
Surf Forecasts:
Shida surf forecast from 13 Sep 2026:
- Best quality surf: Saturday 19 Sep, 12AM (local time) - 10ft (3.0m), 15s period, SE swell with cross-onshore winds.
- Most powerful swell: Saturday 19 Sep, 3AM (local time) - 10ft (3.0m), 15s period, SE swell with 4,234 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 9PM (local time) - 2ft (0.6m), 12s 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 Sunday (Sep 13) at 9PM. The primary swell is predicted to be 0.6m and 12s period with a secondary swell of 0.6m and 8s. 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 15s 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 0.7m 4s period and expected on Monday (Sep 14) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sun 13th Sep) | 2ft (0.6m) 12s |
| Best Surf | 12AM (Sat 19th Sep) | 10ft (3.0m) 15s |
| Most Powerful | 3AM (Sat 19th Sep) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's get into it for Shida.
We've got a bit of a mixed bag on the cards. The first week is pretty grim, with strong onshore winds and a lot of rain messing up the waves. But, there’s a serious pulse of energy coming through later in the period that’ll make things interesting, though it’ll be way too big for this spot. We’ll have a small window of clean conditions at the very end if you’re patient.
Looking at the immediate week, from Sunday the 13th, we start off small. The afternoon sees clean 2ft surf from the ESE, with that 13-second period giving it some shape. But it’s inconsistent, so don’t expect a non-stop party. The water temperature is sitting at 79°, bang on average for this time of year, so no surprises there.
Monday the 14th goes downhill fast. A strong SSW wind kicks up, and while the swell hangs around 2ft to 3ft, the conditions are poor. Tuesday and Wednesday are even worse with rain and onshore winds turning things lumpy. By Thursday the 17th, the swell builds but it's a messy 6ft with a short, weak period of only 6-7 seconds – that’s pure wind-chop.
The real story starts on Friday the 18th into the following week. The combined swell energy ramps up massively, from 703 on Friday morning to a massive 2460 that afternoon, but the wind is all wrong. Then from the 19th to the 22nd, we’re looking at a monster swell. We’re talking 10ft up to a terrifying 23ft with combined energy readings over 20,000. This is huge, powerful groundswell with periods stretching to 14 seconds. For an exposed spot like Shida, this is way out of the beginner zone and even too big for most intermediate surfers; this is expert territory only, and even then it’s going to be a washout. It’s a real shame because the wind on Saturday the 19th and Monday the 21st is actually offshore, but the size makes it unsurfable here.
After that massive pulse passes, Wednesday the 23rd through Friday the 25th is a write-off with onshore winds and weak, short-period slop. However, there’s a little glimmer on Friday the 25th afternoon. The swell drops to a more manageable 6ft from the ENE, but the real win is that glassy wind. It’ll be clean, but that 7-second period is still pretty short so don’t expect a ton of power.
The absolute standout is clear as day for the final weekend. Saturday the 27th and Sunday the 28th are your best bets. On Saturday morning the 27th, we’ve got head-high 8ft swell from the ENE, but with glassy conditions it’s going to be clean. The combined energy is a solid 1168, meaning there’s some real push. That’s excellent for experienced surfers, but the longer period (8 seconds) might make it a little tricky on the beach break. The real gem is Sunday the 28th. The wind goes clean offshore from the SSW with a 5ft to 7ft swell from the SSE/SE. The period jumps up to 14 seconds, which is proper groundswell with heaps of energy (over 2100). This will produce the best shaped, most powerful waves of the whole outlook, but remember, that longer period can make it close out on a beach break, so look for a peak that handles the juice. Crowds are likely here on days like this.
All in all, if you're an expert and don't mind the risk of the big stuff, the week of the 19th is a spectacle, but for a proper surf, hold out for that stellar Sunday the 28th.
Rusty.
Short Range ForecastHeavy rain (total 26mm), heaviest during Tue night. Warm (max 27°C on Mon morning, min 22°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 34mm), heaviest during Wed night. Warm (max 24°C on Fri afternoon, min 20°C on Thu night). Winds decreasing (fresh winds from the NNE on Thu night, light winds from the ENE by Sat morning). | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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) | ESE 13 | E 12 | SE 10 | SE 9 | SE 9 | E 14 | E 14 | E 13 | E 13 | E 12 | E 12 | NE 6 | ENE 7 | NE 7 | ENE 7 | SE 17 | SE 15 | SE 13 | SE 12 | SE 12 |
Wave Graph | ||||||||||||||||||||
178 | 108 | 77 | 147 | 231 | 195 | 196 | 167 | 215 | 148 | 138 | 124 | 332 | 362 | 332 | 2140 | 4192 | 3514 | 2834 | 2296 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-off | cross |
High Tide | 5:12PM1.50m | 5:49AM1.42m | 5:32PM1.50m | 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 | ||||||||
Low Tide | 11:33PM0.31m | 11:35AM0.58m | 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 | |||||||||
— | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — | 5:20 | — | — | 5:22 | — | — | 5:22 | — | — | |
5:49 | — | — | 5:47 | — | — | 5:45 | — | — | 5:45 | — | — | 5:44 | — | — | 5:42 | — | — | 5:40 | — | |
mm | — | — | — | — | 1 | 2 | 3 | 9 | 11 | 6 | 8 | 2 | 1 | — | — | 2 | 7 | 8 | 11 | 40 |
Temp °C | 24 | 25 | 27 | 27 | 25 | 25 | 25 | 24 | 22 | 22 | 23 | 22 | 22 | 20 | 23 | 24 | 24 | 24 | 23 | 23 |
Feels °C | 28 | 28 | 28 | 27 | 26 | 26 | 28 | 28 | 23 | 23 | 25 | 20 | 19 | 16 | 22 | 24 | 24 | 26 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | ESE 13 | ESE 9 | SE 10 | SE 9 | SE 9 | SE 8 | SE 7 | SE 7 | SE 7 | SE 7 | E 12 | E 12 | E 11 | E 12 | SE 18 | SE 17 | SE 15 | SE 13 | SE 12 | SE 12 |
178 | 52 | 77 | 147 | 231 | 160 | 140 | 134 | 67 | 49 | 138 | 97 | 61 | 65 | 206 | 2140 | 4192 | 3514 | 2834 | 2296 | |
Swell 2 Height (m) Direction Period (s) | ENE 6 | E 12 | ESE 9 | E 12 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | SE 8 | SE 7 | E 13 | SSE 9 | E 12 | SE 7 | E 11 | — | SSE 16 | ESE 10 |
25 | 108 | 45 | 112 | 189 | 195 | 196 | 167 | 215 | 148 | 64 | 27 | 14 | 7 | 42 | 54 | 37 | — | 376 | 1000 | |
Swell 3 Height (m) Direction Period (s) | SE 9 | SSE 7 | E 12 | ENE 7 | ENE 7 | S 7 | S 7 | NNE 4 | SE 9 | SSW 5 | E 16 | E 15 | SE 9 | — | SE 22 | E 11 | — | — | — | — |
36 | 19 | 76 | 9 | 10 | 1 | 1 | 5 | 14 | 6 | 5 | 4 | 3 | — | 123 | 58 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | SSW 3 | SSW 4 | S 7 | — | — | NE 3 | NE 5 | NE 5 | NE 5 | NE 6 | ENE 7 | NE 7 | ENE 7 | NE 7 | NE 11 | ENE 10 | ENE 9 | — |
— | — | 2 | 13 | 1 | — | — | 6 | 35 | 62 | 25 | 124 | 332 | 362 | 332 | 208 | 408 | 365 | 266 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 155 | 592 | 115 | 1 | 0 | 3 | 17 | 17 | 17 | 216 | 561 | 544 | 303 | 216 | 544 | 584 | 63 | 63 |
Best forecast wave conditions in Chiba | ||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










