
Surf Forecasts:
Shida surf forecast from 31 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 6AM (local time) - 13ft (4.0m), 16s period, SE swell with onshore winds.
- Most powerful swell: Thursday 6 Aug, 3AM (local time) - 15ft (4.5m), 17s period, SSE swell with 10,298 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 6AM (local time) - 1.5ft (0.4m), 10s period with SE 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 01) at 6AM. The primary swell is predicted to be 0.4m and 10s period with a secondary swell of 0.4m and 6s. Another secondary swell of 0.4m and 8s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Shida in the next 16 days are 4.5m 17s and forecast to arrive on Thursday (Aug 06) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Saturday (Aug 01) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sat 1st Aug) | 1.5ft (0.4m) 10s |
| Best Surf | 6AM (Wed 5th Aug) | 13ft (4.0m) 16s |
| Most Powerful | 3AM (Thu 6th Aug) | 15ft (4.5m) 17s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let's cut through the noise and get straight to what matters. This 16-day window for Shida is a proper mixed bag, a real tale of two halves. We're looking at a spot that's normally a bit inconsistent anyway, so we've gotta be patient and pick our moments.
The first few days are pretty grim, with clean, weak surf and an onshore breeze messing things up. The energy in the water is weak, around 63, and that 2ft swell just doesn't have any push. It's the kind of thing you'd paddle out for if you were desperate, but you wouldn't be stoked about it.
Then things get properly messy. The swell builds, but so does the wind. We're looking at a couple of days of cross-onshore winds and building, lumpy surf. By Tuesday and Wednesday of next week, the swell is proper solid—we're talking 13ft—but it's blown out and way too big for this place. The energy readings are huge, hitting over 8,000 and even 9,000, but it's all for nothing. It's a washing machine, and I'd be looking elsewhere.
Now, here's where it gets interesting. Towards the end of that first week, around Thursday the 6th and into Friday the 7th of August, the swell drops back to a more manageable size, and the wind swings offshore. That's when Shida starts to show its true colors. Friday the 7th is looking like the standout. We've got a clean 8-8ft swell from the S, with a solid 14-second period, and light offshore winds. The energy is strong at 2,265. This is proper surf, not for the faint of heart, but for the experienced crew, it's going to be firing. It's a bit of a heavy wave, so it's experts-only at that size, but what a session it could be.
Saturday the 8th, the swell eases into that 3-5ft range, still with that clean, offshore feel. It's not as powerful, but it's a much more user-friendly size and the conditions are still glassy. A great option for the intermediate surfer or anyone who wants to get a few in without the beating.
But then, the wheels fall off again. From Sunday the 9th onward, it's a story of onshore winds, lumpy conditions, and a jumbled swell. The wind swings around and just kills it. There are a couple of days with some size, but the wind is howling from the NNE. The water's a mess. It's not worth your time.
The long-range stuff, into the second week, is pretty bleak. We're looking at a lot of poor, wind-affected surf. The swell is there, but the conditions just aren't. Keep an eye on it, but I wouldn't be booking any time off for it.
Water temp here is 79°, which is pretty much spot on for this time of year. No surprises there.
So, to sum it up: if you're looking for clean, powerful surf, that window from Friday the 7th to Saturday the 8th is your best bet. It's a classic case of waiting for the wind to play nice. The Friday is the real standout, bigger and more powerful, while the Saturday is a touch smaller but still clean. Other than that, it's a lot of waiting and watching.
Remember, this is Shida, so it doesn't stay flat for long. Forecasts change. But right now, that's the picture.
Catch you in the water.
Rusty
Short Range ForecastMostly dry. Warm (max 29°C on Fri afternoon, min 23°C on Sun night). Winds increasing (calm on Sat morning, fresh winds from the NE by Sun afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Thu morning, min 23°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | ||||||||||||||
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 6 | SE 9 | SE 11 | SE 16 | SE 18 | SE 16 | SE 15 | SE 16 | SE 17 | SE 18 | SE 17 | SE 16 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 17 | SSE 16 | S 16 | S 15 |
Wave Graph | ||||||||||||||||||||
41 | 31 | 29 | 93 | 152 | 560 | 631 | 1164 | 2330 | 3723 | 6177 | 5920 | 8077 | 7710 | 8671 | 9160 | 10206 | 9742 | 6667 | 3582 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | glassy | off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off |
High Tide | 6:10PM1.41m | 5:04AM1.44m | 6:31PM1.43m | 5:46AM1.40m | 6:53PM1.44m | 6:31AM1.34m | 7:15PM1.44m | 7:22AM1.25m | 7:38PM1.44m | 8:23AM1.15m | 8:04PM1.43m | 9:51AM1.06m | 8:36PM1.41m | |||||||
Low Tide | 11:34PM0.79m | 11:50AM0.19m | 00:10AM0.71m | 12:19PM0.28m | 00:48AM0.63m | 12:47PM0.41m | 1:30AM0.56m | 1:15PM0.56m | 2:18AM0.49m | 1:44PM0.72m | 3:16AM0.44m | 2:11PM0.89m | ||||||||
— | — | 4:46 | — | — | 4:47 | — | — | 4:47 | — | — | 4:48 | — | — | 4:48 | — | — | 4:50 | — | — | |
6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 27 | 29 | 29 | 28 | 27 | 26 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 26 | 26 | 26 | 29 | 29 | 26 |
Feels °C | 33 | 31 | 33 | 33 | 33 | 29 | 26 | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 27 | 28 | 30 | 31 | 32 | 30 |
Swell 1 Height (m) Direction Period (s) | S 6 | S 6 | S 6 | S 6 | ESE 10 | SE 16 | SE 15 | SE 16 | SE 17 | SE 18 | SE 17 | SE 16 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 17 | SSE 16 | S 16 | S 15 |
41 | 29 | 16 | 17 | 67 | 560 | 631 | 1164 | 2330 | 3723 | 6177 | 5920 | 8077 | 7710 | 8671 | 9160 | 10206 | 9742 | 6667 | 3582 | |
Swell 2 Height (m) Direction Period (s) | SE 9 | NE 8 | SE 11 | ESE 10 | S 6 | ESE 9 | ESE 9 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | — | E 11 | E 10 | E 16 | ESE 10 | ESE 10 |
13 | 14 | 29 | 36 | 18 | 48 | 49 | 37 | 34 | 61 | 93 | 90 | 30 | 86 | — | 410 | 228 | 20 | 157 | 137 | |
Swell 3 Height (m) Direction Period (s) | NE 8 | SE 9 | NE 8 | SE 16 | SE 18 | SSW 6 | E 15 | — | — | — | — | — | — | — | — | — | E 12 | ENE 16 | E 16 | E 15 |
9 | 31 | 14 | 93 | 152 | 10 | 38 | — | — | — | — | — | — | — | — | — | 69 | 51 | 20 | 41 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NE 3 | NE 4 | NE 6 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | — | — | — | — | — | — |
— | — | — | — | — | 6 | 45 | 102 | 199 | 244 | 355 | 250 | 334 | 240 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 63 | 74 | 216 | 85 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 115 | 63 |
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.











