
Surf Forecasts:
Shida surf forecast from 16 Jul 2026:
- Best quality surf: Saturday 18 Jul, 6PM (local time) - 3.5ft (1.0m), 9s period, E swell with offshore winds.
- Most powerful swell: Tuesday 21 Jul, 6AM (local time) - 4.5ft (1.3m), 11s period, E swell with 394 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 12AM (local time) - 3ft (0.9m), 8s 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 Friday (Jul 17) at 12AM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.3m and 10s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Shida in the next 16 days are 1.3m 11s and forecast to arrive on Tuesday (Jul 21) at 6AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 5s period and expected on Friday (Jul 17) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 17th Jul) | 3ft (0.9m) 8s |
| Best Surf | 6PM (Sat 18th Jul) | 3.5ft (1.0m) 9s |
| Most Powerful | 6AM (Tue 21st Jul) | 4.5ft (1.3m) 11s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright, Rusty here, giving you the straight-up word on Shida.
Overall, we’re looking at a decent run of small to medium surf kicking off this Thursday afternoon, but nothing that screams epic. The best windows of clean, rideable waves are going to be Sunday the 19th through Tuesday the 21st, with a few other promising sessions later in the month. There’s a bit of a flat patch and some windy days to work around, but the ocean is going to deliver enough to get wet.
Starting this Thursday afternoon, July 16th, we’ve got some small 3 ft ESE swell with a moderate offshore breeze. The combined swell energy is 109 (weak) – it’s surfable, but very ordinary. Not the day to call in sick for. Friday the 17th sees a touch more size, about 3 ft to 4 ft, but the wind is a bit tricky with cross-off conditions and the period is short at 8 seconds. The energy picks up to 201 (moderate) by the afternoon, but conditions are still just marginal. Saturday the 18th is much the same – 3 ft, cross-off wind, nothing special.
Now, Sunday the 19th is where it gets interesting. We get a clean 4 ft SSE swell with a gentle offshore breeze from the south. The energy climbs to 233 (moderate) in the morning and 287 (moderate) in the afternoon. Expect good surf conditions. This is one of the standout windows. The break at Shida faces SE, and the swell is coming from just east of that, so it lines up nicely.
Monday the 20th keeps it going. Morning is 3 ft E swell with light offshore wind, but the afternoon is where it’s at: 4 ft E swell with a 10-second period, a moderate offshore breeze, and a strong 288 (moderate) combined energy. Clean, fun waves. Tuesday the 21st is the best of the early run – 4 ft E swell, a solid 11-second period, and glassy light offshore wind. Combined energy hits 425 (moderate-strong). The waves will have some punch and shape. That’s the morning to be out.
Things go downhill Wednesday the 22nd with a strong cross-onshore wind from the NE at 15 mph, making it choppy. Poor surf. The wind turns tricky through the 23rd and 24th, with a brief window of clean 4 ft E swell Thursday the 23rd afternoon, but mostly smaller, blown-out dribble. On Saturday the 25th, a very long-period 16-second SE swell rolls in, but it’s tiny at 1 ft and winds are strong. That kind of period would usually mean quality, but there’s no size to work with.
Hold on for Sunday the 26th afternoon – a clean 3 ft SE swell with a 14-second period, light ESE cross-off wind, and combined energy of 259 (moderate). The long period will make it better for a point or reef, but it’s still small. Then, Monday the 27th is a big highlight. Morning starts with 4 ft SSE swell, 10-second period, nearly glassy conditions (3 mph SE), and energy of 320 (moderate-strong). Afternoon is 4 ft SSE, light offshore SSE wind, 10-second period, and even more energy at 344 (moderate-strong). This is the second standout session – clean, punchy, and easy paddling.
Tuesday the 28th keeps the clean offshore wind going with 3 ft to 4 ft S swell, but the real spike comes Wednesday the 29th. The morning brings a 5 ft SSW swell with an 11-second period and a combined energy of 822 (strong). That’s the biggest energy of the whole forecast, but the conditions are described as marginal, and it could be a bit much for a beach break if it’s too straight. Still, for an experienced surfer, that’s a session to watch.
The tail end of the month gets messy. Strong winds from the 30th and 31st with offshore directions but fresh to strong speeds (15-22 mph) make for clean but blown-out conditions on the surface. The swell is there, 3 ft to 4 ft, but the wind is going to make it a battle. Best to sit those out.
So, to sum it up clean and simple: your two best bets are Sunday the 19th for that first clean run of decent swell, and Monday the 27th for the best combination of size, direction, and glassy wind. The water temp is 77°F with a near-normal anomaly, so it’s about average for this time of year – no surprise there.
Crowds at Shida can be often, so expect company on those good days.
Signing off,
Rusty
Short Range ForecastLight rain (total 3mm), mostly falling on Thu night. Warm (max 28°C on Thu afternoon, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Warm (max 29°C on Tue morning, min 24°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||
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) | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 10 | E 10 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 |
Wave Graph | ||||||||||||||||||||
99 | 118 | 120 | 173 | 122 | 120 | 140 | 185 | 222 | 222 | 194 | 148 | 271 | 271 | 394 | 372 | 288 | 233 | 233 | 192 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | off | off | cross-off | off | off | cross-off | cross-on | cross-on | cross-on |
High Tide | 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 | 9:16PM1.36m | |||||||
Low Tide | 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 | ||||||||
— | — | 4:35 | — | — | 4:35 | — | — | 4:35 | — | — | 4:37 | — | — | 4:37 | — | — | 4:39 | — | — | |
6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | |
mm | — | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 1 | — | — |
Temp °C | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 25 | 26 | 26 | 25 | 27 | 28 | 26 | 29 | 29 | 27 | 27 | 26 | 25 |
Feels °C | 31 | 30 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 30 | 30 | 29 | 32 | 31 | 31 | 28 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | E 9 | E 9 | E 10 | E 10 | E 11 | E 11 | E 10 | E 10 | E 10 | E 10 |
99 | 118 | 120 | 173 | 122 | 120 | 140 | 185 | 222 | 222 | 194 | 148 | 271 | 271 | 394 | 372 | 288 | 233 | 233 | 192 | |
Swell 2 Height (m) Direction Period (s) | SSW 8 | SE 10 | SE 10 | SE 9 | SE 8 | SE 9 | SSE 8 | SSE 7 | S 8 | S 8 | S 8 | SSE 7 | SSE 8 | E 14 | S 8 | SSE 8 | SSE 8 | SSE 13 | SE 12 | SE 11 |
7 | 15 | 23 | 22 | 25 | 40 | 27 | 21 | 5 | 11 | 5 | 17 | 13 | 37 | 11 | 12 | 6 | 16 | 35 | 30 | |
Swell 3 Height (m) Direction Period (s) | S 12 | SSW 8 | SSW 8 | SSW 8 | SW 7 | SW 7 | SE 13 | S 8 | SE 13 | SE 13 | SSE 12 | S 7 | S 7 | SSE 8 | SE 11 | SE 11 | SSE 14 | SSE 8 | S 7 | S 7 |
3 | 6 | 6 | 6 | 2 | 2 | 7 | 5 | 6 | 6 | 14 | 4 | 4 | 13 | 20 | 19 | 19 | 6 | 4 | 4 | |
Wind waves Height (m) Direction Period (s) | S 5 | S 5 | S 4 | S 4 | S 4 | SSE 4 | — | — | — | SSE 8 | — | — | SSW 3 | SSW 3 | WSW 8 | SW 3 | SSW 3 | — | ENE 4 | E 4 |
28 | 20 | 13 | 12 | 8 | 6 | — | — | — | 48 | — | — | 3 | 2 | 6 | 2 | 4 | — | 8 | 14 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 70 | 115 | 30 |
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.










