Surf Forecasts:
Uchiumi surf forecast from 2 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 12AM (local time) - 15ft (4.5m), 11s period, ESE swell with cross-offshore winds.
- Most powerful swell: Wednesday 9 Sep, 12AM (local time) - 15ft (4.5m), 11s period, ESE swell with 5,507 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 12AM (local time) - 15ft (4.5m), 11s period with ESE 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 Wednesday (Sep 09) at 12AM. The primary swell is predicted to be 4.5m and 11s period. 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 4.5m 11s and forecast to arrive on Wednesday (Sep 09) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (JST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 9th Sep) | 15ft (4.5m) 11s |
| Best Surf | 12AM (Wed 9th Sep) | 15ft (4.5m) 11s |
| Most Powerful | 12AM (Wed 9th Sep) | 15ft (4.5m) 11s |
Table - best surf conditions forecast for Uchiumi over the next 16 days.
The Lowdown
Right, listen up. Rusty here. Gotta be straight with you – the 16-day window for Uchiumi starts with a whole lot of nothing. We’re looking at a rough stretch from Wednesday the 2nd all the way through to Tuesday the 8th of September. That’s a full week of messy, wind-affected conditions. The swell is there, swinging between 5ft and a beastly 12ft, but the wind is just relentless – mostly strong cross-onshore or onshore breezes from the NE or NNE, gusting up to 25 mph. It’s going to be lumpy, choppy, and just plain ugly. The water temp is sitting at a warm 84°, which is about normal for this time of year, but you won’t be enjoying it much.
The first real glimmer of hope doesn’t show up until Wednesday the 9th of September morning. The wind finally drops, swinging light cross-shore from the NNW at only 6 mph. That’s a game-changer. The swell is a solid 13ft from the ESE with an 11-second period – that’s a proper groundswell with some serious grunt. The combined energy is spiking at 4281 (moderate to strong). However, at that size, this is strictly for experienced surfers only; 13ft is a beast. A long-period ESE swell like this will really line up well at a spot like Uchiumi, a reef break exposed to that SE direction, which is bang on the optimum. It’s going to be powerful, with long lulls between sets. Because it’s fairly consistent and the wind is light, it’ll be clean, but with crowds marked as “often”, expect a few heads out. This Wednesday morning is the clear standout of the entire forecast.
After that, the rest of the window is a bit of a write-off. The wind comes back up from the NE and NNE, and while there’s still some size, the quality drops right off. Thursday the 10th is cross-on and choppy, and by the weekend of the 12th and 13th, the swell fades right down to ankle-slappers under 3ft.
For a look ahead, Wednesday the 16th of September morning has a massive 13ft ESE groundswell with a 13-second period and combined energy of 5296 (strong), but the wind is howling from the NE at 25 mph. The setup looks more interesting for kite surfing than paddle surfing. So, if you want the best of it, circle Wednesday the 9th on your calendar. That’s the one.
Rusty.
Short Range ForecastHeavy rain (total 351mm), heaviest during Fri afternoon. Warm (max 29°C on Wed afternoon, min 24°C on Wed night). Winds increasing (light winds from the NE on Wed morning, near gales from the NE by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 40mm), heaviest during Sun night. Warm (max 27°C on Sat afternoon, min 24°C on Sat morning). Mainly strong winds. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
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 9 | SE 9 | SE 8 | ESE 10 | SE 10 | SE 10 | SSE 9 | SSE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | E 8 | E 8 | ESE 10 | ESE 10 | ESE 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 396 | 314 | 239 | 565 | 1100 | 1460 | 1050 | 1033 | 1589 | 1238 | 844 | 541 | 226 | 268 | 757 | 645 | 316 | 235 | 1885 | 2159 | 5507 |
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-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off |
High Tide | 9:23AM1.88m | 8:57PM2.02m | 10:22AM1.71m | 9:28PM1.93m | 11:55AM1.58m | 10:09PM1.81m | 2:33PM1.61m | 11:29PM1.70m | 3:55PM1.74m | 1:41AM1.69m | 4:33PM1.87m | 3:10AM1.79m | 5:01PM1.98m | ||||||||
Low Tide | 2:59PM1.00m | 3:46AM0.57m | 3:31PM1.20m | 4:45AM0.65m | 4:16PM1.39m | 6:11AM0.70m | 6:22PM1.53m | 7:54AM0.67m | 9:04PM1.46m | 9:12AM0.56m | 10:03PM1.30m | 10:06AM0.45m | 10:41PM1.12m | ||||||||
 |  |  |  | |  | | |  | | |  | | | | | | |  | |  | |
 | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — |
mm | 1 | — | 9 | 3 | 30 | 69 | 103 | 118 | 18 | 2 | — | 3 | 2 | 8 | 15 | 2 | 2 | 6 | 4 | 1 | 1 |
Temp °C | 28 | 29 | 28 | 24 | 26 | 27 | 27 | 27 | 25 | 26 | 27 | 27 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 28 | 26 |
Feels °C | 32 | 31 | 31 | 23 | 28 | 28 | 28 | 29 | 22 | 25 | 26 | 26 | 23 | 25 | 24 | 25 | 24 | 25 | 24 | 27 | 30 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 8 | ESE 10 | SE 10 | SE 10 | SE 9 | SSE 8 | SSE 8 | SSE 8 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | S 8 | ENE 9 | S 8 | E 8 | ESE 11 | — | — |
| kJ | 396 | 314 | 239 | 565 | 1100 | 1199 | 926 | 848 | 314 | 128 | 84 | 53 | 49 | 33 | 49 | 516 | 21 | 235 | 1432 | — | — |
Swell 2 Height (m) Direction Period (s) | E 12 | E 11 | E 11 | E 11 | E 10 | — | NE 6 | E 10 | E 15 | E 15 | SSW 10 | E 13 | S 8 | S 8 | SE 8 | S 8 | S 8 | S 8 | — | — | — |
| kJ | 134 | 154 | 114 | 110 | 31 | — | 18 | 31 | 4 | 4 | 10 | 4 | 12 | 21 | 15 | 33 | 34 | 19 | — | — | — |
Swell 3 Height (m) Direction Period (s) | SW 10 | E 18 | ENE 6 | SW 10 | E 13 | E 16 | E 11 | ENE 6 | E 15 | — | E 14 | SSW 8 | E 13 | SE 8 | SE 8 | — | ESE 11 | ESE 11 | — | — | — |
| kJ | 4 | 6 | 4 | 4 | 13 | 5 | 35 | 14 | 4 | — | 4 | 14 | 3 | 3 | 23 | — | 12 | 12 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | ENE 6 | — | ENE 10 | NE 5 | SE 10 | SSE 9 | SSE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | E 8 | ENE 8 | ESE 10 | ESE 10 | ESE 11 |
| kJ | — | 4 | — | 483 | 68 | 1460 | 1050 | 1033 | 1589 | 1238 | 844 | 541 | 226 | 268 | 757 | 645 | 316 | 117 | 1885 | 2159 | 5507 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 43 | 361 | 46 | 65 | 286 | 286 | 286 | 286 | 286 | 121 | 286 | 54 | 79 | 46 | 286 | 286 | 286 | 729 | 73 | 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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