
Surf Forecasts:
Shida surf forecast from 15 Jul 2026:
- Best quality surf: Monday 20 Jul, 9PM (local time) - 5ft (1.5m), 12s period, E swell with cross-offshore winds.
- Most powerful swell: Tuesday 21 Jul, 12AM (local time) - 5ft (1.6m), 12s period, E swell with 714 kJ wave energy.
- Next surfable swell (1★+): Thursday 16 Jul, 3AM (local time) - 2.5ft (0.8m), 9s 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 Thursday (Jul 16) at 3AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.1m and 11s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Shida in the next 16 days are 1.6m 12s and forecast to arrive on Tuesday (Jul 21) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Thursday (Jul 16) at 3AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 16th Jul) | 2.5ft (0.8m) 9s |
| Best Surf | 9PM (Mon 20th Jul) | 5ft (1.5m) 12s |
| Most Powerful | 12AM (Tue 21st Jul) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s get into what’s happening at Shida. It’s a bit of a slow start, but there’s some promise down the line.
The week kicks off Thursday, July 16th, with small, weak surf. We’re looking at 3ft of swell from the ESE with a short period of just 8 seconds, combined energy is weak at (107). A southerly offshore is blowing at 9 mph, so it’ll be clean, but honestly, these are just ordinary waves. Nothing to get excited about.
Friday, July 17th, is a write-off. The swell doesn’t shift much, still around 3ft, but the wind goes cross-offshore and the surf quality drops to poor. Saturday, July 18th, starts slow but has a turnaround. The morning is still ordinary with 4ft swell, but by the afternoon, the wind turns offshore from the SSE at 12 mph, the swell picks up just a touch to 3ft, and the energy bumps to (273). The comment says “expect good surf conditions,” and that’s the first real sign of life.
From Sunday, July 19th, through Tuesday, July 21st, things build nicely. Sunday morning has 4ft swell from the ESE, 9-second period, with a light cross-off wind and clean waves. By Monday, July 20th, we see 4–4ft from the E, with clean conditions and offshore winds, moderate wave energy in the (258–366) range. Then Tuesday, July 21st, is a standout. The swell hits 5ft from the East with a longer 12-second period, giving us moderate energy (620) and clean, gentle offshore winds from the SSW. This is the best day of the first week – solid, clean, and rideable.
Wednesday, July 22nd, takes a hit. A risk of thunderstorms and onshore winds from the NE at 16 mph chop things up. Poor conditions, so skip that.
The surf cleans up again from Thursday, July 23rd, into the weekend. Thursday afternoon brings cross-offshore winds and 4ft swell, and by Friday, July 24th, we’re back to offshore winds and clean 3–4ft swell from the E. Saturday, July 25th, keeps that trend going with 3ft swell and offshore winds. Solid little run of clean, small waves.
Now, looking into the second week, starting Sunday, July 26th, the swell drops to 2–2ft and the wind turns cross-off, so it’s poor again. Monday, July 27th, sees the swell come back up to 4–5ft from the SSE with a longer 12-second period, but the energy is moderate to strong (471–585). The catch is the wind is a strong cross-off at 19 mph, and the forecast calls it “marginal” – could be tricky.
Tuesday, July 28th, brings a bigger swell – 5–6ft from the South with a 13–14 second period. That’s strong energy (1004–1340), but the wind is still cross-off and strong. It’s going to be big, powerful, and possibly unruly. That’s more for experienced surfers.
The best bet in the second week is Wednesday, July 29th. Swell drops to 4–4ft from the South with a solid 13-second period, and the wind turns offshore from the SSW at 16 mph. The energy is strong (827) and it’s clean. The morning looks excellent, with very good surf conditions. That’s your second standout.
Thursday, July 30th, stays clean with 4ft from the ENE, short 8-second period, but strong offshore winds and moderate energy (585–597). Good, fun waves.
Overall, the standout day is Tuesday, July 21st – clean, 5ft East swell with a nice 12-second period, gentle offshore wind. The other top pick is Wednesday, July 29th – clean, offshore winds, 4ft South swell with a long 13-second groundswell. That’s one for the reef and point crew.
Now, about the water temp – it’s about average for this time of year, nothing wild there.
Crowds at Shida are listed as “often,” so on those good days, expect plenty of company out there.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Thu night. Warm (max 28°C on Thu morning, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Tue morning, min 24°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wed 22 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | E 9 | ESE 8 | ESE 9 | ESE 8 | E 8 | E 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 10 | E 12 | E 12 | E 11 | E 11 | E 11 | E 11 |
Wave Graph | |||||||||||||||||||||
99 | 96 | 99 | 118 | 116 | 90 | 115 | 176 | 169 | 206 | 266 | 248 | 189 | 241 | 314 | 714 | 586 | 566 | 457 | 379 | 317 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | off | cross-off | off | off | cross-off | off | off | cross-off | cross-on | cross-on |
High Tide | 4:15AM1.54m | 6:35PM1.43m | 5:07AM1.50m | 7:03PM1.43m | 5:58AM1.43m | 7:29PM1.42m | 6:50AM1.32m | 7:54PM1.41m | 7:46AM1.20m | 8:19PM1.40m | 8:53AM1.09m | 8:46PM1.39m | 10:25AM1.01m | ||||||||
Low Tide | 10:59PM0.98m | 11:31AM-0.03m | 11:44PM0.89m | 12:09PM0.08m | 00:29AM0.80m | 12:44PM0.22m | 1:16AM0.71m | 1:17PM0.39m | 2:06AM0.64m | 1:46PM0.56m | 3:00AM0.58m | 2:13PM0.72m | 4:00AM0.54m | 2:39PM0.87m | |||||||
— | 4:33 | — | — | 4:35 | — | — | 4:35 | — | — | 4:35 | — | — | 4:37 | — | — | 4:37 | — | — | 4:39 | — | |
6:53 | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | |
mm | — | — | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | 1 | — |
Temp °C | 27 | 28 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 28 | 25 | 29 | 29 | 26 | 26 | 26 |
Feels °C | 28 | 32 | 30 | 29 | 29 | 29 | 29 | 29 | 28 | 27 | 29 | 29 | 28 | 30 | 29 | 27 | 32 | 31 | 29 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | E 9 | ESE 8 | ESE 9 | ESE 8 | E 8 | E 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 10 | E 12 | E 12 | E 11 | E 11 | E 11 | E 11 |
99 | 96 | 99 | 118 | 116 | 90 | 115 | 176 | 169 | 206 | 266 | 248 | 189 | 241 | 314 | 714 | 586 | 566 | 457 | 379 | 317 | |
Swell 2 Height (m) Direction Period (s) | SSE 9 | SSW 9 | SSW 8 | SE 10 | SE 10 | SE 9 | SE 8 | SE 9 | SSE 8 | SE 8 | S 8 | S 8 | SE 7 | SSE 8 | SSE 8 | S 8 | SSE 8 | SSE 8 | SSE 8 | SSW 6 | SSW 6 |
8 | 7 | 7 | 15 | 23 | 22 | 25 | 20 | 27 | 15 | 10 | 5 | 14 | 13 | 14 | 21 | 13 | 12 | 6 | 11 | 6 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | S 14 | SE 11 | SSW 8 | SSW 8 | SSW 8 | SW 8 | SW 7 | SE 13 | S 8 | SE 12 | SE 12 | S 8 | S 7 | E 15 | — | SE 12 | — | SE 12 | SSE 8 | SSE 11 |
5 | 4 | 18 | 6 | 6 | 6 | 3 | 2 | 7 | 5 | 6 | 6 | 10 | 4 | 38 | — | 21 | — | 6 | 6 | 12 | |
Wind waves Height (m) Direction Period (s) | S 5 | S 5 | S 5 | SSE 5 | SSE 5 | SSE 5 | SSW 4 | SSE 4 | SE 8 | — | — | — | — | — | S 3 | S 8 | SSW 3 | SSW 4 | SSW 4 | NE 4 | ENE 5 |
76 | 33 | 27 | 23 | 30 | 28 | 6 | 12 | 70 | — | — | — | — | — | 1 | 34 | 5 | 26 | 21 | 10 | 39 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 155 | 0 | 0 | 0 | 115 | 608 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 608 | 115 |
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.











