
Surf Forecasts:
Shida surf forecast from 5 Sep 2026:
- Best quality surf: Monday 7 Sep, 3AM (local time) - 11ft (3.5m), 8s period, ESE swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 3PM (local time) - 13ft (4.0m), 10s period, S swell with 3,394 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 3AM (local time) - 11ft (3.5m), 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 Monday (Sep 07) at 3AM. The primary swell is predicted to be 3.5m and 8s period with a secondary swell of 1.4m and 11s. Another secondary swell of 0.4m and 9s 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 4.0m 10s and forecast to arrive on Monday (Sep 07) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.2m 12s period and expected on Monday (Sep 07) at 6PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 7th Sep) | 11ft (3.5m) 8s |
| Best Surf | 3AM (Mon 7th Sep) | 11ft (3.5m) 8s |
| Most Powerful | 3PM (Mon 7th Sep) | 13ft (4.0m) 10s |
Table - best surf conditions forecast for Shida over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get straight into it. We’ve got a 16-day window for Shida, and I’m not gonna sugar-coat it – the first week is a bit of a write-off. There’s a big gap of nothing but messy, blown-out conditions until we get a few days of promise later on. The standout window is short, but it’s there if you’re patient.
Right now, the water temp is sitting at 80°, which is about average for this time of year at Shida. Nothing unusual there.
The first real chance for anything decent doesn’t roll in until Monday, September 7th, but that’s a full-on storm event. We’re looking at 13ft swell from the SSE (9-10 seconds), with a massive combined energy of 3085. The wind is offshore, but it’s a near gale at 34 mph. That’s not for paddling; that’s for kites or maybe a survival mission. The reading says it’s too big for this break, and I agree. It’s a no-go for a normal surf.
The real standout kicks off on Tuesday, September 8th. The swell drops to a still-chunky 8ft from the SSE, period 10 seconds, and the energy is still strong at 1492. The wind swings to a cross-offshore from the SW at 19 mph, which cleans things up nicely. The water's still got a bit of storm energy, but the conditions are "clean." This is the best bet for the whole run, but it’s only for experienced surfers – that size is pushing it for intermediates. You’ll need to be on your game.
Wednesday, September 9th is another big one, with 10ft from the S (9 seconds) and a cross-offshore wind. Energy is 1435. Again, this is big and clean, but the forecasts say it’s borderline too big for Shida’s setup. The winds are good, but the power is immense. Only for the brave.
After that, from Thursday the 10th through to the 14th, we’re back into a slump. The swell drops, the wind goes onshore or cross-onshore, and it’s just choppy, poor-quality surf. A few days of small, long-period windswell (14 seconds) from the ESE, but with no decent wind, it’s flat and messy. A real lull.
Then, looking into the second week, we get a glimmer. Tuesday, September 15th morning shows 5ft from the E (7 seconds), but the wind is light and cross-offshore from the ESE at 6 mph. The energy is moderate (665), and the call is for "very good surf conditions." This is the pick of the second week – clean, fun-sized waves for the intermediate crowd. It’s not a beast, but it’ll be rideable and uncrowded if you’re lucky.
Friday, September 18th morning is another one to eye. We’ve got 5ft from the NE (8 seconds), but the wind is glassy – dead calm at 3 mph. The energy is 503, and the forecast says "very good surf conditions." That glassy surface will make it silky smooth, but the NE direction might not be the absolute optimum for Shida (which likes SE). Still, it’s clean and easy.
The rest of the second week, from the 16th through the 20th, fades out again. The last few days show small, weak swell with the wind either onshore or too strong. Not worth chasing.
Bottom line: The one true standout is Tuesday, September 8th for the big, clean groundswell, but it’s expert-only. The next best is Tuesday, September 15th morning for a much more manageable, clean session. Everything else is a washout. Be patient, or get the kite gear out for that Monday storm.
Rusty.
Short Range ForecastHeavy rain (total 190mm), heaviest during Mon morning. Warm (max 27°C on Mon morning, min 21°C on Sat morning). Winds increasing (light winds from the ENE on Sat morning, near gales from the SSE by Mon morning). | Days 4-6 Weather SummaryHeavy rain (total 55mm), heaviest during Tue night. Warm (max 28°C on Tue morning, min 19°C on Thu night). Winds decreasing (fresh winds from the SSW on Tue night, calm by Wed afternoon). | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 6 | E 6 | E 6 | E 6 | E 7 | ESE 8 | SSE 9 | S 10 | SSE 11 | SSE 10 | SSE 10 | S 10 | S 9 | S 10 | S 9 | S 9 | ENE 7 | ENE 7 | ENE 7 | E 14 | E 14 |
Wave Graph | |||||||||||||||||||||
92 | 60 | 89 | 196 | 440 | 623 | 2356 | 3394 | 1835 | 1357 | 1024 | 843 | 1397 | 1160 | 440 | 230 | 282 | 340 | 125 | 153 | 153 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-on | cross-on | cross | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | on | on | on |
High Tide | 8:18PM1.36m | 3:35PM1.23m | 9:56PM1.28m | 3:22PM1.30m | 00:17AM1.28m | 3:37PM1.35m | 1:44AM1.35m | 3:56PM1.40m | 2:47AM1.42m | 4:15PM1.43m | 3:38AM1.47m | 4:34PM1.46m | |||||||||
Low Tide | 5:37AM0.34m | 5:38PM1.22m | 7:05AM0.27m | 7:55PM1.13m | 8:07AM0.21m | 8:42PM0.99m | 8:55AM0.18m | 9:19PM0.83m | 9:35AM0.19m | 9:53PM0.67m | 10:09AM0.25m | 10:27PM0.52m | |||||||||
5:11 | — | — | 5:13 | — | — | 5:13 | — | — | 5:15 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | |
— | 6:00 | — | — | 5:59 | — | — | 5:58 | — | — | 5:57 | — | — | 5:54 | — | — | 5:53 | — | — | 5:52 | — | |
mm | 8 | — | — | — | 8 | 81 | 61 | 26 | 6 | 7 | 6 | 17 | 9 | 6 | 5 | 2 | 2 | 1 | — | — | — |
Temp °C | 22 | 23 | 23 | 24 | 23 | 25 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 27 | 22 | 22 | 21 | 20 | 19 | 20 | 20 |
Feels °C | 24 | 24 | 22 | 22 | 21 | 23 | 23 | 28 | 27 | 30 | 30 | 29 | 26 | 29 | 20 | 22 | 18 | 18 | 17 | 20 | 22 |
Swell 1 Height (m) Direction Period (s) | S 10 | E 6 | ESE 9 | ENE 13 | SE 11 | S 11 | E 9 | E 9 | SSE 11 | SSE 10 | SSE 10 | E 9 | E 9 | S 10 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | E 14 |
47 | 60 | 15 | 31 | 5 | 250 | 724 | 299 | 1835 | 1357 | 1024 | 36 | 15 | 1160 | 440 | 230 | 153 | 65 | 61 | 55 | 153 | |
Swell 2 Height (m) Direction Period (s) | E 9 | SSW 9 | SSW 8 | SSW 9 | SE 14 | NE 9 | SE 11 | — | E 8 | E 9 | E 9 | E 18 | E 17 | E 16 | ESE 16 | ESE 15 | ESE 15 | ESE 14 | E 15 | E 14 | S 8 |
25 | 28 | 14 | 15 | 8 | 123 | 5 | — | 169 | 130 | 74 | 6 | 23 | 21 | 49 | 42 | 72 | 69 | 109 | 153 | 29 | |
Swell 3 Height (m) Direction Period (s) | SE 9 | ESE 9 | SSE 8 | SE 12 | WSW 10 | NE 12 | — | — | NE 11 | NE 11 | E 19 | SE 12 | NNE 9 | NE 8 | E 9 | SE 11 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 |
13 | 26 | 7 | 6 | 9 | 65 | — | — | 5 | 5 | 7 | 6 | 7 | 3 | 15 | 18 | 16 | 15 | 14 | 15 | 24 | |
Wind waves Height (m) Direction Period (s) | E 6 | — | E 6 | E 6 | E 7 | ESE 8 | SSE 9 | S 10 | — | — | — | S 10 | S 9 | — | NE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 |
92 | — | 89 | 196 | 440 | 623 | 2356 | 3394 | — | — | — | 843 | 1397 | — | 115 | 124 | 282 | 340 | 125 | 73 | 63 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 63 | 63 | 561 | 640 | 626 | 104 | 563 | 91 | 77 | 63 | 63 | 87 | 1 | 85 | 63 | 85 | 78 | 256 | 17 | 3 |
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.










