Surf Forecasts:
Uchiumi surf forecast from 24 Aug 2026:
- Best quality surf: Thursday 27 Aug, 9AM (local time) - 5.5ft (1.7m), 8s period, SE swell with cross-offshore winds.
- Most powerful swell: Tuesday 25 Aug, 9PM (local time) - 11ft (3.5m), 14s period, SE swell with 5,607 kJ wave energy.
- Next surfable swell (1★+): Thursday 27 Aug, 9AM (local time) - 5.5ft (1.7m), 8s period with SE swell.
Best Forecast Surf Conditions for Uchiumi this week:
The surf forecast for Uchiumi over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 27) at 9AM. The primary swell is predicted to be 1.7m and 8s period with a secondary swell of 0.6m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Uchiumi in the next 16 days are 3.5m 14s and forecast to arrive on Tuesday (Aug 25) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Sunday (Aug 30) at 3PM.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 27th Aug) | 5.5ft (1.7m) 8s |
| Best Surf | 9AM (Thu 27th Aug) | 5.5ft (1.7m) 8s |
| Most Powerful | 9PM (Tue 25th Aug) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Uchiumi over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for Uchiumi.
We are looking at a rough start with no surf on offer for the opening days. The first chance of anything decent won't show until Thursday, August 27th. Before that, we’ve got a gap of a few days with some real lumpy, windy, and messy conditions that are hard to get excited about. A big swell builds mid-week but it's pinned with onshore winds, so those bigger waves won't be clean. It’s a frustrating wait.
The pick of the period hands down is Thursday, August 27th. That morning, the wind swings light and cross-offshore, turning the sea surface clean. The swell hangs around 6 ft from the SSE with a short period of 8 seconds. The combined energy is moderate (507), so there is some push behind it. Uchiumi is a reef break, and the offshore direction (WSW from the guidance) matches up nicely with the ESE swell direction, making it set up well. While the wave period is short, the clean conditions and light breeze (10 km/h) mean you'll get some fun, rippable walls. The water is a warm 84°F, about average for this time of year. Thursday afternoon holds similar promise too.
Friday the 28th keeps the clean theme going for the morning with similar 5 ft SSW swell and light winds. The quality drops off in the afternoon as the wind picks up and turns cross-shore. Saturday the 29th lingers in the marginal zone with waist-high surf and cross-shore winds—nothing special, but you could still get a few.
There’s another long gap here through the start of September. Then, way out on the forecast, we have another potential window. Sunday, September 6th shows a small bump of 3 ft from the ESE, but the wind is offshore from the WSW (15 km/h) and it looks clean. The energy is weak (206) but the conditions will be near perfect for the size. Even better, Monday, September 7th offers glassy conditions in the morning with 3 ft swell. That is genuinely promising but it is more than a week away, so keep one eye on the forecast.
Given the consistent combo of bigger swell and nasty onshore wind early on, Uchiumi might look more interesting for kite surfers during that mid-week blast. For us paddle surfers, Thursday the 27th is the day to circle.
Stay patient.
Rusty.
Short Range ForecastHeavy rain (total 70mm), heaviest during Wed afternoon. Warm (max 28°C on Mon morning, min 26°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 35mm), heaviest during Thu afternoon. Warm (max 29°C on Fri morning, min 26°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | ESE 13 | ESE 17 | SE 16 | SE 15 | SE 14 | SE 14 | SSE 13 | SSE 12 | S 11 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 9 | SSE 8 | SSE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 346 | 2283 | 4451 | 4797 | 4764 | 4662 | 3322 | 1659 | 475 | 373 | 348 | 348 | 315 | 245 | 221 | 203 | 144 | 81 | 79 | 70 | 62 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-on | on | on | cross-on | cross-on | cross-on | cross-off | cross-off | cross | cross-off | cross | cross-off | cross | cross | cross-off | cross | cross | glassy |
High Tide | 5:05PM1.93m | 3:44AM1.89m | 5:34PM2.03m | 4:36AM2.02m | 6:00PM2.11m | 5:21AM2.13m | 6:25PM2.16m | 6:01AM2.21m | 6:50PM2.18m | 6:40AM2.24m | 7:14PM2.19m | 7:18AM2.22m | 7:39PM2.18m | ||||||||
Low Tide | 9:52AM0.46m | 10:31PM1.29m | 10:39AM0.34m | 11:08PM1.13m | 11:19AM0.27m | 11:41PM0.97m | 11:55AM0.25m | 00:12AM0.81m | 12:28PM0.27m | 00:42AM0.68m | 12:59PM0.35m | 1:14AM0.58m | 1:30PM0.47m | 1:47AM0.51m | |||||||
 | |  | |  |  | | | | | | | |  | | | |  | | | | |
 | 5:43 | — | — | 5:43 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | — |
 | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:42 | — | — | 6:40 | — |
mm | — | — | — | — | 3 | 19 | 14 | 14 | 20 | 9 | 9 | 13 | 3 | — | 1 | — | — | — | — | — | — |
Temp °C | 28 | 28 | 27 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 29 | 29 | 28 | 29 | 29 | 27 | 29 | 29 | 27 |
Feels °C | 32 | 30 | 30 | 30 | 30 | 31 | 31 | 31 | 32 | 33 | 32 | 32 | 32 | 32 | 33 | 32 | 32 | 31 | 32 | 31 | 32 |
Swell 1 Height (m) Direction Period (s) | ESE 13 | ESE 17 | SE 16 | SE 15 | SE 14 | SE 14 | SSE 13 | SSE 12 | SE 9 | SE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 9 | SSE 8 | SSE 8 |
| kJ | 346 | 2283 | 4451 | 4797 | 4764 | 4662 | 3322 | 1659 | 430 | 373 | 348 | 348 | 315 | 245 | 221 | 203 | 144 | 81 | 79 | 70 | 62 |
Swell 2 Height (m) Direction Period (s) | E 10 | S 8 | SE 6 | ENE 9 | E 12 | E 15 | E 13 | ESE 9 | S 11 | S 9 | E 12 | E 12 | E 11 | E 13 | E 13 | E 12 | E 12 | E 12 | E 11 | E 11 | E 11 |
| kJ | 66 | 4 | 46 | 16 | 71 | 38 | 92 | 455 | 475 | 61 | 71 | 70 | 37 | 55 | 123 | 109 | 102 | 68 | 61 | 58 | 59 |
Swell 3 Height (m) Direction Period (s) | SE 5 | SSE 7 | E 16 | — | E 15 | E 14 | ENE 11 | E 13 | E 13 | E 12 | E 16 | E 15 | E 14 | ESE 10 | SW 12 | SE 13 | SE 13 | SE 11 | ESE 10 | SE 10 | SE 10 |
| kJ | 8 | 18 | 21 | — | 69 | 102 | 39 | 85 | 85 | 73 | 20 | 38 | 59 | 37 | 6 | 7 | 7 | 5 | 9 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | ESE 5 | ESE 5 | — | — | — | — | ESE 9 | — | — | — | — | SE 8 | — | — | — | — | — | — | — | SSE 3 | — |
| kJ | 17 | 31 | — | — | — | — | 413 | — | — | — | — | 247 | — | — | — | — | — | — | — | 3 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 46 | 314 | 46 | 46 | 314 | 79 | 205 | 205 | 53 | 0 | 0 | 43 | 0 | 314 | 0 | 43 | 314 | 0 | 43 | 46 | 0 |
Best forecast wave conditions in Kyu Shu | |||||||||||||||||||||
Best forecast wave conditions in Japan | |||||||||||||||||||||
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Information about the Uchiumi Surf forecast
The above surf forecast table for Uchiumi provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Uchiumi can be found by selecting the local surf guide option on the grey menu. Our Uchiumi 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 (Uchiumi) 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 Uchiumi 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.
Uchiumi is 19 km (12 miles) from Miyazaki-shi. If you plan a holiday in Kyu Shu, look for hotels and other accommodation in Miyazaki-shi. Miyazaki-shi has rooms for a wide range of budgets as well as car hire and transport links.
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