:42 | — | — | 5:40 | — | — | 5:38 | — |
mm | 4 | 3 | 19 | 4 | 5 | 4 | 9 | 2 | 1 | 1 | 1 | — | 4 | 23 | 14 | 12 | — | — | — |
Temp °C | 26 | 25 | 24 | 23 | 23 | 23 | 23 | 20 | 20 | 21 | 21 | 21 | 21 | 23 | 23 | 24 | 23 | 25 | 22 |
Feels °C | 27 | 26 | 27 | 25 | 23 | 24 | 24 | 16 | 16 | 17 | 17 | 16 | 17 | 22 | 24 | 25 | 24 | 26 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 8 | SSE 7 | SE 7 | SSE 6 | SE 8 | E 12 | SE 8 | E 14 | SE 9 | SE 18 | SE 15 | SE 14 | SE 13 | SE 13 | SE 12 | SE 13 | SE 12 | SE 12 |
| kJ | 199 | 201 | 178 | 152 | 71 | 78 | 138 | 28 | 14 | 3 | 319 | 1417 | 3326 | 2795 | 3393 | 2733 | 2617 | 1769 | 1711 |
Swell 2 Height (m) Direction Period (s) | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | SE 8 | E 12 | SE 9 | — | SE 8 | — | — | E 10 | E 10 | S 15 | E 14 | E 13 | E 12 |
| kJ | 189 | 195 | 261 | 167 | 215 | 148 | 64 | 67 | 3 | — | 3 | — | — | 98 | 127 | 858 | 15 | 31 | 45 |
Swell 3 Height (m) Direction Period (s) | ENE 7 | ENE 7 | — | SSW 6 | SSW 6 | SW 5 | E 16 | E 15 | E 13 | — | — | — | — | — | — | NE 9 | — | E 13 | E 12 |
| kJ | 10 | 10 | — | 22 | 12 | 7 | 5 | 4 | 31 | — | — | — | — | — | — | 226 | — | 54 | 103 |
Wind waves Height (m) Direction Period (s) | SW 4 | SW 4 | SSE 7 | NE 2 | NE 4 | NE 5 | NE 6 | NE 7 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 6 | — | NNE 9 | NE 5 | ENE 12 |
| kJ | 7 | 5 | 137 | 1 | 15 | 43 | 69 | 379 | 665 | 869 | 953 | 848 | 651 | 441 | 263 | — | 129 | 64 | 371 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 104 | 0 | 0 | 17 | 70 | 30 | 17 | 303 | 303 | 544 | 561 | 561 | 544 | 626 | 115 | 63 | 17 | 17 | 3 |
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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