
Surf Forecasts:
Shida surf forecast from 30 Jul 2026:
- Best quality surf: Tuesday 4 Aug, 9PM (local time) - 13ft (4.0m), 16s period, SE swell with cross-onshore winds.
- Most powerful swell: Thursday 6 Aug, 3AM (local time) - 15ft (4.5m), 17s period, SSE swell with 11,634 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 12PM (local time) - 1.5ft (0.4m), 9s 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 Thursday (Jul 30) at 12PM. The primary swell is predicted to be 0.4m and 9s period with a secondary swell of 0.5m 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 4.5m 17s and forecast to arrive on Thursday (Aug 06) 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 0.7m 6s period and expected on Thursday (Jul 30) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 30th Jul) | 1.5ft (0.4m) 9s |
| Best Surf | 9PM (Tue 4th 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, let’s get into it. This is Rusty, and I’m looking straight at the Shida forecast for the next couple of weeks. Right now, there isn’t much to get excited about. We’ve got a slow, drawn-out start with very weak, inconsistent swell, and it’s going to take a while before anything worthwhile shows up. There’s a big run of days where the conditions are just ordinary or poor, but things do eventually turn around for a good window if you’re patient.
The first real surf on offer is on Thursday the 30th of July. It’s small. We’re talking about 1 ft SE swell with a short period of 9 seconds. The combined energy is weak at 67. The morning starts with some clouds and a light SSE breeze at 5 mph blowing cross-offshore, so the surface is clean. This is surfable, but it’s small and unremarkable. The water temperature is a very warm 79°, which is about average for the time of year.
Thursday afternoon picks up a touch to 3 ft from the SSW, but the wind goes offshore from the south at 10 mph. Still clean, but the combined energy only bumps up to moderate at 115. It’s still very ordinary. Friday the 31st is a mess. Morning has cross-on winds and poor surf. Afternoon is a little cleaner but still weak.
From Saturday the 1st of August through the middle of the week, the swell tries to build but the wind is all wrong. We get a long-period SE groundswell coming in with a period of 16 seconds on Saturday afternoon. The combined energy jumps to 146, but it’s still weak to moderate. The problem is the cross-on winds starting to pick up.
Then from Sunday the 2nd into Friday the 7th of August, the swell really ramps up. Sunday morning shows 4 ft of SE swell with 16-second period, and the combined energy is already moderate at 650. But the wind is cross-on and strengthening. By Monday the 3rd, the swell hits 7 ft with 17-second period, energy is very strong at 2790. But the wind is a stiff cross-on at 15-18 mph, making it choppy and lumpy. This continues through the week. The swell peaks on Wednesday the 5th with a 13 to 15 ft SSE swell, period at 16 seconds, and the energy is huge—over 10000. The problem is it’s simply too big for this break, and the wind is either cross or cross-on. This setup is really more for the kite surfers than paddle surfers at this point. The conditions are clean-ish on Wednesday and Thursday, but the size is just overwhelming for Shida.
Now, here’s the standout. Friday the 7th of August. This is the best of this whole forecast window. The swell has dropped to a still powerful 8-8 ft from the south, with a 14-second period. The combined energy is very strong at 2482 to 2844. The wind finally plays ball. It’s a gentle ESE breeze at 9 mph blowing cross-offshore. That makes for clean conditions. This is for experienced surfers only—over 8 ft is expert territory. That southeast direction fits well with the optimum for Shida, and with that long period and clean wind, the waves should have real shape and power. Crowds are possible here, so keep an eye out.
The week after that drops off again. Saturday the 8th of August afternoon has a cleaner 4 ft swell from the ESE with a 12-second period, energy over 1000, and cross-off wind. Sunday the 9th afternoon is similar with 5 ft ESE swell and clean conditions. These are decent but not the standouts like Friday. The following week from Monday the 10th onward is mostly a write-off with fresh cross-on winds, choppy surface, and poor conditions, though the swell hangs around the 4-5 ft range, just ruined by the wind.
So, overall, the best wave this period is hands down Friday the 7th of August. Swell of 8-8 ft from the south, long 14-second period, combined energy of 2844, and cross-off wind making it clean for the experts. If you can’t surf it, the Saturday and Sunday afternoons after that are the next best bet, but they’re a step down. The start of the period is a grind with weak, inconsistent surf and then a big pulse that’s either too big or blown out.
- Rusty
Short Range ForecastMostly dry. Warm (max 30°C on Thu morning, min 26°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 28°C on Sun morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 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) | SE 9 | SSW 6 | SW 6 | SSW 7 | S 7 | SE 9 | SE 11 | SE 16 | SE 15 | SE 16 | SE 15 | SE 17 | SE 17 | SE 17 | SE 16 | SE 16 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 17 |
Wave Graph | |||||||||||||||||||||
31 | 52 | 73 | 62 | 44 | 22 | 29 | 93 | 109 | 546 | 820 | 1859 | 2726 | 3597 | 3916 | 5277 | 6397 | 8364 | 9614 | 9662 | 11362 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | glassy | cross-on | cross-off | cross | cross-on | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross | cross |
High Tide | 5:48PM1.39m | 4:24AM1.46m | 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 | ||||||||
Low Tide | 10:50AM0.11m | 11:00PM0.87m | 11:21AM0.13m | 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 | ||||||||
4:43 | — | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | 4:47 | — | — | 4:48 | — | — | 4:48 | — | — | |
— | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Temp °C | 30 | 29 | 27 | 29 | 29 | 27 | 29 | 29 | 27 | 28 | 26 | 24 | 26 | 25 | 23 | 26 | 26 | 25 | 28 | 28 | 26 |
Feels °C | 33 | 32 | 31 | 32 | 31 | 31 | 33 | 33 | 31 | 31 | 26 | 24 | 25 | 24 | 22 | 26 | 26 | 27 | 30 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | S 7 | S 6 | SSW 6 | SSW 7 | S 7 | SSW 6 | S 6 | ESE 10 | ESE 10 | SE 16 | SE 15 | SE 17 | SE 17 | SE 17 | SE 16 | SE 16 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 17 |
24 | 20 | 30 | 62 | 44 | 16 | 9 | 42 | 67 | 546 | 820 | 1859 | 2726 | 3597 | 3916 | 5277 | 6397 | 8364 | 9614 | 9662 | 11362 | |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | NE 8 | SE 11 | SSW 6 | SE 15 | ESE 10 | SE 9 | E 14 | E 14 | E 14 | SE 22 | ENE 13 | E 13 | E 13 | E 11 | E 12 | E 11 |
31 | 31 | 22 | 30 | 13 | 15 | 29 | 11 | 104 | 61 | 39 | 65 | 34 | 61 | 471 | 139 | 54 | 86 | 287 | 171 | 375 | |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | SE 9 | NE 7 | SE 16 | SE 18 | E 16 | E 15 | — | — | — | E 14 | — | — | — | — | — | ENE 16 |
12 | 12 | 5 | 13 | 6 | 22 | 14 | 93 | 109 | 43 | 38 | — | — | — | 58 | — | — | — | — | — | 26 | |
Wind waves Height (m) Direction Period (s) | — | SSW 6 | SW 6 | — | — | — | — | — | — | — | ENE 7 | NE 4 | NE 5 | NE 4 | — | — | — | — | — | E 11 | E 10 |
— | 52 | 73 | — | — | — | — | — | — | — | 10 | 14 | 30 | 29 | — | — | — | — | — | 524 | 533 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 17 | 0 | 17 | 17 | 0 | 0 | 17 | 115 | 63 | 63 | 216 | 85 | 216 | 63 | 63 | 63 | 74 | 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.










