
Surf Forecasts:
Shida surf forecast from 6 Sep 2026:
- Best quality surf: Monday 7 Sep, 3AM (local time) - 10ft (3.0m), 8s period, SE swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 3AM (local time) - 10ft (3.0m), 9s period, S swell with 1,468 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 3AM (local time) - 10ft (3.0m), 8s 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 Monday (Sep 07) at 3AM. The primary swell is predicted to be 3.0m and 8s period with a secondary swell of 0.9m and 9s. Another secondary swell of 0.5m and 10s is also forecast. 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 9s and forecast to arrive on Tuesday (Sep 08) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Saturday (Sep 12) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 7th Sep) | 10ft (3.0m) 8s |
| Best Surf | 3AM (Mon 7th Sep) | 10ft (3.0m) 8s |
| Most Powerful | 3AM (Tue 8th Sep) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
G’day, Rusty here. We’ve got a solid run of swell coming into Shida, but it’s a mixed bag. The first few days have plenty of size, but the wind’s going to be a problem for most of it, and the standout window is going to be tight.
The real action kicks off now with a big pulse of southerly swell. Monday morning, September 7th, we’re looking at a meaty 8ft swell from the south with a 9-second period, but it’s blowing a 22 mph southerly offshore. That’s clean, but the swell energy is pumping hard at (1504). The afternoon bumps up to 10ft from the south, same wind, and that’s just too big for this spot. It’s expert only territory anyway.
Tuesday morning, September 8th, the swell drops to 7ft from the south, but the wind swings to a 12 mph cross-offshore. Still clean, but the energy is still significant at (802). The afternoon is where we get a real standout: Tuesday afternoon, same 7ft south swell, but the wind drops to a 6 mph cross-offshore. That’s a light breeze, clean face, and the energy is pumping at (1295). This is the best of the first week—great size, clean conditions, and it’s only for experienced surfers. Crowds are often a thing here, so expect company.
Wednesday, September 9th, the swell holds around 7ft to 8ft from the south, but a fresh 19 mph cross-offshore wind spoils it. The morning’s a write-off with only marginal conditions, and the afternoon is messy too. Energy is moderate to strong (714 to 1083), but the wind’s too strong.
From Thursday, September 10th, it all goes pear-shaped. The swell drops off hard, wind goes onshore, and we get a run of poor surf that lasts over a week. We’re talking tiny, weak waves—2ft to 3ft—with cross-onshore winds and choppy conditions. The energy barely cracks 200 most days. There’s a brief flicker on Saturday, September 12th, with a glassy 2ft easterly swell, but it’s barely surfable. That gap of poor conditions stretches right through until Wednesday, September 16th.
Wednesday morning, September 16th, the glass comes back. A 2ft easterly swell with a 12-second period, and it’s glassy as anything. The energy is light at (272), but the clean, offshore wind from the SSW in the afternoon makes it a fun small-wave session. This is the next real bright spot—light, clean, and glassy.
Then we hit another dry spell. From Thursday, September 17th, right through to Sunday, September 20th, it’s back to poor surf. Swell sizes are tiny (2ft to 2ft), energy is low (under 200), and wind is all over the place. Not much to get excited about.
Finally, the long-range window brings a promising pulse. Monday, September 21st, we see a 4ft swell from the east-northeast with an 8-second period, but it’s cross-onshore and marginal. However, Monday afternoon is a real standout for the second week: a 5ft swell from the east-northeast, clean with a 9 mph cross-offshore breeze, and energy building to (343). That’s a fun, clean wave.
Then the real kicker: Tuesday morning, September 22nd. A 5ft swell from the southeast with a very long 17-second period. The combined energy is massive at (1556). It’s glassy—absolutely dead calm. This is a true groundswell with serious grunt. With that long period, it’ll be best on the reefs and points, not the beach break. It’s a standout for experts, but it’s still two weeks out. Promising, but we’ll have to watch how it shapes up. The water temp is about average for the time of year.
For the best of the bunch: Tuesday afternoon, September 8th, with that 7ft south swell and light cross-offshore wind at Shida. Clean, solid size, and plenty of energy (1295). The other standout is Tuesday morning, September 22nd—that glassy, long-period groundswell at 5ft from the southeast. Both are expert territory, but they’re the real highlights.
Rusty.
Short Range ForecastHeavy rain (total 102mm), heaviest during Sun night. Warm (max 29°C on Wed morning, min 24°C on Sun night). Winds decreasing (strong winds from the SE on Sun night, calm by Wed afternoon). | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Wed night. Warm (max 25°C on Sat morning, min 20°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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 8 | S 9 | S 9 | S 9 | S 9 | S 9 | S 9 | S 8 | S 9 | S 9 | S 8 | S 8 | S 8 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 |
Wave Graph | |||||||||||||||||||
1000 | 1183 | 1361 | 1463 | 726 | 700 | 731 | 670 | 1005 | 539 | 201 | 130 | 74 | 106 | 100 | 136 | 134 | 128 | 130 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | on | cross-on | cross-on | cross-on | on | cross-on | glassy | cross-off | cross-on |
High Tide | 9:56PM1.28m | 3:22PM1.30m | 00:17AM1.28m | 3:37PM1.35m | 1:44AM1.35m | 3:56PM1.40m | 2:47AM1.42m | 4:15PM1.43m | 3:38AM1.47m | 4:34PM1.46m | 4:24AM1.49m | 4:53PM1.48m | |||||||
Low Tide | 7:05AM0.27m | 7:55PM1.13m | 8:07AM0.21m | 8:42PM0.99m | 8:55AM0.18m | 9:19PM0.83m | 9:35AM0.19m | 9:53PM0.67m | 10:09AM0.25m | 10:27PM0.52m | 10:40AM0.34m | 11:00PM0.40m | |||||||
— | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | |
— | — | 5:58 | — | — | 5:57 | — | — | 5:54 | — | — | 5:53 | — | — | 5:52 | — | — | 5:51 | — | |
mm | 70 | 10 | 5 | — | 3 | 4 | 5 | 1 | 4 | 8 | 2 | 2 | 1 | — | — | — | — | — | — |
Temp °C | 26 | 27 | 27 | 27 | 28 | 27 | 27 | 29 | 29 | 24 | 22 | 21 | 21 | 22 | 22 | 22 | 25 | 25 | 24 |
Feels °C | 25 | 27 | 27 | 28 | 31 | 31 | 29 | 29 | 30 | 28 | 21 | 19 | 20 | 23 | 23 | 26 | 28 | 28 | 27 |
Swell 1 Height (m) Direction Period (s) | S 9 | E 8 | E 8 | S 9 | S 9 | SSE 9 | S 9 | NE 8 | NE 8 | S 9 | S 8 | S 8 | S 8 | ENE 6 | S 8 | E 14 | E 14 | E 13 | SE 9 |
175 | 316 | 230 | 1041 | 726 | 528 | 493 | 11 | 11 | 539 | 201 | 130 | 74 | 51 | 40 | 136 | 134 | 128 | 62 | |
Swell 2 Height (m) Direction Period (s) | S 9 | SE 11 | E 18 | E 8 | E 9 | E 8 | E 8 | ESE 10 | E 16 | ESE 16 | ESE 15 | ESE 15 | ESE 14 | S 8 | E 14 | NE 6 | ESE 9 | ESE 9 | E 13 |
175 | 5 | 6 | 140 | 71 | 51 | 31 | 10 | 21 | 49 | 42 | 72 | 67 | 54 | 100 | 15 | 31 | 53 | 130 | |
Swell 3 Height (m) Direction Period (s) | NE 12 | NE 11 | E 18 | NE 11 | E 16 | SE 10 | SE 10 | E 17 | E 16 | E 16 | SE 9 | SE 9 | SE 9 | E 14 | ESE 10 | S 7 | NE 6 | S 7 | NE 6 |
23 | 31 | 6 | 4 | 5 | 16 | 15 | 23 | 46 | 43 | 14 | 23 | 22 | 106 | 36 | 27 | 14 | 17 | 9 | |
Wind waves Height (m) Direction Period (s) | ESE 8 | S 9 | S 9 | S 9 | — | S 9 | S 9 | S 8 | S 9 | NE 7 | NE 7 | ENE 7 | ENE 6 | — | NE 6 | — | — | ESE 3 | — |
1000 | 1183 | 1361 | 1463 | — | 700 | 731 | 670 | 1005 | 215 | 122 | 62 | 58 | — | 31 | — | — | 2 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 626 | 208 | 303 | 104 | 63 | 0 | 63 | 91 | 56 | 0 | 17 | 63 | 63 | 23 | 3 | 7 | 0 | 0 | 17 |
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.










