Surf Forecasts:
Shida surf forecast from 3 Sep 2026:
- Best quality surf: Monday 7 Sep, 9AM (local time) - 10ft (3.0m), 10s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 3AM (local time) - 10ft (3.0m), 10s period, S swell with 2,149 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 9AM (local time) - 10ft (3.0m), 10s period with S 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 9AM. The primary swell is predicted to be 3.0m and 10s period with a secondary swell of 2.4m and 10s. Another secondary swell of 2.3m and 9s 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 10s and forecast to arrive on Tuesday (Sep 08) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Friday (Sep 11) at 6AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Mon 7th Sep) | 10ft (3.0m) 10s |
| Best Surf | 9AM (Mon 7th Sep) | 10ft (3.0m) 10s |
| Most Powerful | 3AM (Tue 8th Sep) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s break it down in feet.
First thing, the first week from Friday, 4 September, through Monday, 7 September, is a total dud. The wind is howling out of the east and northeast, and the waves are just a mess. Don’t bother paddling out.
Tuesday, 8 September is the day we’ve been waiting for. The wind shifts to the southwest, and Shida comes alive. The morning has a solid 8ft of SSE groundswell, with a 10-second period, hitting the coast. The wind is a light cross-offshore, and the water is clean. The combined energy is pumping (1379). This is proper, powerful surf for experienced surfers only – it’s too big for beginners. The afternoon gets even better, with the wind going fully offshore from the SSW at 12 mph, and the swell easing a bit to 7ft. The water temp is about average for the time of year.
Wednesday, 9 September still holds size, with 8ft of SSE swell in the morning and the wind staying cross-offshore. There’s a risk of thunderstorms, and the quality is a bit questionable, but the energy is high (1132). The crowd factor at Shida is "often," so expect some company.
Friday, 11 September is a sneaky good one. The morning is glassy, completely dead calm, with a small 4ft ENE swell. It’s tiny, but it’s clean. The afternoon switches to a clean offshore wind from the SSW, and the swell drops to 2ft but with a very long period of 14 seconds – that’s proper groundswell. Perfect for a longboard or a fish.
Tuesday, 15 September through Thursday, 17 September offers a few more chances. The morning of the 17th is glassy again, with a 4ft E swell. Not huge, but clean and rideable.
The absolute best of the 16 days is Tuesday, 8 September. It’s got the size, the direction (S to SSE hitting the optimum SE exposure), and the clean offshore wind. The second standout is the glassy morning of Friday, 11 September – it’s smaller, but that 14-second period will give you some sweet lines, and the peace is worth it.
For the rest of the second week, the swell stays small or gets blown out by the northeast trades. It’s a mixed bag, so keep your eyes on the wind.
Rusty out.
Short Range ForecastHeavy rain (total 128mm), heaviest during Sun night. Warm (max 25°C on Fri morning, min 21°C on Fri night). Winds increasing (light winds from the ENE on Fri morning, strong winds from the N by Sun night). | Days 4-6 Weather SummaryHeavy rain (total 76mm), heaviest during Tue morning. Warm (max 25°C on Tue night, min 20°C on Mon night). Winds decreasing (fresh winds from the N on Mon afternoon, calm by Wed night). | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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) | S 10 | S 10 | S 9 | E 6 | ENE 6 | ENE 6 | ENE 7 | E 8 | E 9 | S 10 | S 10 | S 10 | S 10 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 8 | ESE 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 73 | 70 | 61 | 247 | 253 | 230 | 513 | 773 | 1730 | 1565 | 1857 | 2080 | 1902 | 2016 | 1597 | 1040 | 664 | 359 | 208 | 115 | 63 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | on | on | on | cross-on | cross-off | cross-on | glassy | glassy | cross-on | glassy | on |
High Tide | 10:01AM1.07m | 7:36PM1.42m | 8:18PM1.36m | 3:35PM1.23m | 9:56PM1.28m | 3:22PM1.30m | 00:17AM1.28m | 3:37PM1.35m | 1:44AM1.35m | 3:56PM1.40m | 2:47AM1.42m | 4:15PM1.43m | |||||||||
Low Tide | 1:15PM1.01m | 3:57AM0.35m | 5:37AM0.34m | 5:38PM1.22m | 7:05AM0.27m | 7:55PM1.13m | 8:07AM0.21m | 8:42PM0.99m | 8:55AM0.18m | 9:19PM0.83m | 9:35AM0.19m | 9:53PM0.67m | |||||||||
 |  |  |  |  |  | |  |  | | |  | |  |  | | | | | |  | |
 | 5:11 | — | — | 5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — |
 | — | 6:01 | — | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — | — | 5:57 | — | — | 5:54 | — | — | 5:53 | — |
mm | — | 1 | 22 | 9 | 3 | 1 | 2 | 13 | 77 | 5 | 5 | 10 | 27 | 11 | 9 | 3 | 4 | 2 | — | 1 | — |
Temp °C | 25 | 25 | 24 | 21 | 21 | 22 | 24 | 23 | 24 | 23 | 22 | 21 | 21 | 22 | 25 | 23 | 25 | 23 | 25 | 26 | 23 |
Feels °C | 27 | 26 | 25 | 19 | 19 | 19 | 21 | 19 | 22 | 26 | 22 | 18 | 21 | 22 | 27 | 27 | 29 | 26 | 29 | 31 | 26 |
Swell 1 Height (m) Direction Period (s) | SE 6 | SE 6 | S 9 | S 10 | S 9 | SSW 8 | SSW 9 | S 8 | S 9 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 8 | S 8 |
| kJ | 37 | 31 | 61 | 47 | 43 | 14 | 15 | 31 | 83 | 1022 | 1218 | 1255 | 1393 | 1495 | 1597 | 1040 | 664 | 359 | 208 | 115 | 63 |
Swell 2 Height (m) Direction Period (s) | E 9 | S 10 | SE 6 | — | ENE 13 | SSE 8 | SSE 8 | WSW 10 | SW 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | E 16 | NE 6 | E 15 | ESE 9 | ESE 14 |
| kJ | 60 | 70 | 20 | — | 33 | 7 | 7 | 9 | 4 | 885 | 469 | 219 | 106 | 60 | 39 | 22 | 21 | 30 | 38 | 33 | 62 |
Swell 3 Height (m) Direction Period (s) | S 10 | E 9 | E 9 | ENE 13 | ENE 13 | E 12 | SE 12 | SE 14 | — | — | — | — | E 16 | E 19 | E 18 | E 17 | — | ESE 16 | SE 11 | ESE 14 | SE 9 |
| kJ | 73 | 41 | 40 | 17 | 17 | 11 | 6 | 8 | — | — | — | — | 5 | 7 | 6 | 23 | — | 48 | 5 | 69 | 14 |
Wind waves Height (m) Direction Period (s) | NE 3 | ESE 6 | NE 3 | E 6 | ENE 6 | ENE 6 | ENE 7 | E 8 | E 9 | S 10 | S 10 | S 10 | S 10 | S 10 | NNE 6 | NE 6 | NE 7 | NE 7 | NE 4 | ENE 5 | E 5 |
| kJ | 1 | 34 | 9 | 247 | 253 | 230 | 513 | 773 | 1730 | 1565 | 1857 | 2080 | 1902 | 2016 | 59 | 92 | 91 | 75 | 18 | 33 | 42 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 63 | 63 | 30 | 63 | 626 | 544 | 626 | 563 | 583 | 1 | 17 | 17 | 23 | 63 | 0 | 1 | 0 | 0 | 17 | 0 | 3 |
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.
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