Surf Forecasts:
Shida surf forecast from 1 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 9AM (local time) - 10ft (3.0m), 11s period, SSE swell with offshore winds.
- Most powerful swell: Tuesday 8 Sep, 9PM (local time) - 15ft (4.5m), 12s period, SSE swell with 4,949 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 3AM (local time) - 3ft (0.9m), 11s period with ESE 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 Wednesday (Sep 02) at 3AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.8m 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 4.5m 12s and forecast to arrive on Tuesday (Sep 08) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 2nd Sep) | 3ft (0.9m) 11s |
| Best Surf | 9AM (Tue 8th Sep) | 10ft (3.0m) 11s |
| Most Powerful | 9PM (Tue 8th Sep) | 15ft (4.5m) 12s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk about what’s coming up for Shida.
First up, the water temp is about average for this time of year. Nothing weird going on there.
We’ve got a bit of a mixed bag over the next couple of weeks. The first few days are actually pretty clean, but the swell is small. Wednesday morning, the 2nd of September, you’ll see some clean 3ft waves from the ESE, with a light breeze and a moderate energy level (205). It’s surfable, but you’ll be hunting for the better ones. That afternoon stays clean, pushing 3ft from the E with 275 energy. The best of this early stretch is probably Thursday morning, the 3rd, with clean 2ft waves and a light offshore wind from the SSW. It’s small, but it’s glassy. The crowds can be an issue here, so if you want a piece of that, get out early.
Then it gets rough. From Friday the 4th through Sunday the 6th, we’re looking at heavy rain, strong cross-onshore winds, and lumpy, choppy conditions. The wave energy is moderate (around 200-300) but it’s just messy. Not worth paddling out for a surf.
Monday the 7th is a bit of a weird one. The morning has a 6ft swell from the E, but with onshore wind and a big jump in energy (585). It’s questionable. The afternoon, though, gets interesting: a 7ft S swell with a 12-second period, clean cross-offshore wind, and a massive energy spike to 1508. That’s a proper groundswell starting to fill in, but the tide and wind setup might be tricky.
Now, the real standout – and I mean the *big one* – is for expert surfers only. Starting Tuesday the 8th of September, we’ve got solid SSE groundswell. The morning is a clean 10ft with a 11-second period, strong offshore winds, and energy of 2345. The afternoon goes bigger: 12ft, energy up to 3209. This is big, powerful, and clean. It carries through Wednesday the 9th with a 13ft morning and 3822 energy, then 12ft in the afternoon with 5395 energy. That’s a heap of water moving. For any experienced surfer, this is the window. The swell direction is right on the optimum for Shida (SE), and the winds are offshore or cross-off. It’s gonna be a wild, heavy session. Not for beginners.
After that, the swell drops but stays solid. Saturday the 12th is another highlight: 6ft from the SSE with a 12-second period, clean, and 1060 energy. The conditions are excellent for experienced surfers. The morning looks best. The afternoon gets a bit of cross-chop.
The second week has some good pulses, but the standout is Tuesday the 15th of September. Another big groundswell hits: 10ft from the SE, 14-second period, strong offshore wind, and energy of 4389. That’s very long period, so it’s gonna suck the life out of you paddling, but the waves will be powerful and lined up. The afternoon is similar: 12ft, energy 3855. Again, experts only.
Overall, the first few days are small but clean. The real action is the two big swells: one around the 8th-9th, and another around the 15th. If you’re an expert, those are your days. The rest of the time, it’s either too onshore, too messy, or just average.
Rusty, signing off.
Short Range ForecastHeavy rain (total 129mm), heaviest during Fri afternoon. Warm (max 28°C on Thu morning, min 21°C on Fri morning). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 187mm), heaviest during Sun night. Warm (max 28°C on Mon morning, min 19°C on Sat morning). Winds decreasing (strong winds from the NE on Sun afternoon, light winds from the NNE by Mon morning). | ||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 11 | ESE 10 | E 10 | E 11 | E 10 | E 10 | E 10 | SE 9 | SE 8 | SSW 9 | ESE 7 | ESE 6 | ESE 7 | E 7 | ESE 7 | E 7 | E 7 | S 12 | SSE 12 |
Wave Graph | |||||||||||||||||||
210 | 146 | 200 | 88 | 98 | 71 | 68 | 95 | 108 | 118 | 105 | 108 | 158 | 315 | 261 | 306 | 311 | 1254 | 1413 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | off | off | off | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-off | on | cross-off | cross-off |
High Tide | 7:19AM1.27m | 6:41PM1.49m | 8:22AM1.16m | 7:06PM1.46m | 10:01AM1.07m | 7:36PM1.42m | 8:18PM1.36m | 3:35PM1.23m | 9:56PM1.28m | 3:22PM1.30m | 00:17AM1.28m | ||||||||
Low Tide | 00:57AM0.32m | 12:40PM0.73m | 1:43AM0.31m | 1:03PM0.88m | 2:39AM0.32m | 1:15PM1.01m | 3:57AM0.35m | 5:37AM0.34m | 5:38PM1.22m | 7:05AM0.27m | 7:55PM1.13m | ||||||||
— | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | |
6:06 | — | 6:05 | — | — | 6:04 | — | — | 6:01 | — | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — | |
mm | — | — | — | 1 | 1 | 3 | 9 | 52 | 63 | 4 | 8 | 25 | 30 | 10 | 29 | 70 | 4 | 7 | 13 |
Temp °C | 25 | 27 | 27 | 26 | 28 | 28 | 26 | 22 | 21 | 21 | 21 | 19 | 21 | 22 | 23 | 26 | 28 | 27 | 27 |
Feels °C | 26 | 29 | 29 | 29 | 31 | 31 | 29 | 21 | 22 | 20 | 18 | 16 | 18 | 19 | 21 | 26 | 30 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | ESE 11 | ESE 10 | E 10 | E 7 | E 10 | E 10 | SSE 6 | SE 9 | SE 8 | ESE 7 | ESE 7 | S 9 | ESE 7 | SSW 10 | ENE 9 | ENE 8 | S 10 | S 12 | SSE 12 |
210 | 146 | 200 | 52 | 98 | 71 | 66 | 95 | 108 | 93 | 70 | 56 | 158 | 10 | 46 | 28 | 221 | 1254 | 1413 | |
Swell 2 Height (m) Direction Period (s) | ENE 7 | E 7 | SSW 8 | E 11 | S 8 | E 6 | E 10 | S 10 | S 10 | SSW 9 | SSW 9 | ESE 9 | ENE 11 | SE 12 | SE 11 | SE 11 | S 15 | E 8 | ENE 8 |
69 | 45 | 23 | 88 | 50 | 19 | 68 | 73 | 70 | 118 | 84 | 25 | 47 | 6 | 5 | 19 | 41 | 227 | 197 | |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SSW 8 | E 13 | S 8 | E 7 | SE 10 | SSW 12 | E 9 | NE 5 | E 9 | E 9 | ENE 11 | SSW 8 | SE 14 | SW 10 | SSW 9 | ESE 11 | SE 10 | SE 10 |
14 | 14 | 52 | 36 | 22 | 24 | 45 | 42 | 12 | 40 | 39 | 13 | 24 | 8 | 4 | 8 | 12 | 27 | 16 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | S 8 | — | NE 5 | — | — | ESE 7 | ESE 6 | — | E 7 | ESE 7 | E 7 | E 7 | — | — |
— | — | — | — | — | 69 | — | 29 | — | — | 105 | 108 | — | 315 | 261 | 306 | 311 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 70 | 0 | 0 | 0 | 0 | 0 | 59 | 63 | 23 | 17 | 640 | 640 | 561 | 626 | 626 | 30 | 3 | 74 | 584 |
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.











