Surf Forecasts:
Shida surf forecast from 30 Aug 2026:
- Best quality surf: Wednesday 2 Sep, 6AM (local time) - 3ft (0.9m), 11s period, ESE swell with glassy winds.
- Most powerful swell: Sunday 6 Sep, 9AM (local time) - 3.5ft (1.1m), 15s period, S swell with 566 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 6AM (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 6AM. 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 glassy as the swell arrives.
The most powerful waves expected at Shida in the next 16 days are 1.1m 15s and forecast to arrive on Sunday (Sep 06) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Friday (Sep 04) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 2nd Sep) | 3ft (0.9m) 11s |
| Best Surf | 6AM (Wed 2nd Sep) | 3ft (0.9m) 11s |
| Most Powerful | 9AM (Sun 6th Sep) | 3.5ft (1.1m) 15s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
G’day, Rusty here. We’re looking at a classic early-spring run for Shida, and to be honest, the first few days are a write-off. Sunday the 30th and Monday the 31st are a total loss—cross-onshore wind, choppy, weak little 2ft east swell, and the combined energy is barely a whisper at 104 to 204. You’d be better off doing anything else. Tuesday the 1st of September is no better, with the same messy wind and poor surf conditions. The water temp is a warm 82°F, which is about one degree above the norm for this time of year—nothing wild, just a touch of summer still hanging around.
Then we get a glimmer. Wednesday morning the 2nd of September, the wind goes glassy, the swell bumps to 3ft from the ESE with a 10-second period, and the combined energy hits a modest 203. The break is inconsistent and only rated for intermediate surfers, but for a few hours Wednesday morning, it’s glassy and clean. That is the only proper window in the first week. After that, Thursday gets a clean offshore wind from the SSW, but the swell is a messy 4ft with a short 6-second period—more of a choppy lump than a wave. Friday the 4th and Saturday the 5th are back to crap.
Now here’s where it gets interesting, but also a bit of a trap. Sunday the 6th of September sees a massive jump in energy: 1127 to 1278, with a 5ft SE swell at 12 seconds. But the wind is cross-shore and lumpy, and the surf quality is still marginal. Then Monday the 7th of September delivers the biggest swell of the window—10ft to 12ft from the east, with moderate wave energy (2688 to 4250). The wind is offshore and clean. But here’s the catch: the guidance says this break is exposed, and for that size, it’s predicted to be too big for this spot. This is expert-only territory, and with a 9 to 10-second period, it won’t be the long, lined-up groundswell you’d want for a reef. It’ll be a churning wall of whitewater. Not one for the average punter.
Tuesday the 8th of September drops to 8ft from the east, but the wind is onshore and the conditions are marginal. By Wednesday the 9th, it’s back to strong cross-onshore winds and lumpy, ugly surf, despite the size. The rest of the second week is a mess of heavy rain, thunderstorms, and strong winds, with the swell dropping back to 3–4ft but never getting clean. The combined energy readings are high (up to 3941) but it’s all wind-swamp and chop.
The standout: If you’re an expert and you can handle big, punishing waves, the early part of Monday the 7th of September might offer a raw, powerful session, but it’s not for the faint-hearted and crowds are often around. For the rest of us, Wednesday morning the 2nd of September is the only real highlight—small, glassy, fun for an intermediate. It’s a one-day wonder.
That’s it from me. Stay salty.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Sun morning. Warm (max 27°C on Tue morning, min 24°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Thu night. Warm (max 30°C on Thu morning, min 21°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | |||||||||||||||
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 11 | E 11 | E 11 | SE 14 | ESE 14 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | ESE 11 | SSW 9 | SSE 6 | S 6 | S 6 | NE 5 | E 9 | E 6 | E 7 | S 15 |
Wave Graph | |||||||||||||||||||||
59 | 60 | 56 | 56 | 73 | 175 | 237 | 214 | 170 | 118 | 114 | 126 | 106 | 127 | 176 | 94 | 52 | 43 | 138 | 192 | 221 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | on | glassy | off | off | cross-off | off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 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 | 8:18PM1.36m | |||||||||
Low Tide | 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 | 3:57AM0.35m | |||||||||
5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | |
— | 6:08 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — | — | 6:04 | — | — | 6:01 | — | — | 6:00 | — | |
mm | 1 | — | — | 1 | — | — | — | — | — | — | — | 1 | — | — | 5 | — | — | 2 | 4 | 10 | 10 |
Temp °C | 25 | 25 | 24 | 25 | 25 | 24 | 27 | 26 | 26 | 28 | 28 | 27 | 30 | 29 | 27 | 24 | 24 | 23 | 21 | 21 | 23 |
Feels °C | 27 | 27 | 26 | 26 | 26 | 25 | 30 | 28 | 31 | 31 | 31 | 31 | 30 | 29 | 28 | 25 | 24 | 23 | 20 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | E 11 | E 5 | E 11 | E 11 | ESE 14 | ESE 12 | ESE 12 | ESE 11 | ESE 11 | ESE 7 | ESE 6 | ESE 11 | E 10 | E 10 | E 10 | S 6 | S 6 | SE 6 | E 9 | SSE 15 | ESE 8 |
59 | 23 | 56 | 56 | 73 | 175 | 237 | 214 | 170 | 63 | 56 | 126 | 106 | 73 | 71 | 94 | 28 | 32 | 26 | 76 | 220 | |
Swell 2 Height (m) Direction Period (s) | SSW 7 | E 11 | SSW 7 | NE 7 | E 11 | E 10 | SSW 8 | ENE 6 | E 7 | ESE 10 | ESE 10 | SSW 8 | S 6 | SE 10 | SE 10 | E 9 | SE 7 | E 9 | SSW 9 | SSW 9 | S 15 |
21 | 60 | 10 | 16 | 56 | 35 | 24 | 26 | 63 | 118 | 114 | 21 | 39 | 15 | 15 | 45 | 27 | 43 | 16 | 16 | 221 | |
Swell 3 Height (m) Direction Period (s) | SE 10 | SSW 7 | SE 10 | SE 14 | SE 9 | SSW 9 | ESE 15 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SE 10 | ESE 7 | E 16 | SW 12 | SE 9 | E 9 | SE 9 | SSE 16 | ENE 13 | SSE 13 |
26 | 21 | 26 | 51 | 22 | 16 | 21 | 14 | 14 | 22 | 22 | 15 | 34 | 5 | 6 | 21 | 43 | 20 | 26 | 17 | 116 | |
Wind waves Height (m) Direction Period (s) | ENE 5 | — | E 4 | E 4 | ENE 6 | ENE 6 | ENE 6 | — | — | — | S 2 | SE 6 | SSW 9 | SSE 6 | S 6 | NNE 3 | NE 5 | ENE 5 | E 6 | E 7 | NE 6 |
36 | — | 10 | 14 | 53 | 53 | 42 | — | — | — | 1 | 75 | 101 | 127 | 176 | 3 | 52 | 27 | 138 | 192 | 104 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 23 | 27 | 3 | 216 | 70 | 23 | 30 | 63 | 3 | 0 | 0 | 0 | 147 | 153 | 0 | 63 | 63 | 30 | 561 | 583 | 544 |
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.











