Surf Forecasts:
Shida surf forecast from 23 Aug 2026:
- Best quality surf: Monday 24 Aug, 12PM (local time) - 5.5ft (1.7m), 17s period, SSE swell with offshore winds.
- Most powerful swell: Monday 24 Aug, 3PM (local time) - 6ft (1.8m), 16s period, SSE swell with 1,634 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 3AM (local time) - 3ft (0.9m), 12s period with SSE 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 Monday (Aug 24) at 3AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.6m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Shida in the next 16 days are 1.8m 16s and forecast to arrive on Monday (Aug 24) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 6s period and expected on Thursday (Aug 27) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 24th Aug) | 3ft (0.9m) 12s |
| Best Surf | 12PM (Mon 24th Aug) | 5.5ft (1.7m) 17s |
| Most Powerful | 3PM (Mon 24th Aug) | 6ft (1.8m) 16s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, let’s get into it. The next week and a half is a bit of a mixed bag, but there’s a couple of real gems to aim for. The first proper swell hits us on Monday the 24th of August, but the real standout is waiting for you on the weekend into the following week.
First up, Monday morning the 24th at Shida. The wind is dead calm, glassy, and the water is sitting at a pretty average temperature for this time of year, nothing unusual. You’re looking at a clean 3ft SSE groundswell. That long period of 18 seconds means the waves will have proper shape and energy, but it’s not a huge wall of water. The combined energy is moderate (944). This is a great session for intermediates – the crowd can be a factor here, so get in early. It’s a really nice, clean start to the forecast.
Monday afternoon the swell jumps up to 6ft from the SSE with a 16-second period, and the wind goes offshore. The energy level is strong (1741). This is excellent surf, but at 6ft, it’s pushing into the more experienced zone. Beginners might want to watch from the sand. The wind is a moderate offshore breeze, keeping it clean.
Tuesday the 25th stays solid with 6ft SSE swell, but the wind swings cross-offshore. Still clean, but not as pristine as Monday. The energy levels are still strong (1356 on Tuesday morning, 1060 in the afternoon). It’s good surf, but the magic is fading slightly.
Wednesday the 26th through the rest of the week into early September is a real lull. The swell drops, the wind turns onshore or cross-onshore, and the quality plummets. We’re talking about a stretch of 8 to 9 days where the surf is mostly poor or marginal. The energy numbers drop into the low hundreds (284, 240, 198) – weak stuff. The wind is messy, the period drops, and it’s not worth paddling out for anything but a frustration.
Then we get to the real payoff. Saturday the 5th of September afternoon shows a glimmer with a 3ft SSE swell, a 15-second period, and fresh offshore wind. The energy is moderate (911). It’s just a teaser, though.
The true standout hits on Sunday the 6th of September. Both the morning and afternoon produce 5ft SSE swell with a 13-second period, and the wind is offshore, moderate and clean. The combined energy is strong (918 in the morning, 1144 in the afternoon). This is the best on offer in the whole 16-day window. The size is right on the edge of being too big for beginners, but for anyone with a bit of experience, this is a pumping session at Shida. The swell direction is right on the money for the spot. Expect a crowd, because this is the one to wait for.
The 7th and 8th of September stick around with some smaller, more manageable S swell (4ft to 5ft) and clean conditions, but they don’t have the same punch as that Sunday.
So, to sum it up: Monday the 24th is a great, clean start, but Sunday the 6th is the real king of this forecast. Mark your calendar for that one.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Wed morning, min 25°C on Sun night). Winds increasing (calm on Mon morning, fresh winds from the SSW by Tue morning). | Days 5-7 Weather SummaryHeavy rain (total 27mm), heaviest during Thu night. Warm (max 29°C on Thu morning, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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 12 | SSE 18 | SSE 16 | SSE 13 | SSE 13 | SSE 12 | S 12 | SSW 12 | SSW 12 | SSE 10 | SSE 10 | E 13 | E 13 | S 8 | E 12 | E 12 | E 11 | NE 5 | E 12 |
Wave Graph | |||||||||||||||||||
196 | 459 | 1634 | 841 | 903 | 876 | 496 | 228 | 208 | 100 | 98 | 173 | 176 | 112 | 103 | 99 | 93 | 63 | 66 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | glassy | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-off | cross-off | cross-off | on | cross-on | cross-on |
High Tide | 11:30PM1.23m | 3:57PM1.26m | 1:06AM1.26m | 4:09PM1.31m | 2:09AM1.33m | 4:25PM1.36m | 2:57AM1.40m | 4:43PM1.40m | 3:40AM1.45m | 5:00PM1.43m | 4:21AM1.47m | 5:19PM1.46m | |||||||
Low Tide | 8:00AM0.35m | 8:31PM1.08m | 8:45AM0.27m | 9:07PM0.99m | 9:22AM0.21m | 9:38PM0.89m | 9:54AM0.18m | 10:08PM0.78m | 10:24AM0.19m | 10:38PM0.67m | 10:53AM0.24m | 11:10PM0.55m | |||||||
— | 5:03 | — | — | 5:03 | — | — | 5:05 | — | — | 5:05 | — | — | 5:05 | — | — | 5:07 | — | — | |
6:17 | — | 6:16 | — | — | 6:15 | — | — | 6:14 | — | — | 6:13 | — | — | 6:12 | — | — | 6:09 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 7 | 5 | 13 | — | — | — | 2 | — | — |
Temp °C | 26 | 28 | 29 | 26 | 29 | 29 | 27 | 31 | 30 | 27 | 29 | 26 | 24 | 28 | 28 | 26 | 25 | 24 | 23 |
Feels °C | 31 | 30 | 31 | 28 | 29 | 29 | 27 | 33 | 31 | 28 | 32 | 30 | 27 | 29 | 28 | 28 | 27 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SSE 12 | SSE 12 | SSE 16 | SSE 13 | SSE 13 | SSE 12 | S 12 | SSE 10 | SSE 9 | SSE 10 | SSE 10 | E 13 | S 6 | S 8 | S 8 | S 8 | SSW 8 | SSW 8 | E 12 |
196 | 226 | 1634 | 841 | 903 | 876 | 496 | 176 | 156 | 100 | 98 | 173 | 84 | 105 | 80 | 63 | 68 | 51 | 66 | |
Swell 2 Height (m) Direction Period (s) | E 9 | SSE 18 | E 12 | SSE 16 | ESE 14 | ESE 13 | SSE 10 | SSW 12 | SSW 12 | SSW 12 | ESE 11 | S 9 | E 13 | E 12 | E 12 | E 12 | E 11 | E 11 | SSW 9 |
57 | 459 | 71 | 547 | 201 | 184 | 123 | 228 | 208 | 78 | 38 | 41 | 166 | 112 | 103 | 99 | 93 | 63 | 25 | |
Swell 3 Height (m) Direction Period (s) | ESE 12 | SSE 15 | E 8 | ESE 11 | S 16 | — | ESE 13 | ESE 12 | ESE 12 | E 12 | ESE 14 | SSE 10 | S 9 | SE 9 | SE 9 | SSE 10 | SE 11 | SSE 11 | SE 10 |
50 | 259 | 36 | 103 | 252 | — | 176 | 117 | 113 | 70 | 68 | 40 | 41 | 23 | 23 | 18 | 30 | 47 | 27 | |
Wind waves Height (m) Direction Period (s) | — | — | — | SW 4 | SSW 4 | SSW 4 | SW 5 | SW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | — | SSW 7 | SW 5 | NNE 3 | NE 5 | NE 5 |
— | — | — | 15 | 24 | 40 | 45 | 19 | 39 | 124 | 80 | 95 | 176 | — | 79 | 29 | 7 | 49 | 57 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 91 | 91 | 565 | 1 | 7 | 592 | 1 | 0 | 3 | 17 | 1 | 303 | 0 | 3 | 63 | 3 |
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.











