Surf Forecasts:
Shida surf forecast from 22 Aug 2026:
- Best quality surf: Monday 24 Aug, 12PM (local time) - 5ft (1.6m), 17s period, SSE swell with offshore winds.
- Most powerful swell: Tuesday 25 Aug, 12AM (local time) - 7ft (2.1m), 14s period, SSE swell with 1,726 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 9PM (local time) - 2.5ft (0.7m), 12s period with SE 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 Sunday (Aug 23) at 9PM. The primary swell is predicted to be 0.7m and 12s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Shida in the next 16 days are 2.1m 14s and forecast to arrive on Tuesday (Aug 25) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Thursday (Aug 27) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 23rd Aug) | 2.5ft (0.7m) 12s |
| Best Surf | 12PM (Mon 24th Aug) | 5ft (1.6m) 17s |
| Most Powerful | 12AM (Tue 25th Aug) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve been staring at the charts for Shida. This spot is inconsistent and best for intermediate surfers, often crowded, with the water temp feeling about normal for this time of year.
We’ve got a slow start. Sunday the 23rd and most of Monday are total duds—weak, choppy, not worth your wax.
The one to circle is Monday the 24th. Monday morning is glassy clean with a 3ft swell from the SSE, a super long 15-second period, and moderate-to-strong energy (803). That’s going to be buttery. Monday afternoon steps up for the experienced crew: 6ft from the SSE, 16-second period, strong energy (1459), and a moderate offshore wind. That’s your session—powerful and clean.
Tuesday the 25th still has some size—6ft from the SSE, 13-second period, strong energy (1901 in the morning)—but the wind is cross-offshore, so it’s clean but not as perfect. Wednesday the 26th afternoon cleans up with 3ft from the S and offshore wind. Thursday the 27th afternoon has 4ft from the S with offshore wind but a short 8-second period.
Then we hit a rough run from Friday the 28th into the first days of September—onshore winds, choppy, poor surf. A brief clean window on Tuesday morning the 1st of September: 5ft from the ESE with moderate energy (773) and cross-offshore wind.
The second week brings the biggest swells, but they’re a mess. Sunday the 6th and Monday the 7th show 8ft to 12ft from the ENE and E, with very strong energy (2492) but short 8-10 second period and cross-onshore wind. That’s too big and too rough—more for kite-surfing than paddling.
So, call it: Monday the 24th is the cream of the crop—glassy morning, offshore afternoon, proper groundswell. Tuesday morning the 25th is next best if you want more size. After that, it’s slim pickings until the second week’s big, ugly stuff.
Rusty
Short Range ForecastModerate rain (total 11mm), heaviest on Sat night. Warm (max 29°C on Tue morning, min 23°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Thu night. Warm (max 29°C on Wed morning, min 23°C on Fri afternoon). Wind will be generally light. | ||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 9 | SSE 12 | SSE 12 | SSE 18 | SSE 16 | SSE 14 | SSE 13 | SSE 13 | S 13 | S 13 | S 13 | SSW 12 | S 9 | S 8 | E 13 | E 13 | E 12 | S 11 |
Wave Graph  | |||||||||||||||||||
 kJ | 198 | 83 | 103 | 196 | 294 | 1358 | 1726 | 1174 | 1327 | 1104 | 529 | 334 | 167 | 235 | 191 | 168 | 158 | 141 | 182 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-on | glassy | glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | on | cross-on | cross |
High Tide | 9:26PM1.25m | 3:57PM1.20m | 11:30PM1.23m | 3:57PM1.26m | 1:06AM1.26m | 4:09PM1.31m | 2:09AM1.33m | 4:25PM1.36m | 2:57AM1.40m | 4:43PM1.40m | 3:40AM1.45m | 5:00PM1.43m | |||||||
Low Tide | 6:59AM0.43m | 7:26PM1.15m | 8:00AM0.35m | 8:31PM1.08m | 8:45AM0.27m | 9:07PM0.99m | 9:22AM0.21m | 9:38PM0.89m | 9:54AM0.18m | 10:08PM0.78m | 10:24AM0.19m | 10:38PM0.67m | |||||||
 |  |  |  |  | | | | | | | | | | | | | |  | |
 | — | 5:03 | — | — | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — |
 | 6:19 | — | 6:17 | — | — | 6:16 | — | — | 6:15 | — | — | 6:14 | — | — | 6:13 | — | — | 6:12 | — |
mm | 9 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 1 | 4 | 4 |
Temp °C | 25 | 26 | 26 | 25 | 27 | 28 | 26 | 29 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 26 | 25 | 24 |
Feels °C | 30 | 28 | 28 | 30 | 30 | 30 | 28 | 30 | 29 | 30 | 30 | 30 | 29 | 29 | 30 | 30 | 29 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 9 | E 9 | SSE 12 | SSE 12 | SSE 16 | SSE 14 | SSE 13 | SSE 13 | S 13 | S 13 | S 13 | SSE 9 | S 9 | E 13 | S 8 | S 8 | S 8 | S 11 |
| kJ | 198 | 83 | 80 | 196 | 226 | 1358 | 1726 | 1174 | 1327 | 1104 | 529 | 334 | 138 | 235 | 173 | 167 | 143 | 104 | 182 |
Swell 2 Height (m) Direction Period (s) | SSE 4 | SSE 5 | SSE 12 | E 9 | SSE 15 | ESE 12 | ESE 11 | S 16 | ESE 13 | ESE 13 | SSE 11 | SSE 10 | SSW 12 | SSW 12 | S 9 | E 13 | E 13 | E 12 | E 12 |
| kJ | 7 | 7 | 103 | 56 | 294 | 79 | 138 | 526 | 181 | 176 | 146 | 132 | 167 | 78 | 28 | 168 | 158 | 141 | 141 |
Swell 3 Height (m) Direction Period (s) | SSW 9 | SSW 9 | ESE 12 | ESE 12 | SSE 18 | E 8 | ESE 15 | ESE 14 | WSW 10 | E 19 | ESE 12 | ESE 12 | E 12 | E 11 | SW 11 | SE 9 | SE 14 | SE 9 | SSE 10 |
| kJ | 26 | 15 | 49 | 50 | 283 | 22 | 42 | 201 | 9 | 7 | 117 | 113 | 70 | 58 | 31 | 23 | 8 | 23 | 18 |
Wind waves Height (m) Direction Period (s) | — | NNE 2 | NE 3 | — | — | — | SSW 4 | WSW 9 | SSW 4 | SSW 3 | SSW 3 | S 4 | S 5 | — | S 8 | — | NNE 4 | NE 5 | NE 5 |
| kJ | — | 1 | 4 | — | — | — | 14 | 33 | 12 | 4 | 4 | 21 | 49 | — | 191 | — | 13 | 6 | 6 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 3 | 17 | 0 | 0 | 0 | 91 | 149 | 565 | 7 | 91 | 0 | 104 | 91 | 0 | 1 | 3 | 17 | 17 |
Best forecast wave conditions in Chiba | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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