
Surf Forecasts:
Shida surf forecast from 9 Sep 2026:
- Best quality surf: Sunday 13 Sep, 3PM (local time) - 3ft (0.9m), 9s period, SE swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 9PM (local time) - 6ft (1.9m), 9s period, S swell with 562 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 3PM (local time) - 3ft (0.9m), 9s 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 (Sep 13) at 3PM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.6m and 13s. 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 1.9m 9s and forecast to arrive on Wednesday (Sep 09) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 7s period and expected on Friday (Sep 11) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Sun 13th Sep) | 3ft (0.9m) 9s |
| Best Surf | 3PM (Sun 13th Sep) | 3ft (0.9m) 9s |
| Most Powerful | 9PM (Wed 9th Sep) | 6ft (1.9m) 9s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
## Imperial Units
Alright, let’s break this sixteen-day stretch down. We’ve got a rough start, a whole lot of flat to finish, and a big, scary window in the middle. It's a test of nerve, for sure.
We kick things off on Wednesday the 9th with a bit of a pulse. Shida is seeing a clean 2.4m of south swell, but it’s a short 9-second period, and the break is inconsistent. The water’s a warm 81°F, which is about average for this time of year. The combined energy is sitting at 955, which is moderate, but the short period and the inconsistent nature of the spot means it’ll be lumpy. It’s a “maybe” wave, not a “go” wave.
Then, the taps get turned off. From Thursday the 10th through to Tuesday the 15th, we’re looking at poor conditions. Northeast winds are onshore and choppy, and the swell drops right off. There is a small window on Sunday the 13th in the afternoon with a tiny 0.9m southeast swell and light cross-off winds, but it’s nothing flash. Monday the 14th is a bit better. A 1.2m southeast swell, but the wind turns offshore from the SSW. You might find a cleaner one, but the size is small and the period is still weak. The energy for these days is low, staying in the 200-390 range, so it’s slow. The best of this lackluster period looks to be Monday afternoon, with 1.3m and moderate offshore winds. It's just not going to be epic.
Now, the big event. Still a week out, so don’t get too committed to the plan, but Saturday the 19th sees a serious pulse of south-southeast swell. The problem? It’s 3.0m. That’s a solid 10 feet and for a spot like Shida, that’s already getting into “experts only” territory. On top of that, the winds are onshore and choppy, making it a mess. It’s big, but it’s not clean.
Sunday the 20th is where it gets interesting, and this is the standout for the big-wave crew. The swell is still a solid 3.0m from the SSE, but the wind goes glassy, just a whisper of 5 km/h from the north. The energy is pumping at 4124, which is strong to very strong. But, and this is a big but, the predicted swell is too big for this break. It'll be a boiling, foaming mess. Unless you’re a total charger, it’s a day to watch from the cliff. Monday the 21st, it gets even bigger. We’re talking a colossal 7.0m of south swell, which is over 20 feet, and a combined energy of 19842, which is just massive. Again, it’s all due to be too big for Shida. It's just pure, raw power.
After that, the ocean takes a breath. Tuesday the 22nd looks like the one to really pick. The swell is down to a very manageable 1.5m from the SSE, and the wind is light and cross-off from the southeast. This is clean and accessible. This is the best quality-to-safety ratio on offer. The energy is moderate at 619, and the period is 9 seconds, so nothing crazy. This is a proper surf day. The afternoon drops to 1.6m but the period shortens to 6 seconds, so the morning is the time to go.
The final part of the run, Wednesday the 23rd and Thursday the 24th, sees a fresh to strong offshore wind develop. The swell is around 2-2.2m, but the short period and the increasingly blustery conditions mean it won't be easy. Thursday afternoon shows a near gale offshore wind, making it nearly impossible to paddle into. That's a wrap.
In short, if you’re not charging, sit tight for Tuesday the 22nd. If you’re a gun, Sunday and Monday the 20th and 21st are going to be a spectacle, but it’s not a place for the faint of heart.
Rusty.
Short Range ForecastHeavy rain (total 35mm), heaviest during Wed night. Warm (max 29°C on Wed afternoon, min 19°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Sat afternoon. Warm (max 27°C on Mon morning, min 23°C on Sat afternoon). Wind will be generally light. | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 9 | S 9 | NE 7 | ENE 7 | ENE 7 | E 14 | E 14 | E 14 | E 14 | E 13 | ESE 13 | E 13 | SE 9 | SE 9 | SE 9 | SE 9 | E 14 | E 14 | SSE 8 | SE 8 |
Wave Graph | ||||||||||||||||||||
876 | 398 | 234 | 302 | 120 | 106 | 101 | 136 | 134 | 128 | 184 | 123 | 132 | 129 | 230 | 255 | 205 | 183 | 224 | 167 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-off | off | off | off | cross-off | off | off | cross-off |
High Tide | 2:47AM1.42m | 4:15PM1.43m | 3:38AM1.47m | 4:34PM1.46m | 4:24AM1.49m | 4:53PM1.48m | 5:07AM1.47m | 5:12PM1.50m | 5:49AM1.42m | 5:32PM1.50m | 6:30AM1.34m | 5:51PM1.49m | ||||||||
Low Tide | 9:19PM0.83m | 9:35AM0.19m | 9:53PM0.67m | 10:09AM0.25m | 10:27PM0.52m | 10:40AM0.34m | 11:00PM0.40m | 11:09AM0.45m | 11:33PM0.31m | 11:35AM0.58m | 00:06AM0.27m | 11:59AM0.70m | 00:40AM0.28m | |||||||
— | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:18 | — | — | 5:18 | — | — | 5:20 | — | — | |
5:54 | — | — | 5:53 | — | — | 5:52 | — | — | 5:51 | — | — | 5:49 | — | — | 5:47 | — | — | 5:45 | — | |
mm | 4 | 15 | 1 | 1 | 4 | 1 | 8 | 1 | — | 1 | — | — | — | 2 | — | — | 3 | 1 | — | — |
Temp °C | 29 | 22 | 22 | 22 | 21 | 21 | 20 | 21 | 23 | 23 | 23 | 26 | 26 | 26 | 27 | 27 | 25 | 27 | 28 | 26 |
Feels °C | 29 | 19 | 21 | 20 | 20 | 21 | 20 | 23 | 25 | 25 | 25 | 30 | 30 | 30 | 28 | 28 | 26 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | E 16 | S 9 | S 8 | S 8 | S 8 | ENE 6 | S 8 | E 14 | E 14 | E 13 | ESE 13 | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | SE 8 | SE 8 | E 14 | SE 8 |
21 | 398 | 167 | 107 | 63 | 40 | 40 | 136 | 134 | 128 | 184 | 99 | 132 | 129 | 230 | 255 | 205 | 171 | 203 | 164 | |
Swell 2 Height (m) Direction Period (s) | NE 9 | SE 11 | ESE 15 | ESE 15 | ESE 14 | S 8 | E 14 | S 8 | SE 9 | SE 9 | ENE 6 | E 13 | E 13 | E 12 | E 12 | E 12 | E 14 | E 14 | ENE 10 | E 13 |
12 | 19 | 42 | 72 | 67 | 55 | 101 | 28 | 40 | 39 | 15 | 123 | 125 | 108 | 76 | 112 | 189 | 183 | 10 | 167 | |
Swell 3 Height (m) Direction Period (s) | E 16 | ESE 16 | SE 9 | SE 11 | SE 9 | E 14 | SE 10 | NE 7 | SSW 8 | SSW 7 | SE 8 | NE 6 | NE 6 | ENE 6 | E 16 | E 18 | ENE 7 | ENE 10 | ENE 10 | ENE 9 |
46 | 49 | 14 | 18 | 14 | 106 | 23 | 16 | 19 | 18 | 20 | 10 | 10 | 4 | 43 | 24 | 5 | 10 | 38 | 32 | |
Wind waves Height (m) Direction Period (s) | S 9 | NE 7 | NE 7 | ENE 7 | ENE 7 | NNE 7 | NE 6 | ENE 6 | ENE 6 | NE 6 | — | — | — | — | S 7 | S 7 | — | WSW 4 | SSE 8 | — |
876 | 321 | 234 | 302 | 120 | 47 | 37 | 18 | 23 | 18 | — | — | — | — | 1 | 1 | — | 1 | 224 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 626 | 214 | 63 | 63 | 17 | 17 | 17 | 3 | 3 | 17 | 3 | 17 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
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.










