
Surf Forecasts:
Shida surf forecast from 17 Jul 2026:
- Best quality surf: Saturday 18 Jul, 3PM (local time) - 3.5ft (1.0m), 9s period, ESE swell with cross-offshore winds.
- Most powerful swell: Monday 20 Jul, 9PM (local time) - 3.5ft (1.1m), 11s period, E swell with 267 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 3AM (local time) - 2.5ft (0.7m), 9s period with E 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 Saturday (Jul 18) at 3AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.6m and 4s. 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 1.1m 11s and forecast to arrive on Monday (Jul 20) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Jul 20) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sat 18th Jul) | 2.5ft (0.7m) 9s |
| Best Surf | 3PM (Sat 18th Jul) | 3.5ft (1.0m) 9s |
| Most Powerful | 9PM (Mon 20th Jul) | 3.5ft (1.1m) 11s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the cards for the coming weeks.
The good news is that we’ve got waves coming, but it takes a bit of patience to get to the real standout. For the first few days, the swell is small and a bit ordinary; the real excitement kicks off in the second week, with a powerful pulse of groundswell that will have the experienced crew frothing.
Shida is the only break on the radar, and it’s an inconsistent spot that needs the right push. The water temp is about what you’d expect for this time of year, nothing unusual.
We kick off on Saturday, 18 July, with some small, weak ESE swell. The morning sees 3ft of swell at 8 seconds, with combined energy at 169 (moderate). It’s surfable, but nothing special. The afternoon picks up a little to 3ft with a 9-second period and energy of 209 (moderate), but the wind is cross-off, so it’s clean enough for a paddle on a longboard.
Sunday, 19 July, looks better. Morning offshore winds from the S at 10 km/h groom 4ft ESE swell at 9 seconds (energy 317 – moderate). That’s a clean, fun little wave. Afternoon holds up with 3ft and the same period, but the wind picks up to 20 km/h offshore, so it’s still clean but a bit more blown.
Monday, 20 July, through Wednesday, 22 July, we see a steady diet of small, clean, offshore conditions. Swell sits around 3ft to 4ft from the E, periods around 9-10 seconds, with energy mostly in the moderate 100-200 range. The standout here is Wednesday morning, 22 July, when the wind drops to 5 km/h and glassy conditions hit – that’s a rare treat, even if the swell is only 3ft. It’s perfect for a quiet, glassy session.
Then things go flat. From Thursday, 23 July, through to Sunday, 26 July, the swell drops to 1ft-2ft, with poor to average conditions. Energy levels dip as low as 74 (weak). The wind is often cross-on or cross-off, and it’s just not worth the paddle. There’s a gap of a few days with no real surf.
Now, the real standout hits. Monday, 27 July, looks promising. Morning brings a clean 3ft from the SSE at a long 14-second period, with energy at 440 (moderate). But the afternoon is where it gets interesting: 6ft of SSE swell at 12 seconds, with combined energy of 1109 (strong). That’s a solid, powerful groundswell, and with offshore winds at 20 km/h, it’s going to be clean and punchy. This is a proper step up.
Tuesday, 28 July, is the pick of the whole forecast. Morning sees 7ft SSE swell at 12 seconds (energy 1311 – strong), and the wind is cross-off, so it’s clean. The afternoon builds to 7ft at 13 seconds (energy 2237 – very strong) with a light offshore breeze, making for excellent, powerful waves. This is prime for experienced surfers – the crowd might turn up, but it’s worth it.
Wednesday, 29 July, gets big. The morning is 10ft of SSE swell at 14 seconds (energy 3354 – very strong). That’s too big for this break, and likely only for the experts. The wind is cross-off, so it’s clean, but be careful. The afternoon drops to 8ft (energy 2975 – very strong) with the same conditions, still a big, powerful groundswell.
From Thursday, 30 July, onwards, the swell stays big but the wind turns ugly. Cross-on and onshore winds from the NE and NNW spoil the party, with 7ft of S swell at 14 seconds (energy over 2000 – very strong). It’s choppy and messy. Friday, 31 July, is just as poor, with onshore winds and similar sized swell. Saturday, 1 August, and Sunday, 2 August, see the swell drop back to 6ft and then 3ft, with cross-off winds but still marginal conditions.
So, the standout is clear: Tuesday, 28 July. That combination of 7ft SSE groundswell at 13 seconds, light offshore wind, and a clean, powerful wave is the best on offer. Monday afternoon, 27 July, is also a great call for a slightly smaller but still excellent session. For the first week, Wednesday morning, 22 July, offers the best chance of a glassy, small wave if you’re patient.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Mon morning, min 25°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Wed morning. Warm (max 30°C on Tue morning, min 26°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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) | E 8 | ESE 8 | ESE 9 | E 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 |
Wave Graph | |||||||||||||||||||
88 | 127 | 173 | 173 | 232 | 165 | 127 | 122 | 139 | 267 | 247 | 252 | 196 | 156 | 121 | 111 | 81 | 80 | 58 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | glassy | off | cross-off | cross-on | cross | cross-on |
High Tide | 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 | 12:53PM1.01m | 9:55PM1.33m | |||||||
Low Tide | 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 | 5:08AM0.49m | 3:04PM1.00m | |||||||
— | 4:35 | — | — | 4:35 | — | — | 4:37 | — | — | 4:37 | — | — | 4:39 | — | — | 4:39 | — | — | |
6:52 | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:50 | — | — | 6:49 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 3 | 4 | 2 | — | — |
Temp °C | 26 | 27 | 27 | 25 | 27 | 27 | 26 | 29 | 29 | 27 | 30 | 30 | 27 | 29 | 29 | 27 | 28 | 28 | 27 |
Feels °C | 28 | 29 | 29 | 27 | 30 | 29 | 29 | 31 | 31 | 30 | 33 | 32 | 30 | 33 | 34 | 31 | 31 | 31 | 33 |
Swell 1 Height (m) Direction Period (s) | E 8 | ESE 8 | ESE 9 | E 9 | ESE 9 | E 9 | E 9 | E 9 | E 9 | E 11 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 |
88 | 127 | 173 | 173 | 232 | 165 | 127 | 122 | 139 | 267 | 247 | 252 | 196 | 156 | 121 | 111 | 81 | 80 | 58 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 9 | SE 8 | SSE 7 | S 8 | S 8 | S 8 | SE 7 | E 11 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | S 4 | SSE 8 | S 4 | S 4 | S 5 | SE 10 |
25 | 40 | 34 | 21 | 10 | 11 | 5 | 12 | 63 | 13 | 6 | 12 | 6 | 10 | 6 | 9 | 6 | 7 | 24 | |
Swell 3 Height (m) Direction Period (s) | SW 7 | SW 7 | S 9 | S 8 | SE 12 | SSE 12 | SSE 12 | S 7 | SSE 7 | S 7 | S 7 | SE 11 | ESE 11 | SSE 8 | SSE 11 | SSE 11 | SE 10 | SE 10 | S 4 |
2 | 2 | 2 | 5 | 6 | 14 | 14 | 4 | 5 | 1 | 1 | 19 | 12 | 6 | 12 | 11 | 25 | 25 | 6 | |
Wind waves Height (m) Direction Period (s) | SE 4 | SSE 4 | — | — | SSE 8 | SSE 7 | SSE 7 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 5 | S 4 | SSW 5 | — | SSW 5 | — |
15 | 7 | — | — | 69 | 57 | 40 | 4 | 22 | 14 | 11 | 19 | 14 | 19 | 10 | 23 | — | 22 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 | 608 | 0 | 0 | 0 | 0 | 17 | 17 | 1 |
Best forecast wave conditions in Chiba | |||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










