
Surf Forecasts:
Shida surf forecast from 15 Sep 2026:
- Best quality surf: Tuesday 22 Sep, 9AM (local time) - 10ft (3.0m), 14s period, S swell with cross-onshore winds.
- Most powerful swell: Tuesday 22 Sep, 9AM (local time) - 10ft (3.0m), 14s period, S swell with 3,247 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 3PM (local time) - 2.5ft (0.8m), 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 3PM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 1.2m and 7s. 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 3.0m 14s and forecast to arrive on Tuesday (Sep 22) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 8s period and expected on Saturday (Sep 19) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Tue 15th Sep) | 2.5ft (0.8m) 14s |
| Best Surf | 9AM (Tue 22nd Sep) | 10ft (3.0m) 14s |
| Most Powerful | 9AM (Tue 22nd Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, Rusty here. Let's see what's cooking.
Straight up, the next week is a bit of a bummer. The first real shot at a wave doesn't come until Tuesday the 22nd, and even that's got a catch. Let's break it down.
It starts on Tuesday the 15th with small 2ft to 3ft easterly swell at Shida. The energy is moderate (386 to 421), and the wind is light and clean – offshore then cross-offshore. It would be alright, but this spot is *inconsistent*, so don't count on it. Water temp is 78°, which is normal for the season. Wednesday and Thursday are a mess with onshore junk. By Thursday the 17th, the swell hits 8ft but it's a short-period 7-second ENE windswell with 25 mph cross-onshore wind. Pure rubbish.
Friday the 18th through Monday the 21st is all wind-affected and sloppy. The swell pumps up to 8ft with strong energy (up to 2615), but the wind is cross-onshore or onshore, making it lumpy and choppy. No good.
Now, Tuesday the 22nd is a big one. The swell hits 10ft from the S with a 14-second period, and the energy is very strong (3349). But for Shida, that's too big. It's an exposed spot, but at that size it's only for experts, and the report flat out says it's too big for this break. Afternoon it's even bigger at 15ft. The morning has cross-onshore wind, but the afternoon goes cross-offshore with a risk of storms. It's powerful, but not for paddling.
Wednesday the 23rd has the swell dropping to 7ft, but the wind is 31 mph from the SW – a near gale. Clean wind, but that's kite-surfing territory.
Thursday the 24th and Friday the 25th are tiny, poor, and onshore.
Here's the real standout: Sunday the 27th. The morning is glassy, with a 3ft SSE swell and a solid 12-second period. The energy is strong (474) for that size. This would be clean, long-period groundswell. By the afternoon it’s a bit smaller at 2ft, also a 14-second period, with light cross-offshore wind from the SSE. The report says "expect very good surf conditions." This is the best of the lot, but remember Shida is *inconsistent* and *rarely breaks*, so it's a bit of a dice roll.
The 16-day window fades out after that with small swells and onshore winds on Monday the 28th and beyond.
Best bet: Sunday the 27th. Glassy in the morning for clean 3ft SSE groundswell. Afternoon also clean with light cross-offshore wind. It's the only real highlight, but at an inconsistent break, so keep your hopes in check.
Rusty.
Short Range ForecastHeavy rain (total 59mm), heaviest during Tue morning. Warm (max 25°C on Tue afternoon, min 19°C on Wed night). Winds increasing (calm on Tue afternoon, strong winds from the NNE by Thu morning). | Days 4-6 Weather SummaryHeavy rain (total 42mm), heaviest during Sun morning. Warm (max 22°C on Sun afternoon, min 20°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | |||||||||||||||
AM | 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 14 | E 14 | E 13 | E 13 | E 12 | ENE 7 | NE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | SE 14 | SE 13 | SE 12 | SE 11 | SE 11 | SE 12 | S 12 | S 13 | S 13 | S 13 |
Wave Graph | |||||||||||||||||||||
195 | 261 | 167 | 215 | 148 | 175 | 589 | 732 | 635 | 848 | 905 | 2509 | 2076 | 1866 | 1667 | 1298 | 1470 | 870 | 1163 | 1346 | 1632 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | on | cross-on | on | cross-on | on | cross-on | on | on | on | cross-on | cross-on | cross-on |
High Tide | 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 | 3:01PM1.21m | 11:15PM1.15m | ||||||||||
Low Tide | 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 | 6:17AM0.48m | 7:46PM1.10m | ||||||||||
5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | 5:24 | — | — | 5:24 | — | — | |
— | 5:45 | — | — | 5:45 | — | — | 5:44 | — | — | 5:42 | — | — | 5:40 | — | — | 5:38 | — | — | 5:37 | — | |
mm | 10 | 4 | 8 | 8 | 9 | 19 | 1 | — | — | — | — | — | — | 8 | 17 | 17 | — | — | — | — | 1 |
Temp °C | 24 | 25 | 23 | 22 | 22 | 22 | 20 | 20 | 20 | 21 | 20 | 20 | 21 | 21 | 21 | 21 | 22 | 22 | 24 | 24 | 24 |
Feels °C | 26 | 28 | 24 | 22 | 21 | 23 | 14 | 15 | 15 | 16 | 14 | 15 | 17 | 18 | 21 | 19 | 22 | 22 | 24 | 24 | 26 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 7 | SE 6 | SSE 7 | SE 8 | SE 8 | E 12 | SSE 9 | SE 9 | SSE 18 | SE 16 | SE 14 | SE 13 | SE 12 | SE 11 | SE 11 | SE 12 | ESE 9 | S 13 | S 13 | S 13 |
181 | 156 | 123 | 83 | 69 | 53 | 44 | 8 | 3 | 32 | 653 | 2509 | 2076 | 1866 | 1667 | 1298 | 1470 | 554 | 1163 | 1346 | 1632 | |
Swell 2 Height (m) Direction Period (s) | E 14 | E 14 | E 13 | E 13 | E 12 | E 12 | E 15 | ENE 11 | SSE 9 | SE 12 | SSE 11 | — | E 10 | E 10 | NE 9 | E 14 | E 13 | S 12 | E 9 | SE 9 | E 9 |
195 | 261 | 167 | 215 | 148 | 71 | 4 | 24 | 8 | 6 | 12 | — | 54 | 125 | 221 | 14 | 30 | 870 | 355 | 112 | 198 | |
Swell 3 Height (m) Direction Period (s) | ENE 7 | NE 10 | SW 6 | SSW 6 | — | E 16 | E 15 | SSE 9 | SSE 9 | SE 9 | SE 11 | — | — | — | E 10 | E 14 | E 13 | E 12 | E 10 | SE 9 | SE 8 |
10 | 4 | 43 | 13 | — | 5 | 17 | 8 | 8 | 3 | 30 | — | — | — | 100 | 14 | 50 | 66 | 108 | 91 | 49 | |
Wind waves Height (m) Direction Period (s) | — | — | — | NE 5 | NE 6 | ENE 7 | NE 7 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | NE 8 | NE 7 | — | NE 4 | NE 5 | NNE 5 | ENE 11 | ENE 10 | — |
— | — | — | 35 | 103 | 175 | 589 | 732 | 635 | 848 | 905 | 538 | 485 | 248 | — | 19 | 65 | 46 | 575 | 348 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 17 | 70 | 70 | 3 | 216 | 626 | 544 | 561 | 216 | 544 | 303 | 626 | 563 | 303 | 216 | 63 | 63 | 640 | 35 |
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.










