Surf Forecasts:
Uchiumi surf forecast from 5 Sep 2026:
- Most powerful swell: Monday 7 Sep, 12AM (local time) - 15ft (4.5m), 11s period, ENE swell with 4,400 kJ wave energy.
Best Forecast Surf Conditions for Uchiumi this week:
The most powerful waves expected at Uchiumi in the next 16 days are 4.5m 11s and forecast to arrive on Monday (Sep 07) at 12AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 12AM (Mon 7th Sep) | 15ft (4.5m) 11s |
Table - best surf conditions forecast for Uchiumi over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's on the cards for Uchiumi over the next couple of weeks.
To be straight with you, it’s a rough start. The forecast is showing a lot of wind and messy conditions for the first week and a half. We’ve got a big pulse of swell arriving on Sunday the 7th of September, with a solid 9.8ft east-northeast swell at 11 seconds, but the wind is cross-onshore, so it’s going to be a choppy, blown-out mess. The combined energy is a hefty 3576 (moderate to strong), but it’s just not working with the wind. The following days look similar—plenty of swell but hammered by onshore and cross-onshore winds. Monday the 14th of September offers a bit of a reprieve: a 5.2ft to 5.9ft east-northeast swell with lighter winds, but it’s still cross-onshore and only getting a marginal call. The water temp is sitting around 84°F with a +1.4°F anomaly, so it’s a touch warmer than average for this time of year.
The only real standout window comes right at the tail end of the outlook. On Wednesday the 16th of September, we’ve got a clean, glassy morning with no wind at all. The swell is small at 3.0ft from the east-southeast at 9 seconds, and the combined energy is a weak 255, but with glassy conditions, it’ll be the most fun you’ll have all period. The break is a reef, so it should handle that small swell alright. After that, the swell drops right off, with energy values falling below 100 from the 19th of September onwards, so it’s a long wait for that one clean window.
The first surf of any real note is on the 7th of September, but it’s a write-off. The entire period from the 5th of September through to the 15th of September is a frustrating run of onshore wind and poor surf conditions. If you’re a kite surfer, the strong winds and big swell on the 7th and 8th might look interesting, but for a paddle surfer, it’s a pass.
In short, the best bet is to wait for that Wednesday the 16th of September morning. It’s small, but it’ll be clean. Everything else is a battle with the wind.
Short Range ForecastHeavy rain (total 99mm), heaviest during Sat afternoon. Warm (max 28°C on Mon morning, min 24°C on Sun afternoon). Winds decreasing (near gales from the NE on Sun afternoon, light winds from the NNE by Mon morning). | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Wed night. Warm (max 27°C on Tue morning, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
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 8 | ENE 8 | E 8 | E 9 | ENE 10 | ENE 11 | ENE 11 | E 10 | ENE 8 | NE 7 | E 8 | ESE 9 | ESE 8 | ESE 8 | SE 8 | E 8 | ENE 8 | ENE 7 | ENE 7 | E 9 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 551 | 561 | 692 | 1051 | 3152 | 4400 | 2092 | 724 | 365 | 258 | 247 | 363 | 299 | 223 | 125 | 371 | 597 | 290 | 77 | 151 | 241 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 2:33PM1.61m | 11:29PM1.70m | 3:55PM1.74m | 1:41AM1.69m | 4:33PM1.87m | 3:10AM1.79m | 5:01PM1.98m | 4:09AM1.94m | 5:28PM2.07m | 4:56AM2.07m | 5:52PM2.13m | 5:37AM2.18m | 6:17PM2.17m | ||||||||
Low Tide | 6:22PM1.53m | 7:54AM0.67m | 9:04PM1.46m | 9:12AM0.56m | 10:03PM1.30m | 10:06AM0.45m | 10:41PM1.12m | 10:48AM0.37m | 11:13PM0.94m | 11:25AM0.33m | 11:44PM0.77m | 11:59AM0.34m | 00:14AM0.61m | ||||||||
 | |  |  |  |  |  |  |  | | |  | | | |  | |  | | | | |
 | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — |
 | — | 6:34 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:27 | — | — | 6:25 | — |
mm | 24 | 27 | 12 | 2 | 24 | 10 | — | — | — | — | — | 1 | 3 | 1 | 7 | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 25 | 25 | 25 | 28 | 28 | 27 | 27 | 27 | 27 | 25 | 26 | 25 | 25 | 25 | 24 | 26 | 26 | 25 |
Feels °C | 27 | 23 | 23 | 22 | 22 | 22 | 26 | 29 | 27 | 27 | 27 | 28 | 26 | 28 | 28 | 25 | 25 | 23 | 28 | 29 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | S 8 | S 8 | S 9 | E 10 | E 11 | E 10 | SSE 10 | E 8 | E 8 | SSE 9 | ESE 9 | ESE 8 | ESE 8 | SE 8 | E 16 | E 8 | E 7 | ENE 7 | E 9 | ENE 9 |
| kJ | 168 | 82 | 21 | 6 | 1945 | 2891 | 1453 | 35 | 305 | 213 | 78 | 363 | 299 | 223 | 125 | 21 | 438 | 231 | 77 | 151 | 162 |
Swell 2 Height (m) Direction Period (s) | E 15 | SE 7 | E 13 | E 13 | S 9 | S 8 | S 10 | SSW 11 | S 11 | SSE 10 | ESE 11 | E 19 | E 19 | ESE 10 | ESE 10 | S 8 | E 16 | SE 8 | SE 7 | SE 7 | SE 7 |
| kJ | 4 | 8 | 4 | 3 | 13 | 1 | 31 | 22 | 57 | 74 | 22 | 7 | 7 | 20 | 34 | 10 | 21 | 45 | 38 | 38 | 67 |
Swell 3 Height (m) Direction Period (s) | SE 9 | E 14 | — | — | — | — | — | ESE 11 | ESE 11 | ESE 10 | — | NNE 5 | NNE 6 | E 18 | E 17 | E 16 | E 16 | E 15 | E 15 | E 15 | E 14 |
| kJ | 3 | 4 | — | — | — | — | — | 12 | 41 | 41 | — | 7 | 12 | 6 | 24 | 47 | 46 | 38 | 69 | 74 | 62 |
Wind waves Height (m) Direction Period (s) | E 8 | ENE 8 | E 8 | E 9 | ENE 10 | ENE 11 | ENE 11 | E 10 | ENE 8 | NE 7 | E 8 | — | — | NNE 6 | NE 6 | E 8 | ENE 8 | ENE 7 | N 4 | — | ENE 8 |
| kJ | 551 | 561 | 692 | 1051 | 3152 | 4400 | 2092 | 724 | 365 | 258 | 247 | — | — | 40 | 60 | 371 | 597 | 290 | 10 | — | 241 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 121 | 46 | 79 | 286 | 121 | 121 | 43 | 286 | 43 | 43 | 46 | 43 | 43 | 18 | 13 | 43 | 43 | 43 | 43 | 46 | 20 |
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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