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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Sunday 07 Dec 2025 JSTForecast update in hr min s Forecast update imminent
Niyodo Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Niyodo Rivermouth sea temperature is
20.8° C
(Which is normal for this time of year)How big are the waves at Niyodo Rivermouth today?
The current surf forecast for Niyodo Rivermouth at 12AM is: 0.4m 8s primary swell from a East-southeast direction and 0.1m 10s secondary swell from a Southeast direction, 0.3m 3s secondary swell from a West-southwest direction (forecast issued at 08:00pm December 07). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (08 Dec) | 1.5ft (0.4m) | 9s |
| Afternoon (08 Dec) | 1.5ft (0.4m) | 9s |
| Evening (08 Dec) | 1.5ft (0.4m) | 9s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sun 07 | Monday 08 | Tuesday 09 | Wednesday 10 | |||||||||||||||||||||
| 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 | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 28 | 28 | 28 | 31 | 32 | 32 | 32 | 32 | 30 | 29 | 32 | 55 | 54 | 53 | 52 | 52 | 43 | 44 | 44 | 30 | 30 | 45 | 45 | 46 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | off | glass | cross- off | off | off | off | off | off | off | off | off | off | off | off | off | off | glass | glass | glass |
High Tide / height (m) | 6:48PM 1.84 | 8:47AM 1.75 | 7:34PM 1.76 | 9:36AM 1.66 | 8:24PM 1.65 | 10:26AM 1.58 | ||||||||||||||||||
Low Tide / height (m) | 1:47AM -0.03 | 2:07PM 1.00 | 2:35AM 0.11 | 2:57PM 1.01 | 3:24AM 0.29 | |||||||||||||||||||
Sun 07 | Monday 08 | Tuesday 09 | Wednesday 10 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - |
| Sunset | - | - | - | - | - | - | - | 4:57 | - | - | - | - | - | - | - | 4:57 | - | - | - | - | - | - | - | 4:57 |
 | | | | |  |  |  |  | | | | | | | | | | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 12 | 11 | 11 | 11 | 13 | 16 | 17 | 12 | 11 | 9 | 7 | 6 | 8 | 13 | 14 | 10 | 8 | 7 | 6 | 6 | 9 | 12 | 13 |
| Feels °C (?) | 11 | 10 | 9 | 9 | 9 | 11 | 14 | 14 | 7 | 7 | 4 | 2 | 1 | 3 | 9 | 10 | 5 | 4 | 3 | 2 | 2 | 6 | 9 | 10 |
- 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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