Surf Forecasts:
Shida surf forecast from 23 Jul 2026:
- Best quality surf: Friday 24 Jul, 12PM (local time) - 1ft (0.3m), 17s period, SE swell with cross-offshore winds.
- Most powerful swell: Thursday 23 Jul, 12PM (local time) - 2.5ft (0.7m), 9s period, E swell with 83 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 12PM (local time) - 1ft (0.3m), 17s period with SE 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 24) at 12PM. The primary swell is predicted to be 0.3m and 17s period with a secondary swell of 0.5m and 9s. Another secondary swell of 0.4m and 9s is also forecast. Another secondary swell of 0.4m and 4s is also forecast. 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 0.7m 9s and forecast to arrive on Thursday (Jul 23) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 5s period and expected on Monday (Jul 27) at 12AM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Fri 24th Jul) | 1ft (0.3m) 17s |
| Best Surf | 12PM (Fri 24th Jul) | 1ft (0.3m) 17s |
| Most Powerful | 12PM (Thu 23rd Jul) | 2.5ft (0.7m) 9s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
First up, Shida looks like a real mixed bag. The next week and a half is pretty quiet - small, weak, and mostly messy. The water temp is sitting at 78°, which is pretty much normal for this time of year, so no surprises there.
The only real window of interest starts to show up from Saturday, August 1st. That’s when we finally see some energy building. Saturday afternoon sees a jump in activity with a 1.0ft swell from ESE, light offshore winds, and a combined energy of 411 - that’s a solid moderate push. The waves will be clean, and the swell period is a generous 15 seconds, so there’s proper groundswell in the water. It’s not huge, but it’s the first sign of life.
Sunday, August 2nd is where it gets interesting. By Sunday afternoon, Shida is looking at 2ft ESE swell with a 16-second period and light cross-offshore winds. The combined energy hits 1841 - that’s strong wave energy. This is clean, lined-up surf, but it’s pushing into the 5ft mark, so it’s probably too much for beginners. More experienced surfers will be stoked.
Now, Monday, August 3rd through to Thursday, August 6th - the swell really cranks up, but it’s too big. We’re looking at 10ft to 13ft ESE and E swells, with long periods and offshore winds, so the quality would be there, but the size is 8ft plus. That’s expert territory only. The combined energy is in the thousands - 5643, 6754, 6867, right up to 7412 - that’s very strong to extreme wave energy. If you’re a seasoned charger, this is a standout window, but it’s not for the faint-hearted.
Friday, August 7th might be the sweet spot. The swell drops to 5ft from the east, with glassy conditions in the morning - zero wind. The period is 11 seconds, and the combined energy is 726 - moderate but solid. That’s clean, surfable, and manageable. The afternoon shows a 7ft SSW swell with a short 7-second period, but glassy again. That short period might make it a bit wonky, but the clean conditions are a bonus.
So, if you’re picking the best on offer, I’d say Sunday, August 2nd afternoon is the standout for experienced surfers, and Friday, August 7th morning is the call for anyone wanting clean, fun-sized waves without the massive power.
Remember, Shida is a bit inconsistent, and the crowds can be an issue here, so get in early, especially for the glassy sessions.
Rusty out.
Short Range ForecastLight rain (total 5mm), mostly falling on Thu night. Warm (max 29°C on Thu afternoon, min 23°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 21mm), heaviest during Sun night. Warm (max 28°C on Sun afternoon, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
AM | 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) | E 10 | E 9 | E 9 | E 9 | SE 11 | SE 10 | SE 16 | SE 16 | SE 10 | SE 15 | SE 15 | SE 10 | SE 10 | ESE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 87 | 81 | 58 | 57 | 57 | 51 | 65 | 63 | 50 | 55 | 64 | 72 | 38 | 67 | 80 | 53 | 48 | 47 | 45 | 43 | 49 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross-off | off | on | cross | on | glassy | off | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross | off | off |
High Tide | 12:53PM1.01m | 9:55PM1.33m | 3:31PM1.10m | 10:50PM1.30m | 3:52PM1.18m | 00:02AM1.29m | 4:16PM1.25m | 1:12AM1.32m | 4:40PM1.30m | 2:10AM1.36m | 5:03PM1.34m | 2:59AM1.41m | 5:26PM1.37m | ||||||||
Low Tide | 3:04PM1.00m | 6:19AM0.44m | 4:23PM1.10m | 7:24AM0.37m | 7:04PM1.14m | 8:18AM0.29m | 8:25PM1.11m | 9:03AM0.22m | 9:14PM1.06m | 9:43AM0.16m | 9:51PM1.01m | 10:18AM0.12m | 10:26PM0.94m | ||||||||
 |  |  | | |  | | | |  | | | | |  | | | | | |  | |
 | 4:39 | — | — | 4:39 | — | — | 4:41 | — | — | 4:41 | — | — | 4:41 | — | — | 4:43 | — | — | 4:43 | — | — |
 | — | 6:49 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — |
mm | — | — | 1 | — | — | — | — | — | 4 | 1 | 2 | 11 | — | — | 2 | 2 | 3 | — | — | — | — |
Temp °C | 28 | 29 | 27 | 28 | 28 | 26 | 28 | 27 | 25 | 27 | 28 | 27 | 25 | 25 | 24 | 25 | 24 | 24 | 26 | 27 | 26 |
Feels °C | 31 | 32 | 30 | 32 | 31 | 29 | 31 | 29 | 28 | 30 | 31 | 31 | 25 | 26 | 26 | 27 | 24 | 26 | 28 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 9 | E 9 | E 9 | E 9 | ESE 4 | SE 10 | SE 10 | SE 10 | ESE 6 | SE 10 | SE 10 | SE 6 | SSW 6 | SSW 6 | S 6 | SE 10 | SE 10 | NE 8 | ENE 8 | ENE 8 |
| kJ | 87 | 81 | 58 | 57 | 39 | 11 | 48 | 49 | 50 | 42 | 64 | 64 | 15 | 29 | 39 | 28 | 48 | 47 | 29 | 43 | 49 |
Swell 2 Height (m) Direction Period (s) | SSW 6 | S 6 | SE 10 | SE 9 | SE 11 | E 9 | E 8 | E 8 | SE 5 | SE 10 | E 5 | SE 14 | SE 10 | ESE 10 | SE 10 | SE 10 | SSW 6 | NE 8 | SE 10 | SE 10 | SE 9 |
| kJ | 25 | 15 | 24 | 22 | 57 | 36 | 22 | 22 | 10 | 53 | 14 | 72 | 38 | 67 | 80 | 49 | 12 | 30 | 45 | 32 | 31 |
Swell 3 Height (m) Direction Period (s) | SE 10 | SE 10 | SE 18 | SE 18 | SE 17 | SE 10 | SE 16 | SE 16 | ENE 5 | SE 15 | SE 15 | E 7 | SSW 5 | SE 5 | SE 13 | SE 13 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | SSW 8 |
| kJ | 25 | 25 | 49 | 49 | 43 | 51 | 65 | 63 | 9 | 55 | 54 | 17 | 7 | 7 | 28 | 27 | 13 | 22 | 24 | 14 | 13 |
Wind waves Height (m) Direction Period (s) | — | ENE 3 | SE 5 | ENE 4 | E 4 | — | SE 4 | ESE 5 | — | — | SSE 4 | SSE 5 | — | SSW 6 | NE 4 | NE 5 | ENE 5 | ENE 4 | NE 4 | E 5 | — |
| kJ | — | 1 | 13 | 5 | 7 | — | 9 | 18 | — | — | 21 | 51 | — | 53 | 13 | 53 | 46 | 15 | 5 | 4 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 70 | 17 | 17 | 0 | 0 | 3 | 63 | 3 | 0 | 0 | 17 | 70 | 63 | 17 | 3 | 70 | 3 | 17 | 0 | 0 |
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.
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