Surf Forecasts:
Shida surf forecast from 14 Aug 2026:
- Best quality surf: Saturday 15 Aug, 12AM (local time) - 5.5ft (1.7m), 10s period, ESE swell with cross-offshore winds.
- Most powerful swell: Friday 14 Aug, 6PM (local time) - 6ft (1.9m), 10s period, E swell with 696 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 12AM (local time) - 5.5ft (1.7m), 10s 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 Saturday (Aug 15) at 12AM. The primary swell is predicted to be 1.7m and 10s period with a secondary swell of 0.6m and 10s. 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 1.9m 10s and forecast to arrive on Friday (Aug 14) at 6PM. 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+) | 12AM (Sat 15th Aug) | 5.5ft (1.7m) 10s |
| Best Surf | 12AM (Sat 15th Aug) | 5.5ft (1.7m) 10s |
| Most Powerful | 6PM (Fri 14th Aug) | 6ft (1.9m) 10s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s happening at Shida over the next couple of weeks. There’s a big stretch of dud days to get through, but there’s a proper pulse of energy shaping up down the line if you can wait.
First things first, you’re looking at a pretty poor run to kick things off. The water’s sitting at 79°, which is about average for this time of year, so no surprises there. But the surf? Man, from Friday the 14th right through until Saturday the 22nd, it’s mostly a write-off. You’ve got small, weak, messy waves day after day. The swell energy is all over the place but pretty weak for the most part, with occasional moderate readings like 1326 on Friday morning, but the winds are never clean enough to make it worthwhile. It’s mostly crossed-up or onshore, with some chop. There are a few afternoons where it cleans up a touch, but the swell’s just not there. Honestly, this whole first week and a half is a real grind. The best you can say is Monday afternoon the 17th looks clean with a light cross-off breeze, but the swell’s only 4 ft from the ESE at a short 9 seconds – not enough to get excited about.
Now, if you’ve got patience, the real story starts on Sunday the 23rd. The swell direction swings and you start to see some proper groundswell potential. The standout window is Tuesday the 25th through Wednesday the 26th. On Tuesday afternoon the 25th, Shida gets a solid 6 ft swell from the SE, with a nice long 14-second period pushing a strong combined energy of 1539. The wind is a clean cross-off, and it’s marked as excellent for experienced surfers. This is your best bet. On Wednesday the 26th, things get even better. The morning is glassy – absolutely dead calm – with a 7 ft ESE swell at 14 seconds and energy at 1841. That’s proper stuff. The wind stays light offshore in the afternoon. These are the days to circle. That big, long-period swell is going to line up nicely, but keep in mind it might wall up a bit on a beach break; Shida is an exposed setup so it should handle it, but expect it to be powerful and for experienced surfers only – over 8 ft is expert territory, and this is close. It could get a bit heavy. Also, it’s inconsistent and can be crowded here, so don’t expect empty lineups if you paddle out.
The energy drops off a bit late in the week but the conditions hold. Friday the 28th still has clean 5 ft swell from the ENE, and the water’s still warm. By Saturday the 29th, it fades out to small and weak, with a fresh offshore wind that’s not much use for paddling.
Honestly, the only two real standouts are Tuesday the 25th afternoon and Wednesday the 26th morning and afternoon. Wait for that glassy morning on the 26th – that’s the one to remember.
Rusty.
Short Range ForecastModerate rain (total 11mm), heaviest on Fri morning. Warm (max 27°C on Fri morning, min 24°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue afternoon. Warm (max 28°C on Wed morning, min 24°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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 10 | E 10 | ESE 10 | E 10 | ESE 9 | ESE 9 | E 9 | E 8 | E 8 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 11 | E 10 | E 10 |
Wave Graph | |||||||||||||||||||||
738 | 716 | 540 | 423 | 367 | 302 | 217 | 196 | 191 | 238 | 197 | 202 | 274 | 189 | 390 | 408 | 524 | 494 | 682 | 338 | 230 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross | cross | cross-on | cross-on | cross | cross | cross | cross-off | cross-off | cross-on | cross-on | on | cross-on | cross-on | on | cross | cross-on | cross-on |
High Tide | 5:48PM1.46m | 5:10AM1.49m | 6:09PM1.47m | 5:56AM1.42m | 6:30PM1.47m | 6:42AM1.33m | 6:50PM1.46m | 7:30AM1.22m | 7:11PM1.44m | 8:25AM1.11m | 7:33PM1.41m | 9:44AM1.02m | 7:57PM1.37m | ||||||||
Low Tide | 11:09AM0.11m | 11:26PM0.65m | 11:41AM0.23m | 00:04AM0.55m | 12:10PM0.38m | 00:42AM0.48m | 12:36PM0.53m | 1:22AM0.44m | 12:59PM0.68m | 2:06AM0.43m | 1:18PM0.81m | 2:56AM0.45m | 1:27PM0.93m | ||||||||
4:56 | — | — | 4:56 | — | — | 4:56 | — | — | 4:58 | — | — | 4:58 | — | — | 5:00 | — | — | 5:00 | — | — | |
— | 6:29 | — | — | 6:28 | — | — | 6:27 | — | — | 6:25 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — | |
mm | 3 | 2 | 2 | — | — | — | — | — | 4 | — | — | — | — | 2 | 1 | 1 | 1 | 1 | 3 | — | — |
Temp °C | 27 | 26 | 25 | 27 | 27 | 25 | 26 | 26 | 25 | 27 | 27 | 25 | 27 | 26 | 26 | 28 | 27 | 25 | 26 | 26 | 24 |
Feels °C | 30 | 28 | 26 | 28 | 28 | 26 | 27 | 27 | 27 | 29 | 28 | 27 | 28 | 27 | 29 | 31 | 29 | 27 | 28 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | ESE 10 | E 10 | ESE 9 | ESE 9 | E 9 | E 8 | E 8 | ESE 9 | ESE 9 | ESE 9 | E 9 | SSE 6 | ESE 7 | SSE 7 | S 7 | SSE 8 | E 11 | E 10 | E 10 |
530 | 520 | 540 | 423 | 367 | 302 | 217 | 196 | 191 | 238 | 197 | 202 | 199 | 26 | 198 | 52 | 36 | 66 | 440 | 338 | 230 | |
Swell 2 Height (m) Direction Period (s) | SSW 9 | SSE 11 | S 10 | SSE 9 | S 10 | S 9 | ESE 9 | S 9 | SE 11 | S 8 | SE 11 | SE 11 | SSE 6 | SE 10 | S 8 | SE 10 | SE 10 | SE 10 | SSE 7 | SSE 7 | S 10 |
28 | 40 | 68 | 45 | 53 | 44 | 32 | 37 | 56 | 23 | 42 | 29 | 13 | 36 | 45 | 34 | 44 | 15 | 41 | 42 | 88 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | SSW 9 | S 12 | SSW 11 | SSE 8 | SE 10 | SSW 9 | ESE 9 | S 9 | SE 11 | S 8 | SSW 8 | SE 10 | SSW 8 | SE 10 | SSW 9 | SSW 8 | SSW 8 | SE 10 | SE 11 | SE 11 |
30 | 16 | 11 | 40 | 14 | 27 | 28 | 34 | 23 | 31 | 22 | 13 | 27 | 6 | 33 | 8 | 14 | 12 | 37 | 40 | 29 | |
Wind waves Height (m) Direction Period (s) | E 10 | E 10 | — | — | — | — | — | — | — | E 9 | — | — | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 11 | — | — |
738 | 716 | — | — | — | — | — | — | — | 229 | — | — | 274 | 189 | 390 | 408 | 524 | 494 | 682 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 8 | 115 | 0 | 77 | 565 | 17 | 63 | 63 | 77 | 63 | 0 | 0 | 70 | 544 | 3 | 23 | 63 | 17 | 70 | 956 | 23 |
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.











