Surf Forecasts:
Shida surf forecast from 29 Aug 2026:
- Best quality surf: Tuesday 1 Sep, 3PM (local time) - 3ft (0.9m), 11s period, ESE swell with cross-offshore winds.
- Most powerful swell: Saturday 5 Sep, 9PM (local time) - 6ft (1.8m), 7s period, E swell with 302 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 3PM (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 Tuesday (Sep 01) at 3PM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 0.8m and 6s. 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 1.8m 7s and forecast to arrive on Saturday (Sep 05) at 9PM. 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 6s period and expected on Thursday (Sep 03) at 12PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Tue 1st Sep) | 3ft (0.9m) 11s |
| Best Surf | 3PM (Tue 1st Sep) | 3ft (0.9m) 11s |
| Most Powerful | 9PM (Sat 5th Sep) | 6ft (1.8m) 7s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, let’s get into it. Things are looking pretty quiet around here for a while, but there’s a bit of a pulse building later on if you’ve got patience.
Right now, the water temp at Shida is sitting at 82°F, which is about average for this time of year with the anomaly around 2°F above normal. Not much to mention there.
The forecast kicks off with a flat spell. From Saturday the 29th of August right through the first few days of September, the surf is pretty much a no-go. Tiny waves, mostly 2 ft to 3 ft from the east and east-southeast, and the wind is all over the place – cross, cross-on, onshore. Combined energy figures are low, between 107 and 255, so there’s just no push. You’re looking at a gap of about 5 days where nothing’s worth paddling out for.
Things start to liven up a little on Tuesday the 1st of September in the afternoon. The swell holds around 3 ft from the east-southeast with a period of 11 seconds, and the wind goes light cross-off from the east-southeast. It’s clean, small, but at least it’s surfable. The combined energy is 255, still moderate. Not a standout, but a sign of life.
Wednesday the 2nd of September sees similar small waves, 2 ft to 3 ft, with clean conditions in the afternoon. Still not much to write home about.
Moving into the first week of September, the swell slowly builds. Thursday the 3rd of September has a bit of a mix – afternoon sees 4 ft from the south-southeast but with a very short period of 6 seconds, so it’s weak and messy. Marginally surfable at best.
The real highlight is shaping up for Monday the 7th of September. That morning, we’ve got 8 ft of east-southeast swell with a 9-second period, cross-off wind from the east-southeast, and combined energy hitting 1050. That’s strong, clean, and just about right for experienced surfers. The 8 ft in the afternoon is a bit bigger but still clean. This is the best window in the whole outlook – groundswell, good shape, solid energy.
Tuesday the 8th of September sees the swell pumping even bigger, 10 ft from the east-southeast with a 12-second period, cross-off wind, and combined energy over 3000. That’s big, powerful, and clean – but it’s too big for most. Only for experts who know what they’re doing. The offshore wind keeps it glassy, but at this size, it’s a serious session.
From Wednesday the 9th of September, the wind starts to shift, and conditions deteriorate. The swell holds around 10 ft to 12 ft, but the wind goes cross-shore, and the quality drops. By Thursday the 10th, the wind cranks up to 18-25 mph from the north-northeast, making it lumpy and messy. This pattern continues right through to the 13th, with strong onshore winds and blown-out conditions. The swell stays big, but it’s not surfable for paddle surfing – more of a kite session if anything.
So, if you’re holding out, the standout is definitely Monday the 7th of September. That morning, Shida sees 8 ft from the east-southeast, clean cross-off wind, and strong energy (1050). It’s the best mix of size and quality in the whole 16-day window. After that, the swell gets too big and the wind turns ugly.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Mon morning. Warm (max 27°C on Tue morning, min 21°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Thu night. Warm (max 28°C on Wed morning, min 23°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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 11 | E 11 | E 11 | E 11 | E 11 | E 11 | ESE 14 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 10 | ESE 7 | SE 6 | E 11 | SSE 6 | SSE 7 | E 9 | ENE 5 | E 6 |
Wave Graph | ||||||||||||||||||||
60 | 58 | 59 | 60 | 56 | 56 | 73 | 175 | 237 | 176 | 167 | 116 | 86 | 93 | 112 | 94 | 76 | 64 | 64 | 99 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | on | on | on | cross | cross-on | cross-on | cross-on | cross-off | cross-on | cross-on | cross-off | off | cross-off | cross-off | on | cross-on | cross-on | cross-on |
High Tide | 5:19PM1.46m | 5:02AM1.47m | 5:37PM1.48m | 5:44AM1.43m | 5:57PM1.49m | 6:29AM1.36m | 6:18PM1.49m | 7:19AM1.27m | 6:41PM1.49m | 8:22AM1.16m | 7:06PM1.46m | 10:01AM1.07m | 7:36PM1.42m | |||||||
Low Tide | 11:10PM0.55m | 11:21AM0.33m | 11:43PM0.45m | 11:48AM0.44m | 00:18AM0.37m | 12:15PM0.58m | 00:57AM0.32m | 12:40PM0.73m | 1:43AM0.31m | 1:03PM0.88m | 2:39AM0.32m | 1:15PM1.01m | ||||||||
— | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | |
6:09 | — | — | 6:08 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — | — | 6:04 | — | — | 6:01 | — | |
mm | 2 | 1 | — | — | 2 | 4 | 1 | — | — | — | — | — | — | 3 | 1 | — | 5 | 2 | 2 | 25 |
Temp °C | 24 | 22 | 24 | 24 | 24 | 24 | 24 | 24 | 27 | 27 | 26 | 28 | 28 | 27 | 26 | 26 | 26 | 24 | 24 | 23 |
Feels °C | 26 | 22 | 25 | 26 | 27 | 26 | 25 | 26 | 30 | 30 | 30 | 32 | 31 | 31 | 27 | 28 | 28 | 27 | 26 | 23 |
Swell 1 Height (m) Direction Period (s) | E 11 | ENE 5 | ENE 5 | E 5 | E 5 | E 11 | ESE 14 | ESE 12 | ESE 12 | ESE 11 | E 7 | ESE 7 | ESE 7 | SE 6 | E 11 | E 10 | SSE 7 | SE 7 | SSE 6 | E 9 |
60 | 23 | 28 | 27 | 28 | 56 | 73 | 175 | 237 | 176 | 94 | 77 | 85 | 93 | 112 | 73 | 76 | 44 | 28 | 27 | |
Swell 2 Height (m) Direction Period (s) | S 8 | SSW 6 | E 11 | E 11 | E 11 | NE 7 | E 11 | E 11 | E 6 | E 6 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | SSW 8 | SE 10 | E 10 | E 9 | E 9 | S 8 |
18 | 23 | 59 | 60 | 56 | 16 | 56 | 36 | 54 | 54 | 167 | 116 | 86 | 54 | 14 | 24 | 71 | 64 | 45 | 23 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | E 11 | SSW 7 | SSW 7 | SSW 7 | SE 9 | SE 9 | SSW 9 | SSW 8 | SSW 9 | SSW 8 | SSW 8 | SSW 8 | E 12 | SE 10 | SSW 8 | SE 10 | SE 9 | SSW 10 | SE 9 |
30 | 58 | 20 | 20 | 18 | 23 | 22 | 16 | 24 | 25 | 14 | 14 | 13 | 47 | 15 | 14 | 14 | 13 | 18 | 21 | |
Wind waves Height (m) Direction Period (s) | ENE 5 | — | — | — | — | E 5 | ENE 6 | ENE 7 | — | — | — | — | — | — | SSE 6 | SSE 6 | — | NE 5 | ENE 5 | E 6 |
37 | — | — | — | — | 26 | 53 | 64 | — | — | — | — | — | — | 61 | 94 | — | 39 | 64 | 99 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 30 | 17 | 17 | 3 | 3 | 216 | 70 | 17 | 3 | 0 | 17 | 17 | 8 | 0 | 561 | 149 | 3 | 3 | 63 | 216 |
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.











