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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Tuesday 24 Feb 2026 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
16.1° C
(Which is 1.1°C colder than average for this time of year)How big are the waves at Niyodo Rivermouth today?
The current surf forecast for Niyodo Rivermouth at 4AM is: 1.2m 6s primary swell from a South direction and 0.4m 10s secondary swell from a East-southeast direction, 0.1m 10s secondary swell from a Southeast direction (forecast issued at 08:00pm February 24). The wind direction is predicted to be glassy.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (25 Feb) | 4.5ft (1.3m) | 6s |
| Afternoon (25 Feb) | 4.5ft (1.4m) | 7s |
| Evening (25 Feb) | 5ft (1.6m) | 8s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tue 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||||||
| 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) (?) | 9 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 11 | 11 | 9 | 9 | 9 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 17 | 36 | 67 | 89 | 96 | 119 | 127 | 173 | 192 | 360 | 465 | 547 | 1027 | 1151 | 1034 | 1004 | 452 | 545 | 448 | 277 | 225 | 266 | 272 | 307 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | cross- on | cross- on | cross | cross- on | cross- on | cross- off | off | off | off | off | off | glass | cross- on | glass | glass | glass | glass | glass | glass | glass | glass | glass |
High Tide / height (m) | 11:59PM 1.32 | 10:23AM 1.55 | 2:57AM 1.35 | 11:56AM 1.45 | 4:19AM 1.49 | 2:10PM 1.47 | ||||||||||||||||||
Low Tide / height (m) | 4:53PM 0.48 | 4:22AM 1.13 | 6:29PM 0.52 | 6:38AM 1.28 | 8:22PM 0.45 | 9:24AM 1.22 | ||||||||||||||||||
Tue 24 | Wednesday 25 | Thursday 26 | Friday 27 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:39 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - |
| Sunset | - | - | - | - | - | - | - | 5:57 | - | - | - | - | - | - | - | 5:58 | - | - | - | - | - | - | - | 5:59 |
 | | | |  |  |  | | |  | | |  |  |  | | | | | | |  | | | |
Rain (mm) | 1 | 3 | 3 | 2 | 8 | 9 | 14 | 9 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 16 | 16 | 16 | 15 | 15 | 15 | 15 | 15 | 13 | 12 | 13 | 13 | 14 | 16 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 15 |
| Feels °C (?) | 15 | 15 | 15 | 16 | 15 | 15 | 15 | 15 | 14 | 11 | 10 | 12 | 12 | 13 | 15 | 15 | 15 | 14 | 15 | 15 | 15 | 14 | 15 | 15 |
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