Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Uchiumi surfForecast / Kyu Shu / Japan
48hr Weather and Surf, issued 2 pm Wednesday 17 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Uchiumi surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Uchiumi sea temperature is
21.0° C
(Which is slightly cooler than normal)How big are the waves at Uchiumi today?
The current surf forecast for Uchiumi at 10PM is: 0.4m 9s primary swell from a East-southeast direction and 0.2m 3s secondary swell from a South-southwest direction, 0.3m 3s secondary swell from a North direction (forecast issued at 02:00pm December 17). The wind direction is predicted to be cross-offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | - | - |
| Afternoon (17 Dec) | 1.5ft (0.4m) | 8s |
| Evening (17 Dec) | 1.5ft (0.4m) | 9s |
Table - waves today at Uchiumi. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 9 | 9 | 9 | 6 | 8 | 6 | 5 | 10 | 10 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 28 | 28 | 30 | 30 | 30 | 85 | 24 | 74 | 39 | 31 | 30 | 29 | 29 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 28 | 28 | 27 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | on | cross- on | cross- on | cross | cross- off | cross | cross- on | on | cross- on | glass | cross | glass | cross | cross- off | cross |
High Tide / height (m) | 3:40PM 1.82 | 5:33AM 1.79 | 4:19PM 1.87 | 6:16AM 1.85 | 4:59PM 1.90 | 6:57AM 1.88 | ||||||||||||||||||
Low Tide / height (m) | 10:05AM 0.99 | 10:38PM 0.07 | 10:52AM 1.01 | 11:19PM -0.05 | 11:35AM 1.02 | 11:59PM -0.12 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 | - | - | - | - | - | - | - | 7:07 |
| Sunset | - | 5:12 | - | - | - | - | - | - | - | 5:12 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - |
 | |  | | | | | | | | | | |  |  |  |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 16 | 18 | 15 | 13 | 11 | 11 | 10 | 10 | 12 | 13 | 13 | 13 | 12 | 11 | 12 | 14 | 16 | 17 | 17 | 17 | 17 | 15 | 15 | 16 |
| Feels °C (?) | 13 | 13 | 12 | 10 | 9 | 8 | 7 | 7 | 10 | 10 | 10 | 10 | 9 | 8 | 9 | 12 | 15 | 16 | 17 | 15 | 17 | 14 | 14 | 15 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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