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Surf Forecasts:
Niyodo Rivermouth surfForecast / Shikoku / Japan
48hr Weather and Surf, issued 8 pm Saturday 16 May 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
21.0° 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 1AM is: 0.9m 8s primary swell from a East-southeast direction and 0.3m 10s secondary swell from a Southeast direction (forecast issued at 08:00pm May 16). The wind direction is predicted to be offshore.
| Time (JST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 3ft (0.9m) | 8s |
| Afternoon (17 May) | 3ft (0.9m) | 9s |
| Evening (17 May) | 3ft (0.9m) | 9s |
Table - waves today at Niyodo Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastSome drizzle, heaviest during Tue afternoon. Warm (max 24°C on Mon morning, min 17°C on Sat night). Wind will be generally light. | ||||||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tuesday 19 | |||||||||||||||||||||
6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 10 | ESE 10 | |
125 | 122 | 127 | 125 | 127 | 103 | 131 | 131 | 106 | 108 | 111 | 111 | 92 | 84 | 106 | 113 | 111 | 103 | 99 | 106 | 96 | 79 | 140 | 111 | |
Wind (km/h) | ||||||||||||||||||||||||
on | glassy | off | off | off | glassy | on | on | glassy | off | off | glassy | off | on | on | on | on | cross-off | off | off | off | glassy | on | cross-on | |
High Tide | 6:02PM1.88m | 5:20AM1.87m | 6:51PM1.90m | 5:58AM1.88m | 7:41PM1.85m | 6:39AM1.85m | ||||||||||||||||||
Low Tide | 11:42PM0.77m | 12:04PM-0.07m | 00:25AM0.84m | 12:48PM-0.10m | 1:09AM0.92m | 1:36PM-0.06m | ||||||||||||||||||
 |  | | | | | | | | | | | | | | | | | | | | | |  | |
 | — | — | — | 5:03 | — | — | — | — | — | — | — | 5:03 | — | — | — | — | — | — | — | 5:01 | — | — | — | — |
 | 6:58 | — | — | — | — | — | — | — | 6:59 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — | 7:00 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 21 | 20 | 19 | 17 | 17 | 22 | 23 | 23 | 22 | 19 | 19 | 18 | 19 | 23 | 24 | 24 | 22 | 20 | 19 | 18 | 18 | 23 | 24 | 22 |
22 | 22 | 20 | 17 | 16 | 22 | 22 | 23 | 24 | 20 | 19 | 18 | 19 | 23 | 24 | 24 | 23 | 21 | 20 | 18 | 18 | 23 | 24 | 21 | |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 10 | ESE 10 |
 kJ | 125 | 122 | 127 | 125 | 127 | 103 | 131 | 131 | 106 | 108 | 111 | 111 | 92 | 84 | 106 | 113 | 111 | 103 | 99 | 106 | 96 | 79 | 140 | 111 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 12 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 10 | SE 12 | SE 11 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 10 | SE 10 | SE 12 | SE 11 | SE 11 | SE 11 | SE 11 | E 8 | E 8 |
| kJ | 17 | 22 | 28 | 17 | 17 | 17 | 4 | 4 | 24 | 19 | 23 | 23 | 23 | 23 | 23 | 4 | 4 | 21 | 31 | 30 | 30 | 55 | 33 | 10 |
Swell 3 Height (m) Direction Period (s) | SE 15 | SE 15 | S 6 | SE 14 | SE 14 | SE 14 | SE 14 | SE 14 | — | — | — | — | SE 10 | SE 10 | SE 10 | SE 12 | SE 12 | — | — | — | ESE 3 | E 10 | — | — |
| kJ | 9 | 9 | 1 | 8 | 8 | 8 | 7 | 7 | — | — | — | — | 4 | 4 | 4 | 6 | 6 | — | — | — | 2 | 8 | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | ESE 2 | — | — | — | — | NNE 2 | ESE 4 | ESE 5 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | 13 | 33 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 29 | 0 | 0 | 0 | 0 | 0 | 85 | 58 | 0 | 0 | 0 | 0 | 0 | 29 | 58 | 58 | 58 | 0 | 0 | 0 | 0 | 0 | 29 | 29 |
Best forecast wave conditions in Shikoku | ||||||||||||||||||||||||
Best forecast wave conditions in Japan | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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