
Surf Forecasts:
Shida surf forecast from 30 Jul 2026:
- Best quality surf: Monday 3 Aug, 3PM (local time) - 10ft (3.0m), 18s period, SE swell with cross-onshore winds.
- Most powerful swell: Wednesday 5 Aug, 3PM (local time) - 15ft (4.5m), 16s period, SSE swell with 9,489 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 9PM (local time) - 3.5ft (1.1m), 6s period with SSW 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 30) at 9PM. The primary swell is predicted to be 1.1m and 6s period with a secondary swell of 0.9m and 6s. Another secondary swell of 0.4m and 9s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Shida in the next 16 days are 4.5m 16s and forecast to arrive on Wednesday (Aug 05) at 3PM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 30th Jul) | 3.5ft (1.1m) 6s |
| Best Surf | 3PM (Mon 3rd Aug) | 10ft (3.0m) 18s |
| Most Powerful | 3PM (Wed 5th Aug) | 15ft (4.5m) 16s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what’s cooking at Shida over the next couple of weeks.
Right off the bat, we’ve got a slow start. Thursday the 30th has a tiny 1ft SE swell with a 10-second period, so it’s weak and ordinary. The water is sitting at a comfortable 79°, which is about average for this time of year. It’s surfable, but nothing to get excited about. Friday the 31st brings a bit more size in the morning, but the wind is cross-on and the period is short at 7 seconds, so it’s messy. The afternoon cleans up a little with a cross-off breeze, but it’s still small.
The first real standout comes on Sunday the 2nd of August. Sunday morning has a 4ft SE swell with a very long 16-second period, and the combined energy is pumping at 702 (moderate). The wind is a bit cross-on in the morning, but the afternoon is where it’s at: 4ft of SE groundswell, a 15-second period, and a clean cross-off breeze. The energy jumps to 760 (moderate). That’s the best session of the first week, and it’s good for a wide range of surfers.
Now, hold onto your boards. Monday the 3rd and Tuesday the 4th see a massive pulse of swell. We’re talking 10ft to 13ft of SE swell, periods of 16-18 seconds, and energy readings in the thousands (4655 on Monday afternoon, 6800 on Tuesday morning). This is expert-only territory. The waves are too big for this break, and the wind is cross-on, so it’s going to be a washing machine. Unless you’re a big-wave charger, sit this one out.
The swell continues to pump through Wednesday the 5th and Thursday the 6th, still huge at 13ft to 15ft, all too big. The good news is the wind is clean and cross-off on Thursday, so if you’re an expert, it’s a showcase, but it’s still a massive, heavy wave.
The next real window is Friday the 7th of August. The swell drops to a still-chunky 8ft S swell with a 14-second period and a clean cross-off breeze. The energy is 2210 (strong). This is excellent for experienced surfers. Saturday the 8th is another standout: morning glass with 4ft of S swell and an 11-second period, giving you clean, lined-up waves. The afternoon stays clean with a 4ft S swell. This is the best weekend of the whole run.
After that, the wheels fall off. From Sunday the 9th all the way through Friday the 14th, the wind is a relentless cross-on mess, blowing 12 to 22 mph. The swell hangs around 4ft to 6ft, but it’s choppy and lumpy. The energy is moderate (600-1100), but the conditions are just poor. A long, frustrating gap of about six days with no real surf.
So, to wrap it up: the absolute best on offer is Sunday afternoon the 2nd of August for that clean, long-period groundswell, and then Saturday morning the 8th of August for glassy, user-friendly conditions. The big stuff in the middle is for experts only. The rest of the time, you’re fighting the wind.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Sun morning, min 26°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 29°C on Sun afternoon, min 24°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | SE 10 | SW 6 | SSW 7 | S 7 | SE 11 | SE 11 | ESE 10 | SE 18 | SE 16 | SE 15 | SE 16 | SE 17 | SE 18 | SE 17 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 16 | SSE 16 |
Wave Graph | ||||||||||||||||||||
32 | 116 | 62 | 44 | 29 | 29 | 36 | 152 | 644 | 623 | 1456 | 3479 | 4594 | 5357 | 6522 | 7382 | 8429 | 9160 | 9489 | 8170 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | glassy | cross-on | cross-off | cross-off | glassy | cross-off | glassy | cross-on | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross-off |
High Tide | 5:48PM1.39m | 4:24AM1.46m | 6:10PM1.41m | 5:04AM1.44m | 6:31PM1.43m | 5:46AM1.40m | 6:53PM1.44m | 6:31AM1.34m | 7:15PM1.44m | 7:22AM1.25m | 7:38PM1.44m | 8:23AM1.15m | 8:04PM1.43m | |||||||
Low Tide | 11:00PM0.87m | 11:21AM0.13m | 11:34PM0.79m | 11:50AM0.19m | 00:10AM0.71m | 12:19PM0.28m | 00:48AM0.63m | 12:47PM0.41m | 1:30AM0.56m | 1:15PM0.56m | 2:18AM0.49m | 1:44PM0.72m | ||||||||
— | — | 4:45 | — | — | 4:46 | — | — | 4:47 | — | — | 4:47 | — | — | 4:48 | — | — | 4:48 | — | — | |
6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:39 | — | — | 6:38 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 29 | 28 | 29 | 28 | 27 | 29 | 29 | 27 | 30 | 29 | 26 | 26 | 25 | 24 | 26 | 26 | 25 | 27 | 28 | 26 |
Feels °C | 32 | 32 | 32 | 31 | 31 | 32 | 32 | 32 | 34 | 32 | 29 | 27 | 26 | 25 | 27 | 27 | 28 | 30 | 31 | 31 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SSW 7 | SSW 7 | S 7 | SSW 6 | SSW 6 | ESE 10 | ESE 10 | SE 16 | SE 15 | SE 16 | SE 17 | SE 18 | SE 17 | SE 16 | SE 16 | SE 16 | SSE 16 | SSE 16 | SSE 16 |
32 | 45 | 62 | 44 | 16 | 11 | 36 | 67 | 644 | 623 | 1456 | 3479 | 4594 | 5357 | 6522 | 7382 | 8429 | 9160 | 9489 | 8170 | |
Swell 2 Height (m) Direction Period (s) | E 8 | SE 9 | SE 9 | SE 9 | NE 8 | SE 11 | SSW 6 | SE 18 | E 16 | ESE 9 | E 14 | E 14 | E 14 | ENE 14 | ENE 13 | E 13 | E 13 | E 18 | E 11 | E 11 |
12 | 22 | 30 | 21 | 15 | 29 | 12 | 152 | 43 | 70 | 66 | 61 | 61 | 143 | 137 | 54 | 87 | 25 | 332 | 381 | |
Swell 3 Height (m) Direction Period (s) | SE 12 | E 8 | ENE 8 | ENE 8 | SE 11 | E 11 | ENE 7 | SE 14 | SSW 5 | E 15 | ENE 7 | — | — | — | ENE 13 | E 13 | E 13 | — | — | ENE 16 |
6 | 5 | 13 | 6 | 29 | 20 | 21 | 103 | 3 | 67 | 9 | — | — | — | 141 | 125 | 87 | — | — | 26 | |
Wind waves Height (m) Direction Period (s) | S 6 | SW 6 | — | — | ENE 3 | — | — | — | NE 7 | — | — | — | — | — | — | — | — | — | — | — |
24 | 116 | — | — | 2 | — | — | — | 12 | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 17 | 0 | 0 | 0 | 0 | 0 | 17 | 0 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 | 63 |
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.











