
Surf Forecasts:
Uchiboso surf forecast from 3 Aug 2026:
- Best quality surf: Sunday 9 Aug, 9PM (local time) - 8ft (2.5m), 17s period, SW swell with offshore winds.
- Most powerful swell: Wednesday 5 Aug, 12AM (local time) - 10ft (3.0m), 16s period, SE swell with 4,529 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 12PM (local time) - 8ft (2.5m), 16s period with SE swell.
Best Forecast Surf Conditions for Uchiboso this week:
The surf forecast for Uchiboso over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 04) at 12PM. The primary swell is predicted to be 2.5m and 16s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Uchiboso in the next 16 days are 3.0m 16s and forecast to arrive on Wednesday (Aug 05) at 12AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 13s period and expected on Monday (Aug 10) at 9PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Tue 4th Aug) | 8ft (2.5m) 16s |
| Best Surf | 9PM (Sun 9th Aug) | 8ft (2.5m) 17s |
| Most Powerful | 12AM (Wed 5th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Uchiboso over the next 16 days.
The Lowdown
G’day, Rusty here. Righto, let’s have a look at what’s comin’ down the line for the Uchiboso region. It’s a bit of a slow burn for the first few days, but once it fires, it’s gonna be a proper session for those who are keen.
The first real surf we’ve got on offer hits Tuesday morning, August 4th. The water’s sittin’ at 82°, which is a touch warmer than normal for this time of year. We’ve got a solid 8ft swell from the SE, with a 16-second period – that’s proper groundswell energy, and there’s a heap of it, with combined energy reading 3026. The wind’s a fresh offshore from the NNE, so it’s gonna be clean. The catch is, this break is sheltered and rarely breaks, so you’re not gonna get a wave every time. It’s an intermediate spot, but with that size and those long-period lines, it’ll be better for experienced surfers. The afternoon cleans up a bit more with a moderate offshore from the ENE and an 8ft SE swell.
Wednesday, August 5th, the swell jumps up to 10ft from the SSE, with a 15-second period. The energy is massive – 4009 in the morning – and the wind stays offshore, keeping it clean. This is only for the experienced crew; 10ft is big, and the period means it’ll have some serious push. The morning does have a bit of cloud, but it’s clear by the afternoon with a gentler offshore breeze. Thursday, August 6th, is the real standout. The swell holds at 10ft from the SSE, the period drops to 14 seconds, but the wind goes to a gentle offshore from the NE in the morning. It’s just about as clean as it gets. The combined energy reading of 2814 is still very strong. This is the best of the bunch – big, clean, powerful waves for the experienced surfer.
Friday, August 7th, through to Sunday, August 9th, the swell drops to 8ft, but it swings around to the SSW. The wind is cross-offshore, so the waves are still clean, but there are some rain showers and even a risk of thunderstorms on Saturday. The energy stays high, up to 5692 on Sunday afternoon, but the quality’s a bit more marginal. Monday, August 10th, keeps the 8ft SSW swell, but the wind goes back to a fresh offshore, so it’s clean again. Then, from Tuesday, August 11th, the swell drops off. Tuesday morning has 6ft, but the afternoon pops up to 8ft from the east with a 12-second period and a light offshore breeze – that’s a clean, fun session for the intermediates.
After that, it’s a long, dry spell. From Wednesday, August 12th, all the way through to Wednesday, August 19th, the surf is pretty much not worth paddling for. The swell drops to 4ft and below, the wind goes onshore or cross-onshore, and the conditions are just poor. There’s a brief, glassy moment on Saturday, August 15th, with a tiny 3ft swell from the ESE, but it’s not enough to get excited about. So, the best window is from Tuesday, August 4th, through to Tuesday, August 11th, with Thursday, August 6th, being the absolute pick of the bunch.
Stay safe out there.
Rusty.
Short Range ForecastMostly dry. Warm (max 29°C on Thu morning, min 22°C on Tue night). Winds decreasing (fresh winds from the NNE on Tue morning, light winds from the NE by Thu morning). | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Fri night. Warm (max 28°C on Fri morning, min 23°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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) | SE 16 | SE 16 | SE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | S 14 | S 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SSW 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 |
Wave Graph | |||||||||||||||||||||
3022 | 3253 | 4529 | 4003 | 4324 | 3826 | 2734 | 2985 | 3249 | 2976 | 3115 | 2629 | 2953 | 3560 | 3348 | 3178 | 3631 | 3417 | 3254 | 3134 | 2157 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off |
High Tide | 8:16PM1.52m | 9:13AM1.29m | 8:45PM1.49m | 10:53AM1.19m | 9:21PM1.45m | 1:59PM1.22m | 10:16PM1.41m | 3:30PM1.34m | 11:51PM1.39m | 4:03PM1.45m | 1:23AM1.43m | 4:29PM1.53m | 2:31AM1.50m | ||||||||
Low Tide | 2:02PM0.72m | 2:56AM0.61m | 2:32PM0.89m | 3:59AM0.60m | 3:05PM1.06m | 5:24AM0.57m | 4:10PM1.21m | 6:56AM0.49m | 7:20PM1.27m | 8:08AM0.39m | 8:51PM1.22m | 9:02AM0.28m | 9:37PM1.13m | ||||||||
4:50 | — | — | 4:52 | — | — | 4:52 | — | — | 4:52 | — | — | 4:54 | — | — | 4:54 | — | — | 4:56 | — | — | |
— | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | |
mm | — | — | — | — | — | — | — | — | — | 2 | — | 7 | 2 | — | — | 2 | — | — | — | — | — |
Temp °C | 26 | 27 | 23 | 27 | 28 | 25 | 29 | 29 | 26 | 28 | 27 | 26 | 28 | 28 | 26 | 27 | 28 | 24 | 26 | 28 | 23 |
Feels °C | 24 | 26 | 21 | 27 | 29 | 27 | 33 | 31 | 29 | 28 | 27 | 28 | 29 | 29 | 29 | 28 | 29 | 24 | 23 | 27 | 21 |
Swell 1 Height (m) Direction Period (s) | SE 16 | SE 16 | SE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | S 14 | S 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SSW 15 | SW 16 | SW 16 | SW 16 | SW 16 | SW 17 | SW 16 |
3022 | 3253 | 4529 | 4003 | 4324 | 3826 | 2734 | 2985 | 3249 | 2976 | 3115 | 2629 | 2953 | 3560 | 3348 | 3178 | 3631 | 3417 | 3254 | 3134 | 2157 | |
Swell 2 Height (m) Direction Period (s) | E 14 | E 13 | ENE 13 | ENE 13 | — | ENE 17 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | SE 9 | ESE 9 | ESE 9 | ESE 12 | SE 8 | SE 8 | E 13 | E 13 | E 12 | E 12 |
4 | 3 | 57 | 31 | — | 29 | 80 | 78 | 88 | 139 | 236 | 260 | 132 | 94 | 224 | 158 | 118 | 355 | 398 | 344 | 496 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 18 | — | — | ENE 16 | ENE 16 | ENE 16 | ENE 15 | ENE 15 | ENE 14 | E 9 | ENE 14 | ENE 14 | ESE 12 | ESE 14 | — | — | — | — |
— | — | — | 6 | — | — | 25 | 25 | 47 | 42 | 43 | 41 | 7 | 40 | 39 | 208 | 261 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | — | — | — | E 10 | — | — | — | — | — | — | ESE 9 | — | — | — | E 14 | E 7 | N 4 | ENE 12 | ENE 12 |
319 | 452 | — | — | — | 512 | — | — | — | — | — | — | 637 | — | — | — | 1682 | 274 | 17 | 2354 | 3175 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 155 | 0 | 45 | 566 | 0 | 0 | 0 | 0 | 27 | 67 | 67 | 27 | 27 | 58 | 0 | 0 | 27 | 0 | 1068 | 67 | 1068 |
Best forecast wave conditions in Chiba | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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Information about the Uchiboso Surf forecast
The above surf forecast table for Uchiboso provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Uchiboso can be found by selecting the local surf guide option on the grey menu. Our Uchiboso 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 (Uchiboso) 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 Uchiboso 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.
Uchiboso is 7 km (4 miles) from the city of Tateyama. If you plan a holiday in Chiba, look for hotels and other accommodation in Tateyama. Tateyama has rooms for a wide range of budgets as well as car hire and transport links.











