Surf Forecasts:
Shida surf forecast from 26 Aug 2026:
- Best quality surf: Thursday 27 Aug, 12PM (local time) - 5ft (1.6m), 11s period, SW swell with glassy winds.
- Most powerful swell: Thursday 27 Aug, 12PM (local time) - 5ft (1.6m), 11s period, SW swell with 548 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 12PM (local time) - 5ft (1.6m), 11s period with SW 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 (Aug 27) at 12PM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 0.9m and 6s. Another secondary swell of 0.6m and 11s 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 1.6m 11s and forecast to arrive on Thursday (Aug 27) at 12PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Thursday (Aug 27) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 27th Aug) | 5ft (1.6m) 11s |
| Best Surf | 12PM (Thu 27th Aug) | 5ft (1.6m) 11s |
| Most Powerful | 12PM (Thu 27th Aug) | 5ft (1.6m) 11s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at the next 16 days for Shida. Water temps are sitting about average for this time of year, no major anomaly to report.
Right now, we’re in a bit of a lull. Thursday the 27th kicks off with some messy, stormy conditions and a tiny 3 ft SSE swell. It’s surfable but not worth rushing out for. Friday the 28th is a bit cleaner with a light breeze and a small 2 ft easterly swell, but it’s still pretty weak. The weekend, the 29th and 30th, is mostly flat and crummy—cross-on winds, tiny waves, don’t bother.
There’s a real gap here from Thursday through Sunday with nothing worth jumping on. We’re looking at Monday the 31st and Tuesday the 1st of September as more of the same, with poor conditions and small, messy swell.
Then, things start to wake up. Tuesday afternoon the 1st of September is the first real standout. The wind swings offshore from the ESE, clean as a whistle, and we’ve got a solid 4 ft south swell with a 12-second period. The combined energy jumps to 659 (moderate) and the conditions are clean. This is a good window for an intermediate surf session.
Wednesday the 2nd and Thursday the 3rd of September keep that run going. Offshore winds from the S and SSW, clean faces, and the swell holds steady around 4 ft to 4 ft with a 12-second period. Energy is in the 500-600 range. This is as good as it gets in this stretch—consistent, clean, and punchy.
Friday the 4th of September sees a bump in size to 6 ft from the SSE, but the period drops to 9-10 seconds, and the wind is a fresh 18 mph offshore. It’s still clean, but that shorter period makes it a bit more walled-up and less refined. Still, for the experienced surfer, it’s a go.
The weekend of the 5th and 6th of September turns ugly again—cross-on winds, weaker swell, choppy. Another gap.
Then, another promising window opens. Sunday the 6th of September afternoon and Monday the 7th of September are absolute standouts. Offshore winds from the S and SSW, clean, and a 5 ft to 5 ft south swell with a 12-second period. Energy is strong in the 500-750 range. This is the best on offer for the whole forecast. The waves will have good shape, long lines, and the offshore wind will keep them glassy. For intermediate to advanced surfers, this is the prime time.
Tuesday the 8th of September starts to get a bit windier and more marginal, with a fresh 22 mph offshore wind from the S. The swell is still there, but it’s getting blown out.
The second week, from the 9th of September onward, starts to get messy. Strong winds from the SSW on the 9th make it unsurfable. By the 10th and 11th, we’ve got a long-period 14-second south swell coming in at 5 ft to 6 ft, but the wind is cross-on from the NE, ruining the surface. The energy is high (1200-1400), but it’s choppy and messy. For a point break or reef, this long-period groundswell would be a dream, but at a beach break like Shida, it’s going to be a close-out mess. Keep an eye on it, but I wouldn’t bank on it.
So, the best of the best: Tuesday afternoon the 1st of September and the Sunday 6th to Monday 7th of September window. That’s your call to action.
Rusty out.
Short Range ForecastModerate rain (total 19mm), heaviest on Thu morning. Warm (max 29°C on Thu morning, min 24°C on Thu afternoon). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Mon morning. Warm (max 29°C on Mon afternoon, min 25°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | |||||||||||||||
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) | SSE 10 | E 13 | E 13 | E 12 | SW 6 | E 12 | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 | S 13 | S 12 | S 11 | ESE 11 | ESE 11 | S 11 | S 11 | S 11 | S 11 |
Wave Graph | |||||||||||||||||||||
94 | 173 | 163 | 151 | 132 | 99 | 94 | 63 | 58 | 59 | 61 | 56 | 85 | 184 | 224 | 180 | 217 | 303 | 233 | 229 | 224 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-on | cross-off | cross | cross | cross | cross-on | glassy | glassy | glassy | cross-off | cross-off | cross-off | cross | cross-off | cross-off | off | off | off |
High Tide | 4:43PM1.40m | 3:40AM1.45m | 5:00PM1.43m | 4:21AM1.47m | 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 | ||||||||
Low Tide | 9:54AM0.18m | 10:08PM0.78m | 10:24AM0.19m | 10:38PM0.67m | 10:53AM0.24m | 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 | |||||||
5:05 | — | — | 5:05 | — | — | 5:07 | — | — | 5:07 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | |
— | 6:13 | — | — | 6:12 | — | — | 6:09 | — | — | 6:08 | — | — | 6:07 | — | — | 6:06 | — | — | 6:05 | — | |
mm | 10 | 7 | 2 | — | — | — | — | — | — | — | — | — | 1 | — | 1 | — | 1 | 3 | 4 | 1 | 3 |
Temp °C | 29 | 28 | 26 | 28 | 29 | 26 | 27 | 26 | 25 | 26 | 26 | 25 | 28 | 29 | 27 | 28 | 28 | 26 | 29 | 28 | 26 |
Feels °C | 32 | 32 | 29 | 33 | 32 | 29 | 27 | 27 | 26 | 31 | 30 | 29 | 30 | 31 | 31 | 32 | 31 | 30 | 30 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 6 | SSW 6 | E 13 | SSW 6 | SSW 6 | SSW 7 | E 11 | E 11 | ENE 4 | E 11 | SSW 5 | SSW 6 | S 13 | S 12 | S 11 | S 10 | S 10 | S 11 | S 11 | S 11 | S 11 |
56 | 62 | 163 | 60 | 41 | 71 | 94 | 63 | 12 | 59 | 34 | 18 | 85 | 184 | 224 | 172 | 162 | 303 | 233 | 229 | 224 | |
Swell 2 Height (m) Direction Period (s) | SSE 10 | E 13 | S 9 | E 12 | E 12 | E 12 | SSW 6 | SSW 8 | E 11 | ENE 5 | E 11 | E 11 | SSW 5 | NE 7 | NE 7 | ESE 11 | ESE 11 | ESE 11 | E 11 | E 11 | E 10 |
94 | 173 | 85 | 151 | 103 | 99 | 12 | 19 | 58 | 7 | 61 | 56 | 13 | 31 | 25 | 180 | 217 | 205 | 229 | 182 | 123 | |
Swell 3 Height (m) Direction Period (s) | E 11 | SSE 10 | SSW 6 | S 8 | S 8 | SE 9 | SE 11 | SSE 11 | SE 10 | SE 10 | ENE 5 | ENE 5 | E 11 | E 10 | ESE 12 | NE 7 | ENE 8 | NE 8 | SE 10 | SE 9 | SE 10 |
59 | 80 | 27 | 35 | 33 | 23 | 30 | 47 | 27 | 26 | 8 | 9 | 37 | 35 | 58 | 27 | 37 | 55 | 26 | 23 | 24 | |
Wind waves Height (m) Direction Period (s) | SW 6 | SW 6 | — | SW 6 | SW 6 | — | ENE 3 | ENE 5 | — | — | — | NE 4 | SW 5 | SW 4 | SW 5 | — | — | — | — | — | — |
98 | 150 | — | 120 | 132 | — | 8 | 28 | — | — | — | 8 | 28 | 13 | 4 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 1 | 0 | 1 | 0 | 63 | 70 | 63 | 17 | 0 | 0 | 0 | 0 | 7 | 0 | 63 | 0 | 0 | 0 | 0 | 0 |
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.











